U.S. patent application number 16/518549 was filed with the patent office on 2019-11-07 for isometric exercise apparatus and storage rack therefor.
This patent application is currently assigned to Isologex Corporation. The applicant listed for this patent is Isologex Corporation. Invention is credited to Brad Thorpe.
Application Number | 20190336807 16/518549 |
Document ID | / |
Family ID | 42784993 |
Filed Date | 2019-11-07 |
View All Diagrams
United States Patent
Application |
20190336807 |
Kind Code |
A1 |
Thorpe; Brad |
November 7, 2019 |
ISOMETRIC EXERCISE APPARATUS AND STORAGE RACK THEREFOR
Abstract
The present invention relates generally to exercise equipment
and more specifically, to an isometric exercise apparatus and a
storage rack therefor. The isometric exercise apparatus includes a
frame which has a base and a sidewall joined to the base. The base
has an exercise platform for supporting a user's body. Also
provided is a restraint arm assembly connected to the frame. The
arm restraint assembly includes a swing arm pivotally connected to
the base, a restraint arm carried by the swing arm and positionable
above the exercise platform to inhibit movement of a portion of the
user's body so as to allow the user to perform isometric exercises.
An indexing assembly is provided to fix the swing arm in a
predetermined angular position selected from a set of discrete
angular positions relative to the base. At least one limb restraint
accessory is positionable at predetermined locations along the base
for inhibiting movement of the user's limb so as to allow the user
to perform isometric exercises. The apparatus can rapidly be
adapted or configured to target a plurality of joint angles to work
different muscle groups (or different muscles within the same
muscle group) for an enhanced isometric workout.
Inventors: |
Thorpe; Brad; (Toronto,
CA) |
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Applicant: |
Name |
City |
State |
Country |
Type |
Isologex Corporation |
Toronto |
|
CA |
|
|
Assignee: |
Isologex Corporation
Toronto
CA
|
Family ID: |
42784993 |
Appl. No.: |
16/518549 |
Filed: |
July 22, 2019 |
Related U.S. Patent Documents
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Application
Number |
Filing Date |
Patent Number |
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15433820 |
Feb 15, 2017 |
10391350 |
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16518549 |
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14297203 |
Jun 5, 2014 |
9592416 |
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15433820 |
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13750305 |
Jan 25, 2013 |
8758203 |
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14297203 |
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13137686 |
Sep 2, 2011 |
8376917 |
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13750305 |
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12385079 |
Mar 30, 2009 |
8029423 |
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13137686 |
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Current U.S.
Class: |
1/1 |
Current CPC
Class: |
A63B 21/4017 20151001;
A63B 21/0023 20130101; A63B 71/023 20130101; A63B 21/4035 20151001;
A63B 23/0227 20130101; A63B 23/0355 20130101; A63B 2208/0209
20130101; A63B 2225/09 20130101; A63B 21/4047 20151001; A63B
2071/025 20130101; A63B 69/0062 20200801; A63B 2210/50 20130101;
A63B 21/4011 20151001; A63B 2208/0252 20130101; A63B 21/002
20130101; A63B 2208/0238 20130101; A63B 23/0211 20130101 |
International
Class: |
A63B 21/002 20060101
A63B021/002; A63B 71/02 20060101 A63B071/02; A63B 21/00 20060101
A63B021/00; A63B 23/02 20060101 A63B023/02; A63B 23/035 20060101
A63B023/035 |
Claims
1. An apparatus for performing isometric exercises comprising: a
frame having a base and a sidewall joined to the base, the base
having an exercise area within which a user's body is positionable;
the base having a pair of opposed, first and second, spaced apart
sides; the sidewall lying adjacent the first side of the base; a
restraint arm assembly connected to the frame, the restraint
assembly including: a swing arm pivotable relative to the base; a
restraint arm carried by the swing arm and positionable above the
exercise area to inhibit movement of a portion of the user's body
so as to allow the user to perform isometric exercises; the
restraint arm extending across the exercise area between the swing
arm and the sidewall; an indexing assembly disposed adjacent the
second side of the base opposite the sidewall for fixing the swing
arm in a predetermined angular position selected from a set of
discrete angular positions relative to the base; and at least one
limb restraint accessory positionable at predetermined locations
along the base for inhibiting movement of the user's limb so as to
allow the user to perform isometric exercises.
2. The isometric exercise apparatus of claim 1 wherein the base is
hingedly connected to the sidewall.
3. The isometric exercise apparatus of claim 2 wherein: the
sidewall is moveable between a first, in-use position and a second,
out-of-use position; when in the first, in-use position, the
sidewall is oriented at least substantially perpendicular to the
base; and when in the second, out-of use position, the sidewall is
collapsed against the base.
4. The isometric exercise apparatus of claim 1 wherein the
restraint arm assembly is releasably connected to the frame.
5. The isometric exercise apparatus of claim 1 wherein the indexing
assembly includes an indexing plate mounted to the base and an
indexing pin releasably engageable with a portion of the indexing
plate and a portion of the swing arm to fix the swing arm to the
indexing plate.
6. The isometric exercise apparatus of claim 5 wherein: the
indexing plate has a plurality of indexing apertures defined
therein, each indexing aperture corresponding to one of the
predetermined angular positions; the swing arm has a first end
pivotally connected to the base, a second end attached to the
restraint arm and includes at a location intermediate the first and
second ends a bore; the bore of the swing arm being alignable with
one of the indexing apertures to allow insertion of the indexing
pin therethrough.
7. The isometric apparatus of claim 6 wherein the plurality of
indexing apertures are disposed in a semi-circular arrangement
along the indexing plate.
8. The isometric exercise apparatus of claim 5 wherein the indexing
assembly is provided with locking means to prevent disengagement of
the indexing pin from the indexing plate and the swing arm.
9. The isometric exercise apparatus of claim 1 wherein the
restraint arm has a first portion attached to the swing arm and a
second portion releasably connected to the sidewall.
10. The isometric exercise apparatus of claim 1 wherein: the
sidewall has defined therein a plurality of indexing bores; each
indexing bore corresponds to one of the predetermined angular
positions and is configured to receive the second portion of the
restraint arm.
11. The isometric exercise apparatus of claim 10 wherein the
indexing bores are disposed in a semi-circular arrangement along
the sidewall.
12. The isometric exercise apparatus of claim 1 wherein the base
includes a plurality of slots defined in the base, each slot being
disposed at one of the predetermined locations and configured to
receive a portion of the at least one limb restraint accessory
therein.
13. The isometric exercise apparatus of claim 12 wherein: the base
has a third side extending between the first and second sides, and
a fourth side opposite the third side and extending between the
first and second sides; and the plurality of slots includes at
least one slot disposed along the first side, at least one slot
disposed along the second side and at least one slot disposed along
the third side.
14. The isometric exercise apparatus of claim 12 wherein: the base
has a longitudinal axis and a transverse axis perpendicular to the
longitudinal axis; at least some of the slots of the plurality
being oriented generally perpendicular to the longitudinal axis of
the base.
15. The isometric exercise apparatus of claim 14 wherein at least
some of the slots of the plurality are oriented generally
perpendicular to the transverse axis of the base.
16. The isometric exercise apparatus of claim 14 wherein at least
some of the slots of the plurality are canted relative to the
longitudinal axis of the base.
17. The isometric exercise apparatus of claim 12 wherein the at
least one limb restraint accessory includes: a connector arm
configured for insertion into one of the plurality of slots; and a
retainer member supported by the connector arm for restraining a
portion of the user's limb.
18. A kit for an isometric exercise apparatus comprising: a frame
having a base and a sidewall joinable to the base, the base having
an exercise area within which a user's body is positionable; the
base having a pair of opposed, first and second, spaced apart
sides; the sidewall positionable adjacent the first side of the
base; a restraint arm assembly connectable to the frame, the
restraint assembly including: a swing arm mountable for pivoting
relative to the base; a restraint arm mountable to the swing arm
and positionable above the exercise area to inhibit movement of a
portion of the user's body so as to allow the user to perform
isometric exercises; the restraint arm being positionable to extend
across the exercise area between the swing arm and the sidewall; an
indexing assembly being positionable adjacent the second side of
the base opposite the sidewall for fixing the swing arm in a
predetermined angular position selected from a set of discrete
angular positions relative to the base; and at least one limb
restraint accessory positionable at predetermined locations along
the base for inhibiting movement of the user's limb so as to allow
the user to perform isometric exercises.
19. A kit for an isometric exercise apparatus and storage rack
therefor comprising: a collapsible frame having a base and a
sidewall joinable to the base, the base having an exercise area
within which a user's body is positionable; the base having a pair
of opposed, first and second, spaced apart sides; the sidewall
positionable adjacent the first side of the base; a restraint arm
assembly connectable to the frame, the restraint assembly
including: a swing arm mountable for pivoting relative to the base;
a restraint arm mountable to the swing arm and positionable above
the exercise area to inhibit movement of a portion of the user's
body so as to allow the user to perform isometric exercises; the
restraint arm being positionable to extend across the exercise area
between the swing arm and the sidewall; an indexing assembly being
positionable adjacent the second side of the base opposite the
sidewall for fixing the swing arm in a predetermined angular
position selected from a set of discrete angular positions relative
to the base; at least one limb restraint accessory positionable at
predetermined locations along the base for inhibiting movement of
the user's limb so as to allow the user to perform isometric
exercises; and a rack structure for suspending the frame when in a
collapsed state.
Description
RELATED APPLICATION
[0001] This application is a continuation of U.S. patent
application Ser. No. 15/433,820 filed on Feb. 24, 2017, which is a
continuation of U.S. patent application Ser. No. 14/297,203 filed
on Jun. 5, 2014, now issued to U.S. Pat. No. 9,592,416, which is a
continuation of U.S. patent application Ser. No. 13/750,305 filed
on Jan. 25, 2013, now issued as U.S. Pat. No. 8,758,203, which is a
continuation of U.S. patent application Ser. No. 13/137,686 filed
on Sep. 2, 2011, now issued as U.S. Pat. No. 8,376,917, which is a
continuation of U.S. patent application Ser. No. 12/385,079 filed
on Mar. 30, 2009, now issued to U.S. Pat. No. 8,029,423.
FIELD OF THE INVENTION
[0002] The present invention relates generally to exercise
equipment and more specifically, to an isometric exercise apparatus
and a storage rack therefor.
BACKGROUND OF THE INVENTION
[0003] A growing segment of the population suffers from obesity,
hypertension and diabetes and other related health conditions,
commonly referred to as lifestyle ailments or diseases. Such
lifestyle ailments can be treated or avoided altogether with
adequate exercise and a proper diet. As a result, people are
increasingly seeking to maintain or achieve a healthy body weight
and get fit through increased exercise. Such exercise may be
obtained through participation in team or individual sports, or
alternatively, by performing any of a variety of exercise regimens,
protocols or programs which may include aerobic and/or anaerobic
exercises.
[0004] Many exercise programs include strength training routines
designed to stimulate muscle growth and increase muscular strength.
Such routines have been shown to confer on the exercising
individual several health benefits including: (1) increasing
cardiovascular efficiency resulting in lower blood pressure and a
decrease in heart disease; (2) increasing bone density resulting in
a reduced risk of osteoporosis and arthritis; and (3) increasing
metabolic activity resulting in sustainable fat loss. Some strength
training routines require the exercising individual to perform
certain dynamic or isotonic movements using free weights or
specialized machines which target a specific muscle or muscle group
and work it through a range of motion. During these dynamic
movements, the length of the targeted muscle changes as the muscle
is being contracted through the range of motion. The popularity of
such routines has resulted in a great number of dynamic exercise
machines having been developed and manufactured. Such equipment can
now be seen in almost every health and fitness club across the
country.
[0005] However, under certain circumstances, resistance training
which involves dynamic movements (and the equipment employed to
perform such exercises) can pose an increased risk of physical
injury to the individual due to the inertia effect exerted by the
equipment. Moreover, this type of resistance training may not be
suitable for certain individuals, particularly those who are
recovering from an existing injury or illness and are being
rehabilitated.
[0006] Another type of strength training involves the performance
of isometric exercises (also referred to as isometrics). During
such exercises the joint angle and the length of the associated
muscle do not change during contraction. Studies have shown that
training with isometrics can increase peak muscle power up to
thirty-two percent (32%) more than with dynamic movements and can
increase muscular endurance up to one-hundred-and-twelve percent
(112%) over what can be achieved with dynamic movements. Moreover,
since isometrics tend to be inertia free, the risk of physical
injury to the individual tends to be substantially mitigated
thereby making such exercises more suitable for rehabilitative
applications.
[0007] While the benefits of isometrics have been recognized for
over fifty years, this form of training has not had the same
popularity as that of dynamic resistance training. This may be due
in part to the fact that very little equipment has been developed
specifically for the performance of isometrics. Isometrics are
usually performed by working the joint and muscle against an
immovable force or restraint. Traditionally, this restraint has
been provided by a structural item, such as a floor or a wall.
However, while these types of restraints tend to be adequate for
certain joint angles and muscles, it may be more difficult to
properly work other joint angles and muscles isometrically using
these restraints. Based on the foregoing, there is a real need for
exercise equipment specifically designed for isometrics.
[0008] In light of the foregoing, it would be advantageous to have
an isometric exercise apparatus which provides an external
restraint source for a plurality of joint motions. Preferably, such
an apparatus could be configured easily and quickly to create
different types of restraint for enhanced versatility thereby
offering the exercising individual the option to perform a variety
of isometric exercises.
SUMMARY OF THE INVENTION
[0009] In accordance with one broad embodiment of the present
invention, there is provided an isometric exercise apparatus
includes a frame which has a base and a sidewall joined to the
base. The base has an exercise platform for supporting a user's
body. Also provided is a restraint arm assembly connected to the
frame. The arm restraint assembly includes a swing arm pivotally
connected to the base, a restraint arm carried by the swing arm and
positionable above the exercise platform to inhibit movement of a
portion of the user's body so as to allow the user to perform
isometric exercises. An indexing assembly is provided to fix the
swing arm in a predetermined angular position selected from a set
of discrete angular positions relative to the base. At least one
limb restraint accessory is positionable at predetermined locations
along the base for inhibiting movement of the user's limb so as to
allow the user to perform isometric exercises.
[0010] In another feature, the frame is collapsible. The base is
hingedly connected to the sidewall. Additionally, the sidewall is
moveable between a first, in-use position and a second, out-of-use
position. When in the first, in-use position, the sidewall is
oriented at least substantially perpendicular to the base. When in
the second, out-of use position, the sidewall is collapsed against
the base. In a further feature, the apparatus further includes
locking means engageable with the base and the sidewall for
maintaining the sidewall in the first, in-use position.
[0011] In yet another feature, the sidewall has a front face
oriented towards the base and an opposing back face. The apparatus
further includes at least one pad carried on the front face of the
sidewall for cushioning a portion of the user's body. The at least
one pad includes a first pad and a second pad spaced apart from the
first pad.
[0012] In still a further feature, the base has a first side, a
second side opposite the first side, a third side extending between
the first and second sides, and a fourth side opposite the third
side and extending between the first and second sides. The first
side is provided with a first handle and the second side is
provided with a first pair of spaced apart castors. Additionally,
the third side is provided with a second handle and the fourth side
is provided with a second pair of spaced apart castors.
[0013] In an additional feature, the at least one limb restraint
attachment is a first limb restraint attachment. The apparatus
includes a second limb restraint attachment releasably mounted to
the exercise platform. In one feature, the second limb restraint
attachment is a dual foot restraint attachment. In another feature,
the second limb restraint attachment is a footpad.
[0014] In a further feature, the restraint arm assembly is
releasably connected to the frame.
[0015] In yet another feature, the indexing assembly includes an
indexing plate mounted to the base and an indexing pin releasably
engageable with a portion of the indexing plate and a portion of
the swing arm to fix the swing arm to the indexing plate. The
indexing plate has a plurality of indexing apertures defined
therein. Each indexing aperture corresponds to one of the
predetermined angular positions. The swing arm has a first end
pivotally connected to the base, a second end attached to the
restraint arm and includes at a location intermediate the first and
second ends a bore. The bore of the swing arm is alignable with one
of the indexing apertures to allow insertion of the indexing pin
therethrough. The plurality of indexing apertures is disposed in a
semi-circular arrangement along the indexing plate. In still
another feature, the indexing assembly is provided with locking
means to prevent disengagement of the indexing pin from the
indexing plate and the swing arm.
[0016] In an additional feature, the base has a length and width.
The restraint arm extends generally parallel to the width of the
base. Moreover, the restraint arm has a first portion attached to
the swing arm and a second portion releasably connected to the
sidewall. In a further feature, the sidewall has defined therein a
plurality of indexing bores. Each indexing bore corresponds to one
of the predetermined angular positions and is configured to receive
the second portion of the restraint arm. The restraint arm includes
a tubular body and a retractable locking pin assembly housed within
the tubular body. The locking pin assembly includes a locking pin
provided with a tip. The tip defines the second portion of the
restraint arm configured for insertion into one of the indexing
bores of the sidewall. The locking pin is moveable between an
engaged position and a retracted position. When in the engaged
position, the locking pin engages the sidewall and its tip is
received within one of the indexing bores and when in the retracted
position, the locking pin is disengaged from the sidewall. In an
additional feature, the locking pin is biased in the engaged
position.
[0017] In still another feature, the base includes a plurality of
slots defined into the outer margins of the base. Each slot is
disposed at one of the predetermined locations and configured to
receive a portion of the at least one limb restraint attachment
therein. Additionally, the base has a first side, a second side
opposite the first side, a third side extending between the first
and second sides, and a fourth side opposite the third side and
extending between the first and second sides. The plurality of
slots includes at least one slot disposed along the first side of
the base, at least one slot disposed along the second side of the
base and at least one slot disposed along the third side of the
base.
[0018] In yet another feature, the base has a longitudinal axis and
a transverse axis perpendicular to the longitudinal axis. At least
some of the slots of the plurality are oriented generally
perpendicular to the longitudinal axis of the base. In one
additional feature, at least some of the slots of the plurality are
oriented generally perpendicular to the transverse axis of the
base. In another additional feature, at least some of the slots of
the plurality are canted relative to the longitudinal axis of the
base.
[0019] In still another feature, the at least one limb restraint
attachment includes a connector arm and a retaining member. The
connector arm has a first end and a second end for insertion into
one of the plurality of slots. The retaining member is supported on
the first end of the connector arm for restraining a portion of the
user's limb. The retainer member has a shape selected from the
group consisting of: (a) a U-shape; and (b) a C-shape. In an
alternative feature, the retainer member may be formed with one of
a partially open cuff and a fully closed cuff.
[0020] In a further feature, the retainer member is releasably
connected to the connector arm. The retainer member is positionable
on the connector arm in a first orientation and in a second
orientation. The first orientation is substantially perpendicular
to the second orientation. In an additional feature, the at least
one limb restraint attachment further includes means for securing
the second end of the connector within one of the plurality of
slots. In yet another feature, the at least one limb restraint
attachment is an arm restraint attachment.
[0021] In accordance with another broad embodiment of the present
invention, there is provided an isometric exercise apparatus
includes a frame which has a base and a sidewall joined to the
base. The base has an exercise platform for supporting a user's
body. Also provided, is a restraint arm assembly connectable to the
frame. The restraint assembly includes a swing arm pivotally
connectable to the base. A restraint arm is mountable to the swing
arm and positionable above the exercise platform to inhibit
movement of a portion of the user's body so as to allow the user to
perform isometric exercises. An indexing assembly is provided for
fixing the swing arm in a predetermined angular position selected
from a set of discrete angular positions relative to the base. At
least one limb restraint accessory is positionable at predetermined
locations along the base for inhibiting movement of the user's limb
so as to allow the user to perform isometric exercises.
[0022] In accordance with yet another broad embodiment of the
present invention, there is provided a kit for an isometric
exercise apparatus and storage rack therefor. The kit includes a
collapsible frame having a base and a sidewall joined to the base.
The base has an exercise platform for supporting a user's body.
Also provided is a restraint arm assembly connectable to the frame.
The restraint assembly includes a swing arm pivotally connectable
to the base. A restraint arm is mountable to the swing arm and
positionable above the exercise platform to inhibit movement of a
portion of the user's body so as to allow the user to perform
isometric exercises. An indexing assembly is provided for fixing
the swing arm in a predetermined angular position selected from a
set of discrete angular positions relative to the base. At least
one limb restraint accessory is positionable at predetermined
locations along the base for inhibiting movement of the user's limb
so as to allow the user to perform isometric exercises. The kit
further includes a rack structure for suspending the frame when in
a collapsed state.
BRIEF DESCRIPTION OF THE DRAWINGS
[0023] The embodiments of the present invention shall be more
clearly understood with reference to the following detailed
description of the embodiments of the invention taken in
conjunction with the accompanying drawings, in which:
[0024] FIG. 1 is a front left perspective view of an isometric
exercise apparatus depicted in a deployable, ready-to use
configuration, with the sidewall of the apparatus frame shown in an
upstanding position relative to the base of the apparatus frame,
according to an embodiment of the present invention;
[0025] FIG. 2 is a rear right perspective view of the isometric
exercise apparatus shown in FIG. 1;
[0026] FIG. 3 is a top plan view of the isometric exercise
apparatus illustrated in FIG. 1 with a plurality of motion
restraint accessories (shown in dashed lines) attached to the outer
edges of the base panel of the apparatus frame at various
locations;
[0027] FIG. 4a is a front elevation view of the isometric exercise
apparatus shown in FIG. 1, with one of the arm restraint
accessories removed for clarity;
[0028] FIG. 4b is a magnified detail view of the restraint arm
assembly illustrated in FIG. 4a showing the swing arm and the
indexing plate; the indexing key having been omitted to better
reveal the keyhole defined in the swing arm;
[0029] FIG. 5 is an end view of the isometric exercise apparatus
shown in FIG. 1;
[0030] FIG. 6 is another end view of the isometric exercise
apparatus taken from the opposite end to that illustrated in FIG.
5, the footpad attachment shown in FIG. 5 having been replaced with
a dual foot restraint attachment;
[0031] FIG. 7 is a bottom plan view of the base panel shown in FIG.
1 taken in isolation, with the plurality of motion restraint
accessories omitted for clarity and a plurality of slots cut into
the base shown in dashed lines;
[0032] FIG. 8a is an enlarged, isolated front elevation view of one
of the slots defined in one of the outer edges of the base panel
shown in FIG. 1;
[0033] FIG. 8b is a cross-sectional view of the slot shown in FIG.
8a taken along line "8b-8b";
[0034] FIG. 8c is a top plan view of the slot illustrated in FIG.
8a showing a connector arm of the arm restraint attachment received
within the slot;
[0035] FIG. 9 is a perspective view of the isometric exercise
apparatus similar to that illustrated in FIG. 1, showing the
horizontal restraint member of the restraint arm assembly being
moved from a first position to a second position;
[0036] FIG. 10 is an enlarged partial, rear perspective view of the
indexing plate of the restraint arm assembly illustrated in FIG. 4a
showing the indexing key engaged within one of the keyholes defined
in the indexing plate and rotated such that the protruding locking
tabs at the end of the indexing key are misaligned with the slots
of the keyhole;
[0037] FIG. 11 is a side elevation view of the indexing key shown
in FIG. 10;
[0038] FIG. 12a is a partial, enlarged cross-sectional view of the
restraint arm of the restraint arm assembly illustrated in FIG. 9
with its locking pin shown engaged within one of the bores defined
in the panel of the sidewall;
[0039] FIG. 12b is a magnified detail view of the encircled portion
"12b" shown in FIG. 12a;
[0040] FIG. 12c is a partial, enlarged cross-sectional view of the
restraint arm similar to that shown in FIG. 12a, except that the
locking pin is now shown moved to its retracted, disengaged
position;
[0041] FIG. 12d is a magnified detail view of the encircled portion
"12d" shown in FIG. 12c;
[0042] FIG. 13a is an isolated perspective view of the first arm
restraint attachment shown in FIG. 1;
[0043] FIG. 13b is a cross-sectional view of the connector arm of
the first arm restraint attachment shown in FIG. 13a taken along
line "13b-13b";
[0044] FIG. 13c is an exploded perspective view of the first arm
restraint attachment shown in FIG. 13a;
[0045] FIG. 13d is a side elevation view of the locking key shown
in FIG. 13c;
[0046] FIG. 13e is a perspective view of a retaining member
according to an alternate embodiment to that shown in FIG. 13c;
[0047] FIG. 14a is an isolated perspective view of a first
alternate arm restraint attachment according to alternate
embodiment to that shown in FIG. 14a;
[0048] FIG. 14b is an exploded perspective view of the first
alternate arm restraint attachment shown in FIG. 14a;
[0049] FIG. 15 is an isolated perspective view of the foot pad
shown in FIG. 1;
[0050] FIG. 16 is an isolated perspective view of the dual foot
restraint attachment shown in FIG. 6;
[0051] FIG. 17 is a front elevation view of a user positioned
within the isometric exercise apparatus of FIG. 1, shown performing
an isometric exercise utilizing the footpad accessory as a
restraint to urge contraction of the calf muscles of the user's
legs; the arm restraint accessories having been omitted for the
sake of clarity;
[0052] FIG. 18 is a front elevation view of a user positioned
within the isometric exercise apparatus of FIG. 1, shown performing
an isometric exercise utilizing the horizontal restraint member of
the restraint arm assembly as a restraint to urge contraction of
certain of user's hip flexor muscles; the arm restraint accessories
having been omitted for the sake of clarity;
[0053] FIG. 19 is a front elevation view of a user positioned
within the isometric exercise apparatus of FIG. 1, shown performing
an isometric exercise utilizing the horizontal restraint member of
the restraint arm assembly as a restraint to urge contraction of
certain of the user's abdominal muscles; the arm restraint
accessories having been omitted for the sake of clarity;
[0054] FIG. 20 is a front elevation view of a user positioned
within the isometric exercise apparatus of FIG. 1, shown performing
an isometric exercise utilizing the horizontal restraint member of
the restraint arm assembly as a restraint to urge contraction of
certain of the user's back muscles; the arm restraint accessories
having been omitted for the sake of clarity;
[0055] FIG. 21 is a top plan view of a user positioned within the
isometric exercise apparatus of FIG. 1, shown performing an
isometric exercise utilizing the arm restraint attachment as a
restraint to urge contraction of the user's rhomboid muscles;
[0056] FIG. 22 is a perspective view of a user positioned within
the isometric exercise apparatus of FIG. 1, shown performing an
isometric exercise utilizing the sidewall as a restraint to urge
contraction of the one of the user's hip flexor muscles;
[0057] FIG. 23 is a partial perspective view of a user positioned
within the isometric exercise apparatus of FIG. 1, shown performing
an isometric exercise utilizing the dual foot restraint attachment
as a restraint to urge contraction of certain of the user's lower
leg muscles;
[0058] FIG. 24 is a partially exploded, perspective view of the
isometric exercise apparatus illustrated in FIG. 1 showing the
restraint arm assembly, the footpad, the arm restraint attachments
and the arc-shaped pads exploded from the apparatus frame;
[0059] FIG. 25 is an isolated, partially exploded, rear perspective
view of a portion of the isometric exercise apparatus illustrated
in FIG. 2 showing the side locking bars exploded from the apparatus
frame;
[0060] FIG. 26 is a perspective view of the isometric exercise
apparatus illustrated in FIG. 1 showing apparatus frame absent the
restraint arm assembly, the footpad, the arm restraint attachments,
the arc-shaped pads and the side locking bars, the side panel being
moved to its collapsed position and the isometric exercise
apparatus in its out-of-use, storage configuration;
[0061] FIG. 27a is an isolated perspective view of one of the
receiving stations defined in the second face of the sidewall shown
in FIG. 26;
[0062] FIG. 27b is an isolated perspective view of one of the
receiving stations defined in the top face of the base shown in
FIG. 26;
[0063] FIG. 28 is a perspective view of a rack member for holding
at least one isometric exercise apparatus in its out-of use storage
configuration, in accordance with an embodiment of the present
invention;
[0064] FIG. 29 is a side elevation view of the rack member shown in
FIG. 28;
[0065] FIG. 30 is a partially exploded perspective view of the rack
member shown in FIG. 28 with an isometric exercise apparatus in its
out-of use storage configuration, in the midst of being mounted
onto the rack member;
[0066] FIG. 31 is a perspective view of the rack member shown in
FIG. 28 with an isometric exercise apparatus mounted thereon for
storage;
[0067] FIG. 32 is an enlarged, partial front elevation view of the
rack member illustrated in FIG. 28, showing one of the castors of
the apparatus frame received within a slot defined in the first
side support member of the rack frame;
[0068] FIG. 33 is a front left perspective view of an alternative
embodiment to that illustrated in FIG. 1, showing an isometric
exercise apparatus depicted in a deployable, ready-to use
configuration, with the sidewall of the apparatus frame shown in an
upstanding position relative to the base of the apparatus
frame;
[0069] FIG. 34 is a top plan view of the isometric exercise
apparatus illustrated in FIG. 33;
[0070] FIG. 35 is a bottom plan view of the base panel shown in
FIG. 33 taken in isolation, with the plurality of motion restraint
accessories omitted for clarity and a plurality of slots cut into
the base shown in dashed lines;
[0071] FIG. 36 is an enlarged partial perspective view of the
isometric exercise apparatus illustrated in FIG. 33, showing the
base panel hingedly connected to the sidewall panel by a hinge
assembly;
[0072] FIG. 37 is an enlarged, isolated front elevation view of one
of the slots defined in one of the outer edges of the base panel
shown in FIG. 33;
[0073] FIG. 38 is an exploded perspective view of one of the arm
restraint attachments shown in FIG. 33;
[0074] FIG. 39 is a partial perspective view of the base panel
illustrated in FIG. 33 showing the arm restraint attachment
depicted in FIG. 38 and its locking pin shown exploded from the
base panel;
[0075] FIG. 40 is an exploded perspective view of the other arm
restraint attachment shown in FIG. 33;
[0076] FIG. 41 is an isolated perspective view of the retaining
member of the other arm restraint attachment shown in FIG. 33;
[0077] FIG. 42 is a perspective view of an alternate arm restraint
attachment to that shown in FIG. 38; and
[0078] FIG. 43 is an isolated perspective view of the retaining
member of the alternate arm restraint attachment shown in FIG.
42.
DETAILED DESCRIPTION OF THE EMBODIMENTS OF THE INVENTION
[0079] The description which follows, and the embodiments described
therein are provided by way of illustration of an example, or
examples of particular embodiments of principles and aspects of the
present invention. These examples are provided for the purposes of
explanation and not of limitation, of those principles of the
invention. In the description that follows, like parts are marked
throughout the specification and the drawings with the same
respective reference numerals.
[0080] Referring to FIGS. 1 through 6, there is shown an apparatus
for performing isometric exercises generally designated with
reference numeral 20. The isometric exercise apparatus 20 has a
frame 22 which includes a base 24 and a sidewall 26 hingedly
connected to the base 24 along a portion thereof. The base 24 is
designed for placement on a support surface such as a floor.
[0081] The base 24 includes a substantially rectangular panel 27
provided with a top face 28 (see FIG. 3) and an opposed bottom face
30 (see FIG. 7). As best shown in FIG. 7, the shape of the panel 27
is defined by a pair of opposed, relatively short first and second
sides 32 and 34, and a pair of opposed, relatively long, first and
second sides 36 and 38 extending between the short sides 28 and 30.
The first short side 32 meets the first long side 36 at a first
radiused corner 40, and joins the second long side 38 at a second
radiused corner 42. The two remaining corners of the panel
27--third and fourth radiused corners 44 and 46--are formed by the
juncture of the second short side 34 and each of the first and
second long sides 36 and 38, respectively. At a location
approximately four-fifths of the way between the first and second
long sides 36 and 38 proximate the first and third corners 40 and
44, the outer edges 48 and 50 of the first and second short sides
32 and 34 come in a short distance toward each other to define
shoulder portions 52 and 54. Beyond the shoulder portions 52 and
54, the outer edges 48 and 50 are parallel to each other as they
extend toward their respective corners 40 and 44.
[0082] The panel 27 may be constructed of a relatively rigid, ABS
plastic. It will however be appreciated that other materials
selected for their relatively light weight and their enhanced
stiffness, strength and wear resistance characteristics, may be
used to make the base 24 as well, for instance, polyvinylchloride
(PVC) or polypropylene. The panel 27 may be fabricated with a
number of weight reducing holes or apertures defined therein to
facilitate transport and handling of the isometric exercise
apparatus 20 and to enhance its portability.
[0083] In the preferred embodiment, the base 24 has a length
L.sub.1 which measures seventy-two (72) inches, and a width W.sub.1
which measures thirty-three (33) inches, wherein the length L.sub.1
is measured between the outer edges 48 and 50 at the second and
fourth corners 42 and 46 and the W.sub.1 is measured between the
outer edges 62 and 64 at the third and fourth corners 44 and 46.
The length L.sub.1 and the width W.sub.1 of the base 24 are
selected to accommodate the body shape and size of a plurality of
different users of the isometric exercise apparatus 20. Of course,
the dimensions of the base 24 could be adjusted to suit a
particular application or type of user.
[0084] As best shown in FIG. 7, inwardly of the outer edge 48 and
at a location closer to the shoulder portion 52 than to the corner
42, there is a generally rectangular aperture 56 which extends
between the top and bottom faces 28 and 30 of the base 24. The
aperture 56 is sized to allow the fingers of a person's hand to
extend therethrough. In this manner, a first handle 58 fashioned by
the outer edge 48 and the aperture 58, is incorporated into the
first short side 32. Disposed opposite the first handle 58, is a
pair of spaced apart castors 66 and 68 which are attached to the
outer edge 50 of the second short side 34. The first handle 58 may
be grasped by an individual and when used in conjunction with
castors 66 and 68 may be used to facilitate transport of the
apparatus 20 or the base 24 from one location to another.
[0085] The frame 22 is further provided with a second handle 60
incorporated into the first long side 36 midway between the first
and third corners 40 and 44. In like fashion to the first handle
58, the second handle 60 is formed by the outer edge 62 of the
first long side 36 and a generally rectangular aperture 70
extending between the top and bottom faces 28 and 30 of the base
24. A pair of castors 72 and 74 disposed opposite the second handle
60 is attached to the outer 64 of the second long side 38. Thus
arranged, the second handle 60 can be used in conjunction with the
castors 72 and 74 to roll the apparatus 20 to a desired
location.
[0086] Relatively large, first and second bores 76 and 78 are
located on either side of the second handle 60 at spaced apart
locations. The first bore 76 is disposed near the first corner 40,
while the second bore 78 is formed near the third corner 44. Each
bore 76, 78 is sized to receive a support arm 82, 84 of a rack 80
(as best shown in FIGS. 22 and 23). As will be explained in greater
detail below, the isometric exercise apparatus 20 may be hung on
the rack 80 from the support arm 82 and 84, for storage when not in
use.
[0087] As shown in FIG. 7, the bottom face 30 is provided with
several grip-enhancing bands or strips 90, 92, 94 and 96. These
bands tend to increase the friction which exists between the base
24 and the support surface (not shown) and tends to mitigate the
risk that the isometric exercise apparatus 20 will move or shift
during use. The first band 90 is relatively short and generally
rectangular. It runs between the first corner 40 and the first bore
66. The second band 92 is also generally rectangular but is
relatively longer than the first band 90, as it extends between the
first and second bores 76 and 78. Midway between the bores 76 and
78, the width of the second band 92 narrows to accommodate the
second handle 60. The third band 94 is generally similar in size
and shape to the first band 90 and extends between the second bore
78 and the third corner 44. The fourth band 96 is configured
differently than the others in that it is built up of four portions
98, 100, 102 and 104 which are configured to frame a rectangular
space 108.
[0088] In this embodiment, the bands 90, 92, 94 and 96 are fixed to
the bottom face of the base 24 with an adhesive. However, this need
not be the case in every application. In other embodiments, the
grip-enhancing bands could be attached to the base using hook and
loop fasteners or other types of fasteners.
[0089] Referring now to FIGS. 1 to 3, the top face 28 has a
rectangular station 110 formed therein. The boundaries of the
station 110 are delimited by a frame 112 having margins 114, 116,
118 and 120. Each margin 114, 116, 118 extends outwardly toward a
corresponding outer edge 48, 50, 64, respectively. Secured within
the station 110 is an exercise platform 122 which supports the
user's body while he/she is performing exercises using the
isometric exercise apparatus 20. The exercise platform 122 may
attached to the panel using adhesives or fasteners. In this
embodiment, the exercise platform 122 is a resilient pad 124
provided with a memory foam core sheathed in a durable material,
such as vinyl. However, in alternative embodiments, the exercise
platform can be a rubber mat or a mat made of any other material
exhibiting suitable resiliency and wear resistance properties.
[0090] Defined in, and extending through, the top and bottom faces
of the exercise platform 122 is an aperture 126 (visible in FIG.
5). The aperture 126 is aligned with, and provides access to, a
threaded blind bore (not shown) formed in the top face 28 of the
base 24. The blind bore is sized to receive the threaded connector
of an accessory or attachment of the isometric exercise apparatus
20, for example, of the footpad 128 shown in FIG. 1 or the dual
foot restraint accessory 132 shown in FIG. 6.
[0091] As best shown in FIGS. 1 and 2, the base 24 carries on its
top face 28 three hinge tubes oriented generally parallel to the
outer edges 62 and 64--a first hinge tube 140, a second hinge tube
142 and a third hinge tube 144 disposed between the first and
second hinge tubes 140 and 142. A gap G.sub.1 separates the first
hinge tube 140 from the third hinge tube 144. Similarly, a gap
G.sub.2 exists between the second hinge tube 142 and the third
hinge tube 144. The hinge tubes 140, 142 and 144 are disposed in
the region which lies between the margin 120 and the outer edge 62.
Each hinge tube 140, 142, 144 has a passageway (not shown) defined
therein. The passageways are disposed in alignment with each other
so as to allow a portion of the hinge pin or rod 146 to pass
through each of them. As will be explained in greater detail below,
the hinge tubes 140, 142 and 144 and the hinge rod 146 form part of
the hinge connection between the base 24 and the sidewall 26.
[0092] Referring now to FIGS. 3, 5, 6 and 8, a plurality of slots
generically identified with reference numeral 150 extends from the
outer edges 48, 50 and 64, into the panel 27 and toward the station
110. As will be explained in greater detail below, the slots 150
are adapted to receive and retain a connector arm of an accessory
of the isometric exercise apparatus 20 (as shown in FIG. 8c). In
the preferred embodiment, the slots 150 include twelve slots 150a,
150b, 150c, 150d, 150e, 150f, 150g, 150h, 150i, 150j, 150k and
150l, disposed at different locations along the sides 32, 34 and 38
and having different orientations relative to their corresponding
outer edges 48, 50 and 64. The relative position and orientation of
each slot 150 are now described in greater detail.
[0093] Slot 150a is formed in the second short side 34 between the
fourth corner 46 and the castor 66 (but closer to the castor 66)
and extends perpendicular to the outer edge 50. Slot 150b is also
formed in the short side 34, but it is disposed very close to the
fourth corner 46 and is cut on a slant. More specifically, slot
150b is oriented at an angle of approximately 30 degrees as
measured from the outer edge 50. Slots 150c, 150d and 150e are
positioned adjacent to each other on the second long side 38
proximate the fourth corner 46. Slot 150c is canted away from the
fourth corner 46 and forms an angle of 60 degrees with the outer
edge 64. Slot 150d lies between slots 150c and 150e and has a
perpendicular orientation relative to the outer edge 64. Slot 150e
is disposed furthest from the fourth corner 46. In like fashion to
slot 150c, slot 150e also extends at angle of 60 degrees as
measured from the outer edge 64. However, in the case of slot 150e,
the direction of inclination is toward the fourth corner 46. Still
moving away from the fourth corner 46 along the outer edge 64,
there is slot 150f. Slot 150f is oriented toward the fourth corner
and has an angle of inclination relative to the outer edge 64 of 30
degrees.
[0094] The arrangement of slots 150g, 150h, 150i, 150j, 150k and
150l along the first short side 32 and the second long side 38 is
the mirror image of the layout of slots 150f, 150e, 150d, 150c,
150b and 150a (respectively) along the second short side 34 and the
second long side 38, such that the arrangement of slots 150g
through 150l requires no further description.
[0095] The arrangement and orientation of slots 150a to 150l
affords a user the opportunity to perform many different exercises
using the apparatus 20. Simply by changing the placement of the
accessory (generically identified with reference numeral 152) from
one slot to another, the user can rapidly adapt the apparatus 20 to
target a plurality of joint angles to work different muscle groups
(or different muscles within the same muscle group) for an enhanced
isometric workout. As will be apparent to a person skilled in the
art, this feature tends to make the isometric exercise apparatus 20
very versatile. To illustrate this versatility, a plurality of
accessories 152a, 152c, 152d, 152f, 152i, 152j, 152k and 152l
mounted within their respective slots 150a, 150c, 150d, 150f, 150i,
150j, 150k and 150l are shown in dashed lines in FIG. 3.
[0096] While in the preceding paragraphs an arrangement of twelve
slots was described, it should be appreciated that this need not be
the case in every application. In other embodiments, a different
number of slots could be used. Moreover, the slots could be laid
out differently along the outer edges of the panel and/or could
have a different orientation (i.e. perpendicular or slanted
relative to the outer edge with varying angles).
[0097] But for differences arising from their varying orientations,
the slots 150 all have a generally similar structure, such that a
description of one representative slot--slot 150i--will suffice for
the others. Referring now to FIGS. 8a and 8b, slot 150i has a
tapered throat 154 (widest at the outer edge 48 and narrowing in
the direction of the slot) which tends to serve as a guide for
locating the connector arm 156 of the arm restraint attachment 152i
into the slot 150i. The throat 154 opens onto a relatively large
central opening 160 whose profile is generally oblong. Bounding on
either side, and opening onto, the central opening 160 are first
and second C-shaped channels 162 and 164. The channels 162 and 164
are sized to accommodate the travel of locking pins 166 and 168
along the channels (as best shown in FIG. 8c) which protrude from
the terminal end 170 of the connector arm 156. Each channel 162 and
164 has a back portion 172 and a pair of opposed, upper and lower
arm portions 174 and 176 joined to the back portion 172. The lower
arm portion 176 has, at spaced apart locations, cutaways 178 which
open onto locking recesses 180.
[0098] In the preferred embodiment, the lower arm portion 76 is
provided with three cutaways 178a, 178b and 178c; each cutaway
giving access to a corresponding locking recess 180a, 180b, 180c,
respectively. The first cutaway 178a and its corresponding locking
recess 180a is located closest to the throat 154 while the third
cutaway 178c and its corresponding locking recess 180c is located
furthest away from it. The second cutaway 178b and its
corresponding locking recess 180b is disposed intermediate the
first and third cutaways 178a and 178c and their respective locking
recesses 180a and 180c. In alternative embodiments, the number of
cutaways and locking recesses could be varied to suit the
particular application.
[0099] Each locking recess 180 is defined by a relatively short,
substantially vertical wall portion 181, a downwardly sloping wall
portion 182, a horizontal wall portion 184, a vertical wall portion
186 and an overhanging lip portion 188. The substantially wall
portion 181 extends from the cutaway 178 to connect to the
downwardly sloping wall portion 182. The wall portion 182 joins the
horizontal wall portion 184 at the first end 190 thereof. At the
opposite second end 192, the horizontal wall portion 184 meets the
lower end 194 of the vertical wall portion 186. The overhanging lip
portion 188 is connected to the upper end 196 of the vertical wall
portion 186 and runs back toward the cutaway 178 generally parallel
to horizontal wall portion 184.
[0100] When the locking pins 166 and 168 of the connector arm 154
are received within the locking recesses 180a, the accessory 152 is
at its most extended position 200 (see the accessory 152c shown in
FIG. 3). The accessory 152 is in its partially retracted position
202, when the locking pins 166 and 168 are accommodated in the
locking recesses 180b (see the accessory 152a shown in FIG. 3).
Lastly, the accessory 152 can be moved to its most retracted
position 204 by moving the locking pins 166 and 168 into the
locking recesses 180c (see the accessory 152i shown in FIG. 3).
[0101] As will be appreciated by a person skilled in the art, the
provision of a plurality of cutaways 178 and locking recesses 180
allows the user to adjust the distance by which an accessory 152
protrudes beyond the outer edge 64. This functionality permits the
user to customize the isometric exercise apparatus 20 to suit
his/her body shape or size. Moreover, by modifying this distance,
the apparatus 20 can be adapted to allow the user to isolate
different joint angles and perform different exercises or cause
different muscles to be contracted.
[0102] Referring now to FIGS. 1, 2 and 4a, the sidewall 26 will now
be described in greater detail. The sidewall 26 includes a
substantially rectangular panel 212 provided with a first face 214
(see FIG. 1) and an opposed second face 216 (see FIG. 2). The shape
of the panel 212 is defined by a pair of opposed, relatively short
first and second sides 218 and 220, and a pair of opposed,
relatively long, first and second sides 222 and 224 extending
between the short sides 218 and 220. The first short side 218 meets
the first long side 222 at a first corner 226, and joins the second
long side 224 at a second corner 228. The two remaining corners of
the panel 212--third and fourth corners 230 and 232--are formed by
the juncture of the second short side 220 and each of the first and
second long sides 222 and 224, respectively.
[0103] The panel 212 may be constructed of a material similar to
that used for panel 27 of the base 24. For reasons of enhanced
visibility or aesthetics, the panel may be made transparent or
translucent. In the preferred embodiment, the sidewall 26 has a
length L.sub.2 equal to the length L.sub.1 of the base 24 and the
width W.sub.2 (as measured between the outer edges 300 and 302 of
the long sides 222 and 224) of 26.5 inches.
[0104] As best shown in FIG. 2, protruding from the outer edge 234
of second long side 224 are a plurality of hinge knuckles 236, 238,
240 and 242. Hinge knuckles 236 and 238 are located at the first
and fourth corners 228 and 232, respectively, while the hinge
knuckles 238 and 240 are located at intermediate locations between
the first and fourth corners 228 and 232. These locations
correspond to the gaps G.sub.1 and G.sub.2 defined between the
first and third hinge tubes 140 and 144 and the second and third
hinge tubes 142 and 144. Each hinge knuckle 236, 238, 240 and 242
has a passageway (not shown) which when aligned with the
passageways defined in the hinge tubes 140, 142 and 144 allow a
portion of the hinge pin or rod 146 to pass therethrough.
[0105] Thus formed, the hinge connection between the base 24 and
the sidewall 26 allows the sidewall 26 to be moved between a
collapsed position 250 (shown in FIG. 26) and an upstanding
position 252 (shown in FIGS. 1 and 2). When the sidewall 26 is
moved to its collapsed position 250 the first face 214 of the
sidewall 26 is brought opposite the top face 28 of the base 24 and
the apparatus 20 is now in its out-of-use, storage position 251. In
the upstanding 252, the sidewall 26 lies perpendicular or at least
substantially perpendicular to the base 24 as shown in FIGS. 5 and
6 and the apparatus occupies its in-use position 253.
[0106] While it is generally preferred for purposes of storage and
minimizing the footprint occupied by the isometric exercise
apparatus 20 (i.e. enhancing the compactness of the apparatus) that
the frame 22 be collapsible, it will appreciated that this need not
be the case in every application. In an alternative embodiment, the
frame could be configured such that the sidewall is maintained in a
fixed position relative to the base. In such an embodiment, the
sidewall could extend perpendicular to the base and be permanently
joined to the base along an edge thereof.
[0107] Referring to FIGS. 2, 5, 6 and 20, the apparatus 20 is
provided with a pair of side locking bars 254 and 256 engageable
with both the base 24 and the sidewall 26, to retain the sidewall
26 in the upstanding in-use position 252. Each locking bar 254, 256
has a generally L-shaped body 258 defined by a first, relatively
short arm 260 and a second, relatively long arm 262. The first
short arm 260 includes a proximal end 264 joined to the first short
arm 260 and a distal or free end 266 (best shown in FIG. 5).
Located a very short distance inwardly of the free end 266 is a
first flange portion 268 which runs peripherally about the first
short arm 260.
[0108] In like fashion to the first short arm 260, the second long
arm 262 also has a proximal end 270 and a distal or free end 272.
The proximal end 270 is connected to the proximal end 264 of the
first short arm 260. The second long arm 262 is also provided with
a second flange portion 274 formed inwardly of the free end 272 and
extending about the periphery of the second long arm 262.
[0109] The first and second flange portions 268 and 274 are
configured to be retained within receiving stations (identified
generically as) 276 formed respectively in the sidewall 26 and the
base 24. The sidewall 26 has two receiving stations 276a and
276b--one to accommodate the first flange portion 268 of each side
locking bar 254, 256. Station 276a is defined in the outer edge 280
of the first short side 218 of panel 212 and is disposed roughly
midway between the first and second corners 226 and 228. Station
276b is similarly formed in the outer edge 282 of the second short
side 220 midway between the third and fourth corners 230 and
232.
[0110] Referring to FIG. 27a, each station 276a, 276b is defined by
a portion of the second face 216 of the panel 212 and a plate 284
secured to the panel 212. More specifically, the second face 216
has a thumbnail-shaped rebate 284 formed therein which is sized to
receive the free end 266 of the short arm 260. Similarly, the plate
284 has a thumbnail-shaped cutaway 286 opposed, and aligned with,
the rebate 284. Disposed intermediate the rebate 284 and the
cutaway 286 is relatively larger slot 288 which is designed to
accommodate the first flange portion 268. It will thus be
understood by a person skilled in the art that when the first
flange portion is received within the slot 288, the locking bar is
captively retained between the panel 212 and the plate 284 with its
motion restricted in five degrees of movement.
[0111] In the preferred embodiment the plate 284 is secured to
panel 212 by three fasteners 287. In alternative embodiments, the
plate could be attached differently. For instance, it could be
welded onto the panel.
[0112] In like fashion to the sidewall 26, the base 24 is provided
with two receiving stations 278a and 278b--one to accommodate the
second flange portion 274 of each side locking bar 254, 256.
Station 278a is defined in the outer edge 48 of the first short
side 32 of panel 27 and is disposed adjacent the corner 40. Station
278b is similarly formed in the outer edge 50 of the second short
side 34 near the corner 44.
[0113] FIG. 27b shows an enlarged perspective view of station 278a.
Station 278a generally resembles station 276a in that it too is
defined by a thumbnail-shaped rebate 290, a thumbnail-shaped
cutaway 292 opposed, and aligned with, the rebate 290 and a
relatively large slot 294 disposed intermediate the rebate 290 and
the cutaway 292. In this case, the slot 294 is designed to
accommodate the second flange portion 274. Contrary to the station
276a, the station 278a is wholly formed by panel 27.
[0114] As best shown in FIG. 2, to prevent the accidental release
of the second flange portions 274 from the stations 278a and 278b,
the apparatus 20 is further provided with a pair of locking pins
303 for securing the locking bars 254 and 256 in position. Each
locking pin 303 is designed for insertion through a first bore 305
defined in the base 24 adjacent the station 278a or 278b (as the
case may be) and a second bore 307 formed into the second flange
portion 274 of the locking bar 254 and 256.
[0115] In other embodiments, the locking bars could be placed at
different locations or configured differently. Alternatively, a
single locking bar may be used. In a further alternative, the
sidewall could be secured in the in-use position using other
locking means.
[0116] Referring now to FIG. 4a, the panel 212 has a pair of
arc-shaped pads 304 and 306 mounted to its first face 214 in
opposition to each other and proximate the corners 226 and 230. The
back portion of the pads 304 and 306 are nestled within arcuate
recesses 307 and 308 formed within the first face 214 (as shown in
FIG. 24). Preferably, the pads 304 and 306 are retained within the
recesses 307 and 308 by magnetic engagement. However, in
alternative embodiments, other means could be used to attach the
pads to the panel 212. For instance, the pads and the recesses
could be configured for a snap fit, or could be provided with
co-operating with hook and loop fastener strips. In still another
embodiment, the pads could be provided with one or more male
connectors for insertion into female sockets defined in the panel
212.
[0117] Each pad 304, 306 has a first end 312 carried a short
distance away from the outer edge 222 and a second end 314 which
projects beyond the outer edge 224. When the base 24 and the
sidewall 26 are connected to each other, the second end 314 abuts
or nearly abuts the top face 28 of the base 24. Preferably, the
pads 304 and 306 have a core made of a resilient material, for
example, memory foam or the like, and are sheathed in vinyl.
However, it should be appreciated that other materials could be
used to fabricate the pads. The location and shape of the pads 304
and 306 are selected to allow a user to comfortably urge a portion
of his/her body against the pads while performing an exercise using
the apparatus 20. In alternative embodiments, the pads could have a
different shape and could be disposed differently on the first face
214 of the panel 212.
[0118] The panel 212 is further provided with a plurality of spaced
apart blind bores generically identified with reference numeral
310, extending into the first face 214 of the panel 212.
Preferably, the plurality of blind bores 310 include eleven
bores--bores 310a, 310b, 310c, 310d, 310e, 310f, 310g, 310h, 310i,
310j and 310k--which are disposed across the panel 212 in a
semi-circular arrangement. The bores 310a, 310b, 310c, 310d, 310e,
310f, 310g, 310h, 310i, 310j and 310k are each radially displaced
from the plane of the base 24 by an angle .theta..sub.a,
.theta..sub.b, .theta..sub.c, .theta..sub.d, .theta..sub.e,
.theta..sub.f, .theta..sub.g, .theta..sub.h, .theta..sub.i,
.theta..sub.j, .theta..sub.k and .theta..sub.l, respectively.
Angles .theta..sub.g, .theta..sub.h, .theta..sub.i, .theta..sub.j,
.theta..sub.k and .theta..sub.l correspond to angles .theta..sub.a,
.theta..sub.b, .theta..sub.c, .theta..sub.d, .theta..sub.e and
.theta..sub.f, respectively. In the preferred embodiment,
.theta..sub.a measures 20 degrees; .theta..sub.b measures 40
degrees; .theta..sub.c measures 55 degrees; .theta..sub.d measures
70 degrees; .theta..sub.e measures 80 degrees; .theta..sub.f
measures 90 degrees; .theta..sub.g measures 90 degrees,
.theta..sub.h measures 80 degrees; .theta..sub.i measures 70
degrees; .theta..sub.j measures 55 degrees; .theta..sub.k measures
40 degrees; and .theta..sub.l measures 20 degrees.
[0119] As will be explained in greater detail, the purpose of bores
310 is to receive and captively retain a portion of the restraint
or support arm 320 in order to hold the restraint arm 320 above the
exercise platform 122 at different predetermined angular positions
relative to the plane of base 24. It will thus be appreciated that
the particular arrangement of the bores 310 along the panel 212
corresponds to specific, predetermined angular settings for the
restraint arm 320. By virtue of the number of bores 310 provided, a
user is afforded the opportunity to move the restraint arm 320 to a
plurality of positions thereby allowing different joint angles to
be isolated and different exercises to be performed or different
muscle groups to be worked.
[0120] While the provision of eleven bores is generally preferred,
in other embodiments, the panel 212 could be provided with more or
less bores depending on the needs of the user. Similarly, the bores
could be disposed differently than in the preferred embodiment. For
example, the radial spacing between adjacent bores could be varied
(i.e. increased or decreased).
[0121] Referring now to FIGS. 1, 4a, 4b, 9 and 10, the support or
restraint arm assembly 330 is now described in greater detail. The
restraint arm assembly 330 includes a swing arm 332 pivotable
relative to the base 24, the restraint or support arm 320 carried
by the swing arm 332 and an indexing assembly 334 for setting the
angular position of the swing arm 332 (and restraint arm 320)
relative to the plane of the base 24.
[0122] In this embodiment, the swing arm 332 is an elongate rod 336
having a first end 338 pivotally connected to the base 24 and a
second opposed end 340 attached to the restraint arm 320. The pivot
connection between the swing arm 332 and the base 24 is formed by a
pivot pin 342 having a knob 344 at one end and threading at the
other. The pivot pin 342 extends through an aperture (not shown)
defined in the first end 338 and is received in a threaded blind
bore (not shown) formed in the outer edge 64 of the second long
side 38 roughly midway between corners 42 and 46.
[0123] Defined in the rod 336 at a location closer to the first end
338 than to the second end 340, is a keyhole 346. As shown in FIG.
4b, the keyhole 346 includes a centrally disposed, circular opening
348 provided with a rectangular slot 350, 352 positioned on either
side of, and opening onto, the circular opening 348. As explained
below, the keyhole 346 co-operates with an indexing member or key
354 and other portions of the indexing assembly 334 to secure the
swing arm 332 in one of a plurality of predetermined angular
positions.
[0124] The indexing assembly 334 includes an indexing plate 360
attached to the base 24 and an indexing pin or key 362 engageable
with at least a portion of the indexing plate 360. The indexing
plate 360 is substantially semi-circular, its shape being defined
by an arcuate edge 364 with two opposed ends and a straight edge
366 extending between the two ends of the arcuate edge 364.
Extending from the straight edge 366 in the plane of the indexing
plate 348, are two spaced apart mounting tabs 368 and 370; each
provided with a laterally extending finger-like projection 372. The
mounting tabs 368 and 370 are designed to be snugly received within
corresponding recesses 371 and 373 formed within the outer edge 64
of the second long side 38 (shown in FIG. 24), for a snap fit. The
finger-like projections 372 serve to locate the mounting tabs 368
and 370 within the recesses. The gap that exists between the
mounting tabs 368 and 370 provides clearance for the pivot
connection between the first end 338 and the base 24. When attached
to the base 24 with mounting tabs 368 and 370, the indexing plate
360 stands upright or proud of the base 24, its straight edge 366
abutting the top face 28 of the base 24.
[0125] The indexing plate 360 is further provided with a plurality
of keyholes generically identified with reference numeral 374. The
number of keyholes 374 corresponds to the number of blind bores 310
defined in the panel 212. In the embodiment shown in FIG. 4a, the
plurality of keyholes 374 includes eleven keyholes--keyholes 374a,
374b, 374c, 374d, 374e, 374f, 374g, 374h, 374i, 374j and
374k--which are disposed across the indexing plate 360 in a
semi-circular arrangement corresponding to that of blind bores
310a, 310b, 310c, 310d, 310e, 310f, 310g, 310h, 310i, 310j and
310k. Accordingly, much like blind bores 310a to 310k, the keyholes
374a to 374k are each radially displaced from the plane of the base
24 by angle .theta..sub.a, .theta..sub.b, .theta..sub.c,
.theta..sub.d, .theta..sub.e, .theta..sub.f, .theta..sub.g,
.theta..sub.h, .theta..sub.i, .theta..sub.j and .theta..sub.k,
respectively.
[0126] Each keyhole 374 extends between the first face 376 (which
is oriented away from the panel 212) and the second face 378 (which
is positioned opposite the first face 214 of the panel 212) and is
configured similarly to the keyhole 346 defined in the rod 336. In
particular, each keyhole 374 also includes a centrally disposed,
circular opening 380 provided with a rectangular slot 382, 384
positioned on either side of, and opening onto, the circular
opening 380 (see FIG. 10). Furthermore, in like fashion to keyhole
346, each keyhole 374 is adapted to receive therethrough a portion
of the indexing key 354.
[0127] Associated with each keyhole 374 is a stop member 386 for
preventing rotation of the indexing key 354 when the indexing key
354 is inserted into the keyhole 374 and pivoted to its locking
position 388. In this embodiment and as shown in FIG. 10, the stop
member 386 takes the form of a relatively small, rectangular
projection 390 extending from the second face 378 and disposed
adjacent the circular opening 380. In other embodiments, a stop for
the indexing key could take an alternate form. For instance,
instead of a projection, the stop could be defined by one or more
grooves or notches machined into the second face 378 of the
indexing plate 360. The notch would be adapted to receive and
retain a portion of the indexing key to prevent rotation
thereof.
[0128] Referring now to FIG. 1, the indexing key 354 has a body 392
provided with a bulbous grip or handle portion 394 at one end, a
transverse key portion 396 fixed at the opposite end and a
cylindrical portion 398 extending between the handle portion 394
and the key portion 396. When viewed from the side, the cylindrical
portion 398 and the key portion 396 have a generally T-shaped
profile. The key portion 396 has a pair of opposed locking tabs 400
and 402; each locking tab 400, 402 extending away from the juncture
of the key portion 396 with the cylindrical portion 398. The
cross-sectional area of the key portion 396 is sized slightly
smaller than the keyhole 310 defined in the rod 336 and the
keyholes 374 defined in the indexing plate 360 so as to allow
insertion of the indexing key 354 through the rod and the indexing
plate 360.
[0129] When the indexing key 354 is inserted into the keyhole 374
and pivoted to its locking position 388, the locking tabs 400 and
402 are misaligned with the rectangular slots 382 and 384 thereby
preventing the indexing key 354 from being removed from the keyhole
374. Moreover, in the locking position 388, one of the tabs 400 or
402 abuts the stop member 386.
[0130] Referring now to FIGS. 12a to 12d, the restraint arm 320 has
a generally cylindrical body 410 having a first end 412 welded to
the second end 340 of the swing arm 332 and a second end 414
disposed opposite the first face 214 of the panel 212. At a
position intermediate the first and second ends 412 and 414, a
stubby handle 413 protrudes from the body 410. Tubular foam pads
415 and 417 extend along the cylindrical body 410 on either side of
the handle 413 and provide cushioning to the user during
exercise.
[0131] Machined through the body 410 is a longitudinal bore 416
which partially accommodates a retractable locking pin assembly
418. The locking pin assembly 418 includes a relatively thin,
elongate rod or locking pin 420 captively retained within the bore
416, but capable of limited movement along the longitudinal axis of
the bore 416, and a helical spring member 422 wrapped loosely about
the pin 420. The pin 420 extends through a relatively short bore
424 formed at the second end 340 of the swing arm 332 and passes
through the bore 416. The first end 426 of the pin 420 extends
beyond the edge of the swing arm 332 and terminates with a
relatively small, first stop member 428. This stop member serves a
dual function. It limits the longitudinal displacement of the pin
420 in the direction of the panel 212 and also doubles as a pull
for retracting the pin 420. Similarly, the second end 428 of the
pin 420 protrudes beyond the end 414 of the restraint arm 320 and
terminates with a second stop member 430. The second stop member
430 is sized generally larger than the first stop member 428, but
is configured to fit into the blind bores 310 defined in face 214
of the panel 212. The second stop member 430 is operable to limit
the longitudinal displacement of the pin 420 in the direction
moving away from the side panel 212.
[0132] The locking pin 420 is moveable between an engaged position
432 (shown in FIGS. 12a and 12b) and a retracted or disengaged
position 434 (shown in FIG. 12c and 12d). When the locking pin 420
is in the engaged position 432, the locking pin 420 is engaged with
the panel 212, its second stop member 430 being received within the
one of the blind bores 310. The locking pin 420 is biased in the
engaged position 432 by virtue of the helical spring member 422.
When the locking pin 420 is in the retracted or disengaged position
434, the locking pin 420 is no longer in engagement with the panel
212 as its second stop member 430 is pulled out from the bore
310.
[0133] The typical mode of operation of the restraint arm assembly
330 and the locking pin assembly 418 is now described in greater
detail. FIG. 9 shows the initial angular position of the swing arm
332 and restraint arm 320 in dashed lines and the final angular
position of these components in full lines. As a first step, the
swing arm 332 is decoupled from the indexing plate 360 so that it
is free to rotate about the pivot pin 342. This is achieved by
removing the indexing key 354 from the keyhole 348 defined in the
rod 336 and the keyhole 374b formed in indexing plate 360. The user
grasps the handle portion 394 of the indexing key 354 and rotates
the body 392 until the locking tabs 400 and 402 are aligned with
the slots 350 and 352 of the keyhole 348 and the slots 382 and 384
of the keyhole 374b. Thereafter, the indexing key 354 is pulled out
of the swing arm 332 and the indexing plate 360.
[0134] Next, the user releases the restraint arm 320 from
engagement with the panel 212 by pulling on the first stop member
428 to overcome the biasing effect of the spring member 422. This
urges the locking pin 420 to move from its engaged position 432 to
its disengaged position 434. With the locking pin 420 in the
disengaged position 434, the swing arm 332 and the restraint arm
320 are now free to pivot relative to the base 24. While holding
onto the first stop member 428 the user grasps the stubby handle
413 and uses it to direct the restraint arm 320 to the blind bore
310f which corresponds to the desired final angular position. The
user then releases the first stop member 428 to cause the locking
pin 420 to return to its engaged position 432. With the restraint
arm 320 locked in place, the swing arm 332 is now secured against
rotation by inserting the key portion 396 of the indexing key 354
through the aligned keyholes 348 and 374f. The indexing key 354 is
then rotated until one of the locking tabs 400 and 402 abuts the
rectangular projection 390.
[0135] The isometric exercise apparatus 20 can be used with a
plurality of attachments or accessories for enhanced versatility
and comfort. Examples of such attachments are the first arm
restraint attachment 152 shown in FIGS. 13a to 13d and the second
arm restraint attachment 540 shown in FIGS. 14a and 14b, the
footpad 128 and the dual foot restraint accessory 132. Of course,
the apparatus 20 could be employed with other attachments as
well.
[0136] Referring now to FIGS. 13a, 13b and 13c, there is shown the
first arm restraint attachment 152. The attachment 152 includes the
connector arm 154 for attaching the arm restraint attachment 152 to
the base 24, a generally U-shaped sleeve or retaining member 442
releasably connected to the connector arm 154 and a locking key 444
for securing the retaining member 442 to the connector arm 154. In
the preferred embodiment, the connector arm 154 is formed by a bar
446 having an upstanding socket member 448 integrally formed
therewith. The bar 446 has first end 450 adapted for insertion into
a slot 150 and a second end 452 which carries the socket member
448. Projecting outward from the lateral edges of the first end 450
are the locking pins 166 and 168 which are designed to seat within
locking recesses 180 (as shown in FIG. 8c). The first end view
profile of the bar 446 is shaped to generally correspond to the
shape of the slot 150. But to allow insertion of the first end 450
in to the slot 150, the cross-sectional area of the first end 450
is slightly smaller than the slot 150.
[0137] The socket member 448 has an upper end 454 which is carried
above the bar 446 and a lower end 456 which depends downwardly from
the bar 446. Formed in the upper end 454 is a blind bore 458. The
bore 458 defines a female socket 460 for receiving the male
connector pin 462 of the retaining member 442. Two indexing
apertures 464 and 466 extend inwardly from the outer face 472 of
the socket member 448 and open onto the female socket 460. Each
indexing apertures 464, 466 has a shape generally similar to the
keyhole 374 in that each includes a centrally disposed, circular
opening 467 provided with a rectangular slot 468, 470 positioned on
either side of, and opening onto, the circular opening 467. The
indexing apertures 464 and 466 are sized to receive a portion of
the locking key 444 inserted therethrough.
[0138] Referring specifically to FIG. 13c the U-shape retaining
member 442 includes a back portion 474 and two spaced apart arm
portions 476 and 478 which are joined to, and project upwardly from
the back portion 474. In this embodiment, the space S.sub.1
extending between the arms portions 476 and 478 is sized to
accommodate a portion of a user's arm. However, it will be
appreciated that in other embodiments, this space could be enlarged
to accommodate a portion of user's leg. In such embodiments, the
arm restraint attachment would in effect be transformed into a leg
restraint attachment.
[0139] The inner horizontal face 480 of the back portion 474, the
inner vertical face 482 of the arm portion 476, the inner vertical
face (not shown) of the arm portion 478 which bound the space
S.sub.1, are provided with cushioning to enhance the user's comfort
during exercise. The cushioning could take the form of a memory
foam sheathed in a durable cover, such as vinyl.
[0140] A generally rectangular rebate 481 is cut into the back
portion 474 at the juncture between the outer horizontal face 482
and the outer vertical face 483. When the first arm restraint
attachment 152 is mounted to the base 24 in proximity to one of the
casters 66, 72 or 74 (see for instance, arm restraint attachment
152i shown in FIG. 3), the rebate 481 serves to provide a clearance
for accommodating the castor so as to prevent the castor from
interfering with the positioning of the retaining member 442.
[0141] Projecting downwardly from the outer horizontal face 482 of
the back portion 474 is the male connector pin 462. The connector
pin 462 is generally cylindrical and has a proximal end 486 joined
to the back portion 474 and a distal or free end 488 which can be
inserted into the female socket 460. In the preferred embodiment,
three indexing openings 490, 492 and 494 are cut into the connector
pin 462 at spaced apart locations disposed between the proximal end
486 and the free end 488. The first indexing opening 490 is located
closest to the proximal end 486. The second indexing opening 492 is
disposed further down the connector pin 462, while the third
indexing opening 494 is located furthest from the proximal end 486
close to the free end 488. When the male connector pin 462 is
inserted within the female socket 460, one of the indexing openings
490, 492 and 494 is alignable with one of the indexing apertures
464 and 466 defined in the socket member 460. By inserting the
locking key 444 through the aligned indexing opening and aperture
the retaining member 442 can be secured to the connector arm
154.
[0142] As best shown in FIG. 13c, the indexing openings 490, 492
and 494 are not all aligned with each other along a common vertical
axis--some are radially staggered from each other. More
specifically, the first and third indexing openings 490 and 494 are
vertically aligned with each other, but are radial staggered from
the second opening 492 by an angle of 90 degrees.
[0143] This arrangement of indexing grooves 490, 492 and 494 serves
a dual purpose. First, it permits a slight adjustment of the height
at which the retaining member 442 is carried above the bar 446 and
second, it allows the retaining member 442 to adopt a different
orientation. By aligning the first indexing opening 490 with the
first indexing aperture 464 when inserting the male connector pin
462 into the female socket member, the retaining member 442 is
carried at its shortest height above the bar 446. However, it will
be appreciated that the height of the retaining member 442 relative
to the bar 446 can be increased by aligning the third indexing
opening 494 with the first indexing aperture 464. The ability to
adjust the height of the retaining member 442 tends to be very
desirable because it further adds to the versatility of the
apparatus 20. It may allow additional joint angles to be isolated
and exercises to be performed at different angles for the
recruitment of different muscles. Additionally, it may permit the
apparatus 20 to be better adapted for the specific body of a
user.
[0144] In FIG. 13a the retaining member 442 of the arm restraint
attachment 152 is shown oriented with the space S.sub.1 defined
between opposing arms 476 and 478 being generally parallel to the
longitudinal axis of the bar 446. The retaining member 500 of the
accessory shown mounted in slot 150c (see FIG. 1) has a different
orientation. More specifically, the space S extends generally
perpendicular to the longitudinal axis of the bar 446. This
perpendicular orientation is achieved by aligning the second
indexing opening 492 with the first or second indexing apertures
464 and 466. Again, by altering the orientation of the retaining
member 442 multiple variations of exercises become possible,
thereby further enhancing the versatility of the isometric exercise
apparatus 20.
[0145] Referring to FIG. 13d, the locking key 444 is configured
generally similar to the indexing key 354 in that it a handle
portion 504 at one end, a transverse key portion 506 fixed at the
opposite end and a cylindrical portion 508 extending between the
handle portion 504 and the key portion 506. When viewed from the
side, the cylindrical portion 508 and the key portion 506 have a
generally T-shaped profile. The key portion 506 has a pair of
opposed locking tabs 510 and 512; each locking tab 510, 512
extending away from the juncture of the key portion 506 with the
cylindrical portion 508. The cross-sectional area of the key
portion 506 is sized slightly smaller than the indexing apertures
464 and 466 defined in the socket member 460 and the indexing
openings 490, 492 and 494 formed in the connector pin 462 so as to
allow insertion of the locking key 444 through the socket member
468 and the connector pin 462. When the locking key 444 is inserted
through the indexing aperture and the indexing opening and is
pivoted, its the locking tabs 510 and 512 are misaligned with the
rectangular slots 468 and 470 thereby preventing the locking key
444 from being removed from the indexing aperture and indexing
opening.
[0146] Referring to FIG. 13e, there is shown an alternate retaining
member 520 which may be used with the connector arm 154 and the
locking key 444. The retaining member 520 has a structure that
generally resembles that of retaining member 442 in that the
retaining member 520 is also provided with a back portion 522, two
spaced apart arm portions 524 and 526 which are joined to, and
project upwardly from the back portion 474 and a space S.sub.2
which extends between the arms portions 524 and 526. However, in
this embodiment the space S.sub.2 is bound by the horizontal inner
face 528 of arm portion 524, the vertical inner face 530 of the
back portion 522 and the horizontal inner face (not visible) of the
arm portion 526. Also, in contrast to the retaining member 442
which is generally U-shaped, the shape of the retaining member 520
is more like that of a "C". Instead of having a male connector pin
extending downwardly from the horizontal outer face of the back
portion like in the retaining member 442, the male connector pin
532 of retaining member 520 extends downwardly from the horizontal
outer face 534 the arm portion 524. The male connector pin 532 is
configured for insertion into the socket 460 of the connector arm
154 and is adapted to interact with the locking key 444 in much the
same manner as the male connector pin 462 shown in FIG. 14b, such
that no additional description is required.
[0147] The provision of C-shaped retaining member 520 is
advantageous and enhances the versatility of the apparatus 20 in
that it allows the user to perform isometric exercises that include
a vertical force vector. The C-shaped retaining member 520 and more
specifically the arm portion 526 thereof, acts as a restraint
against a portion of the user's arm during the performance of such
isometric exercises.
[0148] Referring now to FIGS. 14a and 14b, there is shown a second
arm restraint attachment 540 according to another embodiment of the
present invention. The attachment 540 is generally similar to the
attachment 152 in that it too includes a connector arm 541 for
attaching the arm restraint attachment 540 to the base 24, a
generally U-shaped sleeve or retaining member 542 releasably
connected to the connector arm 541 and a locking key 544 for
securing the retaining member 542 to the connector arm 541.
[0149] In like fashion to the connector arm 154, the connector arm
541 is formed by a bar 546 having an upstanding socket member 548
integrally formed therewith. The bar 546 has first end 550 adapted
for insertion into a slot 150 and a second end 552 which carries
the socket member 548. Projecting outward from the lateral edges of
the first end 550 are the locking pins 551 and 553 (seen on FIG.
14a) which are generally similar to locking pins 166 and 168 and
which are designed to seat within locking recesses 180. The first
end view profile of the bar 546 is shaped to generally correspond
to the shape of the slot 150. But to allow insertion of the first
end 550 in to the slot 150, the cross-sectional area of the first
end 550 is slightly smaller than the slot 150.
[0150] The socket member 548 is generally similar to the socket
member 448 in that it too has an upper end 554 which is carried
above the bar 546 and a lower end 556 which depends downwardly from
the bar 546. Formed in the upper end 554 is a blind bore 558. The
bore 558 defines a female socket 560 for receiving the male
connector pin 562 of the retaining member 542. However, in contrast
to the socket member 448 which has only two indexing apertures 466
and 468, the socket member 548 has four indexing apertures 564,
566, 568 and 570 which extend inwardly from the outer face 572 of
the socket member 548 and open onto the female socket 560.
Moreover, instead of having a keyhole shape, the indexing apertures
464, 466, 468 and 470 are generally rectangular and are sized to
receive a portion of the locking key 444 inserted therethrough.
[0151] Referring specifically to FIG. 14b, the U-shape retaining
member 542 generally resembles the retaining member 442. The
retaining member 542 includes a back portion 574, two spaced apart
arm portions 576 and 578 which are joined to, and project upwardly
from the back portion 474, and a space S.sub.3 extending between
the arms portions 476 and 478. The space S.sub.3 is bound by the
inner face 580 of the back portion 574, the inner face 582 of the
arm portion 576, the inner face (not shown) of the arm portion
578.
[0152] Projecting downwardly from the outer face 582 of the back
portion 574 is the male connector pin 562. The pin 562 is generally
cylindrical and has a proximal end 586 joined to the back portion
574 and a distal or free end 588 which can be inserted into the
female socket 560. However, instead of having indexing apertures
open at both ends similar to indexing apertures 490, 492 and 444,
the connector pin 562 in this embodiment, has four indexing grooves
or notches 590, 592, 594 and 596 disposed at spaced apart locations
between the proximal end 586 and the free end 588. The first
indexing groove 590 is located closest to the proximal end 586. The
second indexing groove 592 is disposed further down the connector
pin 562, while the third indexing groove 594 is located still
further from the proximal end 586. Lastly, the fourth indexing
groove is located furthest from the proximal end 586 close to the
free end 588. When the male connector pin 562 is inserted within
the female socket 560, one or more of the indexing grooves 590,
592, 594 and 596 is alignable with one or more of the indexing
apertures 564, 566, 568 and 570 defined in the socket member 560.
By inserting the locking key 544 through the aligned indexing
groove and aperture the retaining member 542 can be secured to the
connector arm 541.
[0153] As best shown in FIG. 14c, the indexing grooves 590, 592,
594 and 596 are not all aligned with each other along a common
vertical axis--some are radially staggered from each other. More
specifically, the first and third indexing grooves 590 and 594 are
vertically aligned with each other, but are radial staggered from
the second and fourth grooves 592 and 596 (which are also
vertically aligned with each other) by an angle of 90 degrees.
[0154] This arrangement of indexing grooves 590, 592, 594 and 596
serves a dual purpose. First, it permits adjustment of the height
at which the retaining member 542 is carried above the bar 546 and
second, it allows the retaining member 542 to adopt a different
orientation. By aligning the first indexing groove 590 with the
first indexing aperture 564 when inserting the male connector pin
562 into the female socket member, the retaining member 542 is
carried at its shortest height above the bar 546. However, it will
be appreciated that the height of the retaining member 542 relative
to the bar 546 can be increased by aligning the third indexing
groove 594 with the first indexing aperture 564.
[0155] In FIG. 14a the retaining member 542 of the second arm
restraint attachment 520 is shown oriented with the space S.sub.3
defined between opposing arms 576 and 578 being generally parallel
to the longitudinal axis of the bar 546. However, the retaining
member 542 may be oriented differently to allow the space S.sub.3
to extend generally perpendicular to the longitudinal axis of the
bar 546. This perpendicular orientation would be achieved by
aligning the second indexing groove 592 with the first or second
indexing apertures 564 and 566, or by aligning the fourth indexing
groove 596 with any of one of the indexing apertures 564, 566, 568
and 570. Again, by altering the orientation of the retaining member
542 multiple variations of exercises become possible, thereby
further enhancing the versatility of the isometric exercise
apparatus 20.
[0156] Referring back to FIG. 14a, the locking pin 544 is shown to
have a generally rectangular portion 597 which serves as a knob to
facilitate grasping of the locking pin and an engagement portion
599. The engagement portion 599 is adapted to fit into the indexing
apertures 464, 466, 468 and 470 and the indexing groove 590, 592,
594 and 596.
[0157] FIG. 15 shows the footpad 128. The footpad 128 has a
generally elongate body 650 provided with a rigid plate 652. The
rigid plate 652 is topped by a foam pad 654 sheathed in a
protective cover. While in this embodiment, the foam pad 654 has a
semi-circular profile, this need not be the case in every
application. In alternative embodiments, the foam pad or for that
matter, the entire footpad could be configured differently.
[0158] Extending from the bottom face 656 of the rigid plate 652 is
a threaded connector 658 which is used to secure the footpad 128 to
the base 24. More specifically, when mounting the footpad 128 to
the base 24, the threaded connector 658 is inserted through the
aperture 126 defined in the exercise platform 122 and into the
threaded blind bore formed in the top face 28 of the base 24 (see
FIG. 24) where it is fastened. Preferably, when attached to the
base 24, the elongate body 650 of the footpad 128 is oriented
generally parallel to the short sides 28 and 32 of the base 24 (as
best shown in FIG. 4).
[0159] With reference to FIGS. 6 and 16, the dual foot restraint
accessory 132 is now described in greater detail. The dual foot
restraint accessory 132 has a dual arch structure 660 defined by a
three spaced apart vertical members 662, 664 and 666. The second
vertical member 664 is disposed between the first and third
vertical members 662 and 666. Joining the first vertical member 662
to the second vertical member 664 at their respective top ends is a
first arch member 668. Similarly, a second arch member 670 spans
the space between the second and third vertical members 664 and 666
to connect their respective top ends to each other. A threaded
connector 672 extending from the bottom end 674 of the second
vertical member 662, is used to secure the accessory 132 to the
base 24. In like fashion to threaded connector 658 of footpad 128,
the threaded connector 672 is configured for insertion through the
aperture 126 defined in the exercise platform 122 and into the
threaded blind bore formed in the top face 28 of the base 24.
[0160] As best shown in FIG. 6, when mounted onto the base 24, the
dual arch structure 660 is oriented generally parallel to the short
sides 28 and 32 of the base 24. The dual arch structure 660 in
cooperation with the exercise platform 122 define a pair of
apertures 676 and 678 through which a user can insert their
feet.
[0161] The dual arch structure 660 can be fabricated of hard
plastic or metal, but preferably it is coated with a resilient
material such as rubber to enhance the comfort of the user. It
should be appreciated that in other embodiments, the dual foot
restraint accessory could be configured differently. For instance,
in an alternative embodiment, the dual foot restraint accessory
could replace the dual arch structure with a pair of foot straps
connected to each other.
[0162] Exemplary uses of the isometric exercise apparatus 20 are
now described with reference to FIGS. 17 to 24. FIG. 17 shows a
user identified generally with reference numeral 680, using the
footpad 128 to perform an exercise to work the user's calf
(gastrocnemius) muscle. As a preliminary matter, the user 680
ensures that the swing arm 332 is moved to its fully vertical
position. Alternatively, to provide increased clearance to the user
680, the restraint arm assembly 330 could be detached from the
frame 22 as described below. The user 680 then lies down on the
base 24 with his back supported on the exercise platform 122. His
head 684 is positioned proximate the outer edge 48 of first short
side 32, while the remainder of his body extends toward the opposed
second short side 34. The user's hip (not visible) and knees 686
are flexed to approximately 45 degrees. The user's feet 688 are
disposed between the outer edge 48 and the footpad 128 with his
heels 690 resting against the pad 654 of the footpad 128. Once in
position, the user attempts to pull his heels 690 towards his
buttocks (not visible) with the pad 654 acting as a restraint for
his heels 690, thereby causing the calf muscles in his legs 692 to
isometrically contract. The user may hold this position for a
number of seconds, and repeat as desired. This exercise may be
performed one leg at a time and may be performed with the foot (or
feet) internally or externally rotated.
[0163] FIG. 18 shows the user 680 using the horizontal restraint
member 320 of the restraint arm assembly 330 to perform an
isometric exercise to work certain of the user's hip flexor
muscles. As a preliminary matter, the user 680 adjusts the
restraint arm assembly 330 so that the restraint arm 320 is carried
above the exercise platform 122 at a first angular position defined
by the angle .theta..sub.a (see FIG. 4a). The user 680 then lies
down on the base 24 with his back supported on the exercise
platform 122. His head 684 is positioned proximate the outer edge
48 of first short side 32, while the remainder of his body extends
toward the opposed second short side 34. The user's legs 692 extend
between the restraint arm 320 and the exercise platform 122. The
user 680 raises his legs 692 by flexing his hips (not visible)
while keeping his knees (not visible) straight, and brings a
portion of each leg 692 above the ankle 694 to bear against the
foam pads 415 and 417 of the restraint arm 320. Once in position,
the user 680 attempts to further raise his legs 692 against the
restraint action of the restraint arm 320, thereby causing the
rectus femoris or hip flexor muscles in his legs 692 to
isometrically contract. The user may hold this position for a
number of seconds, and repeat as desired. This exercise may be
performed one leg at a time and may be performed with the leg or
legs internally rotated.
[0164] FIG. 19 shows the user using the horizontal restraint member
320 of the restraint arm assembly 330 to perform an isometric
exercise to work the certain of the user's abdominal muscles and
more specifically, the transverse abdominis muscles. As a
preliminary matter, the user 680 adjusts the restraint arm assembly
330 so that the restraint arm 320 is carried above the exercise
platform 122 at an angular position defined by the angle
.theta..sub.k (see FIG. 4a). The user 680 sits on the platform 122
and raises his torso until his chest 696 makes contact with the
restraint arm 320. Thereafter, the user pulls his chest 696 or
upper torso into the arm 320 against the restraint of the arm 320
thereby causing his abdominal muscles to contract isometrically.
The user may hold this position for a number of seconds, and repeat
as desired.
[0165] FIG. 20 shows the user 680 using the horizontal restraint
member 320 of the restraint arm assembly 330 to perform an
isometric exercise to work the user's back muscles, more
specifically, the latissimus dorsi muscles, and the triceps brachii
muscles located in the upper arm. As a preliminary matter, the user
680 ensures that the swing arm 332 is moved to its fully vertical
position. The user sits up on the platform 122 with his legs 692
substantially perpendicular to his back 700 and his arms 702
outstretched in front of him extending generally parallel to his
legs 692. The user is positioned on the platform in such a way as
to allow the user to grasp the foam pads 415 and 417 of the
restraint arm 320. With his palms facing down, the user then pulls
on the restraint arm 320 in a downward direction to thereby cause
the isometric contraction of the user's latissimus dorsi muscles
and triceps brachii muscles. The user may hold this position for a
number of seconds, and repeat as desired.
[0166] FIG. 21 shows the user 680 using the arm restraint
attachment 152i to perform an isometric exercise to work the user's
rhomboid muscles (the muscles located between the shoulder blades).
As a preliminary matter, the user 680 ensures that the swing arm
332 is moved to its fully vertical position. Alternatively, to
provide increased clearance to the user 680, the restraint arm
assembly 330 could be detached from the frame 22 as described
below. The user 680 then lies down on the base 24 with his back
supported on the exercise platform 122. His head 684 is positioned
proximate the outer edge 48 of first short side 32, while the
remainder of his body extends toward the opposed second short side
34. The user places his arm 704 (and more specifically, his forearm
706) into the space S.sub.1 defined in U-shaped retaining member
442. Once in position, the user pulls his arm towards his body and
against the restraint created by the arm portion 476 of the
retaining member 442 thereby urging the user's rhomboid muscle to
isometrically contract. The user may hold this position for a
number of seconds, and repeat as desired. In FIG. 21, the user 680
is shown performing this exercise with his arm externally rotated.
It will be appreciated that this exercise could also be performed
with the arm internally rotated or with the palm of the hand turned
to face the body of the user.
[0167] FIG. 22 shows the user 680 using the sidewall 26 to perform
an isometric exercise to work one of the user's hip flexor muscles
and more specifically, the tensor fascia lata muscle. To get into
position, the user 680 stands on the platform 122 facing the second
short side 34 with his heels 690 adjacent the first short side 32
and his legs 692 spread approximately shoulder width apart. Once in
position, the user 680 abducts his right leg 692a approximately 20
degrees (that is, the user moves his right leg 692a away from the
left leg 692b) so that the blade of his foot 708 comes to bear
against the arc-shaped pad 304. The user 680 pulls his foot 708
into the pad 304 against the restraint created by the sidewall 26
thereby urging the user's tensor fascia lata muscle to
isometrically contract. The user may hold this position for a
number of seconds, and repeat as desired. The user may perform the
same exercise for his left leg by positioning himself on the
opposite short side 34.
[0168] FIG. 23 shows the user 680 using the dual foot restraint
attachment 132 to perform an isometric exercise to work one of the
user's lower leg muscles and more specifically, the popliteus
muscle located behind the knee. As a preliminary matter, the user
680 ensures that the swing arm 332 is moved to its fully vertical
position. Alternatively, to provide increased clearance to the user
680, the restraint arm assembly 330 could be detached from the
frame 22 as described below. The user 680 then lies down on the
base 24 with his back supported on the exercise platform 122. His
head 684 is positioned proximate the outer edge 48 of first short
side 32, while the remainder of his body extends toward the opposed
second short side 34. Alternatively, the user 680 can sit up on the
platform 122 with his back generally perpendicular to his legs 692.
The user then inserts his right foot 708a into the aperture 678 and
his left foot 708b into the aperture 676. Once in position, the
user rotates his lower legs inwardly and pulls each of the right
foot 692a and left foot 692b into the vertical member 664 of the
dual arch structure 660. In this case, the vertical member 664 acts
as the restraint against which the user is acting which urges the
popliteus muscles in the user's lower legs to isometrically
contract. The user may hold this position for a number of seconds,
and repeat as desired. This exercise may be performed one leg at a
time and may be performed with the lower leg or legs externally
rotated. When performed with the lower legs rotated externally, the
feet 692 and 692b would be urged to pull against the vertical
members 662 and 666 of the dual arch structure 660.
[0169] The examples described above are not intended to be
exhaustive or limiting in any way and are merely provided to
illustrate only some of the possible ways in which the isometric
exercise apparatus 20 may be used.
[0170] Once the user has completed performing exercises on the
isometric exercise apparatus 20, the frame 22 of the apparatus 20
could be collapsed to facilitate storage of the apparatus 20. The
procedure for moving the apparatus 20 from its in-use position 253
to its out-use position 251 is now described with reference to
FIGS. 24, 25 and 26. As an initial step, the pads 304 and 306, the
swing assembly 330 and all the attachments (i.e. the footpad 128,
the arm restraint attachments 152, and any others) are detached
from the isometric exercise apparatus 20. More specifically,
sufficient force is applied to the pads 304 and 306 to overcome the
magnetic forces which retain the pads 304 and 306 on the panel
212.
[0171] Next the swing assembly 330 is partially disassembled. The
indexing key 354 is disengaged the from the indexing plate 360 and
the rod 336 by rotating the indexing key 354 until it tabs 400 and
402 are aligned with the slots 382 and 384 of the indexing aperture
374 defined in the indexing plate 360 and the slots 350 and 352 of
the keyhole 346 defined in the rod 336 and then pulling out the
indexing key 354. The pivot pin 342 is then unfastened from the
base 24 and the locking pin 420 of the restraint arm 320 is moved
to its retracted or disengaged position 434, thereby releasing the
swing arm 332 from the frame 22.
[0172] Subsequently, the threaded connector 658 of the footpad 128
is unfastened from the base 24. If the dual foot restraint 660 is
mounted on the apparatus 20, it can be detached by unfastening its
threaded connector 672. To detach the arm restraint accessory 152
from the base, the connector arm 154 is pulled outwardly and
upwardly to release the locking pins 166 and 168 from the locking
recesses 180. With locking pins released, the connector arm 154 can
be pulled out of the slot 150.
[0173] The order of removal described above was provided as an
example only. It is not intended to be limiting. In other
embodiments, the order of removal for the accessories could be
modified. For instance, the arm restraint accessories could be
removed first, followed by the foot pad and culminating with the
arc-shaped pads.
[0174] Next, the lock bars 254 and 256 are removed from the frame
22 by removing the locking pins 303 and sliding the first and
second flange portions 268 and 274 of each lock bar 254, 256 out
from their respective stations 276a, 276b or 278a, 278b (as the
case may be) (see FIG. 25). The sidewall 26 is then be pivoted
about the hinge rod 146 and brought to its collapsed position 250.
With sidewall 26 bearing against the base 24, the frame 22 is now
collapsed and the apparatus 20 is in its out-of-use storage
position 253 as shown in FIG. 26. When in its out-of-use storage
position 253, the apparatus 20 is portable and can be relatively
easily carried or transported. In this embodiment, when collapsed
the frame 22 bereft of any attachments or accessories weighs
approximately 45 lbs. However, in other embodiments, the frame may
weigh less or more depending on the intended usage of the apparatus
and whether the portability of the apparatus is a factor to be
afforded greater or lesser importance for this intended usage.
[0175] Referring now to FIGS. 28, 29 and 32, there is shown a
storage rack 80 which is configured to hold one or more isometric
exercise apparatus 20 in the out-of-use, storage position 253. The
rack 80 has a frame 802 which includes a base 804 and a support
structure 806 carried on the base 804. The base 804 has a pair of
spaced apart structural side members 808 and 810 which are joined
to each other by a relatively thin, tie member 812 and a more
substantial cross member 814.
[0176] Each structural side member 808, 810 extends between a first
end 816 and an opposed second end 818. Formed in each structural
side member 808, 810 starting at the first end 816 and extending
toward the second end 818, is an elongate channel 820. However, the
channel 820 does not extend all the way to the second end 818. At a
location closer to the second end 818 than to the first end 816,
the channel 820 is closed off by an abutment face 822. As will be
explained in greater detail below, the elongate channel 820 acts a
guide means for directing and retaining the castors 72 and 74 of
the apparatus 20, as the apparatus 20 is placed on the storage rack
800. A tapered throat 822 (widest at the outermost edge and
narrowing in the direction of the second end 818) provides access
to the channel 820 and tends to facilitate insertion of the castors
72 and 74 into the channel 820. As best shown in FIG. 32, the
channel 820 itself is defined by a back portion 824 and a pair of
spaced apart legs 826 and 828 which are joined to, and stand proud
of, the back portion 824.
[0177] The tie member 812 is mounted to the first and second
structural side members 808 and 810 at locations closer to the
first ends 816 than to the second ends 818 thereof. In this
embodiment, the tie member 812 is provided with front and rear
flange portions 830 at either end for placement against the inner
vertical faces 831 of the structural side members 808 and 810.
Fasteners 832 attach the flange portions 830 to the structural side
members 808 and 810. In an alternative embodiment, the tie member
812 could be secured to the structural side member 808 and 810 by
welding.
[0178] The cross-member 814 is disposed between the structural side
members 808 and 810 adjacent the second ends 818 thereof. The
cross-member 814 has at each end a pair of front and rear flange
portions or tabs 834. In like fashion to the flange portions 830,
the flange portions 834 are placed against the inner vertical faces
831 of the structural side members 808 and 810 and secured in place
by fasteners 836.
[0179] The support structure 806 includes a pair of spaced apart,
first and second, tubular support arms 82 and 84 and a transverse
reinforcement member 844 connecting the support arms 82 and 84 to
each other. The reinforcement member 844 is attached to the support
arms 82 and 84 by fasteners 845. However, in other embodiments, the
reinforcement member could be welded to the support arms.
[0180] Each support arm 82, 84 has a proximal end 844 provided with
a circular flange portion 846 and a distal or free end 848. The
circular flange portion 846 abuts the top face 850 of the
cross-member 814 and is secured in place by fasteners 852. In other
embodiments, the support arms could be welded to the base. Each
support arm 82, 84 further includes a first vertically extending
portion 854 which runs from the first end 844 to a transition zone
or bend 856, and a second horizontally extending portion 858 which
runs from the bend 856 to the free end 846. The reinforcement
member 844 is secured to the first vertically extending portions
854 at a location closer to the bend 856 than to the first end
844.
[0181] As best shown in FIG. 29, the second horizontally extending
portion 854 extends perpendicular to the first vertically extending
portion 854 and runs parallel to the structural side members 808
and 810 and in the direction of the first ends 816 thereof. The
second horizontally extending portion 854 is carried above the base
804 at a height sufficient to accommodate the width W.sub.1 of base
24. The diameter of each second horizontally extending portion 854
is sized slightly smaller than the first and second bores 76 and 78
defined in the base 24 of the isometric exercise apparatus 20.
[0182] A pair of aligned bores 862 are defined in the second
horizontally extending portion 854 adjacent the free end 846. The
bores 862 are configured to accommodate a generally T-shaped
locking pin 864.
[0183] Placement of the apparatus 20 onto the storage rack 80 is
now described in greater detail with reference to FIGS. 30 and 31.
As a preliminary step, the locking pins 864 are disengaged from the
support arms 80 and 82. Then grasping the handles 56 and 60, the
user lifts the apparatus 20 and aligns the bores 76 and 78 with the
second horizontally extending portions 858 and ensures that the
castors 72 and 74 are in alignment with the channels 820 of the
structural side members 808 and 810. The second horizontally
extending portions 858 are then inserted into the bores 76 and 78,
and the apparatus 20 (now suspended from the support arms 82 and
84) is urged to travel toward the rear of the support rack 80 (i.e.
toward the vertically extending portions 854). The displacement of
the apparatus 20 along the support arms 82 and 84 is guided in part
by the engagement of the castors 72 and 74 within the channels 820.
Adjacent the bend 856, further movement of the apparatus 20 along
the support arms 82 and 84 is arrested by the vertically extending
portions 854 and the abutment faces 822 of the structural side
members 808 and 810. To ensure, the stowed apparatus 20 does not
accidentally disengage from the support rack 80, the locking pins
864 are put in place.
[0184] In FIG. 31, the support rack 80 is shown holding two
isometric exercise apparatuses 20a and 20b. But, the support rack
80 of this embodiment is configured to hold ten isometric exercise
apparatus placed one after the other. This need not be the case in
every application. In other embodiments, the support rack may be
configured to hold a greater or lesser number of apparatus. If the
apparatus 20 is destined for home use, the support rack may be
configured to hold a single unit.
[0185] Referring to FIGS. 33 to 35, there is shown an alternate
isometric exercise apparatus generally designated with reference
numeral 900. The apparatus 900 is generally similar to apparatus 20
in both structure and functionality. Like the apparatus 20, the
apparatus 900 possesses a frame 902 which includes a base 904 and a
sidewall 906 hingedly connected to the base 24 along a portion
thereof. However, the hinge connection used in apparatus 900 is
different than that used in apparatus 20. Similarly, much like the
base 24 of apparatus 20, the base 904 is configured to receive
motion restraint attachments or accessories. However, the manner in
which some of these accessories or attachments are attached to the
base 904 differs from that used to secure similar attachments to
the base 24. These design modifications are described in greater
detail below.
[0186] The base 904 includes a substantially rectangular panel 908
provided with a top face 910 (see FIG. 34) and an opposed bottom
face 912 (see FIG. 35). As best shown in FIG. 35, the shape of the
panel 908 is defined by a pair of opposed, relatively short first
and second sides 914 and 916, and a pair of opposed, relatively
long, first and second sides 918 and 920 extending between the
short sides 914 and 916. The first short side 914 meets the first
long side 918 at a first radiused corner 922, and joins the second
long side 916 at a second radiused corner 924. The two remaining
corners of the panel 908--third and fourth radiused corners 926 and
928--are formed by the juncture of the second short side 920 and
each of the first and second long sides 918 and 920, respectively.
At a location approximately four-fifths of the way between the
first and second long sides 918 and 920 proximate the first and
third corners 926 and 928, the outer edges 930 and 932 of the first
and second short sides 914 and 916 come in a short distance toward
each other to define shoulder portions 934 and 936. Beyond the
shoulder portions 934 and 936, the outer edges 930 and 932 are
parallel to each other as they extend toward their respective
corners 922 and 926.
[0187] In like fashion to the panel 27, the panel 908 is also
provided with first and second handles 940 and 942 which are
generally similar in structure and location to the handles 58 and
60 defined in the panel 27 and castors 944, 946, 948 and 950 which
correspond generally to castors 66, 68, 72 and 74, respectively.
Bores 952 and 954 resembling bores 76 and 78 in size and location
are defined in the panel 27. The isometric exercise apparatus 900
can be hung onto the support arms 82 and 84 of the rack 80 from the
bores 952 and 954.
[0188] As shown in FIG. 35, the bottom face 912 is provided with
several grip-enhancing bands or strips 960, 962, 964 and 966. These
bands are generally similar in shape to bands 90, 92, 94 and 96 and
are disposed on the bottom face 912 in a similar arrangement to
that shown in FIG. 7.
[0189] Referring now to FIGS. 33 and 34, the top face 28 has a
rectangular station 970 formed therein. The boundaries of the
station 970 are delimited by a frame 972 having margins 974, 976,
978 and 980. Each margin 974, 976, 978 extends outwardly toward a
corresponding outer edge 930, 932, 982, respectively. Secured
within the station 970 is an exercise platform 984 which supports
the user's body while he/she is performing exercises using the
isometric exercise apparatus 900. The exercise platform 984 is
similar to the exercise platform 122 shown in FIG. 3 in all other
respects.
[0190] In contrast to the panel 27 shown in FIG. 2, the panel 908
depicted in FIG. 33 does not have any hinge tubes. As explained in
greater detail below, in this alternate embodiment, the hinge
connection is formed with four hinge assemblies 1020, 1022, 1024
and 1026.
[0191] Referring now to FIGS. 33 and 35, a plurality of slots
generically identified with reference numeral 990 extends from the
outer edges 930, 932 and 982 into the panel 908 and toward the
station 970. As will be explained in greater detail below, the
slots 990 are adapted to receive a connector arm of an accessory of
the isometric exercise apparatus 900 (as shown in FIG. 37). The
slots 990 include twelve slots 990a, 990b, 990c, 990d, 990e, 990f,
990g, 990h, 990i, 990j, 990k and 990l, disposed at different
locations along the sides 914, 916 and 918 and having different
orientations relative to their corresponding outer edges 930, 932
and 982. The relative position and orientation of each slot 990a,
990b. 990c, 990d, 990e, 990f, 990g, 990h, 990i, 990j, 990k, 990l
substantially matches that of each corresponding slot 150a, 150b,
150c, 150d, 150e, 150f, 150g, 150h, 150i, 150j, 150k and 150l shown
in FIG. 7.
[0192] But for differences arising from their varying orientations,
the slots 990 all have a generally similar structure, such that a
description of one representative slot--slot 990d--will suffice for
the others. Referring now to FIG. 36, slot 990d is generally
similar to slot 150i in that it too has a tapered throat 992
(widest at the outer edge 930 and narrowing in the direction of the
slot) which tends to serve as a guide for locating the connector
arm 994 of the arm restraint attachment 996d into the slot 990d.
The throat 992 opens onto a relatively large central opening 998
whose profile is generally oblong. However, in contrast to the slot
150i, the slot 990d is not bounded on either side by C-shaped
channels and is not configured with any locking recesses.
[0193] Disposed along the margins 974, 976 and 978 at locations
corresponding to each slot 990, are a plurality of circular rebates
generically identified with reference numeral 986 that are defined
into the top face 910 of the panel 908. More specifically, there
are twelve rebates 986a, 986b, 986c, 986d, 986e, 986f, 986g, 986h,
986i, 986j, 986k and 986l. At the center of each rebate 986 is an
aperture 988 which opens onto an associated slot 990. As explained
in greater detail below, each aperture 988 is sized to receive a
locking pin 999 to secure the connecting arm 994 of an arm
restraint attachment 996 into a slot 990.
[0194] Referring now to FIG. 33, the sidewall 906 is now described
in greater detail. The sidewall 906 is generally similar to
sidewall 26 in that it also includes a substantially rectangular
panel 1000 provided with a first face 1002 (see FIG. 33) and an
opposed second face (not shown). The shape of the panel 1000 is
defined by a pair of opposed, relatively short first and second
sides 1002 and 1004, and a pair of opposed, relatively long, first
and second sides 1006 and 1008 extending between the short sides
1002 and 1004. The first short side 1002 meets the first long side
1006 at a first corner 1010, and joins the second long side 1008 at
a second corner 1012. The two remaining corners of the panel
1000--third and fourth corners 1014 and 1016--are formed by the
juncture of the second short side 1004 and each of the first and
second long sides 1006 and 1008, respectively.
[0195] In contrast to panel 212 shown in FIG. 2, the panel 1000
depicted in FIG. 33 does not have any hinge knuckles welded to its
outer edge. Instead, the panel 1000 of the sidewall 906 is hingedly
connected to the panel 908 of the base 904 with spaced apart,
first, second, third and fourth hinge assemblies 1020, 1022, 1024
and 1026. The hinge assemblies 1020, 1022, 1024 and 1026 are
oriented generally parallel to the outer edges 982 and 998 and are
disposed in the region which lies between the margin 980 and the
outer edge 998. The second and third hinge assemblies 1022 and 1024
are disposed between the first and fourth hinge assemblies 1020 and
1026.
[0196] Referring now to FIG. 36, each hinge assembly 1020, 1022,
1024 and 1026 includes a first hinge bracket 1030, a second hinge
bracket 1032 engageable with a portion of the first hinge bracket
1034, and a hinge pin 1036 for securing engagement of the first
hinge bracket 1032 to the second hinge bracket 1034. The first
hinge bracket 1030 includes a base plate 1036 and a pair of spaced
mounting tabs 1038 standing proud of the base plate 1036. The
mounting tabs 1038 and the base plate 1036 co-operate with each
other to define a channel (not visible) which is sized to receive
therein a portion of the first long side 1006 of the panel 1000.
The first hinge bracket 1032 is secured to the panel 1000 by a pair
of fasteners 1040 extending through each mounting tab 1038 and the
first and second faces of the panel 1000. Extending away from the
base plate 1036 opposite to the mounting tabs 1038, are a pair of
spaced apart hinge knuckles 1042 and 1044. Each hinge knuckle 1042,
1044 has an aperture 1046 defined therein sized to receive a
portion of the hinge pin 1036.
[0197] The second hinge bracket 1034 includes a base plate 1050 and
a single hinge knuckle 1052 standing proud of the base plate 1050.
The base plate 1050 is secured to the top face 910 of the base
panel 908 by fasteners 1054. When first hinge bracket 1032 is
engaged with the second hinge bracket 1034, the hinge knuckle 1052
is positioned between the hinge knuckles 1042 and 1044 with the
aperture (not shown) defined in the hinge knuckle 1052 aligned with
the apertures 1046 defined in the hinge knuckles 1042 and 1044 and
the hinge pin 1036 inserted therethrough.
[0198] Thus formed, the hinge connection between the base 904 and
the sidewall allows the sidewall 906 to be moved between a
collapsed position (not shown) and an upstanding position 1054
(shown in FIGS. 33 and 34). The apparatus 900 of this embodiment
employs a similar arrangement of side locking bars and receiving
stations to those employed in apparatus 20 to maintain the sidewall
906 in the upstanding position 1054. When the sidewall 906 is moved
to its collapsed position the first face 1002 of the sidewall 906
is brought opposite the top face 910 of the base 904 and the
apparatus 900 is now in its out-of-use, storage position.
[0199] Except as set out above, the panel 1000 of the sidewall 906
is otherwise configured similar to the panel 212 of the sidewall 27
is all respects.
[0200] Along the same vein, the apparatus 900 is provided with a
support or restraint arm assembly 1060 which is similar to the
support arm assembly 330 employed by the apparatus 20 in all
respects including structure and functionality, such that no
additional description is required.
[0201] Much like the apparatus 20, the apparatus 900 can be used
with a plurality of attachments or accessories for enhanced
versatility and comfort. Examples of such attachments are the third
arm restraint attachment 996 shown in FIGS. 38 and 39 and the
fourth arm restraint attachment 1090 shown in FIGS. 40 and 41, the
footpad 128 and the dual foot restraint accessory 132. Of course,
the apparatus 900 could be employed with other attachments as
well.
[0202] Referring now to FIG. 38, there is shown the third arm
restraint attachment 996. The attachment 996 is generally similar
to attachment 152 in that it includes the connector arm 994 for
attaching the arm restraint attachment 996 to the base 904, a
sleeve or retaining member 1062 releasably connected to the
connector arm 994 and a locking key 1064 similar to locking key 444
for securing the retaining member 1062 to the connector arm 994.
However, in contrast to the retaining member 442 which is generally
U-shaped, the retaining member 1062 in this embodiment is generally
C-shaped and resembles alternate retaining member 520 shown in FIG.
13e in all respects. The connector pin 1063 of the retaining member
1062 is configured for insertion into the socket member 1068 of the
connector arm 994 and is adapted to interact with the locking key
1064 in much the same manner as the male connector pin 462 shown in
FIG. 14b engages the socket 460 and interacts with locking key 444,
such that no additional description is required.
[0203] The connector arm 994 is generally similar to the connector
arm 154 in that it too is formed with a bar 1066 having upstanding
socket member 1068 integrally formed therewith. The bar 1066 has a
first end 1070 adapted for insertion into a slot 990 and a second
end 1072 which carries the socket member 1068. However, unlike the
bar 446, the bar 1066 does not have any locking pins projecting
from the lateral edges of the first end 1070. Additionally,
adjacent the first end 1070, the bar 1066 has three bores 1074,
1076 and 1078 extending between the top and bottom faces of the bar
1066. Except as described above, the connector arm 994 is otherwise
similar to the connector arm 154 in all respects, such that no
additional description is required.
[0204] It will be appreciated by a person skilled in the art that
the attachment 996 is attached to the base 904 in a different
manner than that employed by the attachment 152 of the apparatus
20. With specific reference to FIG. 39, to secure the arm restraint
attachment 996 to the base 904, the first end 1070 of the connector
arm 994 is inserted into a slot 990 and one of the bores 1074, 1076
and 1078 is aligned with the apertures 988 and 1080 defined in the
base 904. Thereafter, a locking pin 999 is inserted through the
aligned bore 1074, 1076 or 1078 and apertures 988 and 1082 to
thereby fix the attachment 996 in place.
[0205] The arm restraint attachment 1090 is now described with
reference to FIGS. 40 and 41. The attachment 1090 includes a
connector arm 1092, an extension rod 1094 releasably connected to
the connector arm 1092, a locking key 1095 for securing the lower
end 1096 of the extension rod 1094 to the connector arm 1092, a
retaining member 1098 releasably connected to the upper end 1100 of
the extension rod 1094, and a locking pin 1102 for securing the
upper end 1100 of the extension rod 1094 to the retaining member
1098. The connector arm 1092 is similar to the connector arm 994 in
all respects such that no further description is required.
[0206] Turning now to the extension rod 1094, it has a generally
cylindrical body 1104 that extends between the upper and lower ends
1100 and 1096. The lower end 1096 is configured similarly to the
male connector pin 462 shown in FIG. 13c in that it too is provided
with three indexing openings 1106, 1108 and 1110 cut into the body
1104 at spaced apart locations. The first indexing opening 1106 is
located closest to the upper end 1100. The second indexing opening
1108 is disposed relatively lower on the body 1104 than the opening
1106, while the third indexing opening 1110 is located furthest
from the upper end 1098 close to the lower end extremity 1112. The
indexing openings 1106, 1108 and 1110 are not all aligned with each
other along a common vertical axis--some are radially staggered
from each other. More specifically, the first and third indexing
openings 1106 and 1110 are vertically aligned with each other, but
are radial staggered from the second opening 1108 by an angle of 90
degrees. The lower end 1096 is configured for insertion into the
socket 1114 and is adapted to interact with the locking key 1095 in
much the same manner as the male connector pin 462 shown in FIG.
14b engages the socket 460 and interacts with locking key 444, such
that no additional description is required.
[0207] A short distance down from the upper end 1100, the body 1104
has a notch or groove 1120 defined therein. When the extension rod
1094 is inserted into the blind bore 1122 of the retaining member
1098 (shown in FIG. 41), the notch 1120 is alignable with an
aperture 1124 defined in the back face 1126 of the retaining member
1098. To secure the retaining member 1098 to the extension rod
1094, the locking pin 1102 is inserted through the aperture 1124
and engages the notch 1120.
[0208] In this embodiment, the extension rod 1094 measures
approximately 12 inches. In other embodiments, the length of the
rod could be modified to suit a particular application.
[0209] Referring to FIGS. 40 to 41, the retaining member 1098 is
now described in greater detail. The retaining member 1098 has a
body 1130 defined by back face 1126, an opposed arcuate face 1132,
a pair of lateral faces 1134 extending between the back face 1126
and the arcuate face 1132, a top face 1136 and an opposed bottom
face 1138. The back face 1126 is generally square and has a
fingerprint-shaped rebate 1140 defined therein at a location closer
to the bottom face 1138 than to the top face 1136. The aperture
1124 is formed within the rebate 1140. Similarly, the bore 1122 is
defined into the bottom face 1138.
[0210] The arcuate face 1132 defines a partial or open cuff 1142
which is sized to receive a portion of user's arm. The cuff 1142
acts as a restraint to prevent movement of the user's arm during
the performance of an isometric exercise. In particular, it may be
used advantageously to resist or restrain movements that have
vertical force components. Additionally, the provision of extension
rod 1094 further enhances the versatility of the apparatus 900 by
enabling the user to perform isometric exercises that target
different joint angles and muscles than those which would have
otherwise been targeted using the arm restraint attachments 152,
540 and 996.
[0211] It should be appreciated that the extension rod 1094 and
retaining member 1098 could be used to equal advantage with the
connector arm 154 shown in FIG. 13c.
[0212] FIG. 42 shows yet another arm restraint attachment
designated generally with reference numeral 1150. The attachment
1150 includes a connector arm 1152, an extension rod 1154
releasably connected to the connector arm 1152, a locking key 1156
for securing the lower end of the extension rod 1154 to the
connector arm 1152, a retaining member 1160 releasably connected to
the upper end of the extension rod 1154, and a locking pin 1164 for
securing the upper end of the extension rod 1154 to the retaining
member 1160. The connector arm 1152, the extension rod 1154 and the
locking key 1156 are similar to their counterpart elements 1092,
1094, 1095 in all respects such that no further description is
required.
[0213] Referring now to FIG. 43, the retaining member 1160 has a
body 1170 defined by a back wall 1172, a bottom wall 1174, an
arcuate wall 1176 joining the back wall 1172 and the bottom wall
1174, and a pair of lateral faces 1175 defined by edges of the back
wall 1172, the bottom wall 1174 and the arcuate wall 1176. The back
face 1172 is generally rectangular and has a fingerprint-shaped
rebate 1180 defined therein at a location closer to the bottom wall
1174 than to the juncture of the back wall 1172 and the arcuate
wall 1176. An aperture 1182 is formed within the rebate 1180.
Similarly, a bore (not visible) for receiving the upper end of the
extension rod 1154 is defined into the bottom wall 1174.
[0214] The arcuate wall 1176 and the interior face 1186 cooperate
with each other to form a closed cuff 1188 which bounds a generally
oval-shaped opening 1190. The opening 1190 is sized to receive a
portion of the user's arm. The cuff 1188 acts as a restraint to
prevent movement of the user's arm during the performance of an
isometric exercise. In particular, it may be used advantageously to
resist or restrain movements that have vertical force components.
For enhanced versatility, the oval opening 1190 is oriented with
its long axis 1192 disposed at an angle of 45 degrees from the
vertical axis V-V. It will be appreciated that in other
embodiments, the orientation of the opening could be modified to
suit a particular application. In a further alternative, the shape
of the opening could be changed to be circular or elliptical, for
instance, or it could be configured with a different geometric
shape altogether.
[0215] In each of the various arm restraint attachments described
above, the retaining member and the connector arm are configured to
be detachable from each other. This need not be the case in every
application. In an alternate embodiment, the retaining member may
be permanently fixed to the connector arm.
[0216] A preferred embodiment and several alternative embodiments
of the present invention have been described above. However, it
should be appreciated that the isometric exercise apparatus could
be modified further still in accordance with the principles of the
present invention. For instance, in the preferred embodiment, the
isometric exercise apparatus 20 is configured for a single user. In
an alternative embodiment, the apparatus could be modified by
constructing a relatively larger base provided with two
side-by-side exercise platforms sharing a common sidewall. In such
a case, the common side wall would be provided with foam pads and
bores on both of its faces. Each user would perform his/her
exercises on his/her respective exercise platform. This modified
apparatus could be used, for instance, in an exercise class
setting.
[0217] Although the foregoing description and accompanying drawings
relate to specific preferred embodiments of the present invention
as presently contemplated by the inventor, it will be understood
that various changes, modifications and adaptations, may be made
without departing from the spirit of the invention.
* * * * *