|Publication number||US3759511 A|
|Publication date||Sep 18, 1973|
|Filing date||Mar 29, 1971|
|Priority date||Mar 29, 1971|
|Also published as||CA966523A, CA966523A1, DE2215119A1, DE2215119B2, DE2215119C3|
|Publication number||US 3759511 A, US 3759511A, US-A-3759511, US3759511 A, US3759511A|
|Inventors||Wayne Zinkin De, C Coker, K Gustafson|
|Original Assignee||K Gustafson, Wayne Zinkin De, C Coker|
|Export Citation||BiBTeX, EndNote, RefMan|
|Patent Citations (8), Referenced by (139), Classifications (17)|
|External Links: USPTO, USPTO Assignment, Espacenet|
United States Patent 1 Zinkin et al.
[ ADJUSTABLE FRICTION TYPE EXERCISING DEVICE  Inventors: De Wayne Zinkin, 2751 Lerwick Rd, Sacramento; Cliff J. Coker, 16727 Bolera Ln., Huntington Beach; Kenneth A. Gustatson, 9981 Platanel Dr., Villa Park, all of Calif.
 Filed: Mar. 29, 1971  App]. N0.: 128,982
 US. Cl. 272/58, 272/79 R, 272/DIG. 3,
272/73, 272/DIG. 5
 Int. Cl A63b 23/04  Field of Search 272/26, 58, 69, 71,
272/73, 79 R, 80, DIG. 3, DIG. 5, DIG. 4, DIG. 6; 46/1 R; 35/29 B; 128/25 R  References Cited UNITED STATES PATENTS 3,259,385 7/1966 Boren 272/73 1,902,694 ,3/1933 272/58 3,103,357 9/1963 272/58 X 326,247 9/1885 Root 272/71 [1 1 3,759,511 [451 Sept. 18,1973
3,528,653 9/1970 Stuckenschneider 272/79 R 3,074,716 1/1963 Mitchel et a1 272/71 3,216,722 1/l965 Odom 272/73 3,572,699 3/1971 Nies 272/73 Primary Examiner-Richard C. Pinkham Assistant Examiner-William R. Browne Attorney-Huebner & Worrel  ABSTRACT A device for exercising the muscles of the legs, which simulates the striding movement which occurs during actual running. A body support frame is provided having a pair of foot engaging pendulum arms mounted thereon for movement through predetermined arcuate paths of travel with an adjustable friction developing v mechanism being operatively associated with an arcuate sector to offer resistance to movements of the arms. The device offers substantially a constant resistive force throughout the entire range of thrust movement during extension of a users leg and provides substantially unrestricted leg movement in the opposite direction during retraction of a user's leg.
9 Claims, 4 Drawing Figures PATENTED SE?! 8 I975 SHEET 2 BF 2 DE may/v5 Z/NK/A CLIFF J COKER KENNETH A. GUSTAFSON INVENTORY MfM A TTOPNEVS ADJUSTABLE FRICTION TYPE EXERCISING DEVICE BACKGROUND OF THE INVENTION The benefits of participating in a regular exercise program in order to maintain good heath and improve muscle tone are well-known. Jogging is becoming an increasingly popular form of exercise to strengthen the muscles of the body, particularly in the legs. Of course, when jogging, one extends and lifts each of his legs in an alternating fashion. When extending ones legs, there is a distinct tendency to stress a group of muscles frequently referred to as the extensor muscles, while in lifting ones legs, there is a tendency to stress an op posed muscle group, known as the flexor muscles. Included in the extensor muscle group are the muscles identified as gluteus muscles. medium and maximus, sartoris, rectus femoris, vastus intermedius, vastus latralis, gastrocnemius, and soleus, while within the flexor muscle group there is included the tensor fascia lata, biceps femoris, semitendinous, semimembranousus, and tibialis anterior muscles. Thus, that through running or jogging, the extensor and flexor muscles are cyclically stressed in an alternating fashion. Outdoor jogging is not always possible because of adverse weather conditions, limitations on time or lack of sapce in the more crowded urban areas. This is a particularly onerous problem during travel in outer space with the increased duration of such space flights. Furthermore, it is contemplated that the occupants of the proposed space platforms may spend months and even years in an environment where normal exercise such as running is not possible. Under such conditions where running cannot be conveniently accomplished, many people merely run in place indoors which, although better than no exercise at all, does not precisely simulate actual running. The substantially straight, vertical movement of the legs produces a detrimental impact shock upwardly through the legs and throughout the entire body and does not permit any desirable stretching of the leg muscles which normally occurs with the striding movement during actual running. The preferred running exercise, however, can only be accomplished by relatively healthy people and is, of course, impossible for many persons having some type of muscle damage, disease, atrophy, or the like which frequently can be improved by a therapeutically graded exercise program. No exercise device presently available is capable of permitting the user precisely to duplicate the striding movements of natural running or precisely to vary the amount of resistance imposed upon the legs during such movement. Accordingly, none of the prior devices is adapted for universal use over the varied and wide range of exercise programs attainable with the device of the present invention.
Conventional leg exercise devices are generally of two types, the first of which is commonly known as a leg press which employs weights to provide a resistive force during repetitive extensions of the legs. These devices do not even attempt to simulate leg movement during running and, while weights can be added or subtracted, the geometry of the connecting linkage between the user and the weights is usually such that the force imposed upon the user varies somewhat from the,
beginning of the stroke or press to near the end thereof. Furthermore, the weights are gravity-returned which imposes an additional force on the users legs unlike running wherein during upward retraction of the legs there is no force imposed thereon other than their own weight. Because of the weight problem, such devices cannot be used in space travel vehicles and are, of course, completely useless in the non-gravitational environment encountered in space. Other types of leg exercise devices generally include bicycle and treadmills that attempt to simulate normal leg movement during running. Bicycle pedaling, however, only involves a substantially vertical movement of the legs similar to running in place while treadmills afford only a substantially linear shuffling movement and are unable to supply the usual resistance encountered during actual running. Therefore, the various devices heretofore employed in exercising the legs do not cause the extensor and flexor muscle groups to be stressed in a manner which duplicates the stressing of these muscles encountered when running or jogging.
Accordingly, it is the purpose of the instant invention to provide an exercising device which can be employed for stressing the major leg muscle groups in a manner consistent with the manner in which they are stressed when performing an act of running or jogging.
SUMMARY OF THE INVENTION Accordingly, it is an object of the present invention to provide an improved exercise device. 7
Another object is to provide such an improved exercise device which is particularly adapted for use in ex ercising the muscles of the legs.
Another object is to provide an exercise device of the character described which is versatile and readily adapted for virtually all exercise programs involving the legs.
Another object is to provide an improved exercise device which substantially simulates the striding movement occurring during running.
Another object is to provide an improved exercise device which is capable of precisely adjusting the resistance imposed upon the legs of the user during such striding movement without the use of weights.
Another object is to provide an improved exercise device in which the resistance imposed upon the legs of the user is substantially constant throughout the entire range of leg movement.
Another object is to provide an improved exercise device which utilizes a body support frame on which the user can assume a forwardly inclined position to simulate the attitude of the body when running.
Another object is to provide an improved exercise device which may be quickly and conveniently converted to support the body of the user in a seated position.
Another object is to provide an improved exercise device which is safe, convenient in. use, and which may be economically manufactured.
Other objects and advantages of the present inven tion will subsequently become more clearly apparent upon reference to the following description and accompanying drawings.
BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a perspective view of an exercise device embodying the principles of the present invention with the body of a user disposed thereon in a forwardly inclined dashed-line position.
FIG. 2 is a side elevation of the exercise device of FIG. 1 with the user shown in an alternate dashed-line sitting position.
FIG. 3 is a top plan view of the exercise device of the present invention.
FIG. 4 is a transverse vertical section through the exercise device, taken on line 4-4 of FIG. 2.
DESCRIPTION OF THE PREFERRED EMBODIMENT Referring more particularly to the drawings, an exercise device embodying the principles of the present invention provides a body support frame generally indicated by the reference numeral which is adapted to be rested upon any suitable substantially flat support surface such as a floor 1 l in a gymnasium or other exercise room. A user 12 employing the exercise device of the present invention is shown in dashed lines in a forwardly inclined position in FIG. 1 simulating the attitude of the users body when running and in a seated position in FIG. 2. The exercise device is quickly and conveniently converted for use in either position with substantially no modification of the structure.
The body support frame 10 is constructed of a plurality of elongated tubular bars of substantially rigid lightweight metal material such as aluminum or the like although it is apparent that any suitable rigid material of other configurations such as round tubing or the like can be employed. The frame includes a pair of spaced substantially parallel uprights l6 and 17 respectively disposed at a head end 18 and a foot end 20 of the frame. The uprights provide lower ends 22 and 23, respectively, which are individually secured, as by welding or the like, in upstanding relation from a pair of base members 25 which are disposed in spaced substantially parallel relation and have spaced lower pads or glides 26 secured thereto for engagement with the floor 11. The upright 16 at the head end 18 of the frame 10 has an upper end 28 cut at an angle of approximately 30 from the horizontal. The upright 17 at the foot end 20 of the frame has an upper end 30 which is displaced toward the upright 16 from the main body portion of the upright by an upper bent section 32 which is disposed at an angle of approximately 45 from the horizontal. The uprights are rigidly interconnected by an elongated tie bar 35 which is secured at its ends to the uprights as by welding, bolting or the like in a substantially horizontal position in closely spaced adjacent relation to the base members 25.
A bicycle-type handlebar assembly is disposed at the head end 18 of the body support frame 10 and includes a pair of spaced upturned handle grips 42 which are connected through a continuous bar 43 having a bight portion 44. A mounting flange 46 is secured to the bight portion 44 of the bar and is rigidly secured to the upright 16 substantially intermediate its ends-by a pair of mounting bolts 47 or the like.
An elongated substantially flat rectangular plate 50 is secured to the upper end 28 of the upright 16, as by welding, on which is disposed an elongated, substantially rectangular chest engaging body support pad 52. The pad has a relatively soft upper surface 53 which is adapted to engage the chest of the upper torso portion of the user 12 when disposed in the running position of FIG. I. The pad is mounted for limited swinging movement relativeto the frame by a hinge 55 between the lower edge of the plate and the pad. Accordingly, the
pad can be quickly and conveniently swung to the position shown in FIG. 2 in order to provide a backrest for the user 12 when disposed in a seated position upon the body support frame 10. In such latter position, the users posterior portion is rested upon an elongated, substantially rectangular seat substantially similar to the pad 52 which is secured to the tie bar 35 by a pair of outwardly extended ears 62 with suitable bolts 63 extended therethrough closely adjacent to the upright 16 at the head end 18 of the frame.
An elongated pivot shaft 65 is extended through the upper end 30 of the upright 17 at the foot end 20 of the body support frame 10. The shaft includes opposite outer ends 66 on which are individually mounted a pair of hand gripping sleeves 67 employed by the user 12 in the seated position of FIG. 2. A pair of elongated pendulum arms 70 are individually pivotally mounted on the pivot shaft 65 on opposite sides of the upper end 30 of the upright 17. Each of the arms includes a lower end 72 terminating in spaced relation above the base member 25 on which is mounted a foot receiving pedal or plate 73 and a foot constraining stirrup 75 for limited rotation through an arc of approximately 10 to 15. The foot receiving plate is mounted for such limited movement on a stub shaft 76 outwardly extended from the lower end of the arm. It is noted that the user's foot is receivable within the stirrup 75 from either direction in order to accommodate the user in either of the two positions shown in FIGS. 1 and 2.
Secured to the inner surface of each of the pendulum arms 70 is an elongated, substantially flat, arcuate saber blade 80 which extends outwardly upwardly therefrom past the adjacent side of the upright 17. The blade has an enlarged mounting end 82 secured, as by bolting or the like, to its associated arm and an opposite end 84. The are of the blades is precisely concentrically disposed with respect to the pivot shaft 65 and with the arcuate path of travel traversed by the lower end 72 of the arm. The arcuate path of the lower end of the arm 70 has a radius extending to the oscillatory axis of the shaft 65 about which the arm 70 oscillates.
A frictional-type resistance device is disposed adjacent to the upper end 30 of the upright 17 in the path of blade movement. The resistance device provides a block-like housing 92 having a lower saddle mounting 94 adapted to be rested upon the angular upper section 32 of the upright 17 in embracing relation for rigid attachment thereto, as by welding, bolting or the like. A pair of spaced slots 96 are formed through the housing 92 of a size somewhat larger than the blades to permit passage of the blades individually therethrough. 'A pair of one-way friction devices, not shown, are disposed within the housing 92 for individual engagement with the associated blade which are operative to provide a predetermined resistance to movement of the blade therethrough during swinging movement of the arms 70 in a counterclockwise direction, as viewed in FIG. 2, and to permit substantially unrestricted, or no, resistance to such movement in the opposite direction upon swinging movement of the arms in a clockwise direction, as viewed in FIG. 2. The resistance device 90 further includes suitable controls, not shown, for adjusting the amount of resistance imposed upon the saber blades as they are extended through the slots 96 and are engaged by the friction devices therein.
OPERATION The operation of the described embodiment of the subject invention is believed to be clearly apparent and is briefly summarized at this point. Prior to use, the control mechanism of the resistance device 90 is adjusted to provide the desired resistance to movement of the saber blades 80 through the slots 96. Such resistance is calibrated on the controls through a wide range from zero, or no resistance, to a predetermined maximum resistance against movement of the pendulum arms 70 in a counterclockwise direction, as viewed in FIG. 2. Irrespective of the setting, the resistance device 90 provides no resistance to return movement of the blades 80 when the arms 70 are swung in a clockwise direction, as viewed in FIG. 2.
The user 12 disposes himself upon the body support frame in the position shown in FIG. 1 when it is desired to simulate the leg striding movement of actual running. In such position, the user is supported by engagement of his upper torso with the upper padded surface 53 of the chest receiving pad 52, his feet are slipped into the stirrups with the bottom of his feet disposed against the foot receiving plate 73. The user grasps the handle grips 42 of the handlebar assembly 40 for stability during alternate extension and retraction of his legs. During such leg movement, the pendulum arms 70 are swung in a predetermined arc with the saber blades 80 moving concentrically therewith through the slots 96 in the resistance device 90.
The foot receiving plate 73 and stirrup 75 are permitted limited rotational movement upon the stub shafts 76 as the pendulum arms are caused to swing during 'the described extension and retraction of the users legs. The users body is forwardly inclined during such leg movement so that the body attitude and striding movement of the legs permitted by the swinging pendulum arms 70 substantially simulate the body attitude and leg movement occurring during actual running. With continued use of the improved exercise device of the present invention,it is anticipated that the user may attain sufficient proficiency and balance on the body support frame to permit natural swinging or pumping of the arms to simulate natural arm movement occurring during actual running. Alternatively, the extension and retraction of the users legs can be accomplished simultaneously to swing the pendulum arms concurrently in the same direction in the manner of a conventional leg press exercise device.
In assuming the seated position of FIG. 2, the users posterior is disposed upon the seat 60 and the pad 52 is swung downwardly to the nearly vertical position shown in FIG. 2 for engagement with the users back. The users feet are slipped into the stirrups 75 on the foot receiving plates 73 from the opposite side than when utilized in the position of FIG. 1, and the users arms are stretched forwardly from the body in order that the hands can grip the hand gripping sleeves 67 outwardly adjacent to the upper ends of the pendulum arms 70. As previously described in the operation of the exercise device of the present invention, when utilized to simulate the running motion of FIG. 1, the legs of the user may be alternately extended and retracted or concurrently moved to swing the pendulum arms 70 through their arcs of travel against the resistance of the resistance device 90. Inasmuch as the saber blades 80 are concentrically disposed with respect to the pivot axis of the pivot shaft 65 and the arc of travel of the lower ends of the arms the resistance imposed upon the users legs is substantially constant throughout the entire range of arm movement.
In view of the foregoing, it is readily apparent that the structure of the present invention provides an improved exercise device which permits a user substantially to simulate the forwardly inclined attitude and leg striding movement occurring in actual running. The resistive force to such movement is substantially constant throughout the entire range of leg movement, which resistance may be varied from no resistance to a predetermined maximum resistance. The exercise device of the present invention is quickly and easily converted between a condition permitting the user to assume a running position to a condition permitting the user to be disposed in a seated position thereon without any modification of the structure. In both positions, the device may also be employed in the same manner as a conventional leg press. Accordingly, there is provided by the present invention an improved exercise device which may be employed for virtually any use involving exercises of Jhe legs.
Although the invention has been herein shown and described in what is conceived to be the most practical and preferred embodiment, it is recognized that departures may be made therefrom within the scope of the invention, which is not to be limited to the illustrative details disclosed.
Having described our invention, what we claim as new and desire to secure by Letters Patent is:
1. An exercising device comprising:
A. support means for supporting a users torso in forward-running attitude wherein a users torso is forwardly inclined and downwardly facing B. confining means for confining the movement of a users feet to oscillatory motion along an arcuate path having a radius extending to an oscillatory axis paralleling the axis of the hip joints and disposed above and rearwardly of the knee joints of the user as the user cyclically applies rearwardly directed thrusting forces and forwardly directed lifting forces to each foot; and
C. restraining means for applying to each foot a restraining force of a constant magnitude acting in opposition to said thrusting forces.
2. The device of claim 1, wherein said confining means includes a pair of depending arms supported for independent oscillation about said axis.
3. 'The device of claim 2, wherein said restraining means includes unidirectional force dissipating means for dissipating said thrusting'forces.
4. The device of claim 2, wherein said confining means further includes a pair of stirrups for separately securing a users feet to the distal end portions of said pair of arms.
5. The device of claim 4, wherein said support means is disposed forwardly and above said stirrups so that the instantaneous included angle defined by a line ex tended from the hips to the feet of the user and thence to the axis about which the arms are oscillated is an acute angle.
6. The device of claim 2, wherein said support means includes a support pad for said torso inclined from horizontal at approximately 60 and a pair of upright handles fixed forwardly of said plate and adapted to be grasped by the user.
7. The device of claim 6, wherein said support pad horizontal. includes a pivotal portion adapted to be pivoted in a 9. The device of claim 2, wherein said support means vertical plane about a horizontal axis. includes a pair of rigidly supported handles adapted to 8. The device of claim 2, wherein said support means be grasped by the user.
includes a support pad for said torso inclined from the UNITED STATES PATENT OFFICE CERTIFECATE 0F CGRRECTION Patent No. 3,759,511 mLMmL Invent0r(s) Dewayne Zinkin; Cliff J. Coker; and Kenneth A.
' V Gustatson It is certified that error appears in the above-identified patent and that said Letters Patent are hereby corrected as shown below;
Column 1, line 0, delete 'i'hea'th" and insert health--;
line 17, delete "medium" and insert --medius--; and line 27, delete "sapce" and insert --space-.
Column 6, line 22, delete "Jhe" and insert --the-; and
line 34, after. "facing" insert Signed and sealed this 25th day of December 1973.
(SEAL) Attest: r
EDWARD M.FLETCHE R,JR. I RENE D. TEGTMEYER "Attesting Officer Acting Commissioner of Patents FORM PO-1OSO (10-69) UsCOIMM-DC 00376-1 69 -k q.s. covenant PRINTING OFFICE: up: o-ase-su,
|Cited Patent||Filing date||Publication date||Applicant||Title|
|US326247 *||Feb 16, 1885||Sep 15, 1885||Exercising-machine|
|US1902694 *||Feb 8, 1932||Mar 21, 1933||Reid A Edwards||Gymnastic apparatus|
|US3074716 *||Jul 26, 1960||Jan 22, 1963||Mitchel Carl E||Swimming instructing machine and exerciser|
|US3103357 *||Nov 28, 1961||Sep 10, 1963||Berne William E||Resistance exercising apparatus|
|US3216722 *||Jan 9, 1963||Nov 9, 1965||Earl R Odom||Exercise machine|
|US3259385 *||Feb 27, 1964||Jul 5, 1966||Ben E Boren||Portable exercising device|
|US3528653 *||Oct 13, 1967||Sep 15, 1970||Nissen Corp||Rowing machine and brake unit therefor|
|US3572699 *||May 21, 1969||Mar 30, 1971||Harry B Nies||Bicycle exerciser with interconnected hand and foot pedals|
|Citing Patent||Filing date||Publication date||Applicant||Title|
|US3941377 *||Nov 19, 1974||Mar 2, 1976||Hakon Lie||Apparatus for simulated skiing|
|US4346887 *||Feb 8, 1979||Aug 31, 1982||Leonard Poole||Donkey calf exercising machine|
|US4569401 *||Jan 16, 1984||Feb 11, 1986||Luck Oliver W||Portable boxing exerciser|
|US4569532 *||Aug 1, 1984||Feb 11, 1986||Mirkarimi Seyed A||Infant crawler|
|US4641882 *||May 6, 1981||Feb 10, 1987||John Young||Orthopedic appliance|
|US4650249 *||May 28, 1985||Mar 17, 1987||Hector Serber||Ergonomic seating assembly system with front chest support component, pelvic tilt seat component and related attachments|
|US4708338 *||Aug 4, 1986||Nov 24, 1987||Potts Lanny L||Stair climbing exercise apparatus|
|US4746167 *||Dec 29, 1986||May 24, 1988||Palmer David A||Portable, knock-down massage chair|
|US4799475 *||Mar 25, 1986||Jan 24, 1989||Superspine, Inc.||Device permitting a user to simulate crawling motions to improve movement of the truncal muscles and spine|
|US4830362 *||Apr 13, 1988||May 16, 1989||Bull John W||Full body, shock-free aerobic and anaerobic exercising machine for use in the standing position|
|US4832407 *||Nov 27, 1987||May 23, 1989||Hector Serber||Variable posture chair and method|
|US4838543 *||Oct 28, 1988||Jun 13, 1989||Precor Incorporated||Low impact exercise equipment|
|US4850585 *||Sep 8, 1987||Jul 25, 1989||Weslo, Inc.||Striding exerciser|
|US4858914 *||Jul 13, 1988||Aug 22, 1989||Hix Jimmy D||Balance enhancing exercise and amusement apparatus|
|US4886050 *||Oct 31, 1988||Dec 12, 1989||Superspine||Device permitting a user to simulate crawling motions to improve movement of the truncal muscles and spine|
|US4934690 *||May 12, 1989||Jun 19, 1990||Bull John W||Shock-free aerobic and anaerobic exercising machine for use in the standing position|
|US4938474 *||Dec 23, 1988||Jul 3, 1990||Laguna Tectrix, Inc.||Exercise apparatus and method which simulate stair climbing|
|US4940233 *||Feb 19, 1988||Jul 10, 1990||John Bull||Aerobic conditioning apparatus|
|US5013031 *||Sep 17, 1990||May 7, 1991||Bull John W||Exercise apparatus|
|US5039088 *||Apr 26, 1990||Aug 13, 1991||Shifferaw Tessema D||Exercise machine|
|US5054770 *||Jun 15, 1990||Oct 8, 1991||Bull John W||Shock-free aerobic and anaerobic exercising machine for use in the standing position|
|US5178593 *||Jul 5, 1991||Jan 12, 1993||Roberts Mark J||Combination stationary recumbent exercise apparatus and upper body exerciser|
|US5242343 *||Sep 30, 1992||Sep 7, 1993||Larry Miller||Stationary exercise device|
|US5256117 *||Oct 10, 1990||Oct 26, 1993||Stairmaster Sports Medical Products, Inc.||Stairclimbing and upper body, exercise apparatus|
|US5269736 *||Jan 11, 1993||Dec 14, 1993||Roberts Mark J||Combination stationary recumbent exercise apparatus and upper body exerciser|
|US5312313 *||Mar 31, 1992||May 17, 1994||Stairmaster Sports Medical Products, Inc.||Device to prevent binding of a guidance system for an upper body exercise apparatus|
|US5330408 *||Dec 3, 1992||Jul 19, 1994||Westmoreland Jr Herbert L||Apparatus for maximizing push-ups|
|US5383829 *||Aug 13, 1993||Jan 24, 1995||Miller; Larry||Stationary exercise device|
|US5487590 *||Jun 30, 1994||Jan 30, 1996||Haynes; Robin||Chair to promulgate kinesthetic therapy: apparatus and method|
|US5496238 *||Aug 19, 1993||Mar 5, 1996||Taylor; Douglas B.||Physical conditioning apparatus|
|US5499959 *||Mar 31, 1992||Mar 19, 1996||Stairmaster Sports/Medical Products, Inc.||Upper body exercise apparatus|
|US5503457 *||Jan 5, 1995||Apr 2, 1996||Rosado; Ralph||Combination lounge and study chair|
|US5518473 *||Mar 20, 1995||May 21, 1996||Miller; Larry||Exercise device|
|US5527246 *||Aug 31, 1995||Jun 18, 1996||Rodgers, Jr.; Robert E.||Mobile exercise apparatus|
|US5529555 *||Jun 6, 1995||Jun 25, 1996||Ccs, Llc||Crank assembly for an exercising device|
|US5540637 *||Jul 17, 1995||Jul 30, 1996||Ccs, Llc||Stationary exercise apparatus having a preferred foot platform orientation|
|US5540639 *||Sep 21, 1993||Jul 30, 1996||Stairmaster Sports/Medical Products, Inc.||Device to prevent arcuate motion of a user assist platform for an upper body exercise apparatus|
|US5549526 *||Apr 19, 1995||Aug 27, 1996||Ccs, Llc||Stationary exercise apparatus|
|US5573480 *||Jan 25, 1995||Nov 12, 1996||Ccs, Llc||Stationary exercise apparatus|
|US5575740 *||May 24, 1995||Nov 19, 1996||Piaget; Gary D.||Striding exerciser with upwardly curved tracks|
|US5591107 *||Feb 23, 1996||Jan 7, 1997||Rodgers, Jr.; Robert E.||Mobile exercise apparatus|
|US5593371 *||Feb 16, 1996||Jan 14, 1997||Ccs, Llc||Stationary exercise apparatus|
|US5593372 *||Jun 30, 1995||Jan 14, 1997||Ccs, Llc||Stationary exercise apparatus having a preferred foot platform path|
|US5595553 *||Feb 16, 1996||Jan 21, 1997||Ccs, Llc||Stationary exercise apparatus|
|US5611757 *||Feb 23, 1996||Mar 18, 1997||Rodgers, Jr.; Robert E.||Mobile exercise apparatus|
|US5611758 *||May 15, 1996||Mar 18, 1997||Ccs, Llc||Recumbent exercise apparatus|
|US5616107 *||Mar 9, 1995||Apr 1, 1997||Cybex International, Inc.||Method and apparatus for leg press exercise with counterbalance|
|US5628715 *||Feb 14, 1995||May 13, 1997||Cybex International, Inc.||Squat press exercise machine|
|US5637058 *||Feb 16, 1996||Jun 10, 1997||Ccs, L.L.C.||Stationary exercise apparatus|
|US5653662 *||May 24, 1996||Aug 5, 1997||Rodgers, Jr.; Robert E.||Stationary exercise apparatus|
|US5683333 *||Feb 16, 1996||Nov 4, 1997||Ccs, Llc||Stationary exercise apparatus|
|US5685804 *||Jun 27, 1996||Nov 11, 1997||Precor Incorporated||Stationary exercise device|
|US5690589 *||Mar 14, 1996||Nov 25, 1997||Rodgers, Jr.; Robert E.||Stationary exercise apparatus|
|US5738614 *||May 24, 1996||Apr 14, 1998||Rodgers, Jr.; Robert E.||Stationary exercise apparatus with retractable arm members|
|US5743834 *||Apr 29, 1997||Apr 28, 1998||Rodgers, Jr.; Robert E.||Stationary exercise apparatus with adjustable crank|
|US5755642 *||Jan 16, 1997||May 26, 1998||Miller; Larry||Exercise device|
|US5766113 *||Jun 18, 1996||Jun 16, 1998||Ccs, Llc||Stationary exercise apparatus having a preferred foot platform path|
|US5772558 *||Jun 18, 1996||Jun 30, 1998||Ccs, Llc||Stationary exercise apparatus|
|US5795268 *||Dec 6, 1996||Aug 18, 1998||Husted; Royce H.||Low impact simulated striding device|
|US5813949 *||Jun 18, 1996||Sep 29, 1998||Ccs, Llc||Stationary exercise apparatus having a preferred foot platform orientation|
|US5833575 *||May 27, 1997||Nov 10, 1998||Holslag; Nicholas J. C.||Portable exercise apparatus having chair mountable support base and variable resistance exercise arms|
|US5908373 *||Apr 9, 1997||Jun 1, 1999||Pitre; John||Full body exercise apparatus|
|US5916065 *||Feb 10, 1998||Jun 29, 1999||Stamina Products, Inc.||Multiple leg movement exercise apparatus|
|US5924962 *||Jun 18, 1996||Jul 20, 1999||Ccs Fitness, Inc.||Stationary exercise apparatus|
|US5938567 *||Oct 23, 1997||Aug 17, 1999||Ccs Fitness, Inc.||Stationary exercise apparatus|
|US5941804 *||Aug 20, 1998||Aug 24, 1999||Johnston; Allen K.||Exercise machine for simulating running|
|US6120416 *||Aug 12, 1996||Sep 19, 2000||Don F. Walker||Isometric arm and leg exerciser|
|US6123650 *||Nov 3, 1998||Sep 26, 2000||Precor Incorporated||Independent elliptical motion exerciser|
|US6165107 *||Mar 18, 1999||Dec 26, 2000||Illinois Tool Works Inc.||Flexibly coordinated motion elliptical exerciser|
|US6183398||Feb 12, 1999||Feb 6, 2001||Unisen, Inc.||Exercise trainer with a stride multiplier|
|US6238321||Oct 14, 1999||May 29, 2001||Illinois Tool Works, Inc.||Exercise device|
|US6277055||Apr 23, 1999||Aug 21, 2001||Illinois Tool Works, Inc.||Flexibly coordinated stationary exercise device|
|US6511402||Jan 23, 2001||Jan 28, 2003||Unisen, Inc.||Power controlled exercising machine and method for controlling the same|
|US6551218||Apr 26, 2000||Apr 22, 2003||Unisen, Inc.||Deep stride exercise machine|
|US6575877||Dec 19, 2000||Jun 10, 2003||Unisen, Inc.||Exercise trainer with interconnected grounded movement|
|US6626802||Dec 22, 1999||Sep 30, 2003||Robert E. Rodgers, Jr.||Stationary type of exercise apparatus that enables movement of the user's feet in a reciprocating motion|
|US6689019||Mar 30, 2001||Feb 10, 2004||Nautilus, Inc.||Exercise machine|
|US6752744||May 29, 2001||Jun 22, 2004||Precor Incorporated||Exercise device|
|US6908416||Oct 22, 2001||Jun 21, 2005||Unisen, Inc.||Exercise and therapeutic trainer|
|US6923748||Sep 27, 2002||Aug 2, 2005||John J. Mauz||Sequential contraction muscle training device|
|US7025710||Jun 18, 2002||Apr 11, 2006||Unisen, Inc.||Elliptical exercise device and arm linkage|
|US7097593||Aug 11, 2003||Aug 29, 2006||Nautilus, Inc.||Combination of treadmill and stair climbing machine|
|US7125371||Jun 24, 2004||Oct 24, 2006||Alasdair David Henderson||Adjustable bodyweight exercise apparatus|
|US7169088||Nov 26, 2003||Jan 30, 2007||Rodgers Jr Robert E||Compact variable path exercise apparatus|
|US7169089||Nov 26, 2003||Jan 30, 2007||Rodgers Jr Robert E||Compact variable path exercise apparatus with a relatively long cam surface|
|US7172531||Nov 26, 2003||Feb 6, 2007||Rodgers Jr Robert E||Variable stride exercise apparatus|
|US7179201||Jun 7, 2004||Feb 20, 2007||Rodgers Jr Robert E||Variable stride exercise apparatus|
|US7201705||Nov 25, 2003||Apr 10, 2007||Rodgers Jr Robert E||Exercise apparatus with a variable stride system|
|US7214168||Nov 26, 2003||May 8, 2007||Rodgers Jr Robert E||Variable path exercise apparatus|
|US7244217||Nov 26, 2003||Jul 17, 2007||Rodgers Jr Robert E||Exercise apparatus that allows user varied stride length|
|US7267637||Jun 16, 2005||Sep 11, 2007||Unisen, Inc.||Exercise and therapeutic trainer|
|US7341542||Dec 19, 2003||Mar 11, 2008||Nautilus, Inc.||Exercise machine|
|US7455626||Dec 31, 2001||Nov 25, 2008||Nautilus, Inc.||Treadmill|
|US7462134||Jun 22, 2004||Dec 9, 2008||Nautilus, Inc.||Variable stride exercise device|
|US7544153||Aug 8, 2006||Jun 9, 2009||Nautilus, Inc.||Treadmill|
|US7585263 *||Nov 5, 2007||Sep 8, 2009||Ab Coasler Holdings, Inc.||Abdominal exercise machine|
|US7611445||Nov 3, 2009||Ab Coaster Holdings, Inc.||Abdominal exercise machine|
|US7635324 *||Mar 26, 2007||Dec 22, 2009||Anastasios Balis||Extensor muscle based postural rehabilitation systems and methods with integrated multimedia therapy and instructional components|
|US7691041 *||Apr 6, 2010||Abdo John S||Exercise machine|
|US7758473||Aug 20, 2008||Jul 20, 2010||Nautilus, Inc.||Variable stride exercise device|
|US7785235||Aug 31, 2010||Nautilus, Inc.||Variable stride exercise device|
|US8419598||Jan 30, 2006||Apr 16, 2013||Precor Incorporated||Adjustable total body cross-training exercise device|
|US8529413 *||Dec 27, 2010||Sep 10, 2013||Tee And Ell Weight Lifting And Exercise Enterprises, Inc.||Apparatus and method for lower back exercise|
|US8647240||Oct 8, 2010||Feb 11, 2014||Innovative Applications, Inc.||Exercise device|
|US8870726||Dec 3, 2010||Oct 28, 2014||Icon Ip, Inc.||System and method for exercising|
|US9155933 *||Feb 21, 2014||Oct 13, 2015||Preventive Medical Health Care Co., Ltd.||High knees exercise apparatus|
|US9233277 *||Mar 8, 2013||Jan 12, 2016||Mark A. Krull||Exercise bench methods and apparatus|
|US20020049122 *||Oct 22, 2001||Apr 25, 2002||Fred Mercado||Exercise and therapeutic trainer|
|US20040058784 *||Jul 1, 2003||Mar 25, 2004||Roberts Robert E.||Stationary type of exercise apparatus that enables movement of the user's feet in a reciprocating motion|
|US20040077463 *||Feb 26, 2003||Apr 22, 2004||Rodgers Robert E.||Stationary exercise apparatus with pivoting foot platforms|
|US20040248704 *||Nov 26, 2003||Dec 9, 2004||Rodgers Robert E.||Compact variable path exercise apparatus|
|US20040248705 *||Nov 26, 2003||Dec 9, 2004||Rodgers Robert E.||Variable path exercise apparatus|
|US20040248706 *||Nov 26, 2003||Dec 9, 2004||Rodgers Robert E.||Variable stride exercise apparatus|
|US20040248708 *||Jun 7, 2004||Dec 9, 2004||Rodgers Robert E.||Variable stride exercise apparatus|
|US20040248709 *||Jun 7, 2004||Dec 9, 2004||Rodgers Robert E.||Variable stride exercise apparatus|
|US20040248710 *||Nov 25, 2003||Dec 9, 2004||Rodgers Robert E.||Exercise apparatus with a variable stride system|
|US20040248711 *||Nov 26, 2003||Dec 9, 2004||Rodgers Robert E.||Exercise apparatus that allows user varied stride length|
|US20050003938 *||Jun 24, 2004||Jan 6, 2005||Henderson Alasdair David||Adjustable bodyweight exercise apparatus|
|US20050049117 *||Aug 27, 2004||Mar 3, 2005||Rodgers Robert E.||Striding simulators|
|US20050107224 *||Nov 8, 2004||May 19, 2005||Zinnur Akhmetov||Cardiovascular spine exerciser|
|US20050124466 *||Dec 6, 2004||Jun 9, 2005||Rodgers Robert E.Jr.||Pendulum striding exercise apparatus|
|US20050124467 *||Dec 6, 2004||Jun 9, 2005||Rodgers Robert E.Jr.||Pendulum striding exercise devices|
|US20050277520 *||Sep 13, 2004||Dec 15, 2005||Richard Van Waes||Adjustable hand grip for exercise machine|
|US20060100070 *||Nov 8, 2005||May 11, 2006||Abdo John S||Exercise machine|
|US20070054788 *||Sep 7, 2005||Mar 8, 2007||Johnston Allen K||Control system and method for exercise machine|
|US20070149370 *||Nov 30, 2006||Jun 28, 2007||Wallace Brown||Abdominal exerciser device|
|US20070270295 *||Mar 26, 2007||Nov 22, 2007||Anastasios Balis||Extensor muscle based postural rehabilitation systems and methods with integrated multimedia therapy and instructional components|
|US20080070765 *||Nov 5, 2007||Mar 20, 2008||Ab Coaster Holdings, Inc.||Abdominal exercise machine|
|US20090018000 *||Sep 16, 2008||Jan 15, 2009||Wallace Brown||Abdominal exercise machine|
|US20120165168 *||Dec 27, 2010||Jun 28, 2012||Westside Barbell||Apparatus and method for lower back exercise|
|US20140274580 *||May 27, 2013||Sep 18, 2014||Preventive Medical Health Care Co., Ltd.||High knees exercise apparatus|
|US20140274609 *||Feb 21, 2014||Sep 18, 2014||Preventive Medical Health Care Co., Ltd.||High knees exercise apparatus|
|USD660383||May 22, 2012||Icon Ip, Inc.||Dual curved support for an exercise device|
|USRE34959 *||Nov 8, 1991||May 30, 1995||Stairmaster Sports/Medical Products, Inc.||Stair-climbing exercise apparatus|
|USRE38803||Nov 12, 1999||Sep 27, 2005||Robert E. Rodgers, Jr.||Stationary exercise apparatus having a preferred foot platform path|
|USRE42698||Sep 13, 2011||Nautilus, Inc.||Treadmill having dual treads for stepping exercises|
|WO1986006940A1 *||May 23, 1986||Dec 4, 1986||Hector Serber||Ergonomic seating assembly|
|WO1987005816A1 *||Mar 17, 1987||Oct 8, 1987||Superspine, Inc.||Device permitting a user to simulate crawling motions to improve movement of the truncal muscles and spine|
|WO2006052972A1 *||Nov 8, 2005||May 18, 2006||Abdo John S||Exercise machine|
|U.S. Classification||482/51, 482/115, 482/142, 482/63, 297/423.1|
|International Classification||A63B23/04, A63B23/035, A63B21/015|
|Cooperative Classification||A63B21/015, A63B2225/30, A63B2022/0051, A63B21/00069, A63B2208/0238, A63B2208/0261, A63B22/0056|
|European Classification||A63B22/00P6, A63B21/015|