US3784192A - Wheel supported exercising device - Google Patents

Wheel supported exercising device Download PDF

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US3784192A
US3784192A US00301598A US3784192DA US3784192A US 3784192 A US3784192 A US 3784192A US 00301598 A US00301598 A US 00301598A US 3784192D A US3784192D A US 3784192DA US 3784192 A US3784192 A US 3784192A
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wheels
receiver
retainer
frame
supporting
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US00301598A
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D Nutter
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    • A—HUMAN NECESSITIES
    • A63—SPORTS; GAMES; AMUSEMENTS
    • A63B—APPARATUS FOR PHYSICAL TRAINING, GYMNASTICS, SWIMMING, CLIMBING, OR FENCING; BALL GAMES; TRAINING EQUIPMENT
    • A63B22/00—Exercising apparatus specially adapted for conditioning the cardio-vascular system, for training agility or co-ordination of movements
    • A63B22/20—Exercising apparatus specially adapted for conditioning the cardio-vascular system, for training agility or co-ordination of movements using rollers, wheels, castors or the like, e.g. gliding means, to be moved over the floor or other surface, e.g. guide tracks, during exercising
    • A—HUMAN NECESSITIES
    • A63—SPORTS; GAMES; AMUSEMENTS
    • A63B—APPARATUS FOR PHYSICAL TRAINING, GYMNASTICS, SWIMMING, CLIMBING, OR FENCING; BALL GAMES; TRAINING EQUIPMENT
    • A63B2208/00—Characteristics or parameters related to the user or player
    • A63B2208/12—Characteristics or parameters related to the user or player specially adapted for children

Definitions

  • the device is struc [51] Int. Cl A63b 23/04 tured to move across a flat surface on wheels.
  • the wheels are preferably caster wheels to pro- [56] References Cited vide for movement in any direction.
  • the device UNITED STATES PATENTS is a means for body-building, exercise, or play.
  • This invention relates to an exercising device, normally used in conjunction with the ankle, instep and foot of a human being.
  • the device normally supports the lower part of the shin, ankle, and foot when the body is in a prone position with the back straight and the remaining body weight supported on the hands.
  • By walking with the hands or scissoring the legs vigorous exercise is provided for the arms, shoulders, abdomen, back and legs.
  • hand-held wheel devices which, however, support the forward portion of the body, and with which the motion of the arms is limited.
  • the hand-held wheels In use, the hand-held wheels normally are moved back and forth parallel to the body line, and the feet are stationary.
  • the device of the invention is comprised of four elements acting in combination to provide a novel apparatus for exercise or play.
  • the elements are a receiver, a retainer which cooperates with the receiver, a frame capable of supporting the receiver and retainer, and two or more wheels beneath the frame.
  • the receiver has at least one saddle-shaped arcuate member with two parallel upwardly and outwardly extending lips.
  • the retainer is generally horizontal, intersects the lips of the arcuate member, and is attached to the lips.
  • the arcuate portions of the receiver are shaped to conform to the front of the ankle, the instep and the foot.
  • the device is meant to support a portion of the users body weight.
  • the device can be used in the following manner: a person places his feet into the receiver-retainer opening while his body and legs are held straight and almost parallel to the ground. The remaining body weight is supported on the hands, much as in the push-up exercise position.
  • the wheels allow the device (and hence the feet) to move freely along the floor as the user walks with his hands.
  • the hands can be kept in place and the legs scissored to open and close them.
  • the heels of the user are placed on the retainer, as he supports his upper body with his hands, in a supine position. For exercise in this position the knees can be flexed, or the legs scissored.
  • the value of the device is apparent as an aid to exercise and muscle development. Also, if several persons are equipped with the devices, races between them can provide competitive games, as in school physical education classes.
  • FIG. 1 is a perspective view of a person employing two devices embodying the invention.
  • FIG. 2 is a front elevation of the device.
  • FIG. 3 is a side elevation of the same device shown in FIG. 2.
  • FIG. 4 is a perspective view of the same device shown in FIGS. 2 and 3.
  • FIG. 5 is a perspective view of another embodiment of the invention.
  • the device of the invention can be so shaped as to accommodate both feet, the preferred device will accept only one foot, and is thus preferably used in pairs, one for each foot.
  • the receiver portion is preferably curved so as to conform, at least partially, to a persons ankle, instep, and foot.
  • a single standard configuration of the receiver would be usable by all; if desired, the receiver can be sized so that, for example, a smaller model would be available for children.
  • the receiver could be adjustable, as by bending, to conform more exactly to an individuals ankle and instep.
  • the materials of construction of the device are not critical, and wood, metal, plastics and the like can be used, so long as the device is sufficiently strong to support the load placed upon it. Padding can be employed in the receiver portion, if desired, for greater comfort.
  • the retainer portion can be a rigid member, such as a bar, or it can be a flexible strap. Its primary function is to keep the foot in place so that it does not slide downward or backward.
  • the retainer can be a separate piece, secured to the receiver in any convenient way, or it can be integral with the receiver. If the retainer is a strap it can be adjustable in length so as to provide further flexibility as to size.
  • the frame portion serves to unite the receiver and retainer portions with the wheels, and to distribute the load placed on the receiver to the wheels. Its upper shape will be dictated primarily by the shape of the receiver, and its lower shape by the spacing of the wheels.
  • At least two wheels are required in the device, to assure comfort and control. It has been found preferable that three wheels should be provided, for best operation, and they are most preferably located at the apices of an equilaterial triangle. Maximum comfort and stability are attained by positioning one wheel beneath the retainer (at the toe portion of the receiver), and the other two symmetrically on either side of the center line, beneath the ankle portion of the receiver.
  • the wheels can be of any convenient size and type; however, caster wheels are preferred for ease of mobility in all directions. If the device is to be used, for example, on a gymnasium floor, a mar-proof substance, such as nylon, for example, should be used for the wheels, or the portion thereof which is in contact with the floor. Caster wheels which are swiveled on ball bearings are recommended for optimum flexibility of movement; however, any type of structure which allows 360 movement with minimum friction can be used, such as freely rotating spheres set in sockets, for example.
  • FIG. 1 shows a man wearing one of the devices on each foot.
  • the devices support a portion of his body weight, and his remaining weight is supported on his hands. In this position, the legs can be moved open and closed while the hands are kept stationary. Alternatively, by walking with his hands, he can propel his body across a surface.
  • the device is shown in front elevation.
  • the forward portion 10 of the receiver is shaped and positioned to hold the ankle.
  • the frame 11 supports the receiver, and wheels 12 support the frame.
  • FIG. 3 is a side elevation of the same device. ln this view, the concave surface of the receiver is hidden by the frame 11.
  • the wheels 12 are again shown supporting the frame 11, with two forward wheels at left, and one centered wheel supporting the rear portion at right.
  • FIG. 4 is a perspective view of the same device, with the receiver indicated generally at 15 and the retainer 16 attached thereto.
  • the two forward wheels 16, 17 and the rear wheel 18 are supporting the frame 11.
  • FIG. 5 shows a variation of the device, in which two receiver means 20, 21 are used, with retainers 22, 23 attached to each.
  • the forward wheels 24, 25 and rear wheel 26 are attached to the bottom of the frame 21, in a similar manner.
  • An exercising device comprising, in combination,
  • receiver means capable of supporting a load placed thereon comprising at least one saddle-shaped arcuate member shaped to conform to the frontal ankle, instep, and foot of a human being, said arcuate member having two parallel upwardly and outwardly extending lips,
  • retainer means comprising an elongated member disposed generally horizontally intersecting and attached at each of its ends to the lips of each of said arcuate members at a zone intermediate the ends of said arcuate members,
  • wheel means located beneath the frame means supporting the frame means and comprising a plurality of wheels.

Abstract

The device supports the user''s feet and ankles when the user is in the prone position. The device is structured to move across a flat surface on wheels. The upper portion is shaped to receive the ankle, instep and foot of the user, with a retainer to hold the foot in place. The wheels are preferably caster wheels to provide for movement in any direction. In use, the device is a means for body-building, exercise, or play.

Description

1 rte States Patent 1 1 1 1 3,784,192
Nutter Jan. 8, 1974 [54] WHEEL SUPPORTED EXERCISING DEVICE 1,916,660 7/1933 Duff 272/79 R [75] inventor: Dona J. Nutter Norton, Ohio 863,122 8/1907 Weber 272/57 R [73] Assignee: Gordon D. Seward, Akron, Ohio; primary Emmine, AmOn O. Oechsle a part interest Assistant Examiner-R. T. Stouffer [22] Filed: Oct 27 1972 Att0rney-Gord0n B. Seward [2i] Appl. No.: 301,598 [57] ABSTRACT The device supports the users feet and ankles when [52] US. Cl. 272/57 J the user is in the prone position- The device is struc [51] Int. Cl A63b 23/04 tured to move across a flat surface on wheels. The [58] Field of Search 272/57 R, 57 D, 57 J, h d h k] 2.72/79 R 80 upper portion 15 s ape to receive t e an e, mstep and foot of the user, with a retainer to hold the foot in place. The wheels are preferably caster wheels to pro- [56] References Cited vide for movement in any direction. In use, the device UNITED STATES PATENTS is a means for body-building, exercise, or play. 2,069,384 2/1937 Ogden 272/57 D 2,645,482 7/1953 Magida mm D 9 la ms 5 Draww u i vxe, 1,997,139 4/1935 Gardener et a1... 2721571 I WHEEL SUPPORTED EXERCISING DEVICE BACKGROUND OF THE INVENTION This invention relates to an exercising device, normally used in conjunction with the ankle, instep and foot of a human being. In use, the device normally supports the lower part of the shin, ankle, and foot when the body is in a prone position with the back straight and the remaining body weight supported on the hands. By walking with the hands or scissoring the legs, vigorous exercise is provided for the arms, shoulders, abdomen, back and legs.
Somewhat related are the hand-held wheel devices, which, however, support the forward portion of the body, and with which the motion of the arms is limited. In use, the hand-held wheels normally are moved back and forth parallel to the body line, and the feet are stationary.
SUMMARY OF THE INVENTION Briefly described, the device of the invention is comprised of four elements acting in combination to provide a novel apparatus for exercise or play. The elements are a receiver, a retainer which cooperates with the receiver, a frame capable of supporting the receiver and retainer, and two or more wheels beneath the frame.
The receiver has at least one saddle-shaped arcuate member with two parallel upwardly and outwardly extending lips. The retainer is generally horizontal, intersects the lips of the arcuate member, and is attached to the lips.
In its preferred form, the arcuate portions of the receiver are shaped to conform to the front of the ankle, the instep and the foot. The device is meant to support a portion of the users body weight.
The device can be used in the following manner: a person places his feet into the receiver-retainer opening while his body and legs are held straight and almost parallel to the ground. The remaining body weight is supported on the hands, much as in the push-up exercise position. The wheels allow the device (and hence the feet) to move freely along the floor as the user walks with his hands. Alternatively, the hands can be kept in place and the legs scissored to open and close them. As a further optional use, the heels of the user are placed on the retainer, as he supports his upper body with his hands, in a supine position. For exercise in this position the knees can be flexed, or the legs scissored.
The value of the device is apparent as an aid to exercise and muscle development. Also, if several persons are equipped with the devices, races between them can provide competitive games, as in school physical education classes.
BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a perspective view of a person employing two devices embodying the invention.
FIG. 2 is a front elevation of the device.
FIG. 3 is a side elevation of the same device shown in FIG. 2.
FIG. 4 is a perspective view of the same device shown in FIGS. 2 and 3.
FIG. 5 is a perspective view of another embodiment of the invention.
DESCRIPTION OF THE PREFERRED EMBODIMENTS While the device of the invention can be so shaped as to accommodate both feet, the preferred device will accept only one foot, and is thus preferably used in pairs, one for each foot.
The receiver portion is preferably curved so as to conform, at least partially, to a persons ankle, instep, and foot. Although it is possible that a single standard configuration of the receiver would be usable by all; if desired, the receiver can be sized so that, for example, a smaller model would be available for children. Alternatively, the receiver could be adjustable, as by bending, to conform more exactly to an individuals ankle and instep.
The materials of construction of the device are not critical, and wood, metal, plastics and the like can be used, so long as the device is sufficiently strong to support the load placed upon it. Padding can be employed in the receiver portion, if desired, for greater comfort.
The retainer portion can be a rigid member, such as a bar, or it can be a flexible strap. Its primary function is to keep the foot in place so that it does not slide downward or backward. The retainer can be a separate piece, secured to the receiver in any convenient way, or it can be integral with the receiver. If the retainer is a strap it can be adjustable in length so as to provide further flexibility as to size.
The frame portion serves to unite the receiver and retainer portions with the wheels, and to distribute the load placed on the receiver to the wheels. Its upper shape will be dictated primarily by the shape of the receiver, and its lower shape by the spacing of the wheels.
At least two wheels are required in the device, to assure comfort and control. It has been found preferable that three wheels should be provided, for best operation, and they are most preferably located at the apices of an equilaterial triangle. Maximum comfort and stability are attained by positioning one wheel beneath the retainer (at the toe portion of the receiver), and the other two symmetrically on either side of the center line, beneath the ankle portion of the receiver.
The wheels can be of any convenient size and type; however, caster wheels are preferred for ease of mobility in all directions. If the device is to be used, for example, on a gymnasium floor, a mar-proof substance, such as nylon, for example, should be used for the wheels, or the portion thereof which is in contact with the floor. Caster wheels which are swiveled on ball bearings are recommended for optimum flexibility of movement; however, any type of structure which allows 360 movement with minimum friction can be used, such as freely rotating spheres set in sockets, for example.
A better understanding of the device can be obtained by reference to the accompanying drawings, which depict a preferred embodiment of the device.
FIG. 1 shows a man wearing one of the devices on each foot. The devices support a portion of his body weight, and his remaining weight is supported on his hands. In this position, the legs can be moved open and closed while the hands are kept stationary. Alternatively, by walking with his hands, he can propel his body across a surface.
In FIG. 2, the device is shown in front elevation. The forward portion 10 of the receiver is shaped and positioned to hold the ankle. The frame 11 supports the receiver, and wheels 12 support the frame.
FIG. 3 is a side elevation of the same device. ln this view, the concave surface of the receiver is hidden by the frame 11. The wheels 12 are again shown supporting the frame 11, with two forward wheels at left, and one centered wheel supporting the rear portion at right.
FIG. 4 is a perspective view of the same device, with the receiver indicated generally at 15 and the retainer 16 attached thereto. The two forward wheels 16, 17 and the rear wheel 18 are supporting the frame 11.
FIG. 5 shows a variation of the device, in which two receiver means 20, 21 are used, with retainers 22, 23 attached to each. The forward wheels 24, 25 and rear wheel 26 are attached to the bottom of the frame 21, in a similar manner.
The foregoing descriptions and drawing show examples of several modes of the device of the invention and are not meant to be limiting as to the scope of the invention, which is set forth in the following claims.
l claim:
1. An exercising device comprising, in combination,
receiver means capable of supporting a load placed thereon comprising at least one saddle-shaped arcuate member shaped to conform to the frontal ankle, instep, and foot of a human being, said arcuate member having two parallel upwardly and outwardly extending lips,
retainer means comprising an elongated member disposed generally horizontally intersecting and attached at each of its ends to the lips of each of said arcuate members at a zone intermediate the ends of said arcuate members,
frame means located beneath the receiver means capable of supporting the receiver means and a load placed thereon,
and wheel means located beneath the frame means supporting the frame means and comprising a plurality of wheels.
2. The device of claim 1, wherein two parallel, contiguous arcuate members are present.
3. The device of claim 1, wherein the retainer means comprises a flexible strap.
4. The device of claim 1, wherein the wheel means comprises three wheels.
5. The device of claim 4, wherein the three wheels are located at the apices of an equilateral triangle.
6. The device of claim 5, wherein one apex of the triangle is positioned directly beneath the retainer means.
7. The device of claim 1, wherein the wheels are caster wheels.
8. The device of claim 1, wherein the receiver means, retainer means and frame means are all contained in one integral molding.
9. The device of claim 1, wherein the arcuate member is padded.

Claims (9)

1. An exercising device comprising, in combination, receiver means capable of supporting a load placed thereon comprising at least one saddle-shaped arcuate member shaped to conform to the frontal ankle, instep, and foot of a human being, said arcuate member having two parallel upwardly and outwardly extending lips, retainer means comprising an elongated member disposed generally horizontally intersecting and attached at each of its ends to the lips of each of said arcuate members at a zone intermediate the ends of said arcuate members, frame means located beneath the receiver means capable of supporting the receiver means and a load placed thereon, and wheel means located beneath the frame means supporting the frame means and comprising a plurality of wheels.
2. The device of claim 1, wherein two parallel, contiguous arcuate members are present.
3. The device of claim 1, wherein the retainer means comprises a flexible strap.
4. The device of claim 1, wherein the wheel means comprises three wheels.
5. The device of claim 4, wherein the three wheels are located at the apices of an equilateral triangle.
6. The device of claim 5, wherein one apex of the triangle is positioned directly beneath the retainer means.
7. The device of claim 1, wherein the wheels are caster wheels.
8. The device of claim 1, wherein the receiver means, retainer means and frame means are all contained in one integral molding.
9. The device of claim 1, wherein the arcuate member is padded.
US00301598A 1972-10-27 1972-10-27 Wheel supported exercising device Expired - Lifetime US3784192A (en)

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Cited By (25)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4595197A (en) * 1983-12-09 1986-06-17 Hagstrom David R Wheeled exercise device
US4826151A (en) * 1987-12-03 1989-05-02 Yusuf Nuredin Push-up and hand walking exerciser
DE3739117A1 (en) * 1987-11-19 1989-06-01 Perleberg Koelbel Renate Gunhi Apparatus for training the muscles of the body
US6942605B1 (en) * 2003-12-09 2005-09-13 Feliks Sukhovitsky Exercise equipment
US20080051273A1 (en) * 2006-08-28 2008-02-28 Shimon Storch Exercise device
EA010249B1 (en) * 2005-11-30 2008-06-30 Вячеслав Геннадьевич Краснов Sports training device
US7407465B1 (en) 2004-07-26 2008-08-05 Alzamora Sr David Torso exercising apparatus
US20090105050A1 (en) * 2007-10-17 2009-04-23 Mayo Elvin A Exercise Machine for Back Rehabilitation
AU2008201757B1 (en) * 2008-04-21 2009-08-27 Tony Susnjara Exercise Device
US20090298656A1 (en) * 2008-05-30 2009-12-03 Jeff Dannenberg Muscle toner exercise apparatus
US7674213B1 (en) * 2008-04-03 2010-03-09 Christian Christopher L Exercising assist method and apparatus
US20100130337A1 (en) * 2008-11-25 2010-05-27 Jeffrey Stewart Exercise device
US20100148459A1 (en) * 2008-09-27 2010-06-17 Johnston Allen G Hand held skating device
US7753829B1 (en) * 2007-02-23 2010-07-13 Bret Schaller Training device
US7951053B1 (en) 2008-04-03 2011-05-31 Christian Christopher L Exercising assist method and apparatus
US20110166006A1 (en) * 2010-01-05 2011-07-07 Kipland Howard Core strengthening device and method for strengthening using the same
US20120100969A1 (en) * 2010-10-21 2012-04-26 Brodbeck Ralph R Exercise device and method
US20120214652A1 (en) * 2011-02-22 2012-08-23 Rob Williams Mobile exercise device
US9199117B1 (en) * 2011-07-19 2015-12-01 Paul James Nicholas Omnidirectional exercise platform
US9358419B1 (en) 2013-03-15 2016-06-07 Jonathan Smith Physical fitness device
US9545539B1 (en) 2011-07-19 2017-01-17 Paul James Nicholas Omnidirectional exercise platform and method of use
US20170014666A1 (en) * 2015-07-16 2017-01-19 Michael C. Sather Rotational Fitness Apparatus
US11110319B1 (en) * 2019-09-24 2021-09-07 Aaron Boyd Plank exercise assistance apparatus
WO2022006097A1 (en) * 2020-07-02 2022-01-06 Sahm Bazargan Adjustable resistance weight sled with bias correction, wheel skid control, and omni-directional motion
US11911654B1 (en) 2022-03-15 2024-02-27 Shawn Plummer Foot-attached exercise rollers

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US863122A (en) * 1906-05-14 1907-08-13 Herman Weber Truck.
US1916660A (en) * 1932-12-03 1933-07-04 Charles L Duff Exercising machine
US1997139A (en) * 1934-01-30 1935-04-09 Gardener Exercising device
US2069384A (en) * 1936-01-11 1937-02-02 Ogden Henry George Exercising device
US2645482A (en) * 1952-05-19 1953-07-14 Herbert N Magida Foot actuated exercising device

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US863122A (en) * 1906-05-14 1907-08-13 Herman Weber Truck.
US1916660A (en) * 1932-12-03 1933-07-04 Charles L Duff Exercising machine
US1997139A (en) * 1934-01-30 1935-04-09 Gardener Exercising device
US2069384A (en) * 1936-01-11 1937-02-02 Ogden Henry George Exercising device
US2645482A (en) * 1952-05-19 1953-07-14 Herbert N Magida Foot actuated exercising device

Cited By (32)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4595197A (en) * 1983-12-09 1986-06-17 Hagstrom David R Wheeled exercise device
DE3739117A1 (en) * 1987-11-19 1989-06-01 Perleberg Koelbel Renate Gunhi Apparatus for training the muscles of the body
US4826151A (en) * 1987-12-03 1989-05-02 Yusuf Nuredin Push-up and hand walking exerciser
US6942605B1 (en) * 2003-12-09 2005-09-13 Feliks Sukhovitsky Exercise equipment
US7407465B1 (en) 2004-07-26 2008-08-05 Alzamora Sr David Torso exercising apparatus
EA010249B1 (en) * 2005-11-30 2008-06-30 Вячеслав Геннадьевич Краснов Sports training device
US7367928B2 (en) * 2006-08-28 2008-05-06 Shimon Storch Exercise device
US20080051273A1 (en) * 2006-08-28 2008-02-28 Shimon Storch Exercise device
US7753829B1 (en) * 2007-02-23 2010-07-13 Bret Schaller Training device
US20090105050A1 (en) * 2007-10-17 2009-04-23 Mayo Elvin A Exercise Machine for Back Rehabilitation
US7951053B1 (en) 2008-04-03 2011-05-31 Christian Christopher L Exercising assist method and apparatus
US7674213B1 (en) * 2008-04-03 2010-03-09 Christian Christopher L Exercising assist method and apparatus
AU2008201757B1 (en) * 2008-04-21 2009-08-27 Tony Susnjara Exercise Device
WO2009129564A1 (en) * 2008-04-21 2009-10-29 Tony Susnjara Exercise device
US7935039B2 (en) * 2008-05-30 2011-05-03 Jef Dannenberg Muscle toner exercise apparatus
US20090298656A1 (en) * 2008-05-30 2009-12-03 Jeff Dannenberg Muscle toner exercise apparatus
US20100148459A1 (en) * 2008-09-27 2010-06-17 Johnston Allen G Hand held skating device
US20100130337A1 (en) * 2008-11-25 2010-05-27 Jeffrey Stewart Exercise device
US20110166006A1 (en) * 2010-01-05 2011-07-07 Kipland Howard Core strengthening device and method for strengthening using the same
US7981016B1 (en) * 2010-01-05 2011-07-19 Kipland Howard Core strengthening device and method for strengthening using the same
US9180334B2 (en) 2010-10-21 2015-11-10 Ralph R. Brodbeck Exercise device and method
US8814767B2 (en) * 2010-10-21 2014-08-26 Ralph R. Brodbeck Exercise device and method
US20120100969A1 (en) * 2010-10-21 2012-04-26 Brodbeck Ralph R Exercise device and method
US20120214652A1 (en) * 2011-02-22 2012-08-23 Rob Williams Mobile exercise device
US9199117B1 (en) * 2011-07-19 2015-12-01 Paul James Nicholas Omnidirectional exercise platform
US9545539B1 (en) 2011-07-19 2017-01-17 Paul James Nicholas Omnidirectional exercise platform and method of use
US9358419B1 (en) 2013-03-15 2016-06-07 Jonathan Smith Physical fitness device
US20170014666A1 (en) * 2015-07-16 2017-01-19 Michael C. Sather Rotational Fitness Apparatus
US10080920B2 (en) * 2015-07-16 2018-09-25 Michael C. Sather Rotational fitness apparatus
US11110319B1 (en) * 2019-09-24 2021-09-07 Aaron Boyd Plank exercise assistance apparatus
WO2022006097A1 (en) * 2020-07-02 2022-01-06 Sahm Bazargan Adjustable resistance weight sled with bias correction, wheel skid control, and omni-directional motion
US11911654B1 (en) 2022-03-15 2024-02-27 Shawn Plummer Foot-attached exercise rollers

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