Patent US3992004A successfully refreshed from Google Patents.
US3992004A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Spring biased thigh and pelvic muscle toning apparatus
Assignee: Individual
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Filing: 1974-12-30
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Granted: 1976-11-16
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Expires: 1994-12-30
Abstract
Abstract An apparatus for enabling the user to divaricate simultaneously his legs while overcoming or attempting to overcome an antagonistic resilient force constantly urging his legs towards each other without exceeding a predetermined amplitude comprises in combination two vertical bearing members between which the user can dispose his ankles and exert an outward pressure by use of the outer malleoli, adjustable resilient springs constantly tending to prevent the movement of said vertical bearing members away from each other, and adjustable stops for limiting the maximum horizontal movement of said vertical bearing members away from each other. A second stop member is provided to limit the movements of the bearing members toward each other. The bearing members are mounted on the ends of telescoping members. The bearing members are associated with graduated scales to show the extent of travel of the bearing members.
Inventors
- 👤 Andre Feron
- 👤 Claude Bochurberg
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 15:52
CPC Classifications
A; A63; A63B; A63B23/00; A63B23/035; A63B23/04; A63B23/0482; A63B23/0488; A63B21/00; A63B21/02; A63B21/055; A63B21/0552
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
221 words
Apparatus for improving the musculature of the thighs and pelvis by simultaneously divaricating the two legs of the previously stretched-out user lying on the floor, in opposition to a force constantly urging the legs towards each other, comprising, in combination an elongated base member adapted to be laid directly upon the floor and to constitute the lower frame structure of the apparatus, a user being postionable on a floor at right angles to said elongated member with his legs passing over said elongated member, a pair of spaced apart collapsible members rigidly mounted and disposed above and extending substantially parallel to said elongated base member, each said collapsible member having a pressure pad mounted thereon, each of said collapsible members having spring means mounted therein for biasing said pressure pads towards each other, stop means for limiting the movement of said pressure pads towards each other while under the biasing force of the spring means, so that a user can fit his or her two knees, feet or ankles therebetween in contact with said pressure pads, abutment means on the elongated base member for limiting the lateral sliding movement of each one of said pressure pads with respect to the elongated base member, and each said spring means having an adjustment means for varying the biasing force of the spring means.
Claim 2
Dependent Claim
221 words
Apparatus for improving the musculature of the thighs and pelvis by simultaneously divaricating the two legs of the previously stretched-out user lying on the floor, in opposition to a force constantly urging the legs towards each other, comprising, in combination an elongated base member adapted to be laid directly upon the floor and to constitute the lower frame structure of the apparatus, a user being postionable on a floor at right angles to said elongated member with his legs passing over said elongated member, a pair of spaced apart collapsible members rigidly mounted and disposed above and extending substantially parallel to said elongated base member, each said collapsible member having a pressure pad mounted thereon, each of said collapsible members having spring means mounted therein for biasing said pressure pads towards each other, stop means for limiting the movement of said pressure pads towards each other while under the biasing force of the spring means, so that a user can fit his or her two knees, feet or ankles therebetween in contact with said pressure pads, abutment means on the elongated base member for limiting the lateral sliding movement of each one of said pressure pads with respect to the elongated base member, and each said spring means having an adjustment means for varying the biasing force of the spring means.
Claim 3
Dependent Claim
127 words
Apparatus according to claim 1, in which said collapsible members are respective telescopic tubes, each said spring means acting on said pressure pads being mounted in a respective one of said telescopic tubes and reacts at one end against its associated pressure pad and at the opposite end against a nut engaging a screw-threaded rod rotatably solid with an external knurled knob, said nut being adapted to slide without rotating within its tube so that rotating said knurled knob and therefore the screw-threaded rod solid therewith will cause said nut to slide in one or the other direction according as said knob is rotated in one or the other direction, said nut with said rod and said knurled knob constituting at least part of said adjustment means.
Claim 4
Dependent Claim
54 words
Apparatus according to claim 2, wherein a lug rigid with each nut extends through a longitudinal slot at the lower portion of its tube, and the outer end of said lug is movable on a corresponding first graduated scale of which the division lines correspond to the momentary compression of the associated spring means.
Claim 5
Dependent Claim
27 words
Apparatus according to claim 3, wherein said abutment means comprises a plurality of longitudinally adjustable stop means each associated with a scale similar to said graduated scale.
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) | 1979-11-16 | 1980-05-17 | 1980-11-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-11-16 | 1984-05-17 | 1984-11-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-11-16 | 1988-05-17 | 1988-11-16 | $7700.00 | Window Closed / Lapsed |