US20070179028A1 - Apparatus and Methods for Pad Assemblies for Exercise Machines - Google Patents
Apparatus and Methods for Pad Assemblies for Exercise Machines Download PDFInfo
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- US20070179028A1 US20070179028A1 US11/623,248 US62324807A US2007179028A1 US 20070179028 A1 US20070179028 A1 US 20070179028A1 US 62324807 A US62324807 A US 62324807A US 2007179028 A1 US2007179028 A1 US 2007179028A1
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- Prior art keywords
- user
- layer
- pad assembly
- cross
- exercise
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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
- A63B23/00—Exercising apparatus specially adapted for particular parts of the body
- A63B23/035—Exercising apparatus specially adapted for particular parts of the body for limbs, i.e. upper or lower limbs, e.g. simultaneously
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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
- A63B21/00—Exercising apparatus for developing or strengthening the muscles or joints of the body by working against a counterforce, with or without measuring devices
- A63B21/40—Interfaces with the user related to strength training; Details thereof
- A63B21/4001—Arrangements for attaching the exercising apparatus to the user's body, e.g. belts, shoes or gloves specially adapted therefor
Definitions
- the present invention relates to apparatus and methods for pad assemblies for exercise machines, and more specifically, to pad assemblies that provide improved pressure distribution and comfort characteristics during an exercise.
- FIG. 1 shows an exercise machine 42 in accordance with the prior art.
- This exercise machine 42 may be used for developing arm and leg muscles, and includes a support frame 44 with a seat 46 , and a pair of swing arms 48 rotatably coupled to the support frame 44 .
- Each swing arm 48 includes a stirrup 50 for receiving one of the user's feet, a leg pad 52 , and a cylindrical arm pad 54 .
- the arm and leg pads 54 , 52 are attached to a support 49 of the swing arm 48 .
- An elastic band 56 is attached between the two swing arms 48 .
- a user may sit on the seat 46 with the user's feet inserted into the stirrups 50 , and with an outer portion of each of the user's legs engaged with the leg pads 52 .
- the swing arm 48 pivots outwardly and stretches the elastic band 56 .
- the elastic band 56 moves the swing arm 48 inwardly to an initial, resting position.
- the user places a portion of the user's arm (e.g. the forearm or hand) against one of the cylindrical arm pads 54 and applies an outwardly-directed force, causing the swing arm 48 to pivot outwardly and stretching the elastic band 56 .
- Exercise machines of the type shown in FIG. 1 are more fully described in U.S. Pat. No. 5,409,439 issued to Lee.
- U.S. Pat. No. 4,776,587 to Carlson et al. discloses an exercise device having a pair of leg pad assemblies that bear against the user's shins during a leg extension exercise.
- U.S. Pat. No. 4,509,746 to Mask teaches exercise machines having a flat leg pad that bears against the back of the user's calf during a leg curl exercise.
- U.S. Pat. No. 5,716,308 to Lee teaches an exercise machine having a pair of cylindrical arm pads that engage inside surfaces of a user's arms during a chest or “fly” exercise, and in U.S.
- Pat. No. 5,135,457 issued to Caruso teaches leg exercise machines having pad assemblies that engage a user's shoulders and knees during a leg exercise. Many other examples of exercise machines having pad assemblies that engage portions of a user's body during an exercise are known.
- FIG. 2 shows an enlarged, partial cross-sectional view of a swing arm 48 of FIG. 1 engaged with portions of a user's body.
- the upper portion of FIG. 2 shows a cross-sectional view of a user's forearm 58 engaged with the arm pad 54 during an arm exercise.
- the outer surface of the arm pad 54 is compressed from an initial position 60 to a compressed position 62 .
- the pressure i.e.
- a peak-pressure area 64 that typically corresponds to the most highly compressed portion of the arm pad 54 .
- the pressure on the user's forearm 58 decreases from the peak-pressure area 64 over those portions of the user's forearm 58 that are spaced apart from the peak-pressure area 64 and that are in contact with less-compressed portions of the arm pad 54 .
- FIG. 2 shows a cross-sectional view of a user's leg 66 engaged against the leg pad 52 during a leg exercise.
- the outer surface of the leg pad 52 is compressed from an uncompressed position 68 to a compressed position 70 .
- the pressure on the user's leg 66 is greatest at a peak-pressure area (or point) 72 usually corresponding to the most highly compressed portion of the leg pad 52 , and decreases from the peak-pressure area 72 over those portions of the user's leg 66 that are in contact with less compressed portions of the leg pad 52 .
- the leg pad 52 does not compress uniformly and the pressure distribution over the user's leg 66 is substantially non-uniform.
- a pad assembly includes a compressible layer having a first surface adapted to engage a portion of a user's body, the first surface having a convex shape in a first cross-sectional direction of the compressible layer, and having a concave shape in a second cross-sectional direction of the compressible layer.
- the first and second cross-sectional directions may be approximately orthogonal.
- at least one of the convex and concave shapes may have a constant radius of curvature.
- Pad apparatus in accordance with the present invention may advantageously improve the pressure experienced by a user during an exercise, thereby improving the user's satisfaction with the exercise machine.
- FIG. 1 is an isometric view of an exercise machine in accordance with the prior art.
- FIG. 2 is an enlarged, partial cross-sectional view of the exercise machine of FIG. 1 engaged with portions of a user's body during an exercise.
- FIG. 3 is an enlarged, partial cross-sectional view of arm and leg 25 pad assemblies in accordance with two embodiments of the invention.
- FIG. 4 is a schematic side elevational view of a leg exercise machine having a pad assembly in accordance with an embodiment of the invention.
- FIG. 5 is an enlarged isometric view of a leg yoke of the leg exercise machine of FIG. 4 .
- FIG. 6 is a top plan view of the leg yoke of FIG. 5 .
- FIG. 7 is a lower isometric view of an embodiment of a pad 5 assembly of the leg exercise machine of FIG. 4 .
- FIG. 8 is an exploded, cross-sectional end view of the pad assembly of FIG. 7 taken along line 8 - 8 .
- FIG. 9 is a partial isometric view of another embodiment of a pad assembly of the leg exercise machine of FIG. 4 .
- FIG. 10 is a top plan view of the leg yoke of FIG. 5 engaged with a user's legs.
- FIG. 11 is a lower isometric view of a leg pad in accordance with an alternate embodiment of the invention.
- FIG. 12 is a partial isometric view of the leg pad of FIG. 11 installed on an exercise machine.
- FIG. 13 is a cross-sectional view of the leg pad of FIG. 11 .
- FIG. 14 is a cross-sectional view taken along line A-A of the leg pad of FIG. 13 .
- the present invention is generally directed to apparatus and methods for improved pad assemblies for exercise machines. Many specific details of certain embodiments of the invention are set forth in the following description and in FIGS. 3-14 to provide a thorough understanding of such embodiments. One skilled in the art will understand, however, that the present invention may have additional embodiments, or that the present invention may be practiced without several of the details described in the following description.
- FIG. 3 is an enlarged, partial cross-sectional view of arm and leg pad assemblies 100 , 150 in accordance with two embodiments of the invention.
- the arm and leg pad assemblies 100 , 150 are shown installed on a swing arm 48 of the arm and leg exercise machine 42 described above and shown in FIGS. 1 and 2 .
- the arm pad assembly 100 includes a backing structure 102 that is attached to the support 49 of the swing arm 48 .
- a resilient, compressible layer 104 is attached to the backing structure 102 .
- the backing structure 102 includes a non-planar (e.g. contoured) surface 106 that supports the compressible layer 104 against compression forces applied to an outer surface 108 of the compressible layer 104 .
- the backing structure 102 is an axisymmetric structure having an approximately “hour-glass” shape.
- the backing structure 102 may be formed of any suitable, sufficiently rigid material, including metal, wood, plastic, or the like.
- the compressible layer 104 may be composed of any known padding material, preferably a material that provides suitable resiliency and compressibility for extended use in a high-use exercise environment.
- the compressible layer 104 may be composed of, for example, foam or rubber padding, and may include an outer layer of neoprene, cordura, nylon, or other suitable protective covering material.
- a user engages an arm 58 against the outer surface 108 and applies a force against the arm pad assembly 100 , compressing the outer surface 108 from an uncompressed position 60 to a compressed position 62 .
- the compressible layer 104 in the uncompressed position 60 , does not have a uniform thickness between the outer surface 108 and the non-planar surface 106 of the backing structure 102 .
- the compressed position 62 the compressible layer 104 is compressed against the non-planar surface 106 of the backing structure 102 such that at least a portion 110 of the compressible layer 104 has an approximately uniform thickness between the user's arm 58 (i.e. the compressed position 62 ) and the non-planar surface 106 .
- the pressure distribution on the user's arm 58 is approximately uniform.
- the approximately uniform-thickness portion 110 need not be of an exactly uniform thickness, and that the actual thickness values of the compressible layer 104 within the approximately uniform-thickness portion 110 may vary without perceptibly changing the pressure distribution on the portion of the user's arm 58 that contacts the pad assembly 100 .
- the arm pad assembly 100 advantageously improves the pressure distribution on the user's arm 58 during an exercise. Because the non-planar surface 106 of the backing structure 102 provides an approximately uniform thickness portion 110 of the compressible layer 104 when the layer 104 is in the compressed position 60 , an improved distribution of the compression force applied by the user may be achieved.
- the pressure exerted on the user's arm 58 within the approximately uniform-thickness portion 110 may be less than that which occurs at the peak-pressure area 64 ( FIG. 2 ) of the prior art device, and may be approximately uniform over this area of the user's arm 58 . Because the arm pad assembly 100 more evenly distributes the compression forces over the part of the user's arm 58 engaged against the approximately uniform-thickness portion 110 compared with the prior art arm pad 54 , the user is less likely to experience discomfort during an exercise. Thus, the user's satisfaction with the exercise machine may be enhanced.
- the shape of the non-planar surface 106 may vary widely depending on several variables, including the anticipated shape of the portion the user's body the pad assembly is intended to engage, the anticipated forces on the pad assembly, the shape of the outer surface of the compressible layer 104 , and other characteristics of the compressible layer 104 .
- the non-planar surface 106 is concavely-shaped to provide an approximately uniform-thickness portion 110 that engages only a portion of the surface of the user's arm 58 that contacts the compressible layer 104 .
- the shape of the non-planar surface 106 may be tailored to provide an approximately uniform-thickness portion that is larger or smaller than the portion 110 shown in FIG.
- the non-planar surface 106 may have an increased or decreased concavity from that shown in FIG. 3 , and may have a varying or non-uniform concavity.
- the leg pad assembly 150 includes a backing structure 152 that has a contoured (or non-planar) surface 156 , and a compressible member 154 attached to the contoured surface 156 .
- the contoured surface 156 is shaped such that when the compressible member 154 is compressed during use, the contoured surface 156 provides an approximately uniform-thickness portion 160 of the compressible member 154 that is co-extensive with the contact surface between the user's leg 66 and the compressible member 154 .
- the pressure exerted on the user's leg 66 may be approximately uniformly distributed over the approximately uniform-thickness portion 160 , and may be less than that which occurs at the peak-pressure area 72 of the prior art leg pad 52 ( FIG. 2 ).
- the contoured surface 156 may cooperate with the non-planar outer surface (i.e. the uncompressed position 68 ) of the compressible member 154 to provide a more even pressure distribution over the relevant portion of the user's body during an exercise.
- FIG. 4 is a schematic side elevational view of a leg exercise machine 200 including a pair of pad assemblies 250 (only one visible) in accordance with another embodiment of the invention.
- the leg exercise machine 200 includes a bench 202 and a fixed support 204 positioned near an end of the bench 202 .
- a leg yoke 210 is pivotably attached to the fixed support 204 and includes pad assemblies 250 .
- a cable 205 has a first end attached to the leg yoke 210 and a second end attached to a training load 208 (e.g. a weight stack).
- the cable 205 is operatively reeved about one or more pulleys 206 so that as the leg yoke 210 is pivoted on the fixed support 204 , a tension force in the cable 205 may raise (or lower) the training load 208 .
- the overall operation of the leg exercise machine 200 is similar to the devices described in, for example, U.S. Pat. No. 5,672,143 issued to Ish, U.S. Pat. No. 5,395,295 issued to Ish, and U.S. Pat. No. 4,900,018 issued to Ish et al., which patents are incorporated herein by reference.
- FIG. 5 is an enlarged isometric view of a leg yoke 210 of the leg exercise machine 200 of FIG. 4 .
- FIG. 6 is a top elevational view of the leg yoke 210 of FIG. 5 .
- the leg yoke 210 includes a pivot arm 212 having an upper end 214 that pivotably engages the fixed support 204 .
- a base member 216 is attached to a lower end 218 of the pivot arm 212 .
- the base member 216 includes a pair of pad supports 220 that project laterally from a central portion 222 of the base member 216 and which, in this embodiment, are contoured into a concave shape.
- Each pad assembly 250 is attached to one of the pad supports 220 .
- FIG. 7 is a lower isometric view of one of the pad assemblies 250 of the leg exercise machine of FIG. 4 .
- FIG. 8 is an exploded, cross-sectional end view of the pad assembly 250 of FIG. 7 .
- the pad assembly 250 includes a contoured backing plate 252 and a layer of compressible padding 254 .
- a protective cover layer 256 extends over the compressible layer 254 and is attached to the backing plate 252 , securing the compressible layer 254 to the backing plate 252 and protecting the compressible layer 254 from sweat or damage during use.
- the compressible layer 254 may be composed of, for example, foam or rubber padding, and the protective layer 256 may be neoprene, cordura, nylon, or other suitable protective material. In the embodiment shown in FIG.
- the protective layer 256 is attached to the backing plate 252 by stitching 258 .
- a channel 260 is attached to the backing plate 252 by, for example, one or more rivets 262 ( FIG. 8 ).
- the channel 260 is sized to receive one of the pad supports 220 of the leg yoke 210 ( FIG. 6 ).
- the channel 260 may be replaced with one or more brackets 264 .
- Retaining members 266 e.g. screws, bolts, rivets, etc.
- FIG. 10 is a top elevational view of the leg yoke 210 of FIG. 5 engaged with a user's legs 270 .
- the user may be seated on the bench 202 with the user's legs 270 (shown in cross-sectional view in FIG. 10 ) engaged with the pad assemblies 250 .
- the protective layer 256 As the user's leg 270 presses against the protective layer 256 , such as during a leg curl or leg extension exercise, the compressible layer 254 is compressed against the backing plate 252 , and the protective layer 256 moves from an uncompressed position 272 to a compressed position 274 . Because the backing plate 252 is contoured, a portion 276 of the compressible layer 254 is compressed to an approximately uniform-thickness between the user's leg 270 and the contoured backing plate 252 .
- the leg pad assembly 250 may advantageously improve the pressure distribution on the user's leg 270 during an exercise. Because the contoured backing plate 252 provides an approximately uniform-thickness portion 276 of the compressible layer 254 when the compressible layer 254 is compressed to the compressed position 274 , the pressure distribution on the user's leg 270 may be approximately uniform, and an improved distribution of the compression force applied by the user may be achieved.
- the maximum pressure exerted on the user's leg 270 by the leg pad assembly 250 may be less than that which occurs in the prior art device, and may be more evenly distributed over the part of the user's leg 270 engaged against the leg pad assembly 250 . Thus, the user may be less likely to experience discomfort during an exercise, and the user's satisfaction with the leg exercise machine 200 may be enhanced.
- FIG. 11 is a lower isometric view of a leg pad 300 in accordance with an alternate embodiment of the invention.
- the leg pad 300 includes a compressible member 302 having a front surface 304 that engages with a portion of a user's body (not shown).
- the compressible member 302 also has a back surface 306 with a depression 308 formed therein. Threaded apertures 310 are disposed within the depression 308 and are attached to a stiffening strip 309 ( FIG. 13 ) embedded within the compressible member 302 .
- the stiffening strip 309 is a steel strip having a plurality of holes to improve the mechanical attachment of the compressible member 302 with the stiffening strip 309 .
- the compressible member 302 may be a unitary member formed of polyurethane or other suitably compressible material.
- the compressible member 302 may be formed of a “self-skinning” polyurethane that is molded into the desired shape by, for example, injection molding. During the molding process, the self-skinning polyurethane forms a durable, aesthetically-pleasing outer surface.
- FIG. 12 is a partial isometric view of the leg pad 300 of FIG. 11 installed on a leg yoke 210 of an exercise machine.
- a portion of the contoured pad support 220 is fittingly engaged into the depression 308 disposed in the back surface 306 of the compressible member 302 .
- Threaded members (e.g. bolts) 312 are engaged through the pad support 220 and into the threaded apertures 310 of the leg pad 300 , securing the leg pad 300 to the leg yoke 210 .
- the user's leg 270 (not shown) is pressed against the front surface 304 of the compressible member 302 .
- the compressible member 302 is compressed between the user's leg 270 and the pad support 220 .
- the pad support 220 is contoured into a desired shape, an approximately uniform-thickness portion of the compressible member 302 may be formed as described above with respect to the preceding embodiments.
- the pad support 220 may be formed into any desired shape or radius of curvature, preferably a shape or radius of curvature that provides a compressed shape of the compressible member 302 that approximately corresponds with an anticipated shape of a surface of the user's leg 270 that contacts the front surface 304 of the compressible member 302 .
- FIG. 13 is a side cross-sectional view of the leg pad 300 of FIG. 11 .
- the leg pad 300 and the contoured pad support 220 are adapted to engage against a user's shin.
- the front surface 304 has a contoured portion having a first radius of curvature R 1 in a longitudinal or lengthwise direction of the leg pad 300 , forming a front surface 304 having a concave cross-sectional shape (i.e. concave from the perspective of a portion of a user's body engaged against the front surface 304 during an exercise).
- the first radius of curvature R 1 is approximately 2.25 inches.
- the first radius of curvature R 1 may be constant or may vary along the longitudinal direction depending on the application, the type of exercise machine, and the particular area of the user's body that the front surface 304 is intended to contact.
- the pad support 220 has another contoured portion having a radius of curvature R d (signified by the bottom of the depression 308 ) which, in this embodiment, is approximately 3.00 inches.
- the pad support 220 may be separate from the leg yoke 210 , and may be separately or integrally formed with the compressible member 302 . The pad support 220 may then be attached to either the fixed or moveable portions of the frame of the exercise machine for use.
- the leg pad 300 may advantageously provide the desired pressure distribution characteristics in a simpler, more economical assembly than the other embodiments described above.
- the contoured pad support 220 forms the relatively rigid backing structure which provides the approximately uniform-thickness portion of the compressible member 302 during use of the exercise machine.
- pad assemblies 20 have been described as being engaged with portions of the user's arms or legs, it should be understood that, in alternate embodiments, pad assemblies in accordance with the invention may be readily conceived that engage other portions of a user's body.
- exercise machines having pad assemblies in accordance with the invention may be conceived wherein the pad assemblies bear against a user's shins during a leg extension exercise as disclosed in U.S. Pat. No. 4,776,587 to Carlson et al., or bear against the back of a user's calf during a leg curl exercise as disclosed in U.S. Pat. No.
- the front surface 304 of the leg pad 300 may have a convex cross-sectional shape that further improves the pressure distribution and comfort to the user during an exercise.
- FIG. 14 is a cross-sectional view taken along line A-A of the leg pad 300 of FIG. 13 .
- the front surface 304 that engages a portion of the user's body during an exercise includes a convex (or arcuate) portion 320 .
- the front surface 304 has a second radius of curvature R 2 in a lateral direction that is transversely oriented to the longitudinal (or lengthwise) direction of the leg pad 300 , forming an engagement surface that is convex in the lateral (or transverse) direction with respect to the portion of the user's body that engages the leg pad 300 during an exercise.
- the back surface 306 of the leg pad 300 has the depression 308 formed therein.
- the convex portion 320 may have a constant or varying second radius of curvature R 2 depending on the application, the type of exercise machine, and the particular area of the user's body that the convex portion 320 is intended to contact.
- the convex portion 320 is intended to engage against the user's shins, and the radius of curvature R c of the convex portion 320 is approximately 4 inches.
- the front surface 304 of the pad assembly 300 has a convex shape in a first cross-sectional direction ( FIG. 14 ), and a concave shape in a second cross-sectional direction ( FIG. 13 ).
- the first and second cross-sectional directions are orthogonally oriented.
- the front surface 304 forms a “saddle-like” shape.
- the longitudinal direction of the leg pad 300 is oriented approximately transversely to the user's shin bone.
- Pad apparatus having an engagement surface in accordance with the present invention may provide significant advantages over the prior art. Because the positional relationship between the pad apparatus (e.g. the leg pad 300 ) and the user's body may vary during an exercise, the pad apparatus having a convex portion 320 may improve or maintain the engagement between the pad apparatus and the user's body during an exercise. For example, in one particular embodiment, a user's shin region may be engaged against the convex portion 320 of the leg pad 300 to perform a leg extension exercise. As the user's leg is extended during the exercise, using prior art pad assemblies, the change in positional relationship between the user's shin and the prior art pad assembly may have caused undesirable changes in the amount of pressure experienced by the user during the exercise.
- the convex portion 320 of the front surface 304 may advantageously reduce or eliminate the undesirable change in positional relationship between the user's shin and the leg pad 300 , thereby reducing or eliminating the change in the amount of pressure on the user's shin, and improving the user's satisfaction with the leg pad 300 and with the overall exercise experience.
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Abstract
Apparatus and methods for pad assemblies for exercise machines are disclosed. In one embodiment, a pad assembly includes a compressible layer having a first surface adapted to engage a portion of a user's body, the first surface having a convex shape in a first cross-sectional direction of the compressible layer, and having a concave shape in a second cross-sectional direction of the compressible layer. The first and second cross-sectional directions may be approximately orthogonal. Similarly, at least one of the convex and concave shapes may have a constant radius of curvature.
Description
- This application is a continuation-in-part of co-pending, commonly-owned U.S. patent application Ser. No. 09/780,279 entitled “Apparatus and Methods for Pad Assemblies for Exercise Machines,” filed on Feb. 9, 2001.
- The present invention relates to apparatus and methods for pad assemblies for exercise machines, and more specifically, to pad assemblies that provide improved pressure distribution and comfort characteristics during an exercise.
- The convenience, efficiency, and safety of exercise machines are widely recognized. Many different types of exercise machines are in use today. Some models have a single exercise station, while other models include multiple exercise stations at which a user may perform one or more exercises for developing and toning different muscle groups.
- Many exercise machines include one or more pad assemblies that engage against portions of the user's body during an exercise. For example,
FIG. 1 shows anexercise machine 42 in accordance with the prior art. Thisexercise machine 42 may be used for developing arm and leg muscles, and includes asupport frame 44 with aseat 46, and a pair ofswing arms 48 rotatably coupled to thesupport frame 44. Eachswing arm 48 includes astirrup 50 for receiving one of the user's feet, aleg pad 52, and acylindrical arm pad 54. The arm andleg pads support 49 of theswing arm 48. Anelastic band 56 is attached between the twoswing arms 48. - For leg exercises, a user (not shown) may sit on the
seat 46 with the user's feet inserted into thestirrups 50, and with an outer portion of each of the user's legs engaged with theleg pads 52. As the user forces the outer portion of the user's leg against one of theleg pads 52, theswing arm 48 pivots outwardly and stretches theelastic band 56. When the force is relaxed, theelastic band 56 moves theswing arm 48 inwardly to an initial, resting position. Alternately, for arm exercises, the user places a portion of the user's arm (e.g. the forearm or hand) against one of thecylindrical arm pads 54 and applies an outwardly-directed force, causing theswing arm 48 to pivot outwardly and stretching theelastic band 56. Exercise machines of the type shown inFIG. 1 are more fully described in U.S. Pat. No. 5,409,439 issued to Lee. - Many other models of exercise machines include pad assemblies that are firmly engaged against various portions of a user's body during an exercise. For example, U.S. Pat. No. 4,776,587 to Carlson et al. discloses an exercise device having a pair of leg pad assemblies that bear against the user's shins during a leg extension exercise. Similarly, U.S. Pat. No. 4,509,746 to Mask teaches exercise machines having a flat leg pad that bears against the back of the user's calf during a leg curl exercise. Further, U.S. Pat. No. 5,716,308 to Lee teaches an exercise machine having a pair of cylindrical arm pads that engage inside surfaces of a user's arms during a chest or “fly” exercise, and in U.S. Pat. No. 5,135,457 issued to Caruso teaches leg exercise machines having pad assemblies that engage a user's shoulders and knees during a leg exercise. Many other examples of exercise machines having pad assemblies that engage portions of a user's body during an exercise are known.
- One disadvantage of prior art pad assemblies is that during an exercise, the compressive force applied by the user on the pad assembly does not remain uniformly distributed over the associated portion of the person's body. For example,
FIG. 2 shows an enlarged, partial cross-sectional view of aswing arm 48 ofFIG. 1 engaged with portions of a user's body. Specifically, the upper portion ofFIG. 2 shows a cross-sectional view of a user'sforearm 58 engaged with thearm pad 54 during an arm exercise. As the user applies force against thearm pad 54, the outer surface of thearm pad 54 is compressed from aninitial position 60 to acompressed position 62. The pressure (i.e. force per unit area) on the user'sforearm 58 during the arm exercise is greatest at a peak-pressure area (or point) 64 that typically corresponds to the most highly compressed portion of thearm pad 54. The pressure on the user'sforearm 58 decreases from the peak-pressure area 64 over those portions of the user'sforearm 58 that are spaced apart from the peak-pressure area 64 and that are in contact with less-compressed portions of thearm pad 54. - Similarly, the lower portion of
FIG. 2 shows a cross-sectional view of a user'sleg 66 engaged against theleg pad 52 during a leg exercise. During the exercise, the outer surface of theleg pad 52 is compressed from anuncompressed position 68 to acompressed position 70. As with the user'sforearm 58 in the previous example, the pressure on the user'sleg 66 is greatest at a peak-pressure area (or point) 72 usually corresponding to the most highly compressed portion of theleg pad 52, and decreases from the peak-pressure area 72 over those portions of the user'sleg 66 that are in contact with less compressed portions of theleg pad 52. Thus, even though theuncompressed position 68 of the surface of theleg pad 52 is a contoured surface adapted to approximately conform to the shape of the user'sleg 66, theleg pad 52 does not compress uniformly and the pressure distribution over the user'sleg 66 is substantially non-uniform. - Because the compression forces are not more evenly distributed over the relevant portions of the user's
forearm 58 andleg 66 during the arm and leg exercises, the user may experience discomfort, or may otherwise experience reduced satisfaction with the exercise machine. Therefore, pad assemblies that more evenly distribute the compression forces over the relevant portions of the user's body during an exercise would have utility over the prior art devices. - The present invention is directed to apparatus and methods for pad assemblies for exercise machines. In one embodiment, a pad assembly includes a compressible layer having a first surface adapted to engage a portion of a user's body, the first surface having a convex shape in a first cross-sectional direction of the compressible layer, and having a concave shape in a second cross-sectional direction of the compressible layer. The first and second cross-sectional directions may be approximately orthogonal. Similarly, at least one of the convex and concave shapes may have a constant radius of curvature. Pad apparatus in accordance with the present invention may advantageously improve the pressure experienced by a user during an exercise, thereby improving the user's satisfaction with the exercise machine.
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FIG. 1 is an isometric view of an exercise machine in accordance with the prior art. -
FIG. 2 is an enlarged, partial cross-sectional view of the exercise machine ofFIG. 1 engaged with portions of a user's body during an exercise. -
FIG. 3 is an enlarged, partial cross-sectional view of arm and leg 25 pad assemblies in accordance with two embodiments of the invention. -
FIG. 4 is a schematic side elevational view of a leg exercise machine having a pad assembly in accordance with an embodiment of the invention. -
FIG. 5 is an enlarged isometric view of a leg yoke of the leg exercise machine ofFIG. 4 . -
FIG. 6 is a top plan view of the leg yoke ofFIG. 5 . -
FIG. 7 is a lower isometric view of an embodiment of a pad 5 assembly of the leg exercise machine ofFIG. 4 . -
FIG. 8 is an exploded, cross-sectional end view of the pad assembly ofFIG. 7 taken along line 8-8. -
FIG. 9 is a partial isometric view of another embodiment of a pad assembly of the leg exercise machine ofFIG. 4 . -
FIG. 10 is a top plan view of the leg yoke ofFIG. 5 engaged with a user's legs. -
FIG. 11 is a lower isometric view of a leg pad in accordance with an alternate embodiment of the invention. -
FIG. 12 is a partial isometric view of the leg pad ofFIG. 11 installed on an exercise machine. -
FIG. 13 is a cross-sectional view of the leg pad ofFIG. 11 . -
FIG. 14 is a cross-sectional view taken along line A-A of the leg pad ofFIG. 13 . - The present invention is generally directed to apparatus and methods for improved pad assemblies for exercise machines. Many specific details of certain embodiments of the invention are set forth in the following description and in
FIGS. 3-14 to provide a thorough understanding of such embodiments. One skilled in the art will understand, however, that the present invention may have additional embodiments, or that the present invention may be practiced without several of the details described in the following description. -
FIG. 3 is an enlarged, partial cross-sectional view of arm andleg pad assemblies leg pad assemblies swing arm 48 of the arm andleg exercise machine 42 described above and shown inFIGS. 1 and 2 . As shown in the upper portion ofFIG. 3 , thearm pad assembly 100 includes abacking structure 102 that is attached to thesupport 49 of theswing arm 48. A resilient,compressible layer 104 is attached to thebacking structure 102. Thebacking structure 102 includes a non-planar (e.g. contoured)surface 106 that supports thecompressible layer 104 against compression forces applied to anouter surface 108 of thecompressible layer 104. - In this embodiment, the
backing structure 102 is an axisymmetric structure having an approximately “hour-glass” shape. Thebacking structure 102 may be formed of any suitable, sufficiently rigid material, including metal, wood, plastic, or the like. Similarly, thecompressible layer 104 may be composed of any known padding material, preferably a material that provides suitable resiliency and compressibility for extended use in a high-use exercise environment. Thecompressible layer 104 may be composed of, for example, foam or rubber padding, and may include an outer layer of neoprene, cordura, nylon, or other suitable protective covering material. - In operation, a user engages an
arm 58 against theouter surface 108 and applies a force against thearm pad assembly 100, compressing theouter surface 108 from anuncompressed position 60 to acompressed position 62. In this embodiment, in theuncompressed position 60, thecompressible layer 104 does not have a uniform thickness between theouter surface 108 and thenon-planar surface 106 of thebacking structure 102. In thecompressed position 62, thecompressible layer 104 is compressed against thenon-planar surface 106 of thebacking structure 102 such that at least a portion 110 of thecompressible layer 104 has an approximately uniform thickness between the user's arm 58 (i.e. the compressed position 62) and thenon-planar surface 106. In the approximately uniform-thickness portion 110, the pressure distribution on the user'sarm 58 is approximately uniform. - In general, it should be noted that the approximately uniform-thickness portion 110 need not be of an exactly uniform thickness, and that the actual thickness values of the
compressible layer 104 within the approximately uniform-thickness portion 110 may vary without perceptibly changing the pressure distribution on the portion of the user'sarm 58 that contacts thepad assembly 100. Thearm pad assembly 100 advantageously improves the pressure distribution on the user'sarm 58 during an exercise. Because thenon-planar surface 106 of thebacking structure 102 provides an approximately uniform thickness portion 110 of thecompressible layer 104 when thelayer 104 is in thecompressed position 60, an improved distribution of the compression force applied by the user may be achieved. The pressure exerted on the user'sarm 58 within the approximately uniform-thickness portion 110 may be less than that which occurs at the peak-pressure area 64 (FIG. 2 ) of the prior art device, and may be approximately uniform over this area of the user'sarm 58. Because thearm pad assembly 100 more evenly distributes the compression forces over the part of the user'sarm 58 engaged against the approximately uniform-thickness portion 110 compared with the priorart arm pad 54, the user is less likely to experience discomfort during an exercise. Thus, the user's satisfaction with the exercise machine may be enhanced. - The shape of the
non-planar surface 106 may vary widely depending on several variables, including the anticipated shape of the portion the user's body the pad assembly is intended to engage, the anticipated forces on the pad assembly, the shape of the outer surface of thecompressible layer 104, and other characteristics of thecompressible layer 104. In the embodiment shown inFIG. 3 , for example, thenon-planar surface 106 is concavely-shaped to provide an approximately uniform-thickness portion 110 that engages only a portion of the surface of the user'sarm 58 that contacts thecompressible layer 104. In alternate embodiments, the shape of thenon-planar surface 106 may be tailored to provide an approximately uniform-thickness portion that is larger or smaller than the portion 110 shown inFIG. 3 , including a portion that is co-extensive with the entire surface of the user'sarm 58 that contacts thecompressible layer 104. Thenon-planar surface 106 may have an increased or decreased concavity from that shown inFIG. 3 , and may have a varying or non-uniform concavity. - Referring again to
FIG. 3 , theleg pad assembly 150 includes abacking structure 152 that has a contoured (or non-planar)surface 156, and acompressible member 154 attached to the contouredsurface 156. In this embodiment, thecontoured surface 156 is shaped such that when thecompressible member 154 is compressed during use, thecontoured surface 156 provides an approximately uniform-thickness portion 160 of thecompressible member 154 that is co-extensive with the contact surface between the user'sleg 66 and thecompressible member 154. The pressure exerted on the user'sleg 66 may be approximately uniformly distributed over the approximately uniform-thickness portion 160, and may be less than that which occurs at the peak-pressure area 72 of the prior art leg pad 52 (FIG. 2 ). In addition, thecontoured surface 156 may cooperate with the non-planar outer surface (i.e. the uncompressed position 68) of thecompressible member 154 to provide a more even pressure distribution over the relevant portion of the user's body during an exercise. -
FIG. 4 is a schematic side elevational view of aleg exercise machine 200 including a pair of pad assemblies 250 (only one visible) in accordance with another embodiment of the invention. Theleg exercise machine 200 includes abench 202 and afixed support 204 positioned near an end of thebench 202. Aleg yoke 210 is pivotably attached to the fixedsupport 204 and includespad assemblies 250. Acable 205 has a first end attached to theleg yoke 210 and a second end attached to a training load 208 (e.g. a weight stack). Thecable 205 is operatively reeved about one ormore pulleys 206 so that as theleg yoke 210 is pivoted on the fixedsupport 204, a tension force in thecable 205 may raise (or lower) thetraining load 208. Except for the particular characteristics of theleg yoke 210 and thepad assemblies 250, which will be described below, the overall operation of theleg exercise machine 200 is similar to the devices described in, for example, U.S. Pat. No. 5,672,143 issued to Ish, U.S. Pat. No. 5,395,295 issued to Ish, and U.S. Pat. No. 4,900,018 issued to Ish et al., which patents are incorporated herein by reference. -
FIG. 5 is an enlarged isometric view of aleg yoke 210 of theleg exercise machine 200 ofFIG. 4 .FIG. 6 is a top elevational view of theleg yoke 210 ofFIG. 5 . As shown inFIGS. 5 and 6 , theleg yoke 210 includes apivot arm 212 having anupper end 214 that pivotably engages the fixedsupport 204. Abase member 216 is attached to alower end 218 of thepivot arm 212. Thebase member 216 includes a pair of pad supports 220 that project laterally from acentral portion 222 of thebase member 216 and which, in this embodiment, are contoured into a concave shape. Eachpad assembly 250 is attached to one of the pad supports 220. -
FIG. 7 is a lower isometric view of one of thepad assemblies 250 of the leg exercise machine ofFIG. 4 .FIG. 8 is an exploded, cross-sectional end view of thepad assembly 250 ofFIG. 7 . Thepad assembly 250 includes a contouredbacking plate 252 and a layer ofcompressible padding 254. Aprotective cover layer 256 extends over thecompressible layer 254 and is attached to thebacking plate 252, securing thecompressible layer 254 to thebacking plate 252 and protecting thecompressible layer 254 from sweat or damage during use. Thecompressible layer 254 may be composed of, for example, foam or rubber padding, and theprotective layer 256 may be neoprene, cordura, nylon, or other suitable protective material. In the embodiment shown inFIG. 7 , theprotective layer 256 is attached to thebacking plate 252 by stitching 258. Achannel 260 is attached to thebacking plate 252 by, for example, one or more rivets 262 (FIG. 8 ). Thechannel 260 is sized to receive one of the pad supports 220 of the leg yoke 210 (FIG. 6 ). As shown inFIG. 9 , thechannel 260 may be replaced with one ormore brackets 264. Retaining members 266 (e.g. screws, bolts, rivets, etc.) secure thepad support 220 to thebacking plate 252 of thepad assembly 250. -
FIG. 10 is a top elevational view of theleg yoke 210 ofFIG. 5 engaged with a user'slegs 270. In operation, the user may be seated on thebench 202 with the user's legs 270 (shown in cross-sectional view inFIG. 10 ) engaged with thepad assemblies 250. As the user'sleg 270 presses against theprotective layer 256, such as during a leg curl or leg extension exercise, thecompressible layer 254 is compressed against thebacking plate 252, and theprotective layer 256 moves from anuncompressed position 272 to acompressed position 274. Because thebacking plate 252 is contoured, aportion 276 of thecompressible layer 254 is compressed to an approximately uniform-thickness between the user'sleg 270 and the contouredbacking plate 252. - The
leg pad assembly 250 may advantageously improve the pressure distribution on the user'sleg 270 during an exercise. Because the contouredbacking plate 252 provides an approximately uniform-thickness portion 276 of thecompressible layer 254 when thecompressible layer 254 is compressed to thecompressed position 274, the pressure distribution on the user'sleg 270 may be approximately uniform, and an improved distribution of the compression force applied by the user may be achieved. The maximum pressure exerted on the user'sleg 270 by theleg pad assembly 250 may be less than that which occurs in the prior art device, and may be more evenly distributed over the part of the user'sleg 270 engaged against theleg pad assembly 250. Thus, the user may be less likely to experience discomfort during an exercise, and the user's satisfaction with theleg exercise machine 200 may be enhanced. -
FIG. 11 is a lower isometric view of aleg pad 300 in accordance with an alternate embodiment of the invention. In this embodiment, theleg pad 300 includes acompressible member 302 having afront surface 304 that engages with a portion of a user's body (not shown). Thecompressible member 302 also has aback surface 306 with adepression 308 formed therein. Threadedapertures 310 are disposed within thedepression 308 and are attached to a stiffening strip 309 (FIG. 13 ) embedded within thecompressible member 302. In one embodiment, thestiffening strip 309 is a steel strip having a plurality of holes to improve the mechanical attachment of thecompressible member 302 with thestiffening strip 309. - In the
leg pad 300 shown inFIG. 11 , thecompressible member 302 may be a unitary member formed of polyurethane or other suitably compressible material. Preferably, thecompressible member 302 may be formed of a “self-skinning” polyurethane that is molded into the desired shape by, for example, injection molding. During the molding process, the self-skinning polyurethane forms a durable, aesthetically-pleasing outer surface. -
FIG. 12 is a partial isometric view of theleg pad 300 ofFIG. 11 installed on aleg yoke 210 of an exercise machine. In this embodiment, a portion of the contouredpad support 220 is fittingly engaged into thedepression 308 disposed in theback surface 306 of thecompressible member 302. Threaded members (e.g. bolts) 312 are engaged through thepad support 220 and into the threadedapertures 310 of theleg pad 300, securing theleg pad 300 to theleg yoke 210. - In operation, the user's leg 270 (not shown) is pressed against the
front surface 304 of thecompressible member 302. Thecompressible member 302 is compressed between the user'sleg 270 and thepad support 220. Because thepad support 220 is contoured into a desired shape, an approximately uniform-thickness portion of thecompressible member 302 may be formed as described above with respect to the preceding embodiments. Thepad support 220 may be formed into any desired shape or radius of curvature, preferably a shape or radius of curvature that provides a compressed shape of thecompressible member 302 that approximately corresponds with an anticipated shape of a surface of the user'sleg 270 that contacts thefront surface 304 of thecompressible member 302. -
FIG. 13 is a side cross-sectional view of theleg pad 300 ofFIG. 11 . In this embodiment, theleg pad 300 and the contouredpad support 220 are adapted to engage against a user's shin. As best shown inFIG. 13 , thefront surface 304 has a contoured portion having a first radius of curvature R1 in a longitudinal or lengthwise direction of theleg pad 300, forming afront surface 304 having a concave cross-sectional shape (i.e. concave from the perspective of a portion of a user's body engaged against thefront surface 304 during an exercise). In one particular embodiment, the first radius of curvature R1 is approximately 2.25 inches. It will be appreciated that the first radius of curvature R1 may be constant or may vary along the longitudinal direction depending on the application, the type of exercise machine, and the particular area of the user's body that thefront surface 304 is intended to contact. As further shown inFIG. 13 , thepad support 220 has another contoured portion having a radius of curvature Rd (signified by the bottom of the depression 308) which, in this embodiment, is approximately 3.00 inches. - Of course, as described above, many alternate embodiments may be conceived having varying radii of curvature for the front surface and the pad support (or backing surface). Generally, for most applications for pad assemblies for exercise machines, it is anticipated that the radii of curvature of these surfaces may typically vary within the range from about 1.5 inches to about 7.0 inches for engagement with most commonly contacted portions of a user's body, although greater or lesser radii may be employed. Furthermore, in alternate embodiments, the
pad support 220 may be separate from theleg yoke 210, and may be separately or integrally formed with thecompressible member 302. Thepad support 220 may then be attached to either the fixed or moveable portions of the frame of the exercise machine for use. - Because the
leg pad 300 does not require abacking plate 252, theleg pad 300 may advantageously provide the desired pressure distribution characteristics in a simpler, more economical assembly than the other embodiments described above. The contouredpad support 220 forms the relatively rigid backing structure which provides the approximately uniform-thickness portion of thecompressible member 302 during use of the exercise machine. - Although the above-described embodiments of pad assemblies 20 have been described as being engaged with portions of the user's arms or legs, it should be understood that, in alternate embodiments, pad assemblies in accordance with the invention may be readily conceived that engage other portions of a user's body. For example, exercise machines having pad assemblies in accordance with the invention may be conceived wherein the pad assemblies bear against a user's shins during a leg extension exercise as disclosed in U.S. Pat. No. 4,776,587 to Carlson et al., or bear against the back of a user's calf during a leg curl exercise as disclosed in U.S. Pat. No. 4,509,746 to Mask, or bear against inside surfaces of a user's arms during a chest or “fly” exercises as taught in U.S. Pat. No. 5,716,308 to Lee, or bear against a user's shoulders or knees as taught in U.S. Pat. No. 5,135,457. Other examples of exercise machines having pad assemblies in accordance with the teachings of the present disclosure may be conceived.
- In yet another aspect, the
front surface 304 of theleg pad 300 may have a convex cross-sectional shape that further improves the pressure distribution and comfort to the user during an exercise. For example,FIG. 14 is a cross-sectional view taken along line A-A of theleg pad 300 ofFIG. 13 . As shown inFIG. 14 , in this embodiment, thefront surface 304 that engages a portion of the user's body during an exercise includes a convex (or arcuate)portion 320. More specifically, thefront surface 304 has a second radius of curvature R2 in a lateral direction that is transversely oriented to the longitudinal (or lengthwise) direction of theleg pad 300, forming an engagement surface that is convex in the lateral (or transverse) direction with respect to the portion of the user's body that engages theleg pad 300 during an exercise. As described above, theback surface 306 of theleg pad 300 has thedepression 308 formed therein. Again, it will be appreciated that theconvex portion 320 may have a constant or varying second radius of curvature R2 depending on the application, the type of exercise machine, and the particular area of the user's body that theconvex portion 320 is intended to contact. For example, in one particular embodiment, theconvex portion 320 is intended to engage against the user's shins, and the radius of curvature Rc of theconvex portion 320 is approximately 4 inches. - Thus, as shown in
FIGS. 13 and 14 , thefront surface 304 of thepad assembly 300 has a convex shape in a first cross-sectional direction (FIG. 14 ), and a concave shape in a second cross-sectional direction (FIG. 13 ). In this embodiment, the first and second cross-sectional directions are orthogonally oriented. Thus, thefront surface 304 forms a “saddle-like” shape. In this embodiment, when a user's shin is engaged against thefront surface 304, the longitudinal direction of theleg pad 300 is oriented approximately transversely to the user's shin bone. - Pad apparatus having an engagement surface in accordance with the present invention may provide significant advantages over the prior art. Because the positional relationship between the pad apparatus (e.g. the leg pad 300) and the user's body may vary during an exercise, the pad apparatus having a
convex portion 320 may improve or maintain the engagement between the pad apparatus and the user's body during an exercise. For example, in one particular embodiment, a user's shin region may be engaged against theconvex portion 320 of theleg pad 300 to perform a leg extension exercise. As the user's leg is extended during the exercise, using prior art pad assemblies, the change in positional relationship between the user's shin and the prior art pad assembly may have caused undesirable changes in the amount of pressure experienced by the user during the exercise. Using theleg pad 300 having theconvex portion 320, however, theconvex portion 320 of thefront surface 304 may advantageously reduce or eliminate the undesirable change in positional relationship between the user's shin and theleg pad 300, thereby reducing or eliminating the change in the amount of pressure on the user's shin, and improving the user's satisfaction with theleg pad 300 and with the overall exercise experience. - The detailed descriptions of the above embodiments are not exhaustive descriptions of all embodiments contemplated by the inventors to be within the scope of the invention. Indeed, persons skilled in the art will recognize that certain elements of the above-described embodiments may variously be combined or eliminated to create further embodiments, and such further embodiments fall within the scope and teachings of the invention. It will also be apparent to those of ordinary skill in the art that the above-described embodiments may be combined in whole or in part to create additional embodiments within the scope and teachings of the invention.
- Thus, although specific embodiments of, and examples for, the invention are described herein for illustrative purposes, various equivalent modifications are possible within the scope of the invention, as those skilled in the relevant art will recognize. The teachings provided herein can be applied to other apparatus and methods for pad assemblies for exercise machines, and not just to the embodiments described above and shown in the accompanying figures. Accordingly, the scope of the invention should be determined from the following claims.
Claims (18)
1. A pad assembly for an exercise machine, comprising:
a compressible layer having a first surface adapted to engage a portion of a user's body, the first surface having a convex shape in a first cross-sectional direction of the compressible layer, and having a concave shape in a second cross-sectional direction of the compressible layer.
2. The pad assembly of claim 1 , wherein the first and second cross-sectional directions are approximately orthogonal.
3. The pad assembly of claim 1 , wherein at least one of the convex and concave shapes has a constant radius of curvature.
4. The pad assembly of claim 1 , wherein the second cross-sectional direction is adapted to be approximately orthogonal to a user's shin bone during an exercise.
5. The pad assembly of claim 1 , wherein the compressible layer further includes a second surface substantially opposite from the first surface, the pad assembly further comprising a backing member having a non-planar surface engaged with the second surface of the compressible layer.
6. The pad assembly of claim 5 wherein the backing member comprises a contoured support attached to the second surface.
7. The pad assembly of claim 5 wherein the non-planar surface comprises a contoured portion that provides a compressed shape of the compressible layer that approximately corresponds with an anticipated shape of the portion of the user's body.
8. The pad assembly of claim 5 wherein the non-planar surface of the backing member is shaped to provide an approximately uniform-thickness portion of the compressible layer when a compression force is applied to the first surface during an exercise.
9. A pad assembly for an exercise machine, comprising:
a layer of compressible padding having a first surface adapted to engage a portion of a user's body and a second surface opposite from the first surface, the first surface having a convex shape in a first cross-sectional direction of the layer, and having a concave shape in a second cross-sectional direction of the layer; and
a backing structure attached to the layer of compressible padding and having a backing surface proximate the second surface, the backing surface being shaped to provide an approximately uniform-thickness portion of the layer of compressible padding when a compression force is applied to the first surface.
10. The pad assembly of claim 9 , wherein the first and second cross-sectional directions are approximately orthogonal.
11. The pad assembly of claim 9 , wherein at least one of the convex and concave shapes has a constant radius of curvature.
12. The pad assembly of claim 9 , wherein the second cross-sectional direction is adapted to be approximately orthogonal to a user's shin bone during an exercise.
13. The pad assembly of claim 9 wherein the backing member comprises a contoured support attached to the second surface.
14. An exercise machine, comprising:
a support frame having a fixed portion and a moveable portion moveably coupled to the fixed portion;
a load operatively coupled to the moveable portion;
at least one pad assembly attached to the support frame, the pad assembly comprising:
a layer of compressible padding having a first surface adapted to engage a portion of a user's body and a second surface opposite from the first surface, the first surface having a convex shape in a first cross-sectional direction of the layer, and having a concave shape in a second cross-sectional direction of the layer; and
a backing structure attached to the layer of compressible padding and having a backing surface proximate the second surface, the backing surface being shaped to provide an approximately uniform-thickness portion of the layer of compressible padding when a compression force is applied to the first surface.
15. The exercise machine of claim 14 , wherein the first and second cross-sectional directions are approximately orthogonal.
16. The exercise machine of claim 14 , wherein at least one of the convex and concave shapes has a constant radius of curvature.
17. The exercise machine of claim 14 , wherein the second cross-sectional direction is adapted to be approximately orthogonal to a user's shin bone during an exercise.
18. The exercise machine of claim 14 , wherein the backing member comprises a contoured support attached to the second surface.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
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US11/623,248 US20070179028A1 (en) | 2001-02-09 | 2007-01-15 | Apparatus and Methods for Pad Assemblies for Exercise Machines |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
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US09/780,279 US20020111255A1 (en) | 2001-02-09 | 2001-02-09 | Apparatus and methods for pad assemblies for exercise machines |
US11/623,248 US20070179028A1 (en) | 2001-02-09 | 2007-01-15 | Apparatus and Methods for Pad Assemblies for Exercise Machines |
Related Parent Applications (1)
Application Number | Title | Priority Date | Filing Date |
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US09/780,279 Continuation-In-Part US20020111255A1 (en) | 2001-02-09 | 2001-02-09 | Apparatus and methods for pad assemblies for exercise machines |
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US20070179028A1 true US20070179028A1 (en) | 2007-08-02 |
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Family Applications (1)
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US11/623,248 Abandoned US20070179028A1 (en) | 2001-02-09 | 2007-01-15 | Apparatus and Methods for Pad Assemblies for Exercise Machines |
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US (1) | US20070179028A1 (en) |
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US20080051268A1 (en) * | 2006-08-24 | 2008-02-28 | Vectra Fitness, Inc. | Exercise Assemblies Having Self-Adjusting Pad Devices |
US20090084574A1 (en) * | 2007-09-28 | 2009-04-02 | Kim Gene Balfour | Poly(arylene ether) composition and its use in the fabrication of extruded articles and coated wire |
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US5267930A (en) * | 1993-01-06 | 1993-12-07 | Henes Richard W | Exercise machine employing improved leg and foot exercising fixture |
US5306223A (en) * | 1993-01-25 | 1994-04-26 | Martinez Richard J | Abdominal exercise apparatus |
US5336152A (en) * | 1993-06-15 | 1994-08-09 | Jeffrey S. Winslow | Exercise apparatus and method of using same |
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US5562579A (en) * | 1995-02-28 | 1996-10-08 | Legacy International, Inc. | Leg lift unit |
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US4357011A (en) * | 1981-06-08 | 1982-11-02 | Paramount Health Equipment Corporation | Adapting structure for exercise machines |
US4725056A (en) * | 1985-11-27 | 1988-02-16 | Lumex, Inc. | Leg stabilization for a trunk extension/flexion test, rehabilitation and exercise machine |
US4938477A (en) * | 1989-04-12 | 1990-07-03 | Kuervers Douglas T | Wrist engaging exercise device |
US5120052A (en) * | 1990-08-10 | 1992-06-09 | Layne Evans | Abdominal exercise apparatus that provides for increased elongation of the abdominal muscles |
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US20080051268A1 (en) * | 2006-08-24 | 2008-02-28 | Vectra Fitness, Inc. | Exercise Assemblies Having Self-Adjusting Pad Devices |
US7846075B2 (en) * | 2006-08-24 | 2010-12-07 | Vectra Fitness, Inc. | Exercise assemblies having self-adjusting pad devices |
US20090084574A1 (en) * | 2007-09-28 | 2009-04-02 | Kim Gene Balfour | Poly(arylene ether) composition and its use in the fabrication of extruded articles and coated wire |
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AS | Assignment |
Owner name: VECTRA FITNESS, INC., WASHINGTON Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:ISH III, A. BUELL;REEL/FRAME:019156/0935 Effective date: 20070410 |
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STCB | Information on status: application discontinuation |
Free format text: ABANDONED -- FAILURE TO RESPOND TO AN OFFICE ACTION |