U.S. patent number 3,739,500 [Application Number 05/217,340] was granted by the patent office on 1973-06-19 for exercise shoe.
Invention is credited to Paul L. Cox.
United States Patent |
3,739,500 |
Cox |
June 19, 1973 |
EXERCISE SHOE
Abstract
A flexible pillar sole member is provided for attachment to the
front portion of a shoe thereby causing the wearer to stand, walk
and run without touching his heels to the ground. The resultant
shoe provides for dynamic exercise.
Inventors: |
Cox; Paul L. (Jackson, MS) |
Family
ID: |
22810650 |
Appl.
No.: |
05/217,340 |
Filed: |
January 12, 1972 |
Current U.S.
Class: |
36/99; 36/7.8;
482/51; 36/114 |
Current CPC
Class: |
A43B
5/00 (20130101); A43B 13/146 (20130101); A43B
13/143 (20130101) |
Current International
Class: |
A43B
13/14 (20060101); A43B 5/00 (20060101); A43b
003/10 () |
Field of
Search: |
;272/70,70.1,70.2
;36/2.5R,2.5A,2.5AC,2.5AE,2.5AF,7.2,7.8 |
References Cited
[Referenced By]
U.S. Patent Documents
Primary Examiner: Lawson; Patrick D.
Claims
What is claimed is:
1. An exercise shoe having a shoe vamp and a pillar sole
member,
said pillar sole member having a top, an intermediate portion and a
bottom sole, said top being connected to said vamp in the area
extending from the ball of the foot area forwardly to the toe area,
said bottom sole extending laterally beyond the outer side of the
vamp, said intermediate portion having at least one concave portion
to facilitate distortion, said pillar sole member being of a height
and compliance which makes difficult the touching of the heel area
of the vamp to the supporting surface engaged by the bottom
sole.
2. An exercise shoe having an elevating extension secured to the
bottom of the sole thereof at the area adjacent the ball of the
human foot, and a ground contacting sole carried by the end of the
elevating extension remote from the shoe sole, said ground
contacting sole extending laterally beyond the shoe sole at the
outside of the shoe.
3. The shoe set forth in claim 6 wherein said ground contacting
sole is flexible.
4. The shoe set out in claim 2 wherein said ground contacting sole
extends laterally beyond the shoe sole at the inside of the
shoe.
5. The shoe set out in claim 2 wherein said ground contacting sole
has dimensions and distortability coordinated with the user's size
and weight.
6. An exercise shoe having a shoe vamp and a pillar sole
member;
said pillar sole member having a top, an intermediate portion and a
bottom sole, said top being connected to said vamp in the area
extending from the ball of the foot to the toe area, said
intermediate portion sloping rearwardly and downwardly from the
front connection at said toe area to facilitate distortion, said
bottom sole only underlying the vamp from substantially the toe
area to the area of the ball of the foot, said pillar sole member
being of a height and compliance which makes difficult the touching
of the heel area of the shoe to the supporting surface engaged by
the bottom sole.
7. The shoe set forth in claim 6 wherein said bottom sole has
dimensions and distortability coordinated with the user's size and
weight.
8. The shoe set forth in claim 7 wherein the height of the
intermediate portion is in the neighborhood of 2 to 3 inches.
9. The shoe set forth in claim 6 wherein said bottom sole extends
laterally beyond the vamp at the outer side of the shoe.
10. The shoe set forth in claim 9 wherein said bottom sole extends
laterally beyond the vamp at the inner side of the shoe.
Description
BACKGROUND OF THE INVENTION
Exercises for strengthening and developing leg muscles in athletes
are known. Among the most common of these is the so-called "toe
raise." In this exercise, the athlete stands with arms outstretched
forwardly, and in timed, rhythmic meter, alternately rises up on
the balls and toes of his feet and returns to the normal standing
position with the heels in contact with the ground. While this
exercise is effective to some degree in developing and
strengthening leg muscles, it is done in a more or less static
environment, that is, under conditions which do not involve or even
simulate running, jumping and the like.
SUMMARY OF THE INVENTION
The pillar sole member enables the development of muscle strength,
muscle coordination and endurance. An athlete thereby is better
conditioned with improved agility and speed. The danger of injury
is reduced by the better conditioning.
The front pillar shoe primarily develops the extensor muscles of
the lower extremities; the extensors of the foot; the
gastrocnemius, soleus; the extensors of the leg, quadriceps and the
extensors of the thigh, and gluteal muscles. With reciprocal action
there is also development of the flexors. By measurement of the
circumference of the thigh and calf of the leg, it can be shown
that muscle mass will increase with conditioning. Many injured
athletes have seen the muscle waste away from atrophy of disuse.
Conversely, muscle mass can be increased through exercises.
Since the front pillar shoe is flexible and distortable, twisting
movements are possible, thereby developing the invertors and
evertors of the foot and the internal and external rotators of the
leg. This is of great importance in the prevention of injury to the
ankle and knee. There is no wrapping or protective device that will
equal the protection given by strong musculature. The therapeutic
value is believed to be significant. Trainers and physicians can
use the shoes for rehabilitation and treatment. Football players
can use the shoes under simulated conditions. The running of pass
patterns, the cutting movements of the backs, as well as tackling
and blocking movements are possible with the shoes.
Other objects and advantages of the invention will be apparent to
those skilled in the art from the detailed description herein.
DESCRIPTION OF THE DRAWINGS
FIG. 1 is a side elevation of a left shoe embodying the invention
wherein the shoe elevating extension is somewhat rectangular in
horizontal cross-section;
FIG. 2 is a bottom view of the shoe of FIG. 1;
FIG. 3 is a partial front elevation of the shoe similar to FIG. 1
but wherein the shoe elevating extension is somewhat elliptical in
horizontal cross-section;
FIG. 4 is a side elevation of the shoe of FIG. 1 as it contacts the
ground when the wearer is running;
FIG. 5 is a side view of a right shoe showing the curving of the
bottom sole which results from use;
FIG. 6 is front view of a pair of shoes;
FIG. 7 shows the condition of the pillar sole members in a sprinter
start position;
FIG. 8 shows the toe action during running;
FIG. 9 shows the right shoe of a wearer making a sharp cut to the
left;
FIG. 10 is the same as FIG. 9 but taken from the inside showing
that an inversion of the ankle is less likely than with regular
shoes;
FIG. 11 shows a slow right turn with right foot turning and left
foot pushing;
FIG. 12 is the same as FIG. 11 viewed from a different angle;
and
FIG. 13 shows an exercise with weight on heel stretching calf and
thigh muscles.
DESCRIPTION OF THE INVENTION
Referring to FIG. 1, a shoe vamp is indicated at 11 and includes
the conventional toe portion 12, heel portion 13, bottom 14 and
counter 15. The shoe vamp may be of any conventional type including
both high top or oxford type. Attached to the vamp bottom 14
beneath the portion thereof which is engaged by the ball of the
foot is a pillar sole member in the form of an elevating extension
16. The elevating extension 16 may be of various shapes, such as
hyperboloid, connected truncated cones or pyramids or define
parabolic or elliptical horizontal cross sections. In horizontal
cross-section the extension 16 may thus be circular, square,
rectangular, elliptical or ovoid or variations and combinations
thereof, including flattened shapes. The bottom of the extension 16
is secured to or provided with a ground contacting sole 17. The
sole 17, which may be removable and replaceable and may be provided
with cleats (not shown) which may be required for such sports as
football and the like.
As shown best in FIGS. 2 and 3, the ground contacting sole 17
preferably extends laterally beyond the bottom 14 of the shoe at
the outside of the shoe, the extension indicated at 18. The inside
of the ground contacting sole 17 also preferably extends inwardly
beyond the ball of the foot portion at the rear thereof as shown in
FIG. 2. The ground contacting sole 17 is preferably somewhat
flexible in order to provide the feel of the ground when turning
while running. The sole 17 can be made of leather, synthetic
leather, or the like.
The elevating extension 16 is preferably distortably and axially
compressible to a limited extent. FIG. 4 illustrates the distortion
and compression thereof while the wearer is running, for example,
the ground being indicated at 19. The extension 16 is suitably made
from foamed materials such as polyvinyl chloride, polyurethane,
etc.
The exercise shoe may be manufactured as a unitary item or the
extension with its ground contacting sole may be separately
manufactured and suitably attached to conventional athletic
shoes.
The dimensions of the pillar sole member vary in accordance with
the shoe size, weight of the wearer and the distortability of the
material employed therein. For men of average height and weight,
for example, the elevating extension 16 may have an axial height in
the neighborhood of 2 to 3 inches. The extension 16 may be custom
designed for any given athelete, embodying the optimum dimensions,
distortability, and the like.
The forward part of the extension 16 preferably begins
approximately beneath or slightly behind the first joint of the
wearer's big toe, thus concentrating the wearer's weight on the
balls of the feet. The rearward part of the extension 16 preferably
terminates beneath or slightly behind the rear of the ball of the
foot. The extension, being distortable and compressible acts in the
nature of an auxiliary ankle, tending to move the center of gravity
of the wearer's body forwardly. Accordingly the wearer must exert a
counteracting force with the muscles extending from the ankles to
the buttocks in order to stand, walk or run, thereby strengthening
these leg muscles.
FIGS. 5 to 13 show the condition of the shoe during use. The
concept involves the elevation and support of the ball of the foot
to cause exercise of the leg muscles. In use the sole adapts itself
to the wearer and becomes slightly curved as shown.
The compliance of the extension member is a function of the
material used for the structure thereof. A spring system, a
utilization of materials of different compliances, and fluid
systems can be utilized. The undercutting of the extension member
enables active use of the shoes as shown in the FIGS. 5-13.
* * * * *