|Número de publicación||US3917262 A|
|Tipo de publicación||Concesión|
|Fecha de publicación||4 Nov 1975|
|Fecha de presentación||31 Ene 1974|
|Fecha de prioridad||31 Ene 1974|
|Número de publicación||US 3917262 A, US 3917262A, US-A-3917262, US3917262 A, US3917262A|
|Inventores||Larry A Salkeld|
|Cesionario original||Larry A Salkeld|
|Exportar cita||BiBTeX, EndNote, RefMan|
|Citas de patentes (3), Citada por (54), Clasificaciones (18)|
|Enlaces externos: USPTO, Cesión de USPTO, Espacenet|
United States Patent 1191 Salkeld Nov. 4, 1975 LEG EXERCISING APPARATUS 3,708,166 1/1973 Annas 272/81 x  Inventor: Larry A. Salkeld, 928 Harvard Road Monroevme 15146 Primary Exammer-R1chard C. Pmkham Assistant ExaminerJoseph R. Taylor  Filed: Jan. 31, 1974  Appl. No.: 438,396  ABSTRACT An exercising apparatus of the leg-press type having 52 U.S. (:1 272/58; 272/81 foot Pedals which are P y Suspended from a 51 Int. Cl A63b 23/04 like frame- The foot Pedals are Connected through  Field of Search 272/58, 81, 84 chanical linkage to a Stack of Weights Positioned for vertical movement to the side of the foot pedals. An [56 References Cited exerciser seated in a seat in front of the foot pedals UNITED STATES PATENTS may exercise his legs against the foot pedals. The exerv ciser may reach the weights from the seat. 3,116,062 12/1963 Zinkm 272/58 3,573,865 4/1971 Annas 272/81 4 Claims, 3 Drawing Figures /0 16 34b) 36 34 3o l6 11 1 34 I l 34a I 4 V 38 28 -22 11 32 1 l 1 l1 40 -I4 ll \E; 1 ff l1 l r' o US. Patent Nov. 4, 1975 Sheet 1 of2 3,917,262
US. Patent Nov. 4, 1975 Sheet2of2 3,917,262
LEG EXERCISING APPARATUS BACKGROUND OF THE INVENTION This invention relates to exercising apparatus for physical development and muscular rehabilitation. The importance of physical exercise to good health has long been recognized. The present invention is directed to providing a compact leg exercising apparatus which permits the user to obtain the beneficial results of leg exercise. In my co-pending Patent Application, Ser. No. 171,525, now US. Pat. No. 3,820,782, filed on Aug. 13, 1971, and entitled Leg Exercising Apparatus," I disclose and claim an exercising apparatus in which foot pedals move along a track to raise a series of weights through a chain and sprocket assembly.
While my earlier invention is useful in leg exercising development, I have found that some maintenance problems have developed with the chain and sprocket arrangement, notably the requirement for lubrication of the chain and sprockets and the track along which the foot pedals move.
The present invention utilizes a linkage between the foot pedals and the weights. All of the pivoting points of the linkage are formed with graphite impregnated nylon bearings so that they are self-lubricating. The present invention provides a compact, maintenancefree exercising apparatus.
SUMMARY The present invention is directed to an improved exercising apparatus wherein an exerciser seated in front of the apparatus may bear against foot pedals that move the varying number of weights to provide graduated exercise for the legs. The linkage connecting the foot pedals and the weights is designed at a mechanical disadvantage and is selflubricating and maintenance free.
With the foregoing considerations in mind, it is an object of the present invention to provide an improved leg exercising apparatus.
Another object of the present invention is to provide a leg exercising apparatus which is substantially maintenance free.
These and other objects of the present invention will become apparent as this description proceeds in conjunction with the accompanying drawings.
DESCRIPTION OF THE DRAWINGS FIG. 1 is a front elevation of the leg exercising apparatus of the present invention.
FIG. 2 is a side elevational section of the apparatus of FIG. 1 taken along line 2-2 of FIG. 1.
FIG. 3 is a schematic view of the linkage arrangement of the present invention.
DESCRIPTION OF THE PREFERRED EMBODIMENT Referring to the drawings, there is shown a leg exercising apparatus having a boxlike frame composed of front upright members 12 and rear upright members 14. The upright members are connected at top and bottom by cross members 16.
At the center of the front of the apparatus, an upright member 18 divides the front into two approximately equal sides. Extending between center upright 18 and one front upright 12 is a horizontal pivot 20. A foot pedal support member 22 is pivoted on horizontal pivot 20 by a graphite impregnated nylon bearing. The foot pedal support member 22 has two pairs of foot pedals 24 and 26 formed integrally therewith. The foot pedals 24 are above the foot pedals 26 and, accordingly, foot pedals 24 provide a shorter lever arm from pivot 20 and therefore require a greater force to move the linkage as will hereinafter more fully appear.
At the top end of foot pedal support member 22, a link 28 is pivotally connected to the support member 22 through a pivot connection 30 formed with a graphite impregnated nylon bearing. At the other end, link 28 is connected through pivot connection 32 to a bellcrank 34. Again, a graphite impregnated nylon bearing is utilized at the pivot connection 32.
Bellcrank 34 consists of an offset bellcrank arrangement having an arm 34a which is connected to link 28. Arm 34a is rigidly fixed to a tubular offset 34b extending across the front of the apparatus 10. Tubular offset 34b has fixed thereto a second arm 340 that is laterally offset to the other side of center upright 18 as is best seen in FIG. 1. The bellcrank 34 is pivotally connected to the frame by pivot connections 36 at each end of the tubular offset 34b. These pivot connections 36 have a graphite impregnated nylon bearing.
Arm 34c of bellcrank 34 is pivotally connected to link 40 through pivot connection 38. Link 40 extends in a generally vertical fashion to weight supporting means 44 to which it is connected by a pivot connection 42. Pivot connections 38 and 42 are both formed with graphite impregnated nylon bearings.
A plurality of weights 46 are stacked one on top of the other for vertical movement along tracks 48. The tracks 48 are fixed to the frame and the weights 46 slide up and down the tracks 48. The weight supporting means 44 extends down through the stack of weights 46 and, in conventional fashion, the weight supporting means 44 has a plurality of holes formed therein. By properly positioning a key pin through one of the weights and into the weight supporting means 44, all of the weights above the pinned weight are lifted when weight supporting means 44 is moved upwardly. Thus, the positioning of the key pin enables the user of the apparatus to vary the effective weight with which he is exercising.
Extending from the front of the frame is a seat bar 50 as best seen in FIG. 2. The seat bar 50 extends below the seat 52 which has a telescoping tube 54 fixed to the bottom thereof. The seat 52 has an upright support 52a which contacts the floor behind the seat. With the telescoping tube, the distance between seat 52 and the frame of the apparatus may be varied and then the distance may be locked by use of key 56 which places through mating holes in the telescoping tube 54 and the seat bar 50.
The linkage arrangement of the present invention has been designed so that the weights 46 are lifted with a mechanical disadvantage to the exerciser who pushes upon said pedals 24 or 26. This permits fewer weights to provide the greater exercise which ordinarily requires a greater number of weights. Further, by providing two sets of foot pedals, 24 and 26, a greater variation in the amount of weights which can be lifted is provided.
As viewed in FIG. 2, and also in the schematic representation of FIG. 3, it may be seen that when the foot pedals 24 or 26 are forced to the left as viewed in those figures, the foot pedal support member 22 moves in a clockwise direction about pivot 20. This movement causes the link 28 to be moved to the right and to rotate arm 34a of bellcrank 34 in a counterclockwise direction about pivot connection 36. The movement of arm 34a in the counterclockwise direction causes the other arm 340 of bellcrank 34 to move in a counterclockwise direction thereby moving link 40 upwardly so that weight supporting means 44 is also moved upwardly.
The unique linkage of the present invention permits the weights 46 to be within reach of an exerciser seated upon the seat 52. The exerciser can operate the key pin for the weights in order to vary the number of weights that will be lifted during each of his exercising movements.
All of the pivoting connections of the present invention utilize graphite impregnated nylon bearings so that they are maintenance free, require no lubrication, and the entire apparatus is free of oil dripping beneath it as so often occurs on present exercising machines.
According to the provisions of the patent statutes, 1 have explained the principle, preferred construction, and mode of operation of my invention and have illustrated and described what I now consider to represent its best embodiment. However, I desire to have it understood that within the scope of the appended claims, the invention may be practiced otherwise than as specifically illustrated and described.
What is claimed is:
1. An exercising apparatus of the leg-press type comprising:
a. an upstanding box-like frame,
b. at least one pair of foot pedals,
c. a vertically positioned foot pedal supporting member fixed to said foot pedals and pivotally mounted on a horizontal member attached to said frame for pivoting about a horizontal axis,
."d. a weight supporting means extending vertically through a plurality of weights slideably mounted on said box-like frame for vertical movement relative to said frame whereby a predetermined number of i said weights may be attached to said weightsupporting means for movement therewith,
e. linkage means pivotally mounted onsaid box-like frame connecting said foot pedal supporting member and said weight support means sothat force exerted upon said foot pedals acts at a mechanical disadvantage to raise said weight supporting means, said linkage means consisting of a bellcrank pivotally supported by a horizontal pivot means fixed to the top of said box-like frame, a first rigid link pivotally secured at one end to the end of said foot pedal supporting member and at the other end to said bellcrank, and a second link pivotally secured at one end to the opposite end of said bellcrank and pivotally secured at the other end to said weight supporting means, and
f. a seat adjustably fixable to said frame in front of said foot pedals whereby an exerciser seated in said seat may exert a force upon said foot pedals to exercise his legs.
2. The apparatus of claim 1 wherein two pairs of foot pedals are attached to said foot pedal supporting member so that each pair of foot pedals provides a different mechanical disadvantage when raising said weight sup,- porting means.
3. The apparatus of claim 1 wherein all of the pivoting connections are formed with self-lubricating bearings whereby said apparatus requires no external lubrication. Y
4. The apparatus of claim 1 wherein said plurality of weights are stacked one on top of the other to one side of said foot pedals so that the exerciser, while seated in said seat, may adjust the number of weights effectively attached to said weight supporting member.
|Patente citada||Fecha de presentación||Fecha de publicación||Solicitante||Título|
|US3116062 *||22 Nov 1960||31 Dic 1963||Zinkin Harold||Exercising apparatus|
|US3573865 *||2 Oct 1968||6 Abr 1971||Paramount Health Equip Corp||Weight shifting mechanism for exercising|
|US3708166 *||13 Sep 1971||2 Ene 1973||Paramount Health Equip Corp||Butterfly exercise machine|
|Patente citante||Fecha de presentación||Fecha de publicación||Solicitante||Título|
|US4149714 *||28 Jul 1977||17 Abr 1979||Lambert Jr Lloyd J||Seated weight lifting leg press exercise machine|
|US4169589 *||28 Sep 1977||2 Oct 1979||Mcarthur James A||Leg exercising apparatus|
|US4236712 *||31 Ene 1979||2 Dic 1980||Lambert Jr Lloyd J||Standing calf exercise machine|
|US4354675 *||6 Feb 1980||19 Oct 1982||Global Gym & Fitness Equipment Limited||Weight lifting device|
|US4553747 *||10 May 1983||19 Nov 1985||Pursley David A||Rotator cuff machine|
|US4561651 *||16 May 1983||31 Dic 1985||Hole Robert W||Weight lifting machine|
|US4600188 *||25 Nov 1985||15 Jul 1986||Brigham Young University||Exercise machine for limb extremity digits|
|US4614338 *||29 Oct 1984||30 Sep 1986||Castillo David D||Horizontal force exercise apparatus|
|US4616825 *||4 Mar 1985||14 Oct 1986||Anderson Melvin J||Aerobic exercise machine|
|US4757991 *||27 Ene 1987||19 Jul 1988||Henry Maag||Lat isolating exercise machine|
|US4790530 *||14 Abr 1987||13 Dic 1988||Henry Maag||Arm flexion exercise machine|
|US4822038 *||28 Oct 1987||18 Abr 1989||Henry Maag||Calf isolating exercise machine|
|US4838548 *||1 Sep 1988||13 Jun 1989||Maag Henry H||Four-bar variable resistance leg extension machine|
|US4883269 *||9 May 1988||28 Nov 1989||Conroy Shaver||Attachment for exercise bench|
|US4883270 *||9 Feb 1989||28 Nov 1989||Maag Henry H||Four-bar variable-resistance frontal calf developing machine|
|US4964632 *||6 Sep 1989||23 Oct 1990||Diversified Products Corporation||Compact multi-function weight-training exerciser|
|US4986538 *||25 Ago 1989||22 Ene 1991||Vectra Fitness, Inc.||Multi-station exercise machine with multi-exercise press station|
|US5080351 *||15 Jun 1990||14 Ene 1992||Diversified Products Corporation||Compact multi-function weight-training exerciser|
|US5131897 *||19 Jul 1991||21 Jul 1992||Krieger Howard G||Leg press adapter plate kit|
|US5135447 *||15 Mar 1991||4 Ago 1992||Life Fitness||Exercise apparatus for simulating stair climbing|
|US5217422 *||6 Ene 1992||8 Jun 1993||Zel-X, Inc.||Compact exercise apparatus and method|
|US5256125 *||7 Jul 1992||26 Oct 1993||Jones Arthur A||Biceps curl machine|
|US5263914 *||15 Mar 1991||23 Nov 1993||Loredan Biomedical, Inc.||Weight machine|
|US5267923 *||19 Ene 1993||7 Dic 1993||Gary Piaget||Reciprocating bellows operated exercise machine|
|US5342270 *||22 Feb 1993||30 Ago 1994||Jones Arthur A||Exercise machine for upper torso|
|US5484365 *||13 May 1993||16 Ene 1996||Medx Corporation||Leg press exercise machine|
|US5556361 *||5 Jul 1995||17 Sep 1996||Liao; Nien-Yuan||Foldable exercise device capable of simulating a horse riding|
|US5667463 *||15 Sep 1992||16 Sep 1997||Jones; Arthur A.||Exercise machines and methods|
|US5683334 *||18 Ene 1995||4 Nov 1997||Webber; Randall T.||Exercise apparatus with multi-exercise press station|
|US6264585 *||14 May 1998||24 Jul 2001||Claude Beauchamp||Direct drive exercising apparatus|
|US7614978||20 Dic 2007||10 Nov 2009||Gary D. Piaget||Stair climbing exercise apparatus with improved bellows|
|US7794372||14 Sep 2010||Hoist Fitness Systems, Inc.||Leg press exercise machine with self-aligning pivoting seat|
|US7824315||2 Nov 2010||Gary D. Piaget||Stair climbing exercise apparatus with improved bellows|
|US7878953||1 Feb 2011||Hoist Fitness Systems, Inc.||Leg press exercise machine with self-aligning pivoting seat|
|US7938760||17 Oct 2008||10 May 2011||Hoist Fitness Systems, Inc.||Exercise machine with lifting arm|
|US7988603||31 Ago 2010||2 Ago 2011||Hoist Fitness Systems, Inc.||Leg press exercise machine with self-aligning pivoting seat|
|US7993251||9 Ago 2011||Hoist Fitness Systems, Inc.||Pectoral fly exercise machine|
|US8162807||30 Ago 2010||24 Abr 2012||Hoist Fitness Systems, Inc.||Exercise machine with multi-function user engagement device|
|US8177693||17 Feb 2011||15 May 2012||Hoist Fitness Systems, Inc.||Calf exercise machine with rocking user support|
|US8246522||29 Sep 2010||21 Ago 2012||Gary D. Piaget||Stair climbing exercise apparatus with improved bellows|
|US8562496||3 Mar 2011||22 Oct 2013||Hoist Fitness Systems, Inc.||Thigh exercise machine with rocking user support|
|US8734304||3 Mar 2011||27 May 2014||Hoist Fitness Systems, Inc.||Low back exercise machine with rocking user support|
|US9079069 *||10 Oct 2013||14 Jul 2015||Greenfields Outdoor Fitness, Inc.||Wheelchair accessible fitness equipment|
|US20070265147 *||10 May 2006||15 Nov 2007||Shingary Edward D||Exercise equipment|
|US20080076643 *||20 Sep 2007||27 Mar 2008||Medx Corporation||Weight Training Apparatus and Method|
|US20080153677 *||11 Mar 2008||26 Jun 2008||Hoist Fitness Systems, Inc.||Leg press exercise machine with self-aligning pivoting seat|
|US20090163325 *||20 Dic 2007||25 Jun 2009||Gary Piaget||Stair climbing exercise apparatus with improved bellows|
|US20090270230 *||2 Jul 2009||29 Oct 2009||Gary Piaget||Stair climbing exercise apparatus with improved bellows|
|US20100323853 *||31 Ago 2010||23 Dic 2010||Hoist Fitness Systems, Inc.||Leg press exercise machine with self-aligning pivoting seat|
|US20110015043 *||29 Sep 2010||20 Ene 2011||Gary Piaget||Stair climbing exercise apparatus with improved bellows|
|CN102805913A *||31 Ago 2012||5 Dic 2012||山东轻工业学院||Leg fitness mechanism|
|EP0021557A2 *||3 Mar 1980||7 Ene 1981||Global Gym & Fitness Equipment Limited||Exercise apparatus|
|EP0240087A1 *||2 Abr 1987||7 Oct 1987||Jaap Albert Johan Hesselink||Exercising apparatus consisting of a weight unit and at least one work unit|
|WO1991015270A1 *||1 Abr 1991||17 Oct 1991||Loredan Biomedical, Inc.||Weight machine|
|Clasificación de EE.UU.||482/98, 482/137|
|Clasificación internacional||A63B21/062, A63B23/04, A63B21/00|
|Clasificación cooperativa||A63B23/0429, A63B23/03525, A63B23/0405, A63B2208/0238, A63B2225/30, A63B2021/0626, A63B21/062, A63B21/159|
|Clasificación europea||A63B23/035C2, A63B21/15L, A63B23/04B4, A63B21/062, A63B23/04B|