U.S. patent number 3,713,438 [Application Number 05/140,812] was granted by the patent office on 1973-01-30 for therapeutic exercising apparatus.
Invention is credited to Merle E. Knutsen.
United States Patent |
3,713,438 |
Knutsen |
January 30, 1973 |
THERAPEUTIC EXERCISING APPARATUS
Abstract
An electromechanical device for exercising the lower limbs of a
person from hips to toes. The device is provided with a pair of
pedals for securing each foot from toe to heel, and whereby the
foot stays on a plane which moves constantly parallel to itself
during vertical rotation of the pedal. Each pedal has two
spaced-apart pivot bearing points connected to a set of parallel
arms, respectively. Each arm is mounted to an axle which is
interconnected for rotation to a motor. In addition, each parallel
set of arms is provided with adjusting means for varying
independently each pedal position. A vibrator means is mounted to
the device for added therapeutic muscle and joint treatment, as
well as an overriding clutch and adjustable drag means for tuning
the device in relationship to the muscle development value
according to subsequent physical recovery stages.
Inventors: |
Knutsen; Merle E. (Tacoma,
WA) |
Family
ID: |
22492899 |
Appl.
No.: |
05/140,812 |
Filed: |
May 6, 1971 |
Current U.S.
Class: |
601/35; 482/63;
482/60; 601/70 |
Current CPC
Class: |
A61H
1/0214 (20130101) |
Current International
Class: |
A61H
1/02 (20060101); A61h 001/02 () |
Field of
Search: |
;128/25R,25B,33,45,46 |
References Cited
[Referenced By]
U.S. Patent Documents
Primary Examiner: Trapp; Lawrence W.
Claims
Now, therefore, I claim:
1. A therapeutic exercising apparatus comprising:
a. a base carrying a mechanism;
b. said mechanism including a power source for producing rotary
motion;
c. a left and right pedal with a fixed plane portion mounted to
said mechanism to be driven by rotary motion derived via said
mechanism by said power source;
d. said left and said right pedal, each provided with holding means
for connecting an associated user's feet whereby said fixed plane
portion for each said pedal can be adjusted parallel for a
predetermined vertical rotation radius and both said fixed planes
of said pedals can be moved in a different position ranging between
approximate 0.degree. - 90.degree. angle, and
e. a pair of arm members, for accomplishing said mounting of each
said pedal to said mechanism, positioned parallel to one another
and connected to said mechanism at one end for vertical rotation
and at the other end pivotally connected to said pedal so that
during rotation of each said pedal said fixed plane portion remains
in a constant geometric position by moving parallel to itself
during vertical rotation of said pedal.
2. A therapeutic exercising apparatus comprising:
a. a base;
b. a power source for producing rotational movement carried by said
base;
c. a substantially vertically extending frame mounted to said
base;
d. a first axle substantially horizontally disposed and mounted to
said frame for rotation;
e. a second axle disposed in spaced relationship parallel to said
first axle and adjustably mounted to said frame for rotation; and
wherein said second axle adjustable mounting comprises a manual
mode variety setting means for moving said second axle in another
parallel position in reference to said first axle so that both said
pedal means fixed plane position turns equally in another fixed
plane for providing said associated user optional use of said
apparatus between inclined and sitting positions;
f. transmission means connecting said first axle and said second
axle to said power source;
g. a first and a second right arm member mounted parallel to one
another and substantially perpendicular onto said first and said
second axle right end respectively;
h. a first and a second left arm member mounted parallel to one
another and substantially perpendicular onto said first and said
second axle left end respectively;
i. a right and left pedal means with a fixed plane provided with a
rear and a forward pivot means and said rear and said forward pivot
means mounted to said first and said second arm members
respectively so that upon activation of said power source a
rotational movement is carried via said transmission means to said
first and second axle and whereby said axle rotation will rotate
via said arm members, said right and said left pedal means in
vertical rotation whereby each said fixed plane of said pedal means
moves parallel to itself during said vertical rotation of said
pedal means; and
j. holding means connected to said pedal means and adapted to strap
an associated user's feet to said pedal means for assuring movement
of said associated user's feet and limbs in coordinated movement
about said vertical rotation.
3. A therapeutic exercising apparatus as claimed in claim 2 wherein
said power source for producing rotational movement comprises an
electrical motor having transmission gear means for driving said
first axle.
4. A therapeutic exercising apparatus as claimed in claim 3 wherein
said transmission gear means is provided with at least one first
sprocket gear for driving via said transmission means said first
and said second axle.
5. A therapeutic exercising apparatus as claimed in claim 4 wherein
said first axle is provided with a set of thereon-mounted twin
sprocket gears and wherein said second axle is provided with a
thereon-mounted second sprocket gear and wherein said transmission
means comprises an interconnecting flexible chain with links
complementing said sprocket gears so that said motor upon rotation
drives said gears via said interconnecting chain.
6. A therapeutic exercising apparatus as claimed in claim 5 wherein
said first and second right and first and second arm members are
provided with identically spaced adjustable mounting means along
said arms length so that each said pedal means can be mounted at a
predetermined parallel position on each said left and on each said
right side of said apparatus.
7. A therapeutic exercising apparatus as claimed in claim 6 wherein
said rear and said front pivot means connecting said pedal means to
said respective arms utilizes insulating material for electrically
insulating said pedal means from said arms.
8. A therapeutic exercising apparatus as claimed in claim 7 wherein
said apparatus includes
a. a clutch means and
b. a manual drag means,
both connected to said first and second axle and transmission means
for controlling said vertical rotation movement and wherein said
apparatus is provided with a vibrator means for adding vibration to
said rotary motion.
Description
BACKGROUND OF THE INVENTION
1. Field of the Invention
This invention relates to an electromechanical exercising apparatus
for individuals afflicted with paralysis, muscular atrophy or
weakness of the lower limbs.
In particular, the apparatus applies movement to the hip, knee and
ankle joints as an aid to circulation and muscle flexation.
2. Description of the Prior Art
Exercising devices which impart a motor driven bicycle rotary type
leg movement to an individual are known in the art. For instance:
U.S. Pat. No. 2,202,187 by J. J. Chalette and U.S. Pat. No.
2,419,998 by W. J. S. Johnson disclose motor driven exercisers for
knee, ankle and hip movement. In addition, there are various
exercising devices for similar use that are non-powered but can be
operated in a sitting as well as in a lying position, such as the
device described and illustrated in U.S. Pat. No. 2,673,088 by J.
L. Wentz. However, the above-mentioned patented exercising devices
do not control the rotation of the leg, the knee and ankle movement
in a precisely coordinated circular movement. In other words, the
present invention has a feature that keeps the feet on an
unchanging moving plane during vertical rotation. As a result, it
was therapeutically proven that this precisely controlled rotation
of the lower limbs while maintaining the feet in a constant plane
produces a different muscle and joint exercise that relaxes and
strengthens the muscles. Rapid improvement of muscle tone and
flexibility was a noticeable fact. Existing devices presently found
on the market or known to the state of the art do not produce the
same effect of relaxation and improvement, nor do these devices
offer the adjustment for users with various abnormal muscle and
joint conditions. Therefore, it was concluded that the present
device offers a unique and novel arrangement with improved
results.
SUMMARY OF THE INVENTION
The present invented therapeutic exercising apparatus for
strengthening the lower limb joints and muscles of individuals
comprises an electromechanical device with vertical rotational
pedals. The device incorporates a controllable speed and a
controllable drag adjustment. The vertical pedal radius rotation
for each leg can be varied. Furthermore, the pedal rotation of the
device can be tuned to a force, ranging between the variable speed
motor driven force and the user's leg producing force. In order to
increase the muscle and joint strength of improved individual, the
motor can be switched off and the drag means applied. In addition,
the device can be rotated about a horizontal axis so that the
inclined angle of the pedals becomes adjustable over a 90.degree.
range, making the device adaptable to chair or bed use. The various
electrical and mechanical controls are in immediate reach of the
user so that constant supervisory control to the user may be
eliminated. For added therapeutic improvement applicable to some
cases of muscle and joint weakness, a vibrator means is
incorporated.
In general, the present invention comprises an apparatus having a
base and a substantially vertically extending frame mounted on the
base. A power source for producing rotational movement is carried
by the base. A first and a second axle are horizontally disposed in
spaced relationship parallel to one another and each mounted to the
frame for rotation. A transmission means interconnects the power
source with the axles. Each axle carries at right and left, an arm
member that is mounted perpendicularly onto each axle's end, and
the arms at the right are parallel with one another, and the arms
at the left are parallel with one another. A right and a left foot
pedal means with a fixed plane, provided with a forward and a rear
pivot means, are rotationally connected to each arm at the right
and the same at the left respectively, so that upon operation of
the power source a rotational movement is carried via the
transmission means and the axles to the arms at the right and the
left, and thus the right and left pedals move in a vertical
rotation whereby each of the fixed planes of the pedals move
parallel to itself during the vertical rotation of each respective
pedal.
In addition, each pedal is provided with toe and heel strap means
so that an associated user has his feet strapped onto and adjacent
to said fixed plane of each pedal and thus rotation of each plane
parallel to itself will force the feet to follow, thereby inducing
muscle and joint movements in feet, ankle, leg, knee and hip in
controlled coordination.
Therefore, it is an object of this invention to provide for an
improved therapeutic exercising apparatus adapted for exercising
hip, leg, ankle and foot muscles and joints in a controlled
displacement operation for predetermined periods of time.
It is a further object of this invention to provide for an improved
therapeutic exercising apparatus whereby each foot is caused to
vertically rotate along a predetermined radius and whereby each
foot from heel to toe is maintained along a constant plane moving
parallel to itself during this rotation.
It is another object of this invention to provide for a therapeutic
exercising apparatus having means to adapt to a person in a sitting
or lying position, and additional means for independently
regulating the rotation radius of each foot, as well as regulating
the plane position of both feet.
It is an additional and important object of this invention to
provide for a motor-driven exercising apparatus for developing
strength in weakened muscles and whereby the apparatus has tuning
means for adjustment to muscle development value during the
individual physical recovery stages.
Besides the objects mentioned above, this invention provides many
other objects, advantages and features which will become fully
apparent from the following detailed description taken in
conjunction with the accompanying drawings which illustrate and
clarify the preferred embodiment of the invention.
THE DRAWINGS
FIG. 1 is a perspective view of the therapeutic exercising
apparatus with a cut-out portion revealing the internal electrical
and mechanical cooperating components.
FIG. 2 is a vertical sectional view of the apparatus shown in FIG.
1.
FIG. 3 is a perspective view of the apparatus and a person
operating the apparatus in a sitting position.
FIG. 4 is a perspective view of the apparatus with a person in a
reclining position.
DESCRIPTION OF THE INVENTION
In the following description, like reference characters are used in
order to designate like parts throughout the various views.
Referring to FIGS. 1 and 2, there is illustrated a preferred
embodiment of a therapeutic exercising apparatus 10 which is
mounted on a base 12 having horizontally extending pair of legs 14
and 16. In order to keep the apparatus 10 in an upright position, a
wider leg support is provided by the extended feature of the legs
14 and 16. Inside of the housing 18 of the apparatus 10, mounted on
the base 12, is a power source or motor 20 which is connected to
drive, via a gear-transmission 22 and a clutch means 24, a first
sprocket gear 26.
The gear 26 is connected by a transmission means, such as a chain
28, to a twin sprocket gear 30 or, in other words, two gears next
to one another.
The base 12 supports the housing 18 and frame means 32. The housing
18 protects the various moving parts or components from the
exterior and also carries control means 34 while the frame 32
supports various parts of the mechanism and provides mounting
points for the housing 18.
The twin gear 30 is mounted to a first axle 40 which is preferably
supported by the frame 32. A second axle 42 is mounted parallel and
in spaced relationship to the first axle 40 and carries a second
sprocket gear 44. Each axle 40 and 42 protrudes through the housing
18 at the right and the left side. A first right arm member 50 and
left arm member 52 is mounted perpendicular at the respective right
and left protruded end portion of the first axle 42 and also a
second right arm member 54 and left arm member 56 is mounted
perpendicular at the respective right and left protruded end
portion of the second axle 44.
The arms 50 and 54 at the right side of the body 18 are disposed
parallel to each other, as are the arms 52 and 56 at the left side
of the housing 18.
A flat right and left pedal 60 and 62 are provided with pivot means
64 and 66 disposed at the rear and forward of each pedal. These
pivot means 64 and 66 are mounted by fastening means to the arms 50
and 54 at the right, and the arms 52 and 56 at the left.
To protect the user from static electricity or other electrical
discharges, an insulating material such as nylon or the like is
utilized in the pivot means so that the arm members are
electrically insulated from the pedals.
In order to keep the illustrations understandable and in a clear
and uncluttered arrangement, the FIGS. 1 and 2 do not show the
mandatory heel straps 70 and toe straps 72 that are mounted to the
pedals 60 and 62; however the FIGS. 3 and 4 show the straps 70 and
72 tied to the user's feet 74.
The control means 34 includes an on/off switch 80, a speed control
knob 82, a vibrator on/off switch 84 and a drag adjuster means 86,
all of which are within easy reach of the user 74. The vibrator 78
is an optional component to the apparatus 10 and is mounted to the
base 12. In order to prevent accidents, such as tipping over of the
apparatus 10, for instance, when used on a soft bed, a pair of
level sensing mercury switches 88 have been installed which are
electrically connected between the power input and the motor 20. In
addition, the therapeutic exercising apparatus has a manual mode
variety setting means 90 which turns or rotates the whole mechanism
from approximately 0.degree. to 90.degree. so that the inclined
angle of the pedals and its rotation are adaptable to a person's
position between sitting and lying down.
Also, the preferred embodiment carries an overriding clutch 92
which will enhance the use of the apparatus 10 to an improving
person 74. One of the special features incorporated in the
apparatus 10 is the adjustability by the mounting means of the
pedals 60 - 62 on the respective left and right arms 50-54 and
52-56. Thus each limb may be rotated about a different radius.
As a result, the apparatus 10 offers through the components 34, 78,
90, 92 and 94 a multiplicity of applications to users in various
conditions. Although only the preferred embodiment of the invention
has been illustrated and described in the foregoing specification,
it is to be especially understood that various changes, such as in
the relative dimensions of the parts, materials used, and
rearrangement of the components in the assembly, may be made.
However, such changes or arrangements should be understood to fall
within the spirit and scope of this invention as claimed
hereinafter.
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