U.S. patent application number 16/003157 was filed with the patent office on 2018-10-11 for rotary exercise system.
The applicant listed for this patent is Maxx Bench. Invention is credited to Philip Matthew Hunt, James J. Lennox, David Vorozilchak.
Application Number | 20180290004 16/003157 |
Document ID | / |
Family ID | 61071261 |
Filed Date | 2018-10-11 |
United States Patent
Application |
20180290004 |
Kind Code |
A1 |
Lennox; James J. ; et
al. |
October 11, 2018 |
ROTARY EXERCISE SYSTEM
Abstract
A rotary exercise system in one embodiment includes a chassis
configured for mounting to stationary support members, a rotational
support shaft rotatably coupled to chassis, and handle bar assembly
coupled to the support shaft and manually rotatable therewith by a
user. A variable resistance mechanism applies a user-adjustable
rotational resistance force on the support shaft, which changes the
force required to be applied by the user to rotate the handle bar
assembly during an exercise routine. In some embodiments, the
resistance mechanism may be a frictional resistance mechanism, such
as a drum or disc brake assembly. A user-operated control actuator
allows the user to readily change resistance settings to increase
or decrease the rotational resistance imparted to the support shaft
by the resistance mechanism. In some implementations, the chassis
may be detachably mounted on vertical supports of a power rack and
adjustable in height for performing different exercise
routines.
Inventors: |
Lennox; James J.;
(Shickshinny, PA) ; Vorozilchak; David;
(Shavertown, PA) ; Hunt; Philip Matthew;
(Kintnersville, PA) |
|
Applicant: |
Name |
City |
State |
Country |
Type |
Maxx Bench |
Wilkes Barre |
PA |
US |
|
|
Family ID: |
61071261 |
Appl. No.: |
16/003157 |
Filed: |
June 8, 2018 |
Related U.S. Patent Documents
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Application
Number |
Filing Date |
Patent Number |
|
|
15666919 |
Aug 2, 2017 |
10004933 |
|
|
16003157 |
|
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|
62369793 |
Aug 2, 2016 |
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Current U.S.
Class: |
1/1 |
Current CPC
Class: |
A63B 21/012 20130101;
A63B 21/00069 20130101; A63B 21/005 20130101; A63B 23/1218
20130101; A63B 2225/093 20130101; A63B 21/00192 20130101; A63B
21/4049 20151001; A63B 21/169 20151001; A63B 21/0087 20130101; A63B
7/045 20130101; A63B 21/015 20130101; A63B 21/4035 20151001; A63B
21/00072 20130101; A63B 1/00 20130101; A63B 22/04 20130101; A63B
21/152 20130101; A63B 21/22 20130101; A63B 21/068 20130101; A63B
2071/0694 20130101; A63B 21/0083 20130101; A63B 69/0048 20130101;
A63B 21/0084 20130101 |
International
Class: |
A63B 21/00 20060101
A63B021/00; A63B 1/00 20060101 A63B001/00; A63B 21/015 20060101
A63B021/015; A63B 21/068 20060101 A63B021/068; A63B 69/00 20060101
A63B069/00; A63B 21/22 20060101 A63B021/22; A63B 23/12 20060101
A63B023/12; A63B 21/012 20060101 A63B021/012 |
Claims
1. A rotary exercise system comprising: a chassis configured for
mounting to a stationary support structure; an elongated rotational
support shaft rotatably supported by the chassis, the support shaft
rotatable in opposing directions about an axis of rotation; a
plurality of handle bars coupled to the support shaft and rotatable
therewith, the handle bars arranged to encircle the support shaft
and configured for grasping by a user; a variable resistance
mechanism operably coupled to the support shaft, the resistance
mechanism configured and operable to apply a selectable rotational
resistance on the support shaft which is adjustable by the user;
wherein adjusting the resistance mechanism increases or decreases a
physical force required to be exerted manually by a user on the
handle bars in order to rotate the support shaft.
2. The exercise system according to claim 1, wherein the resistance
mechanism comprises a frictional disc brake assembly operably
coupled to the support shaft which applies a frictional resistance
force on the support shaft.
3. The exercise system according to claim 2, wherein the disc brake
assembly comprises at least one disc-shaped rotor fixedly coupled
to the support shaft and a pair of brake pads frictionally engaged
with the rotor, the brake pads moveable towards or away from the
rotor to change a frictional force applied to the rotor by the
pads.
4. The exercise system according to claim 3, wherein the brake pads
are coupled to a caliper which movably supports the brake pads on
opposing sides of the rotor, the brake pad axially moveable into
and out of engagement with the rotor.
5. The exercise system according to claim 4, further comprising a
resistance control assembly operably coupled to the caliper, the
resistance control assembly comprising a manually adjustable
control actuator having a plurality of operating positions and a
control linkage that mechanically couples the actuator to the
caliper, wherein changing position of the actuator causes the
caliper to increase or decrease pressure applied to the rotor by
the brake pads for changing the frictional force on the support
shaft.
6. The exercise system according to claim 5, further comprising a
cam lever connected to the control linkage and pivotably mounted to
the caliper, the cam lever when activated by the control actuator
moves the brake pads away or towards the rotor.
7. The exercise system according to claim 1, wherein the handle
bars are oriented parallel to the rotational support shaft.
8. The exercise system according to claim 1, wherein the handle
bars are attached to a support frame rigidly attached to the
support shaft and rotatable therewith.
9. The exercise system according to claim 8, wherein the support
frame comprises first and second side support structures fixedly
mounted on the support shaft, the handle bars each spanning between
the first and second side support structure and attached
thereto.
10. The exercise system according to claim 9, wherein each side
support structure includes a plurality of radial arms to which the
handle bars are attached.
11. The exercise system according to claim 10, wherein the radial
arms are configured for mounting the handle bars thereon in a
plurality of different distances from the support shaft.
12. The exercise system according to claim 9, wherein the chassis
comprises first and second mounting rack assemblies each configured
for detachable mounting between a pair of vertical support members
of the support structure, and the mounting rack assemblies, side
support structures, and rotational support shaft being coupled
together to collectively form a self-supporting rotary exercise
assembly which is transportable as a unit and mountable on the
vertical support members.
13. The exercise system according to claim 1, wherein the
rotational resistance mechanism is a magnetic resistance mechanism
comprising a rotor fixed to the support shaft and centered between
a pair of magnets adjustable in position with respect to the rotor,
wherein the rotational resistance created by the magnets on the
support shaft changes based on the proximity of the magnets to the
rotor.
14. The exercise system according to claim 1, wherein the
rotational resistance mechanism is a drum brake assembly coupled to
the support shaft and operable to apply a frictional rotational
resistance on the support shaft.
15. A rotary exercise system comprising: a stationary support
structure comprising pair of spaced apart vertical support members;
a chassis comprising first and second mounting rack assemblies,
each mounting rack assembly configured for mounting to one of the
support members; an elongated rotational support shaft rotatably
supported by the first and second mounting rack assemblies, the
support shaft rotatable in opposing directions about an axis of
rotation; a handle bar assembly comprising a plurality of elongated
handle bars extending between a pair of side support structures
rigidly coupled to the support shaft for rotation therewith, the
handle bars arranged for grasping by a user and circumferentially
spaced apart around the support shaft; a variable frictional
resistance mechanism operably coupled to the support shaft, the
resistance mechanism configured and operable to apply a selectable
rotational resistance on the support shaft which is adjustable by
the user; wherein adjusting the resistance mechanism increases or
decreases a physical force required to be exerted manually by a
user on the handle bars in order to rotate the support shaft.
16. The exercise system according to claim 15, wherein the
frictional resistance mechanism is a disc brake assembly including
a rotor coupled to the support shaft for rotation therewith, a
caliper comprising axially movable first and second portions each
including a brake pad that frictionally engages the rotor, and a
user-operated resistance control mechanism operably coupled to the
caliper that moves the brake pads towards or away from engagement
with the rotor to increase or decrease a frictional force applied
to the rotor respectively.
17. The exercise system according to claim 16, wherein the disc
brake assembly is mounted to and supported by the first or second
mounting rack assembly.
18. The exercise system according to claim 15, wherein the
frictional resistance mechanism is a drum brake assembly coupled to
the support shaft and operable to apply rotational resistance to
the support shaft.
19. The exercise system according to claim 15, wherein the first
and second mounting rack assemblies each include mounting holes
which are aligned with mounting holes in the vertical support
members, and fasteners are inserted through the aligned mounting
holes to lock the first and second mounting rack assemblies in
position on the vertical support members.
20. The exercise system according to claim 15, wherein the first
and second mounting rack assemblies are slideable along the
vertical support members in a plurality of fixed mounting positions
to select a height of the handle bar assembly from a support
surface on which a user stands.
21. The exercise system according to claim 15, wherein the support
structure is a free-standing power rack.
22. The exercise system according to claim 15, wherein the support
structure is a wall-mounted box frame which comprises the vertical
support members configured for mounting in a cantilevered manner to
a wall.
23. A rotary exercise system comprising: a pair of spaced apart
stationary vertical support members; a chassis comprising first and
second mounting rack assemblies, each mounting rack assembly
configured for mounting to one of the vertical support members in a
selected position; an elongated rotational support shaft rotatably
supported by the first and second mounting rack assemblies, the
support shaft rotatable in opposing directions about an axis of
rotation; a handle bar assembly comprising a plurality of elongated
handle bars extending between a pair of side support structures
rigidly coupled to the support shaft for rotation therewith, the
handle bars arranged for grasping by a user and circumferentially
spaced apart around the support shaft; a frictional resistance
mechanism supported by the first or second mounting rack assembly
and operably coupled to the support shaft, the resistance mechanism
configured and operable to apply a selectable rotational resistance
on the support shaft which is adjustable by the user; a
user-operated control actuator operably coupled to the frictional
resistance mechanism, the control actuator having a plurality of
user selectable resistance settings; wherein adjusting the control
actuator to select one of the resistance settings increases or
decreases a physical force required to be exerted manually by the
user on the handle bars in order to rotate the support shaft.
24. The exercise system according to claim 23, wherein the
frictional resistance mechanism is a drum brake or a disc brake
assembly.
Description
CROSS-REFERENCE TO RELATED APPLICATIONS
[0001] The present application is a continuation of U.S. patent
application Ser. No. 15/666,919 filed Aug. 2, 2017, which claims
the benefit of priority to U.S. Provisional Application No.
62/369,793 filed Aug. 2, 2016; the entireties of which are
incorporated herein by reference.
BACKGROUND
[0002] The present invention relates to a rotary exercise system
with adjustable rotational resistance to improve training for
climbing, pull-ups, CrossFit, general upper body strength, and
other forms of fitness.
[0003] Traditional means of climbing exercise equipment consume
large amounts of space and are potentially dangerous. Elevated
monkey bars often seen in CrossFit games, attached to rigs and
racks, and included in current multi-functional fitness setups
designed for multiple users are designed to elevate users sometimes
as high as 12 ft. in the air. Fatigue and muscle failure while
climbing these pieces of equipment could prove to be extremely
dangerous. Other prior approaches of overhead exercise equipment to
simulate continuous climbing or pull-ups include complex designs
with many parts, often requiring electricity and motors. Several of
the designs utilize a conveyor belt like system with handle bars.
Still others may have free spinning handles or bars providing
minimal strength training. The foregoing devices further lack
versatility for working different muscle groups and performing
different exercise routines.
[0004] A need exists for an improved and versatile rotary exercise
system.
SUMMARY
[0005] A rotary exercise system with user-adjustable rotational
resistance is described in this application that allows for the
same foregoing climbing exercises and motions to be performed in a
small space and at a controlled height. The exercise system
generally comprises a bi-directionally rotating handle bar assembly
rotatably coupled to a support chassis. A resistance mechanism
applies a user selectable and adjustable rotational resistance to
the handle bar assembly, making it more or less difficult for the
user to rotate the handle bars as desired. The handle bar assembly
may be mounted at a variety of heights from near the floor and
upwards to provide different exercise routines for working various
muscle groups including the arms, chest, and legs. None of the
prior approaches include a handle bar assembly rotating on a single
axis of rotation with adjustable rotational resistance in which the
mechanism is directly powered manually by the user.
[0006] The rotary exercise system may be used in a variety of
mounting positions and heights to permit the user to perform
different exercise routines. When the user is suspended freely from
the handlebars as in a traditional pull-up exercise, the downward
force of gravity of the user's body weight generates a moment about
the axis of rotation and thus rotation of the system. When a user
is firmly planted on the ground, either sitting or reclining, the
force exerted by the user's muscles generates rotation of the
rotary apparatus.
[0007] The rotating exercise apparatus allows a user to simulate
continuous upward climbing while staying in a controlled location,
at a controlled height. It creates a unique, space saving climbing
experience, a safer environment, an effective work out, and gives
users a greater sense of accomplishment and enjoyment compared to
standard pull-up bars, inclined monkey bars, rock climbing walls,
and free-climbing.
[0008] The adjustable rotational resistance control disclosed
herein allows the user to regulate the rate of rotation to
accommodate users of different body weight and that desired for
different exercises. For instance, a larger user with a higher body
weight will generate a greater force against the resistance
mechanism. By increasing the rotational resistance, the rate of
rotation will remain controlled during use. Greater resistance is
also beneficial for explosive exercises such as two handed jump
pull-ups from bar to bar. By decreasing the rotational resistance,
the apparatus accommodates smaller users with lower body weight and
higher speed exercises. With different accessories attached to the
bars, the rotating resistance climber can provide varied handholds
thus giving a comprehensive forearm and grip workout. These
handhold accessories can include but are not limited to: ropes,
towels, ball grips, rock-climbing hand holds, wooden dowels of
varying thicknesses, etc.
[0009] With adjustable height and resistance, the rotating
resistance system can provide a superior workout for any fitness
level. It is usable for elite athletes who can hold their whole
body weight and continually climb. It is also usable with less
resistance while users stand on the ground and need to work up to
full pull-ups with their whole body weight suspending in air while
hanging from the handle bars.
[0010] In one aspect, a rotary exercise system includes: a chassis
configured for mounting between a pair of stationary elongated
support members; an elongated rotational support shaft rotatably
supported by the chassis, the support shaft rotatable in opposing
directions about an axis of rotation; a plurality of handle bars
coupled to the support shaft and rotatable therewith, the handle
bars arranged to encircle the support shaft and be graspable by a
user; a variable resistance mechanism operably coupled to the
support shaft, the resistance mechanism configured and operable to
apply a selectable rotational resistance on the support shaft which
is adjustable by the user; wherein adjusting the resistance
mechanism increases or decreases a physical force required to be
exerted manually by a user on the handle bars in order to rotate
the support shaft.
[0011] In another aspect, a rotary exercise system includes: a pair
of spaced apart vertical support members; a chassis comprising
first and second mounting rack assemblies, each mounting rack
assembly configured for detachable mounting to one of the vertical
support members in a plurality of positions; an elongated
rotational support shaft rotatably supported by the first and
second mounting rack assemblies, the support shaft rotatable in
opposing directions about an axis of rotation; a handle bar
assembly comprising a plurality of elongated handle bars extending
between a pair of side support structures rigidly coupled to the
support shaft for rotation therewith, the handle bars arranged for
grasping by a user and circumferentially spaced apart around the
support shaft; a variable frictional resistance mechanism operably
coupled to the support shaft, the resistance mechanism configured
and operable to apply a selectable rotational resistance on the
support shaft which is adjustable by the user; wherein adjusting
the resistance mechanism increases or decreases a physical force
required to be exerted manually by a user on the handle bars in
order to rotate the support shaft.
[0012] In another aspect, a rotary exercise system includes: a pair
of spaced apart vertical support members; a chassis comprising
first and second mounting rack assemblies, each mounting rack
assembly configured for detachable mounting to one of the vertical
support members in a plurality of positions; an elongated
rotational support shaft rotatably supported by the first and
second mounting rack assemblies, the support shaft rotatable in
opposing directions about an axis of rotation; a handle bar
assembly comprising a plurality of elongated handle bars extending
between a pair of side support structures rigidly coupled to the
support shaft for rotation therewith, the handle bars arranged for
grasping by a user and circumferentially spaced apart around the
support shaft; a frictional resistance mechanism supported by one
of the first or second mounting rack assemblies and operably
coupled to the support shaft, the resistance mechanism configured
and operable to apply a selectable rotational resistance on the
support shaft which is adjustable by the user; a user-operated
control actuator operably coupled to the frictional resistance
mechanism, the control actuator having a plurality of user
selectable resistance settings; wherein adjusting the control
actuator to select one of the resistance settings increases or
decreases a physical force required to be exerted manually by the
user on the handle bars in order to rotate the support shaft.
BRIEF DESCRIPTION OF THE DRAWINGS
[0013] The features of the preferred embodiments will be described
with reference to the following drawings where like elements are
labeled similarly, and in which:
[0014] FIG. 1 is a perspective view of a rotary exercise system
according to the present disclosure including a rotatable handle
bar assembly and floor-supported exercise rack for mounting the
handle bar assembly thereon;
[0015] FIG. 2 is a front elevation view thereof;
[0016] FIG. 3 is a rear elevation view thereof;
[0017] FIG. 4 is a side elevation view thereof;
[0018] FIG. 5 is a top plan view thereof;
[0019] FIG. 6 is a bottom plan view thereof;
[0020] FIG. 7 is an exploded view of the handle bar assembly and
its rack mounting structure;
[0021] FIG. 8 is a side view of a frictional rotational resistance
device in the form of a disc brake assembly;
[0022] FIG. 9 is a front view thereof mounted on the handle bar
rack mounting assembly;
[0023] FIG. 10 is a perspective view of an alternative embodiment
of a floor and wall-mounted exercise rack with handle bar assembly
mounted thereon;
[0024] FIG. 11 is a perspective view of another alternative
embodiment of a wall-mounted exercise rack with handle bar assembly
mounted thereon;
[0025] FIG. 12 is a perspective view of the handle bar assembly
with an alternative frictional rotational resistance device in the
form of a drum brake assembly;
[0026] FIG. 13 is a schematic side view of a non-contact magnetic
rotational resistance device; and
[0027] FIG. 14 is a front view thereof mounted on the handle bar
rack mounting assembly.
[0028] All drawings are schematic and not necessarily to scale. A
reference herein to a figure number herein that may include
multiple figures of the same number with different alphabetic
suffixes shall be construed as a general reference to all those
figures unless specifically noted otherwise.
DETAILED DESCRIPTION
[0029] The features and benefits of the invention are illustrated
and described herein by reference to exemplary embodiments. This
description of exemplary embodiments is intended to be read in
connection with the accompanying drawings, which are to be
considered part of the entire written description. Accordingly, the
disclosure expressly should not be limited to such exemplary
embodiments illustrating some possible non-limiting combination of
features that may exist alone or in other combinations of
features.
[0030] In the description of embodiments disclosed herein, any
reference to direction or orientation is merely intended for
convenience of description and is not intended in any way to limit
the scope of the present invention. Relative terms such as "lower,"
"upper," "horizontal," "vertical,", "above," "below," "up," "down,"
"top" and "bottom" as well as derivative thereof (e.g.,
"horizontally," "downwardly," "upwardly," etc.) should be construed
to refer to the orientation as then described or as shown in the
drawing under discussion. These relative terms are for convenience
of description only and do not require that the apparatus be
constructed or operated in a particular orientation. Terms such as
"attached," "affixed," "connected," "coupled," "interconnected,"
and similar refer to a relationship wherein structures are secured
or attached to one another either directly or indirectly through
intervening structures, as well as both movable or rigid
attachments or relationships, unless expressly described
otherwise.
[0031] As used throughout, any ranges disclosed herein are used as
shorthand for describing each and every value that is within the
range. Any value within the range can be selected as the terminus
of the range.
[0032] Referring initially to FIGS. 1-6, a rotary exercise system
generally comprises a rotary apparatus in the form of handle bar
assembly 20 rotatably mounted to a chassis 21 configured for
detachable mounting to and between at least two vertical uprights
or supports 22 of a stationary support frame or structure. In one
non-limiting embodiment, the support structure may be a
free-standing power rack 24 as shown comprising fours vertically
elongated support members 22 and a plurality of horizontal cross
members 23 spanning between the support members to form a rigid
space frame. The bottom ends of the support members 22 are
configured for engaging a generally flat floor support surface 25
of any suitable type and construction. Support members 22 and cross
members 23 are metal structural elements (e.g. steel, aluminum,
and/or titanium) which may be solid or have an open tubular
construction for weight reduction. Cross members 23 may be
permanently attached to the vertical support members 22 or
removable attached thereto such as via fasteners as shown.
[0033] In one non-limiting embodiment, the chassis 21 may comprise
a first (e.g. right) and second (e.g. left) mounting rack assembly
26. The mounting rack assemblies 26 may be specifically configured
for detachable securement to the vertical supports 22 of the power
rack 24 or alternatively the vertical supports of another type
support structure. In one embodiment, each mounting assembly 26
comprises a mounting bracket 27 complementary configured and
dimensioned to the transverse cross-sectional shape and size of the
vertical supports 22. Brackets 27 may be three-sided collar in one
embodiment comprising an open rear, opposing front wall, and two
adjoining sidewalls extending perpendicularly rearward from the
front wall. Brackets 27 further define a cavity 28 therein for
receiving and securing the vertical support 22. Each bracket 27 may
be attached to a vertical support 22 by horizontally inserting the
support into cavity 28 of the bracket. When the vertical supports
22 are inserted into the cavities 28, the brackets 27 are
vertically slideable along the vertical supports of the rack 24 to
a user-selectable desired mounting position or height of the handle
bar assembly 20. Each bracket includes one or more mounting holes
29 which are concentrically alignable with corresponding mounting
holes 30 formed the vertical supports 22 of the power rack 24.
Removable fasteners 31 such as without limitation bolts or pins are
provided for insertion through each pairs of aligned holes 29, 30
for securing and fixing the bracket in position on the power rack.
Pins if used for fasteners 31 may be any type or configuration
compatible for use with the holes of the power rack vertical
supports 22.
[0034] It bears noting that the three-sided mounting bracket 27
allows the chassis 21 to be mounted to the power rack 24 without
partially disassembling the rack. In other possible embodiments,
however, the centrally open brackets 27 may be have a completely
enclosed tubular cross-sectional shape thereby forming an annular
collar with four opposing perpendicular walls (see, e.g. FIG. 7)
that completely encircles the power rack vertical support 22 when
inserted through the cavity 28 of the bracket. This latter design
is mounted by vertically sliding the bracket onto the top end of
the rack vertical support 22 and sliding the bracket downward to
the desired mounting position. Of course, other configurations of
mounting brackets 27 may be used in other embodiments beyond the
foregoing non-limiting examples so long as the chassis may be
fixedly attached to the rack vertical supports 22. In yet other
possible implementations, the mounting brackets 27 may be
non-removably and permanently attached to other types of dedicated
support structures with vertical supports such as via welding.
[0035] It will be appreciated that the rotary exercise system is
not limited in its applicability to free standing power racks
alone, which represented only one of many possible mounting
options. In other possible embodiments, the chassis 21 of the
exercise system may be attached to a wall mounted power rack 240 as
shown in FIG. 10. This rack comprises two vertical support members
22 configured to rest on a support surface. These support members
22 are each anchored near both the top and bottom ends to a wall
structure by horizontal supports 23. The horizontal supports 23 are
configured for mounting to the wall structure, and may include end
flanges 230 with holes to receive fasteners as depicted or other
appurtenances to facilitate anchoring to the wall structure. In yet
other possible embodiments, entirely wall mounted vertical members
22 may be provided as shown in FIG. 11 which do not extend to the
floor. Such a construction comprises a box frame with shortened
height comprising four vertical support members 22 and horizontal
supports 23 extending therebetween as shown. The rear vertical
members 22 are attached to a wall structure and the front two
verticals are used for mounting the rotary exercise system. This
mounting rack is dedicated solely to the rotary exercise machine
and may be a self supporting unit including the mounting rack and
rotary handle bar unit and all appurtenances described further
herein. Accordingly, it will be clear to those in the art that
numerous mounting variations of the rotary exercise system are
possible and does not limit the invention.
[0036] The present rotary exercise system is further not limited to
mounting on vertical supports of "power racks" or portions thereof.
Instead, the system only requires two rigid and stationary members
of any orientation for mounting and is thus not limited in its
applicability by the construction of the structure that supports
stationary members. For example, although the figures depict
horizontal mounting of the exercise system on a pair of vertical
supports (i.e. handle bars extending horizontally), it will be
appreciated that the exercise system may be used in a vertical
orientation with the handle bars extending vertically instead. In
this case, the main support members 22 may instead be oriented
horizontally for securing the chassis 21 thereto. Such an
orientation would allow other types of exercise motions to be
performed by the user (e.g. pulling on the handle bars with one arm
and pushing the handle bars with the other arm).
[0037] The structure of the handle bar assembly 20 will now be
described. Referring to FIGS. 1-7, the rotary handle bar assembly
20 includes a central or main rotational support shaft 41 and
plurality of handle bars 40 coupled to the support shaft and
rotatable therewith. Support shaft 41 defines an axis or rotation
RA of the handle bar assembly. In one embodiment, support shaft 41
and handle bars 40 may each have an elongated cylindrical shape
which may have a textured or knurled surface to facilitate gripping
by the user. In other embodiments, handle bars 40 may have
different shapes or be other entirely different type elements such
as without limitation ball grips, rock climbing handles or grips,
towels, pegs, ropes, etc.
[0038] Handle bars 40 may be coupled to support shaft 41 by a
support frame comprising a pair of side support structures 42
laterally spaced apart on the shaft. In one embodiment, each side
support structure 42 may include an X-shaped lateral support member
43 rigidly attached to the support shaft 41 such as via welding to
be rotatable in unison therewith. Other forms of rigid attachment
such as bolting, etc. may be used. Each lateral support member 43
may comprise four radial arms 46 in one embodiment which intersect
perpendicularly at the support shaft 41 and extend radially outward
therefrom as illustrated. The lateral support members 43 may be
located inboard on the rotational support shaft 41 such that an
outboard end portion 48 of the main support shaft 41 extends
laterally outwards for a distance beyond each support member 43 for
rotational mounting to each side mounting rack assembly 26, as
further described herein.
[0039] The lateral support members 43 may be constructed by casting
or forging as a monolithic unitary structure with each radial arm
46 being an integral part thereof. In other embodiments, lateral
support members 43 may be constructed from two or more structural
elements welded together. In the non-limiting illustrated
embodiment, the arms 46 may have a rectilinear cross-sectional
shape such as rectangular or square (i.e. rectangle with even
sides). Other shapes however may be used. The arms 46 may comprise
hollow solid structure or tubular structures for weight reduction.
Lateral angle braces 47 may be attached between each adjacent arm
46 as shown to add structural rigidity to the lateral support
member 43. Braces 47 are obliquely angled to the radial arms
46.
[0040] Although each lateral support member 43 is depicted as an
open frame polygonal structure in the illustrated embodiment to
reduce weight, it will be appreciated that other configurations of
these support members may be used. For example, in other
embodiments lateral support members 43 may each be configured and
formed as round disks fixedly attached to the main support shaft
41. Each disk may have a solid structure or a partially open
structure with cutouts formed in the disk material to reduce
weight. The handle bars 40 are attached at their ends to the disks.
In some embodiments, the lateral support members 43 may each be
configured as a spoked wheel having a central hub fixedly attached
to the main support shaft 41, an outer circular and annular wheel
to which the handle bars 40 are attached, and a plurality of spokes
extending radially between the hub and wheel in a well-known
manner. Accordingly, the lateral support members 43 are not limited
to any particular configuration so long as the handle bars 40 may
be rigidly supported from the main support shaft 41.
[0041] The side support structures 42, main rotational support
shaft 41, handle bars 40, and mounting rack assemblies 26 are
preferably formed of a suitably strong metal for their given
application, such as steel, aluminum, titanium, or other. A
combination of metals may be used for different parts and need not
all be the same. The components may have a solid structure or
comprise hollow tubular elements for weight reduction.
[0042] With continuing reference now to FIGS. 1-7, opposing ends 45
of each handle bar 40 are attached to one of the radial arms 46 of
each X-shaped lateral support member 43. In one embodiment, the
handle bars 40 may be attached proximate to the terminal free end
of each arm 46 as shown. Handle bars 40 may be oriented parallel to
the main support shaft 41. When constructed, the handle bars may be
arranged to encircle the support shaft 41 as shown and are
positioned to be readily graspable by a user. In operation, a user
manually pulling or pushing on one of the handle bars 40 rotates
the main rotational support shaft 41 vis-a-vis the side support
structures 42. In one embodiment, the handle bars 30 may be rigidly
attached to the lateral support members 46. In other embodiments,
the handle bars 30 may be rotatably attached to the lateral support
members 43 and may be freely rotatable in relation thereto.
[0043] In the illustrated embodiments, four handle bars 40 are
provided based on the shape of the X-shaped lateral support members
43 each having four arms for mounting the handle bars. In other
possible embodiments, other configurations of side support
structures 42 may be provided having more or less number of arms;
thereby changing the number of handle bars which may be used. For
example, in some alternative embodiments the side support
structures may each have six equal spaced arms instead of four
thereby allowing six handle bars to be provided. Accordingly, the
invention is not limited to any particular number of handle bars
although preferably at least four are provided so that the user
does not have to reach overly far to grab the next successive
handle bar 40 as the handle bar assembly 20 rotates during the
exercise routine.
[0044] Referring now to FIGS. 1-7, each mounting bracket 27 further
includes a support bushing 32. Bushing 32 have a hollow tubular
shape and receive the outboard free end portions of the main
rotational support shaft 41 therein as shown. The bushings 32 are
preferably formed of as suitably strong metal and are rigidly
attached to the mounting brackets 27 by any suitable means, such as
welding. The interior circumferential surfaces of the bushings 32
provide annular bearing surfaces which support both ends of the
support shaft 41, and thus transmit the weight of handle bar
assembly 20 and user (when hanging therefrom) to mounting rack
assemblies 26 and in turn to the power rack vertical support
members 22. The support shaft 41 of the handle bar assembly 20 is
rotatable inside the bushings 32, thereby rotatably mounting the
support shaft 41 to the chassis 21. In one embodiment, the opposing
terminal end portions 48 of the support shaft 41 protrude outwards
beyond the bushings 32. This allows a removable travel stop 49 or
other retention device to be secured to each end portion 48 of the
shaft for trapping the handle bar assembly 20 between the side
mounting rack assemblies 26, thereby collectively forming a single
unit that can be easily transported and mounted on the power rack
vertical support members 22 by the user. In various embodiments,
for example without limitation, the travel stops 49 may comprise an
assembly of a bushing or washer 68 and fastener 67 threaded into an
axial threaded bore 66 formed in the ends of the shaft 41 as shown
in FIG. 7, an assembly of a washer and cotter pin extending through
a through-bore formed transversely through the end portion of the
shaft 41 (not shown), or any other suitable part or assembly of
parts operable to prevent the support shaft from pulling through
the two spatially separated bushings 32. It is well within the
ambit of those skilled in the art to provide a suitable travel stop
and shaft retention device.
[0045] The rotary exercise system further comprises at least one a
user-adjustable rotational resistance assembly or mechanism 50
operably coupled to the main rotational support shaft 41.
Resistance mechanism 50 is operable to apply a variable resistance
on the support shaft 41 having a level of resistance which may be
preselected by the user. The greater the resistance applied to the
support shaft 41 by resistance mechanism 50, the harder it would be
for the user to turn the handle bars 40, and vice-versa.
Accordingly, the handle bar assembly 20 is not free spinning,
thereby improving the exercise benefit in addition to allowing
rotation of the handle bars 40 about the support shaft 41 in a
controlled manner. Any suitable type of resistance device or
mechanism may be used, including without limitation a frictional
resistance mechanism, a magnetic resistance mechanism, a hydraulic
fluid resistance mechanism, or a hydraulic or pneumatic cylinder
resistance system.
[0046] In one embodiment, the frictional based resistance system
may comprise a brake system such as a disc or drum brake mechanism.
These type mechanisms are used in various types of bikes such as
exercise and mountain bicycles, and other applications, and are
well known in the art without undue elaboration.
[0047] One example of a frictional resistance mechanism 50 is shown
in FIGS. 7-9. In this non-limiting embodiment, the resistance
mechanism 50 may be a commercially-available disc brake unit 72
generally comprising an assembly of a rotor 53 fixedly but
preferably not permanently attached to the main rotational support
shaft 41 to rotate therewith and brake pad assembly. Rotor 53 is
centered between a pair of disc brake pads 52a, 52b each supported
by an adjustable caliper 51 in a well known manner. The spaced
apart brake pads 52a, 52b are laterally and axially movable
(parallel to the rotational axis RA of support shaft 41) toward or
away from the rotor 53 to compress the rotor therebetween with
varying degrees. This creates frictional resistance that impedes
rotation of the main rotational support shaft 41 by the user when
turning the handle bar assembly 20.
[0048] The rotor 53 may be fixedly attached to the support shaft 41
by numerous methods; one non-limiting example of which is shown and
described herein. The rotor mount may include a bolted flange 70
permanently mounted on rotational support shaft 41 such as via
welding. A plurality of fasteners 71 such as bolts or screws pass
through holes in the flange 70 and corresponding holes in the
central hub portion of the rotor disc for securing the rotor 53 to
the flange in fixed manner. This arrangement allows the rotor to be
readily replaced if necessary. Rotor 53 may be a relatively thin
solid circular metal disc (disk), or alternatively may be a
ventilated disc including cutouts such as variously shaped holes
and slots (see, e.g. FIG. 7) to dissipate the heat of friction
generated by the braking force and reduce weight. Ventilated rotors
are commonly used for example in bicycle disc brake systems and
other applications, and are well known in the art. Rotor 53 may be
protected by removable covers 69 mounted to the mounting rack
assemblies 26 (see, e.g. FIGS. 1 and 7).
[0049] A fixed or floating type caliper 51 may be used. In a fixed
type caliper, the caliper remains stationary in axial position
relative to the rotor 53. The brake pads are mounted to a pair of
pistons on the caliper and each move axially inwards to clamp the
rotor from each side.
[0050] Conversely, in the floating type caliper 51 shown and
described herein, inner and outer portions of the segmented caliper
body move relative to each other and the rotor. This type of
caliper is typically less complex and expensive than a fixed type
caliper. In the floating brake caliper 51 disclosed herein, the
outer brake pad 52b is mounted on the outboard brake piston portion
54 of the segmented caliper body and inner brake pad 52a is mounted
on the opposite inboard sliding caliper portion 55 of the body,
respectively. Portions 54 and 55 are axially movable together and
apart with respect to each other and the rotor 53.
[0051] In operation, the piston portion 54 of the caliper body
pushes the outer brake pad 52b inwards when activated by a cam
lever 54 operably coupled thereto until the pad engages the outward
facing lateral braking surface of the rotor 53. The piston portion
54 thus cannot move any farther toward the rotor, which in turn
causes the caliper to then pull the opposing sliding caliper
portion 55 of the caliper body outwards towards the piston portion
until inner brake pad 53 also engages the inward facing lateral
braking surface of the rotor. This squeezes the rotor 53 between
the brake pads, thereby creating frictional and rotational
resistance to turning the handle bar assembly 20. The frictional
braking force or pressure is applied to both sides of the rotor 53
in a direction parallel to the axis or rotation RA of the support
shaft 41 and rotor 53. The distance between the brake pads 52a, 52b
is therefore primarily controlled by the position of piston portion
54 of the caliper body, which in turn activates the opposing
sliding caliper portion 55. Suitable floating caliper mechanical
disc brake units that may be used in the present invention include
MB1 Series units commercially available from Airheart Brake
(Tolomatic Inc. of Hamel, Minn.) or other suppliers.
[0052] With continuing reference to FIGS. 7-9, the disc brake unit
72 may be mounted to and supported by one of the mounting rack
assemblies 26. In one embodiment, the brake mount may include a
first bracket 73 specially configured to engage or mounted the
brake unit such as caliper body 63. Bracket 73 is in turn mounted
to a second bracket 60 attached to the respective mounting rack
assembly 26. The brake unit 72 may supported in a cantilevered
manner as shown for positioning of the caliper 51 in proper
relationship to the rotating rotor 53 and support shaft 41. Any
materials and configurations of brackets may be used. It bears
noting that although the brake unit 72 is shown mounted above the
rotor 53 in the illustrated embodiment, any mounting position may
be used including on the sides or beneath the rotor so long as the
brake pads are engageable with the opposing side surfaces of the
rotor.
[0053] According to one aspect of the invention, the frictional
resistance mechanism 50 is user adjustable to allow the user to
preselect and set a desired rotational resistance for the rotary
exercise system. The disc brake caliper 51 may be operated and
adjusted by a resistance control system, which may be either a
mechanical or hydraulic mechanism; both of which are well known in
the art. A mechanical resistance adjustment mechanism is shown
herein as one non-limiting example. In one embodiment, a mechanical
resistance adjustment mechanism may comprise cam lever 61 which is
pivotably mounted on the caliper body 63. Lever 61 is connected to
one top end of a control linkage such as metal wire control cable
62. The other bottom end of the cable is connected to a manual
control actuator 65 which is coupled to and operable to push and
pull the control cable 62, thereby transmitting a force to and
pivoting the cam lever 61 in a known manner which adjusts the
braking force or resistance. The control actuator 65 may be mounted
to mounting rack assembly 26 by a mounting support 64 of any
suitable configuration, such as a metal bracket.
[0054] Any suitable type of commercially available control actuator
65 may be coupled to the control cable 62, such as a rotary knob,
pivotable lever, or other style user interface. A rotary control
knob form of an actuator 65 is shown in the non-limiting
illustrated example herein. Control cables and control actuators
are commercially available from manufacturer's such as Glendinning
Products, LLC of Conway, S.C. and others. Control actuator 65 has a
plurality of user selectable resistance settings which changes the
rotational resistance applied to the support shaft 41 of the handle
bar assembly by the frictional resistance mechanism. Adjusting the
control actuator to select one of the resistance settings increases
or decreases a physical force required to be exerted manually by
the user on the handle bars in order to rotate the handle bar
assembly 20. Indicia may be included on the control actuator (e.g.
knob or lever) to mark various rotational resistance settings,
thereby providing repeatability of desired resistance settings by
the user.
[0055] To adjust the rotational resistance applied to rotor 53 and
in turn the handle bar assembly 20 by the disc brake system
described above, the user rotates the resistance control knob
(actuator 65) clockwise or counter-clockwise to the desired
setting. The actuator 65 pushes or pulls the control cable 62
depending on the direction that the knob is rotated. The force
transmitted by the cable 62 activates and pivots the cam lever 61
on the brake caliper 51, which either pushes the piston portion 54
towards further engagement with the rotor 53 or withdraws the
piston portion therefrom thereby concomitantly moving the sliding
caliper portion 55 of the caliper towards or away from the rotor,
as described above. For example, when the control knob actuator is
turned clockwise, the knob mechanism may pull the control cable 62
and cam lever 61 downward. An angled surface on the cam lever 61
pushes the brake piston portion 54 inwards towards the rotor 53 as
the lever rotates. This correspondingly pulls the sliding caliper
portion 55 of caliper 51 outwards towards the rotor, thereby
pressing the both brake pads 52a, 52b against the rotor to increase
friction, thus increasing rotational resistance in the system.
Conversely, when the control knob actuator is turned
counter-clockwise, the knob mechanism may push the control cable 62
and cam lever 61 upward instead. When the cam lever 61 pivots in
this opposite direction, the angle on the cam lever allows the
brake piston portion 54 to move outward and separate the brake pads
52a, 52b from the rotor 53 to decrease friction, thus decreasing
rotational resistance in the system. The control actuator 65
therefore effectively changes the rotational resistance on the
rotational support shaft 41 in a manner preselected by the user
before the exercise routine begins.
[0056] In some embodiments, at least a single variable resistance
mechanism such as the disc or drum brakes or other type resistance
device described herein may be provided to apply rotational
resistance to the rotational support shaft 41 of the handle bar
assembly 20. In other embodiments as shown herein, a variable
resistance mechanism may be coupled to each end of the support
shaft 41 to impart a balanced resistance force to each side of the
handle bar assembly 20.
[0057] A method of operation and use of the rotatable handle bar
assembly 20 when the device is used as a pull-up bar will now be
briefly explained. If the power rack 24 or 240 of FIG. 1 or 10 are
used, respectively, the user may first select a desired mounting
height/position of the handle bar assembly 20 on the vertical
support members 22. Assuming the user wishes to perform pull-ups
freely hanging from the handle bars 40 in this non-limiting
example, the user positions the chassis 21 (i.e. mounting rack
assemblies 26 along the vertical support members 22 at a height
preferably so that the user will be freely suspended from the
handle bars 40 when the lower-most handle bar is in a bottom
vertical position as the handle bar assembly rotates. The user
concentrically aligns the mounting holes 29 in each mounting rack
assembly 26 with corresponding mounting holes 30 in the vertical
support members 22, and then inserts a suitable fastener 31
therethrough. A lockable type fastener may be used to prevent
inadvertent pullout of the fastener from the mounting holes. The
rotary exercise system is now readied for use.
[0058] As the user jumps, grasps, and hangs from one of the handle
bars 40 which is not directly underneath the rotational support
shaft 41 (e.g. between the 12 and 6 o'clock positions), the user's
bodyweight creates a downward force from gravity transmitted to the
side support structures 42 to which the handle bars are attached.
This in turn creates a torsional force acting on the rotational
support shaft 41 which rotates with the rotor 53 mounted thereto
about the axis of rotation RA. The torsion force acting around the
axis of rotation RA causes the rotational support shaft 41 to
rotate, thus rotating the handle bar assembly 20 and all of the
handle bar members fixed to it. As the rotor 53 rotates, friction
is created between the rotor and the brake pads 52a, 52b, and the
rotational resistance continues along with the rotation until the
user is no longer in a moment or torsion generating position (e.g.
hanging directly underneath the axis of rotation). As the user
climbs from one handle bar to the next higher one not directly
beneath the support shaft 41, the torsional force will again be
created and the fitness apparatus will continue to rotate as the
user successively climbs from one handle bar to the next.
[0059] In engineering terms, the foregoing torsional force or
torque (T) created by the user on the support shaft 41 (i.e. axis
of rotation RA) is the product of the weight of the user (force F)
and the distance (r) between the support shaft and the user (i.e.
linear distance between the handle bar 40 and support shaft which
is the moment arm). In this case, the moment arm (distance r) is
represented by half the length of the radial arms 46 of the side
support structures 42. Torque is expressed in units of foot-pounds
or Newton-meters.
[0060] It bears noting that the angular speed that the handle bar
assembly 20 will rotate is determined by the difference between the
weight of the user and the frictional resistance preselected and
set by the user for the frictional resistance mechanism 50. This
allows the user to select the "climbing" speed from fast to slow.
If the torsional force created by the user does not exceed the
frictional resistance force selected by the user, the handle bar
assembly 20 will not rotate at all. Accordingly, the frictional
resistance setting used will vary with the weight of the user.
Notably, the user may use the lowest-most handle bar 40 at the 6
o'clock bottom position for performing standing pull-ups. The
torque neutral position will not cause the handle bar assembly 20
to rotated because there is no moment arm created by the force or
weight of the user when hanging from this bottom handle bar.
[0061] It will be appreciated that the user may alternatively mount
the handle bar assembly 40 at other positions on the vertical
support members 22 (e.g. shoulder height, waist height, or below)
to perform various types of exercises with the arms and legs. When
mounted proximate to the exercise floor support surface 25, the
user may lie on his/her back and rotate the device with the legs.
Positions above this low mounting position may be used to perform
various exercises with muscle groups other than the legs. Notably,
the handle bar assembly 20 can advantageously be rotated in
opposite directions with the same resistance force applied by the
variable resistance mechanism 50. This expands the versatility of
the rotary exercise system.
[0062] An example of a commercially available drum brake unit 90
that may be used as the frictional resistance mechanism will now be
described with reference to FIG. 12. Such units, well known in the
art without undue elaboration, generally comprise a flanged hub
(not shown on far side) which is fixedly mounted on the rotational
support shaft 41 of the handle bar assembly 20 and rotates
therewith. An annular brake drum 92 is mounted to the flange hub
such as via fasteners (e.g. bolting or screws) using mating holes
in the hub and drum to rotate the brake drum with the support shaft
41. The brake assembly 93 is positioned inside the drum and
includes arcuately shaped brake shoe and pads 95 coupled to a
piston assembly, which moves the brake pads radially outwards to
engage the interior surfaces of the arcuately shaped sidewall of
the brake drum 92 thereby creating friction. This creates
rotational resistance on the rotations support shaft 41 of the
handle bar assembly. A control or cam lever 94 is internally
coupled to the piston and brake pad assembly which moves the brake
pads to increase or decrease frictional resistance between the drum
and pad. The control actuator 65 and control cable 62 attached to
the cam lever 94 as already described herein may be used to allow
the user to increase or decrease the rotational resistance. Such
commercially available drum brake units suitable for this
application
[0063] FIGS. 13 and 14 are schematic diagrams showing one example
of a non-contact magnetic resistance mechanism 100 that may
alternatively be used in lieu of the friction resistance system are
common in spinning bikes and well known in the art. Instead of
frictional resistance which generates heat and wear, magnetic
rotational resistance is non-contact and generated from electro
magnetic currents that vary in strength based on the proximity of
magnets to the rotor. An adjustment mechanism allows the user to
vary the distance between the magnets and the rotor to vary the
drag placed on the rotor or rotational resistance. Referring to the
foregoing referenced figures, the chassis 21 is similar to the
embodiments already described herein except for omission of the
specific brackets used to mount the disc brake unit. Rotor 53 is
rotationally fixed to the support shaft 41 in the same manner and
centered between a pair of magnets 104 which may be fixedly mounted
on one end of a pivotally movable U-shaped clevis section of a
lever arm 101. The lever arm may be roughly L-shaped and mounted
below the rotor 53 in one embodiment. Other mounting positions may
be used. One magnet 104 is mounted on each branch of the clevis in
opposing relationship. The lever arm 101 may be pivotably mounted
by a pivot 103 to a mounting bracket attached to the mounting rack
assembly 26. In one embodiment, the mounting support 64 used for
the control actuator 65 may be configured and also used for the
mounting bracket of the pivot 103; however, a separate bracket may
also be used and mounted to the mounting rack assembly 26. The
pivot 103 may comprises a pin or fastener (illustrated) which
extends through the body of the lever arm 101. In one, the pivot
103 may be located approximately midway between the opposing ends
of the lever arm 101 as shown. Other locations for the pivot
however may be used.
[0064] The adjustment mechanism for the magnetic actuator 100 may
comprise the same control cable 62 and actuator 65 previously
described herein. The control wire 62 may be attached to the other
end of the lever arm 101 opposite the clevis section with the
magnets 104. Raising and lowering the control cable 62 via rotating
the knob-shaped actuator 65 causes the opposite clevis end of the
lever arm 101 with magnets to pivotably move about pivot 103 either
towards or away from the rotor, thereby concomitantly increasing or
decreasing the rotational resistance force induced by the magnets
on the rotor and handle bar assembly 20respectively. Such magnetic
resistance mechanisms are commercially available.
[0065] Hydraulic fluid resistance systems that may alternatively be
used generally comprise a contained hydraulic fluid in an confined
space in conjunction with a rotating impeller therein that provides
smooth, steady resistance during rotation of the rotational support
shaft 41.
[0066] A hydraulic or pneumatic cylinder containing a compressible
fluid mounted in conjunction with the rotor may also alternatively
be used to create rotational resistance. The cylinder may be
rotatably mounted at one end to the mounting rack assembly 26 and
the cylinder rod projecting from the other end may be mounted to
the rotor 41 and is movable therewith. As the support shaft 41 and
rotor 53 fixedly mounted thereto rotates around the rotational axis
RA, the cylinder rod extends and retracts in a reciprocating motion
in conjunction with rotation of the rotor to which it is mounted.
Whether the cylinder is extending or retracting, the linear force
imparted to the cylinder rod by the compressible fluid within the
cylinder is translated into rotational resistance imparted to the
rotor 53.
[0067] Although handle bars 40 depicted herein have a single fixed
location on each radial arm 46 of the lateral support members 43,
in other embodiments the mounting position of the handle bars on
the handle bar assembly may be adjustable. As shown in FIG. 7
represented by the dashed circles depicting alternate handle bar
mounting positions, each radial arm 46 may have multiple
user-selectable handle bar mounting hole 220 locations 220 in which
the handle bars 40 may be mounted. Using through holes 220 in the
radial arms 46, the handle bars 40 may be tapped on each end with
an axial threaded bore and bolted to the radial arms at a desired
location thereby allowing users to adjust the position of the
handle bars. By adjusting the position of the handle bars 40 inward
or outward on the radial arms 46, the radius of rotation and the
torsional force change accordingly.
[0068] For example, when mounted in holes 220 located closer to the
axis of rotation RA, the distance between handle bars becomes
closer and users have less of a reach to grasp the next bar. This
makes climbing the rotating system less of an effort and
accommodates weaker and/or smaller users. When mounted in holes
located farther from the axis of rotation, the distance between
hand grips becomes larger and users have a greater reach to grasp
the next grip. This makes climbing the rotating system more of an
effort and accommodates stronger and/or larger users.
[0069] It will be appreciated that the handle bar assembly 20 may
be mounted at varying heights along the vertical support members 22
in the manner describe herein. This allows different types of
exercise routines to be performed and can work numerous different
muscle groups. For example, the handle bar assembly may be mounted
near the floor and the user may rotate the handle bars with their
legs while lying on the back. In another example, the handle bar
assembly may be mounted to be reachable at standing height allowing
the handle bars to be grasped and rotated while the user is
standing on the floor. In yet another example, the handle bar
assembly may be mounted above the user's head at a height which
requires the user to jump to grab the handle bars. In this case,
the user will be completely elevated off the floor while
successively gripping one handle bar after another as the handle
bar assembly rotates. Accordingly, the invention is limited by the
height at which the handle bar assembly is used.
[0070] While the foregoing description and drawings represent
preferred or exemplary embodiments of the present invention, it
will be understood that various additions, modifications and
substitutions may be made therein without departing from the spirit
and scope and range of equivalents of the accompanying claims. In
particular, it will be clear to those skilled in the art that the
present invention may be embodied in other forms, structures,
arrangements, proportions, sizes, and with other elements,
materials, and components, without departing from the spirit or
essential characteristics thereof. In addition, numerous variations
in the methods/processes as applicable described herein may be made
without departing from the spirit of the invention. One skilled in
the art will further appreciate that the invention may be used with
many modifications of structure, arrangement, proportions, sizes,
materials, and components and otherwise, used in the practice of
the invention, which are particularly adapted to specific
environments and operative requirements without departing from the
principles of the present invention. The presently disclosed
embodiments are therefore to be considered in all respects as
illustrative and not restrictive, the scope of the invention being
defined by the appended claims and equivalents thereof, and not
limited to the foregoing description or embodiments. Rather, the
appended claims should be construed broadly, to include other
variants and embodiments of the invention, which may be made by
those skilled in the art without departing from the scope and range
of equivalents of the invention.
* * * * *