US3921975A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Leg muscle exercise apparatus
Assignee: Individual
•
Filing: 1974-09-06
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Granted: 1975-11-25
•
Expires: 1994-09-06
Abstract
Abstract A leg muscle exercising apparatus, including a pair of pads resiliently retained in laterally spaced relation in position for a person using the apparatus to position the pads between his knees and force them together against the resilient force to exercise his leg and groin muscles. A lazy tong device connected to the resilient arms is adapted to engage the user''s abdomen to enable the user to apply greater resistance to movement of the pads, as desired.
Inventors
- 👤 Robert H Pridgen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 08:25
CPC Classifications
A; A63; A63B; A63B21/00; A63B21/15; A63B21/157; A63B21/06; A63B21/151; A63B21/154; A63B21/40; A63B21/4001; A63B21/4011; A63B21/4015; A63B21/4027; A63B21/4033; A63B21/4035; A63B21/4041; A63B21/4043; A63B23/00; A63B23/035; A63B23/03575; A63B23/04; A63B23/0482; A63B23/0488; A63B23/12; A63B23/1209; A63B21/02; A63B21/023; A63B21/045; A63B21/0455; A63B21/062; A63B21/0626; A63B21/0628; A63B21/4037; A63B2208/00; A63B2208/02; A63B2208/0228; A63B2208/0238
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
185 words
A leg muscle exercising apparatus comprising, in combination, a pair of elongated bars joining together at one end in a generally V-shaped configuration, resilient spring means urging said bars away from one another, a pair of leg-engaging members mounted one on each said bar adjacent the free ends thereof in opposed relation to one another and in position to engage the opposed inner portions of a user''s legs when in a sitting position and having his out-stretched legs spread wide apart, said leg-engaging members being adapted to be pushed toward one another by the force of the user''s legs against the resilient force of said spring and to resiliently urge said user''s legs back to their wide spread position, and an articulated lever mechanism operable by the user for selectively iNcreasing the resistance of said spring, said lever mechanism including arm means engaging each of said opposed bars intermediate their respective ends, and actuating means engaging the user''s torso and operably connected with said arm means for applying an outward force to said bars to thereby increase the resistance to defection thereof toward one another.
Claim 2
Dependent Claim
185 words
A leg muscle exercising apparatus comprising, in combination, a pair of elongated bars joining together at one end in a generally V-shaped configuration, resilient spring means urging said bars away from one another, a pair of leg-engaging members mounted one on each said bar adjacent the free ends thereof in opposed relation to one another and in position to engage the opposed inner portions of a user''s legs when in a sitting position and having his out-stretched legs spread wide apart, said leg-engaging members being adapted to be pushed toward one another by the force of the user''s legs against the resilient force of said spring and to resiliently urge said user''s legs back to their wide spread position, and an articulated lever mechanism operable by the user for selectively iNcreasing the resistance of said spring, said lever mechanism including arm means engaging each of said opposed bars intermediate their respective ends, and actuating means engaging the user''s torso and operably connected with said arm means for applying an outward force to said bars to thereby increase the resistance to defection thereof toward one another.
Claim 3
Dependent Claim
39 words
The leg muscle exercising apparatus according to claim 1 further comprising a frame, an elongated upwardly extending pivot post on said frame and means on said bars and spring means for pivotally supporting said spring member on said post.
Claim 4
Dependent Claim
39 words
The leg muscle exercising apparatus as defined in claim 2 wherein said leg-engaging members comprise resilient pads mounted one on each of the free ends of each said bar and positioned to engage the user''s thighs adjacent his knees.
Claim 5
Dependent Claim
131 words
A leg muscle exercising apparatus comprising, in combination, an elongated resilient spring member in the form of an elongated bar formed into a generally V-shaped configuration, a pair of leg-engaging members mounted in opposed relation one on each end of said bar in position to engage the opposed inner portions of a user''s legs when in a sitting position and having his outstretched legs spread wide apart, said leg-engaging members being adapted to be pushed toward one another by the force of the user''s legs against the resilient force of said spring and to resiliently urge said user''s legs back to their wide spread position, and means manually operable by the person using the apparatus for selectively increasing the resistance of said spring while using the apparatus to exercise his legs.
Claim 6
Dependent Claim
131 words
A leg muscle exercising apparatus comprising, in combination, an elongated resilient spring member in the form of an elongated bar formed into a generally V-shaped configuration, a pair of leg-engaging members mounted in opposed relation one on each end of said bar in position to engage the opposed inner portions of a user''s legs when in a sitting position and having his outstretched legs spread wide apart, said leg-engaging members being adapted to be pushed toward one another by the force of the user''s legs against the resilient force of said spring and to resiliently urge said user''s legs back to their wide spread position, and means manually operable by the person using the apparatus for selectively increasing the resistance of said spring while using the apparatus to exercise his legs.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-11-24 | 1979-05-26 | 1979-11-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-11-24 | 1983-05-26 | 1983-11-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-11-24 | 1987-05-26 | 1987-11-25 | $7700.00 | Window Closed / Lapsed |