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Exercising device for rocking the foot to exercise the lower leg

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Publication number
US3472508A
US3472508A US3472508DA US3472508A US 3472508 A US3472508 A US 3472508A US 3472508D A US3472508D A US 3472508DA US 3472508 A US3472508 A US 3472508A
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Prior art keywords
foot
device
surface
muscles
heel
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Richard E Baker
Elizabeth F Baker
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Richard E Baker
Elizabeth F Baker
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    • AHUMAN NECESSITIES
    • A63SPORTS; GAMES; AMUSEMENTS
    • A63BAPPARATUS FOR PHYSICAL TRAINING, GYMNASTICS, SWIMMING, CLIMBING, OR FENCING; BALL GAMES; TRAINING EQUIPMENT
    • A63B21/00Exercising apparatus for developing or strengthening the muscles or joints of the body by working against a counterforce, with or without measuring devices
    • A63B21/0004Exercising devices moving as a whole during exercise
    • AHUMAN NECESSITIES
    • A63SPORTS; GAMES; AMUSEMENTS
    • A63BAPPARATUS FOR PHYSICAL TRAINING, GYMNASTICS, SWIMMING, CLIMBING, OR FENCING; BALL GAMES; TRAINING EQUIPMENT
    • A63B23/00Exercising apparatus specially adapted for particular parts of the body
    • A63B23/035Exercising apparatus specially adapted for particular parts of the body for limbs, i.e. upper or lower limbs, e.g. simultaneously
    • A63B23/04Exercising apparatus specially adapted for particular parts of the body for limbs, i.e. upper or lower limbs, e.g. simultaneously for lower limbs
    • A63B23/08Exercising apparatus specially adapted for particular parts of the body for limbs, i.e. upper or lower limbs, e.g. simultaneously for lower limbs for ankle joints
    • A63B23/085Exercising apparatus specially adapted for particular parts of the body for limbs, i.e. upper or lower limbs, e.g. simultaneously for lower limbs for ankle joints by rotational movement of the joint in a plane substantially parallel to the body-symmetrical-plane
    • AHUMAN NECESSITIES
    • A63SPORTS; GAMES; AMUSEMENTS
    • A63BAPPARATUS FOR PHYSICAL TRAINING, GYMNASTICS, SWIMMING, CLIMBING, OR FENCING; BALL GAMES; TRAINING EQUIPMENT
    • A63B25/00Stilts or the like
    • A63B25/06Shoes formed with stilts to elongate the step
    • AHUMAN NECESSITIES
    • A63SPORTS; GAMES; AMUSEMENTS
    • A63BAPPARATUS FOR PHYSICAL TRAINING, GYMNASTICS, SWIMMING, CLIMBING, OR FENCING; BALL GAMES; TRAINING EQUIPMENT
    • A63B23/00Exercising apparatus specially adapted for particular parts of the body
    • A63B2023/006Exercising apparatus specially adapted for particular parts of the body for stretching exercises

Description

Oct. 14, 1969 BAKER ET AL EXERCISING DEVICE FOR ROCKING THE FOOT TO EXERCISE THE LOWER LEG Filed Nov. 16, 1967 INVENTORS RICHARD E. BAKER ELIZABETH E BAKER BY 9 M, M; g

ATTORNEYS United States Patent 3,472,508 EXERCISING DEVICE FOR ROCKING THE FOOT T0 EXERCISE THE LOWER LEG Richard E. Baker and Elizabeth F. Baker, both of 1427 N. Nash, Apt. 24, Arlington, Va. 22209 Filed Nov. 16, 1967, Ser. No. 683,573 Int. Cl. A63b 23/04; A43b 5/00 US. Cl. 272-57 7 Claims ABSTRACT OF THE DISCLOSURE BACKGROUND OF THE INVENTION This invention relates to exercising devices and more particularly to a novel device than can be used to exercise the muscles of the foot and lower leg including the calf.

It is often desired to exercise the muscles of the lower leg to the exclusion of all other muscles in the body. This is particularly true when the muscles have atrophied as a result of disease, sustained inactivity or inadequate activity. Devices for exercising the calf muscles and the muscles of the lower leg shown in the prior art are relatively complex comprising many parts that are specially joined together with ball and socket joints, electric heaters and other complex mechanisms making them generally quite expensive and yet not wholly effective at best.

The invention disclosed herein provides an apparatus for exercising the muscles of the foot and lower leg and particularly the calf by inducing the exerciser to shift from a position where the calf muscles are stretched or tensioned to where they are released. Initially, the device positions the ball of the foot higher than the heel so that, in an upright standing position, the muscles in the back of the lower portion of the leg are stretched. When the device is rocked forwardly, the heel is raised above the level of the ball of the foot and the muscles are contracted. This alternate extension and contraction of these muscles results in improved muscle tone and muscle size. In addition, by the use of this device the strength of the ankles is increased and the foot muscles are flexed and strengthened.

SUMMARY OF THE INVENTION Generally, the invention comprises a foot exerciser with a bottom surface adapted to rest on a supporting floor and an upper surface including a forward convex portion for engaging the ball of the foot followed by a concave portion, lower than the convex portion, for engaging the heel of the foot. The device also includes a front wall interconnecting the upper and bottom surfaces that is rounded at its juncture with the bottom surface so that the device can be readily rocked about the rounded juncture to raise the heel above the toe. Adjustable straps are provided to engage over the forward portion of the foot 'ice and around behind the heel of the foot to insure that the device is securely mounted on the foot.

It is a primary object of this invention to provide a device for exercising the muscles of the lower leg in building up the size and strength of the calf.

It is still a further object of this invention to provide an exercising device that is securely strapped on the foot for ease of use in performing the desired exercises.

It is a further object of this invention. to provide an exercising device that causes the ball of the foot to be disposed above the heel in the initial upstanding position and then is capable of being rocked so that the heel is then above the ball so that the muscles of the leg are initially stretched and then contracted or released.

Further objects and advantages of the invention will become apparent upon a detailed description thereof with reference to the accompanying drawing wherein:

BRIEF DESCRIPTION OF THE DRAWINGS FIGURE 1 is a perspective view of the device of the subject invention.

FIGURE 2 is a side view of the device shown in FIG- URE 1 illustrating an exercisers foot strapped therein.

FIGURE 3 is a side view of the device shown in FIG- URE 1 showing the device rocked by the exerciser into an intermediate position in carrying out the desired exercises.

DESCRIPTION OF A PREFERRED EMBODIMENT In FIGURE 1 the exercising device shown generally at 10 comprises a generally triangular shaped block 14 which can be made of wood, plastic, metal or any other con venient material. Associated with the block are straps 18 and 22 for respectively holding the ball of the foot and the heel in engagement with the upper surface of the block. The straps 18 and 22 can be provided with buckles or any suitable fastening means to render them adjustable to accommodate different foot sizes of individual exercisers.

In FIGURE 2, it is seen that the block 14 has a relatively flat bottom and a sloped upper surface 30. The relatively flat bottom can be defined by at least three spaced points in non-linear relation for stably supporting the bottom on a flat surface. A front wall .34 connects the upper surface to the bottom 26 of the device while a relatively short rear wall 38 connects the aforementioned surfaces at the back of the device.

Upper surface 30' is provided with a convex portion 42 adjacent the front wall 34 to support the ball of the foot and the toes. This convex portion merges rearwardly into a concave portion 4-5 at the rear of block 14 which supports the heel of the foot. The portion of surface 30 intermediate convex surface 42 and concave surface 46 is relatively flat at 52 so that upper surface .30 comprises a smooth continuous generally S curve for the support of the foot. This curve is formed to accommodate the ball of the foot and the toe at one end and the heel at the other end. It is to be noted that the ball of the foot is substantially higher than the heel in the upstanding position of the exerciser shown in FIGURE 2 so that when the device is worn the muscles in the back of the leg are stretched substantially.

The juncture of the bottom surface 26 and the front wall 34 is rounded as shown at 56 so that the device may be easily rocked therea'bout in performing the exercises.

In order to assure that the block 14 will not slip on the floor, a strip of non-slip material 60 such as rubber or the like is employed to cover front wall 34, the rounded juncture 56 between the bottom and the front wall, and the bottom 26 of the device, or said surfaces have a nonslip property derived from the material of which block 14 is made. In another form, this non-slip property could be obtained by scoring or knurling wall 34, juncture 56 and bottom 26 so that they present a relatively roughened surface adapted to frictionally engage the floor.

An opening 64 extending through the block 14, generally disposed beneath the convex portion 42, receives straps 18 and 22. If desired, the straps can be provided with cushions such as that shown at 68 on strap 22 so that they will not bind the foot while the device is being used. It should be understood that Opening 64 and straps 18 and 22 are merely a preferred form of securing the foot to the exercising device. A retaining plate 66 can be fixed to either side of block 14 in clamping engagement with strap 18 to restrain against the tendency of the toe of the foot to slip laterally off the top surface of the block. It should be apparent to those skilled in the art that other means could be provided for securing the foot to the device such as laces or straps fastened to various portions along the block 14 or a shoe-like form connected to top surface 30, and that the surfaces of the front, rear, and side walls can be sculptured in a variety of forms extending into the subsurface for structural and aesthetic variations.

If the users toes cannot properly grip the convex surface 42, the foot will tend to slide about the big toe so that the heel tends to slip laterally oif the block. This tendency to slide can be overcome by suitable means disposed on the sides of the block. An example of such a means is elongated pin 69 fixed to the side of block 14 adjacent to concave surface 46 by a retaining plate 70'. The pin 69 is of suificient height to allow strap 22 to pass outside of it and thus to modify its direction of pull and to thereby prevent the heel of the user from sliding laterally off surface 46. If desired, another retaining plate can be provided opposite the first retaining plate 66 and another pin can be provided opposite the first pin.

In exercising in the preferred manner two of the devices are used with one block strapped to each foot. Both feet are initially disposed as shown in FIGURE 2 wherein the straps 18 and 22 are adjusted to hold the foot in proper position on the block and in firm engagement with top surface 30. The straps can be fastened after the foot is placed on the block or the block can be slipped onto the foot after a prior adjustment of the straps. While the straps should be secure, they should not subject the foot to uncomfortable pressure. The ball of the foot is disposed well above the heel so that the muscles in the back of the leg are stretched. The device is operated by rocking forwardly on rounded surface 56 until the desired contraction of the back muscles is achieved. In FIGURE 3, the device is shown rocked to an intermediate position wherein the heel has risen to substantially the same horizontal plane as the toe and the muscles in the back of the leg are disposed in the position that they would be in a normal standing position. Of course, if desired or if needed for therapeutic or general muscle building reasons, the device could be rotated forwardly about rounded section 56 until the front wall portion 34 were to approach a position of resting on the ground.

With the two pin and two plate construction, a single exerciser can be used to exercise either foot by selectively wrapping the strap 22 outside one pin 69 and inside the other. For example, when exercising the right foot, the strap is outside the right pin and inside the left pin, and when exercising the left foot, the strap is outside the left pin and inside the right pin. In such exercising, the single device is afiixed to the particular foot and calf to be strengthened. Then in use, the person rests the other foot on top of the foot wearing the device while the device is rocked back and forth in performing the exercising. In this manner, the foot wearing the device carries the en- 4 tire weight of the user; thus, that foot gets maximum benefit from the exercise. Of course, using either one or two of the exercising devices can be aided, if desired, by supporting the body upright by grasping an adjacent table, wall or other support.

The device may conveniently be made in a variety of different maximum toe heights. Then a beginner might start with a device having a relatively low toe height for the device and work up to models of the device providing a greater toe height as the exercisers proficiency and muscle development permitted the greater muscle flexing. Normally the length of even the different toe height models would be maintained the same within a foot size group and different foot lengths of the users would simply be accommodated by taking up or letting out on the straps for fastening the foot to the device. However, to accommodate unusually long or short foot lengths, special devices of comparable length would be required.

Even using a high toe height model of the device, greater muscle tension or elongation can be obtained by leaning forward to a wall or table while still pressing the heels on the devices down to the floor following each forward rock on the devices.

By use of the device of this invention basically, a buildup in the strength and size of the calves results. However, there is some therapeutic benefit through use of this device. Used by women, it is advantageous in relieving strain created by wearing, walking and standing in high heels for extended periods of time. Further, use of the device of this invention offers some strengthening of the instep of the foot and strengthens the foot in general. Such use would also generally have the effect of thinning down the ankle.

By utilizing an exercising device such as that described regularly every day for a short while and merely rocking back and forth about the rounded juncture 56 the muscles in the lower leg, particularly the calf, as well as the foot muscles will be subjected to regular alternate extension and contraction, promoting an increase in the blood supply thereto and resulting in increased muscle size and muscle tone.

While the invention has been described with particular reference to building up the muscles of the foot, lower leg and calf, it is to be understood that various changes and modifications may be made in the preferred embodiment thereof by those skilled in the art to accomplish muscle buildup without departing from the concept of the invention as disclosed herein.

What is claimed is:

1. A foot and calf exerciser comprising:

a member including a bottom surface defined by at least three spaced points in non-linear relation, for stably resting on a flat support and an upper surface means for supporting a foot so that the ball thereof is higher than the heel thereof when said bottom surface is resting on the support;

a front wall joining said bottom surface and said upper surface; the juncture of said front wall and said bottom surface being rounded so said member can be rocked thereabout; and

means on said member for securing the foot of the user of the exerciser in engagement with said upper surface means as said member is rocked.

2. An exerciser as defined in claim 1 wherein said upper surface means includes a convex surface portion for sup porting the ball of the foot, a concave surface portion for engaging the heel of the foot and a relatively flat inclined portion interconnecting said convex and concave portions.

3. An exerciser as defined in claim 2 wherein said securing means includes first strap means for holding the ball of the foot in engagement with said convex surface portion and second strap means for holding the heel of the foot in engagement with said concave surface portion.

4. An exerciser as defined in claim 3 wherein the connection between said first and second strap means and said member is disposed below said convex surface portion.

5. An exerciser as defined in claim 1 wherein frictional means is provided on said bottom surface, said juncture and said wall to facilitate the rocking of said member about said juncture.

6. An exerciser as defined in claim 5 wherein said frictional means includes a non-slip material mounted on said bottom surface, said juncture and said Wall.

7. An exerciser as defined in claim 3 wherein said securing means further includes at least one retaining means adapted to cooperate with at least one of said straps to limit lateral sliding movement of the foot on said upper surface.

6 References Cited UNITED STATES PATENTS ANTON O. OECHSLE, Primary Examiner RICHARD W. DIAZ, JR., Assistant Examiner US. Cl. X.R.

US3472508A 1967-11-16 1967-11-16 Exercising device for rocking the foot to exercise the lower leg Expired - Lifetime US3472508A (en)

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Cited By (47)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3739501A (en) * 1972-06-23 1973-06-19 J Barrett Footwear article and method for facilitating walking
US3859727A (en) * 1971-08-10 1975-01-14 Hideru Nakamoto Footwear containing foot massage means
US4526365A (en) * 1983-03-18 1985-07-02 Zelik Ziegelbaum Exercising device suitable for physical therapy and the like
US4589216A (en) * 1983-05-18 1986-05-20 Roy Fuscone Sole element
US4821431A (en) * 1988-05-10 1989-04-18 Rieffel Donald W Sandal with contained granular material to provide a pad for a person's foot
US4914837A (en) * 1989-01-03 1990-04-10 Rieffel Donald W Sandal with contained granular material to provide a pad for a person's foot
US4934073A (en) * 1989-07-13 1990-06-19 Robinson Fred M Exercise-enhancing walking shoe
US4951938A (en) * 1989-03-15 1990-08-28 Pro Stretch, Inc. Exercise shoe
US5197932A (en) * 1991-06-27 1993-03-30 Prostretch, Inc. Ganged exercise shoes
US5222925A (en) * 1992-09-18 1993-06-29 Maycock Sidney M Device and method for wrist exercise
US5395294A (en) * 1994-01-18 1995-03-07 Tunturi, Inc. Foot pad for stair climber exerciser
US5529550A (en) * 1995-02-17 1996-06-25 Gripstrength Inc Device for forearm, elbow, wrist, hand, finger and thumb exercise
WO1997010795A1 (en) * 1995-09-18 1997-03-27 Active Motion Systems, Llc Toe joint mobilization apparatus
FR2740947A1 (en) * 1995-11-15 1997-05-16 Yeo Young Hoon Shoe with an inner bottom surface sloping
US5692318A (en) * 1989-11-28 1997-12-02 Aliano, Jr.; Joseph F. Golf shoe sole
US5707322A (en) * 1994-02-28 1998-01-13 Concept Ii, Inc. Exercise machine
US5713820A (en) * 1995-10-11 1998-02-03 Carbone; Giuseppe Equipment for carrying out anterior and posterior foot and lower limbs flexion exercises
US5743831A (en) * 1996-07-15 1998-04-28 Jakich; Alek Apparatus and method for exercising the leg
US6042520A (en) * 1997-03-13 2000-03-28 Cantero; David Campos Device for stretching and increasing the flexibility of the foot
US6131315A (en) * 1995-01-30 2000-10-17 Nancy C. Frye Footwear exercising device
US6231485B1 (en) * 1994-02-28 2001-05-15 Concept Ii, Inc. Exercise machine
GB2367763A (en) * 2000-10-10 2002-04-17 Alan Raymond Tree Ankle exercising and assessment device
WO2002030228A2 (en) 2000-10-13 2002-04-18 Frye Nancy C Improved shoe and last
US6421935B1 (en) 1999-12-15 2002-07-23 Michael D. Bartlett Rocking shoe
US6425843B1 (en) 1998-04-08 2002-07-30 Leesa Storfer Apparatus for stretching the calf muscles
WO2002068068A1 (en) * 2001-02-27 2002-09-06 John Peter Morris Exerciser
US6561955B1 (en) 1999-06-10 2003-05-13 Concept Ii, Inc. Machine-assisted exercising
US6698050B1 (en) 1995-01-30 2004-03-02 Nancy C. Frye Shoe and last
WO2004105546A2 (en) * 2003-06-02 2004-12-09 Springboost S.A. Improved dorsiflexion shoe
US20050164845A1 (en) * 2004-01-13 2005-07-28 Medi-Dyne Healthcare Products, Ltd. Rocker boot with adjustable degree of rotation
WO2006102730A1 (en) * 2005-03-31 2006-10-05 9114 1135 Quebec Inc. Calf exerciser
US20070072749A1 (en) * 2005-09-29 2007-03-29 Lay Kenneth G Heel cradle exercise device and footrest
US7278227B2 (en) 2003-08-04 2007-10-09 Eshrat Masoodifar Conditioning shoe and method of use
US20080016723A1 (en) * 2006-07-21 2008-01-24 Time Sport International Sports shoe, in particular a cycling shoe, and tightening strap for such a shoe
US20100242310A1 (en) * 2009-03-31 2010-09-30 Prasad Gourineni Achilles and foot arch stretching devices and methods performed therewith
US20100261582A1 (en) * 2009-04-10 2010-10-14 Little Anthony A Exercise device and method of use
US20110003667A1 (en) * 2009-07-06 2011-01-06 Gianandrea Pinamonte Strengthening device for leg muscles
US20110082015A1 (en) * 2009-10-02 2011-04-07 Concept Ii, Inc. Exercising
US20110124473A1 (en) * 2009-11-17 2011-05-26 Ryan Michael Kole Lower leg and foot exercise device
US20110224049A1 (en) * 2008-10-10 2011-09-15 Gerrard Farrell Foot exercise device
CN102488358A (en) * 2011-12-20 2012-06-13 天津市麦麦鞋业有限公司 Negative heel sole
US8529411B2 (en) 2008-08-06 2013-09-10 Medi-Dyne Healthcare Products, Ltd. Foot and ankle exercise device
US8814768B1 (en) * 2013-06-28 2014-08-26 Seong Sam Yang Stability exercise device
US20140336012A1 (en) * 2009-03-31 2014-11-13 Prasad Gourineni Achilles stretching devices and methods performed therewith
US20150223561A1 (en) * 2014-02-07 2015-08-13 Nike, Inc. Sole structure for an article of footwear with extended plate
US9295876B2 (en) 2013-04-18 2016-03-29 Ashok K. Singh Foot exercise device
USD807611S1 (en) 2013-11-25 2018-01-16 Improvedance Foot sleeve for stretch device

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1497243A (en) * 1922-08-29 1924-06-10 John L Martin Foot exerciser
US2214052A (en) * 1938-07-13 1940-09-10 Harry L Good Exercising boot
US3361427A (en) * 1966-08-29 1968-01-02 Jewish Home For The Aged Exercise rocker

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1497243A (en) * 1922-08-29 1924-06-10 John L Martin Foot exerciser
US2214052A (en) * 1938-07-13 1940-09-10 Harry L Good Exercising boot
US3361427A (en) * 1966-08-29 1968-01-02 Jewish Home For The Aged Exercise rocker

Cited By (63)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3859727A (en) * 1971-08-10 1975-01-14 Hideru Nakamoto Footwear containing foot massage means
US3739501A (en) * 1972-06-23 1973-06-19 J Barrett Footwear article and method for facilitating walking
US4526365A (en) * 1983-03-18 1985-07-02 Zelik Ziegelbaum Exercising device suitable for physical therapy and the like
US4589216A (en) * 1983-05-18 1986-05-20 Roy Fuscone Sole element
US4821431A (en) * 1988-05-10 1989-04-18 Rieffel Donald W Sandal with contained granular material to provide a pad for a person's foot
US4914837A (en) * 1989-01-03 1990-04-10 Rieffel Donald W Sandal with contained granular material to provide a pad for a person's foot
US4951938A (en) * 1989-03-15 1990-08-28 Pro Stretch, Inc. Exercise shoe
US4934073A (en) * 1989-07-13 1990-06-19 Robinson Fred M Exercise-enhancing walking shoe
US5692318A (en) * 1989-11-28 1997-12-02 Aliano, Jr.; Joseph F. Golf shoe sole
US5197932A (en) * 1991-06-27 1993-03-30 Prostretch, Inc. Ganged exercise shoes
US5222925A (en) * 1992-09-18 1993-06-29 Maycock Sidney M Device and method for wrist exercise
US5702354A (en) * 1993-12-02 1997-12-30 Active Motion Systems, Llc Toe joint mobilization apparatus
US5395294A (en) * 1994-01-18 1995-03-07 Tunturi, Inc. Foot pad for stair climber exerciser
US6231485B1 (en) * 1994-02-28 2001-05-15 Concept Ii, Inc. Exercise machine
US6371892B1 (en) * 1994-02-28 2002-04-16 Concept Ii, Inc. Exercise machine
US5707322A (en) * 1994-02-28 1998-01-13 Concept Ii, Inc. Exercise machine
US8601722B2 (en) 1995-01-30 2013-12-10 Nancy C. Frye Shoe and last
US6131315A (en) * 1995-01-30 2000-10-17 Nancy C. Frye Footwear exercising device
US20040168351A1 (en) * 1995-01-30 2004-09-02 Frye Nancy C. Shoe and last
US6698050B1 (en) 1995-01-30 2004-03-02 Nancy C. Frye Shoe and last
US5529550A (en) * 1995-02-17 1996-06-25 Gripstrength Inc Device for forearm, elbow, wrist, hand, finger and thumb exercise
WO1997010795A1 (en) * 1995-09-18 1997-03-27 Active Motion Systems, Llc Toe joint mobilization apparatus
US5713820A (en) * 1995-10-11 1998-02-03 Carbone; Giuseppe Equipment for carrying out anterior and posterior foot and lower limbs flexion exercises
FR2740947A1 (en) * 1995-11-15 1997-05-16 Yeo Young Hoon Shoe with an inner bottom surface sloping
US5743831A (en) * 1996-07-15 1998-04-28 Jakich; Alek Apparatus and method for exercising the leg
US6042520A (en) * 1997-03-13 2000-03-28 Cantero; David Campos Device for stretching and increasing the flexibility of the foot
US6425843B1 (en) 1998-04-08 2002-07-30 Leesa Storfer Apparatus for stretching the calf muscles
US7201708B2 (en) 1999-06-10 2007-04-10 Concept Ii, Inc. Machine-assisted exercising
US6561955B1 (en) 1999-06-10 2003-05-13 Concept Ii, Inc. Machine-assisted exercising
US6421935B1 (en) 1999-12-15 2002-07-23 Michael D. Bartlett Rocking shoe
GB2367763A (en) * 2000-10-10 2002-04-17 Alan Raymond Tree Ankle exercising and assessment device
WO2002030228A2 (en) 2000-10-13 2002-04-18 Frye Nancy C Improved shoe and last
WO2002068068A1 (en) * 2001-02-27 2002-09-06 John Peter Morris Exerciser
WO2004105546A3 (en) * 2003-06-02 2005-03-31 Bayat Behrouz Improved dorsiflexion shoe
CN100479687C (en) 2003-06-02 2009-04-22 斯普林博斯特有限公司 Improved dorsiflexion shoe
US20060254093A1 (en) * 2003-06-02 2006-11-16 Springboost S.A. Dorsiflexion shoe
WO2004105546A2 (en) * 2003-06-02 2004-12-09 Springboost S.A. Improved dorsiflexion shoe
US7278227B2 (en) 2003-08-04 2007-10-09 Eshrat Masoodifar Conditioning shoe and method of use
US20050164845A1 (en) * 2004-01-13 2005-07-28 Medi-Dyne Healthcare Products, Ltd. Rocker boot with adjustable degree of rotation
US20110152047A1 (en) * 2005-03-31 2011-06-23 9114 1135 Quebec Inc. Calf Exerciser
WO2006102730A1 (en) * 2005-03-31 2006-10-05 9114 1135 Quebec Inc. Calf exerciser
US20070072749A1 (en) * 2005-09-29 2007-03-29 Lay Kenneth G Heel cradle exercise device and footrest
US20080016723A1 (en) * 2006-07-21 2008-01-24 Time Sport International Sports shoe, in particular a cycling shoe, and tightening strap for such a shoe
US7856740B2 (en) * 2006-07-21 2010-12-28 Time Sport International Sports shoe and tightening strap for such a shoe
US8529411B2 (en) 2008-08-06 2013-09-10 Medi-Dyne Healthcare Products, Ltd. Foot and ankle exercise device
US9282786B2 (en) 2008-10-10 2016-03-15 Gerrard Farrell Foot exercise device
US20110224049A1 (en) * 2008-10-10 2011-09-15 Gerrard Farrell Foot exercise device
US20100242310A1 (en) * 2009-03-31 2010-09-30 Prasad Gourineni Achilles and foot arch stretching devices and methods performed therewith
US9682003B2 (en) * 2009-03-31 2017-06-20 Prasad Gourineni Achilles stretching devices and methods performed therewith
US20140336012A1 (en) * 2009-03-31 2014-11-13 Prasad Gourineni Achilles stretching devices and methods performed therewith
US20100261582A1 (en) * 2009-04-10 2010-10-14 Little Anthony A Exercise device and method of use
US8262542B2 (en) 2009-07-06 2012-09-11 Gianandrea Pinamonte Strengthening device for leg muscles
US20110003667A1 (en) * 2009-07-06 2011-01-06 Gianandrea Pinamonte Strengthening device for leg muscles
US20110082015A1 (en) * 2009-10-02 2011-04-07 Concept Ii, Inc. Exercising
US8360940B2 (en) 2009-11-17 2013-01-29 Rk Inventions, Llc Lower leg and foot exercise device
US20110124473A1 (en) * 2009-11-17 2011-05-26 Ryan Michael Kole Lower leg and foot exercise device
US9132308B2 (en) 2009-11-17 2015-09-15 Rk Inventions, Llc Lower leg and foot exercise device
CN102488358A (en) * 2011-12-20 2012-06-13 天津市麦麦鞋业有限公司 Negative heel sole
US9295876B2 (en) 2013-04-18 2016-03-29 Ashok K. Singh Foot exercise device
US8814768B1 (en) * 2013-06-28 2014-08-26 Seong Sam Yang Stability exercise device
USD807611S1 (en) 2013-11-25 2018-01-16 Improvedance Foot sleeve for stretch device
US9532623B2 (en) * 2014-02-07 2017-01-03 Nike, Inc. Sole structure for an article of footwear with extended plate
US20150223561A1 (en) * 2014-02-07 2015-08-13 Nike, Inc. Sole structure for an article of footwear with extended plate

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