Patent US5066003A successfully refreshed from Google Patents.
US5066003A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Leg curl exercise machine
Assignee: Brunswick Corp
•
Filing: 1990-09-12
•
Granted: 1991-11-19
•
Expires: 2010-09-12
Abstract
Abstract A leg curl exercise machine includes a frame, a platform supported by the frame along a vertical midplane and a pair of levers pivotally connected to the frame in front of the platform. The forward ends of the levers are adapted to hold removable weights and, during performance of a leg curl exercise, are adapted to be acted upon by the legs of an exerciser supported on the platform. The levers pivot along outer planes of movement that diverge from the front of the frame and tilt inwardly toward the top of the frame, thereby coupling the force applied by the legs against separate weight resistances that move through planes that naturally accommodate the musculoskeletal make-up of a person.
Inventors
- 👤 Gary A. Jones
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 14:10
CPC Classifications
A; A63; A63B; A63B23/00; A63B23/035; A63B23/03516; A63B23/03533; A63B21/00; A63B21/06; A63B21/0615; A63B21/08; A63B21/40; A63B21/4041; A63B21/4047; A63B23/03508; A63B23/04; A63B23/0494; A63B2208/00; A63B2208/02; A63B2208/0242; A63B2208/0257; A63B2225/00; A63B2225/30
Claims Analysis
Total Claims: 30
Claim 1
Independent Claim
89 words
A leg curl exercise machine comprising: a frame; a platform secured to the frame along a vertical midplane; a lever pivotally connected to the frame in front of the platform, the lever adapted to hold at least one removable weight at a forward, lower end thereof and adapted to be pivoted upwardly by the back of the leg of an exerciser supported on the platform during the performance of a leg curl, the lever being pivotal in a plane that is non-parallel with respect to the central vertical plane.
Claim 2
Dependent Claim
89 words
A leg curl exercise machine comprising: a frame; a platform secured to the frame along a vertical midplane; a lever pivotally connected to the frame in front of the platform, the lever adapted to hold at least one removable weight at a forward, lower end thereof and adapted to be pivoted upwardly by the back of the leg of an exerciser supported on the platform during the performance of a leg curl, the lever being pivotal in a plane that is non-parallel with respect to the central vertical plane.
Claim 3
Dependent Claim
23 words
The leg curl exercise machine of claim 1 wherein the non-parallel plane of pivotal lever movement diverges from the front of the frame.
Claim 4
Dependent Claim
16 words
The leg curl exercise machine of claim 2 wherein the angle of divergence is about 4°.
Claim 5
Dependent Claim
24 words
The leg curl exercise machine of claim 1 wherein the non-parallel plane of pivotal movement tilts inwardly towards a top portion of the frame.
Claim 6
Dependent Claim
22 words
The leg curl exercise machine of claim 4 wherein the plane of pivotal movement tilts inwardly at an angle of about 2°.
Claim 7
Dependent Claim
30 words
The leg curl exercise machine of claim 1 wherein the non-parallel plane of movement diverges from the front of the frame and tilts inwardly toward the top of the frame.
Claim 8
Dependent Claim
21 words
The leg curl exercise machine of claim 1 and further comprising: a counterweight connected to a rearward end of the lever.
Claim 9
Dependent Claim
93 words
The leg curl exercise machine of claim 1 and further comprising: a support rod having an outer end for holding removable weights, an opposite end of the support rod extending inwardly toward the vertical midplane; a connector attached to an inner end of the support rod and extending forwardly and upwardly therefrom; and a hub and pad assembly connected to an upper end of the connector, the hub adapted to be acted upon by the back of the leg of an exerciser supported on the platform during the performance of a leg curl.
Claim 10
Dependent Claim
26 words
The leg curl exercise machine of claim 1 wherein the pivotal lever has an initial, at rest, position at an angle of about 25° from vertical.
Claim 11
Dependent Claim
24 words
The leg curl exercise machine of claim 1 and further comprising: means for selectively varying an initial, at rest, angle of the pivot lever.
Claim 12
Dependent Claim
14 words
The leg curl exercise machine of claim 1 wherein the platform includes two sections.
Claim 13
Dependent Claim
26 words
The leg curl exercise machine of claim 11 wherein a forward section of the platform declines forwardly and a rearward section of the platform declines rearwardly.
Claim 14
Dependent Claim
21 words
The leg curl exercise machine of claim 12 wherein the forwardly and rearwardly declinging angles are about 10° and 5°, respectively.
Claim 15
Dependent Claim
85 words
A leg curl exercise machine comprising: a frame; a platform secured to the frame along a vertical midplane; a pair of levers pivotally connected to the frame in front of the platform, each lever having a forward end adapted to hold at least one removable weight and adapted to be pivoted upwardly by one leg of an exerciser supported on the platform during the performance of a leg curl, the levers being pivotal in outer planes that are non-parallel with respect to the vertical midplane.
Claim 16
Dependent Claim
85 words
A leg curl exercise machine comprising: a frame; a platform secured to the frame along a vertical midplane; a pair of levers pivotally connected to the frame in front of the platform, each lever having a forward end adapted to hold at least one removable weight and adapted to be pivoted upwardly by one leg of an exerciser supported on the platform during the performance of a leg curl, the levers being pivotal in outer planes that are non-parallel with respect to the vertical midplane.
Claim 17
Dependent Claim
21 words
The leg curl exercise machine of claim 14 wherein each of the outer planes diverges from the front of the frame.
Claim 18
Dependent Claim
21 words
The leg curl exercise machine of claim 15 wherein each of the outer planes diverges at an angle of about 4°.
Claim 19
Dependent Claim
22 words
The leg curl exercise machine of claim 14 wherein each of the outer planes tilt inwardly toward the top of the frame.
Claim 20
Dependent Claim
22 words
The leg curl exercise machine of claim 17 wherein each of the outer planes tilt inwardly at an angle of about 2°.
Claim 21
Dependent Claim
110 words
The leg curl exercise machine of claim 14 and further comprising: a pair of support rods, each support rod connected to one of the levers and oriented perpendicular to the outer plane of pivotal movement of the respective lever, each support rod having an outer end adapted to hold one or more removable weights; a pair of connectors, each connector secured to an inner end of a support rod and extending forwardly and upwardly therefrom; and a pair of pads, each pad connected to a forward end of a connector, the pads adapted to be acted upon by an exerciser supported on the platform during performance of a leg curl.
Claim 22
Dependent Claim
25 words
The leg curl exercise machine of claim 19 wherein each connector is angularly displaced from its respective lever by an angle of less than 90°.
Claim 23
Dependent Claim
20 words
The leg curl exercise machine of claim 20 wherein each connector is angularly displaced at an angle of about 77°.
Claim 24
Dependent Claim
44 words
The leg curl exercise machine of claim 14 and further comprising: a pair of counterweights, each counterweight connected to an upper rearward end of a lever and adapted to substantially counterbalance a forward end of the lever when no removable weights are held thereon.
Claim 25
Dependent Claim
27 words
The leg curl exercise machine of claim 14 wherein each lever has an initial, at rest, position of about 25° from vertical with its respective outer plane.
Claim 26
Dependent Claim
30 words
The leg curl exercise machine of claim 14 and further comprising: means for selectively varying an initial, at rest, angle of each of the levers within its respective outer plane.
Claim 27
Dependent Claim
81 words
A leg curl exercise machine comprising: a frame; a platform supported by the frame along a vertical midplane; and a pair of pivotal levers, each lever having a forward end adapted to hold at least one removable weight and adapted to be acted upon by the leg of an exerciser supported on the platform during the performance of a leg curl, each lever adapted to pivot in an outer plane of movement that diverges from a forward end of the machine.
Claim 28
Dependent Claim
81 words
A leg curl exercise machine comprising: a frame; a platform supported by the frame along a vertical midplane; and a pair of pivotal levers, each lever having a forward end adapted to hold at least one removable weight and adapted to be acted upon by the leg of an exerciser supported on the platform during the performance of a leg curl, each lever adapted to pivot in an outer plane of movement that diverges from a forward end of the machine.
Claim 29
Dependent Claim
20 words
The leg curl exercise machine of claim 25 wherein the outer planes tilt inwardly toward a top of the frame.
Claim 30
Dependent Claim
21 words
The leg curl exercise machine of claim 25 wherein the platform includes a forwardly declining section and a rearwardly declining section.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1994-11-18 | 1995-05-20 | 1995-11-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1998-11-18 | 1999-05-20 | 1999-11-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2002-11-18 | 2003-05-20 | 2003-11-19 | $7700.00 | Window Closed / Lapsed |