US4739986A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Foot, ankle and lower leg exerciser
Assignee: Individual
•
Filing: 1987-06-05
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Granted: 1988-04-26
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Expires: 2007-06-05
Abstract
Abstract The exerciser described herein for strengthening or rehabilitating the feet, ankles and lower legs of the user comprises two foot pedals supported on a vertical bar screwed into the support for the pedals and having a ball joint at the bottom thereof which fits into a cavity in the base support and thereby permits a swivelling action. Between the pedals and the base support there is also a supporting spring for which the compression can be increased or decreased by turning the threaded part of the bar one way or the other way in a threaded opening in the underside of the pedal supporter.
Inventors
- 👤 Edward J. Kucharik
- 👤 Mitchel E. Thaxter
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 06:54
CPC Classifications
A; A63; A63B; A63B23/00; A63B23/035; A63B23/04; A63B23/08; A63B22/00; A63B22/18; A63B21/00; A63B21/02; A63B21/023; A63B21/045
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
255 words
Apparatus for the rehabilitation and strenghtening of the muscles and tendons in a person's feet, ankles and lower legs comprising (a) two separate pedal means on which a user may place his feet, one foot on each pedal means; (b) strapping means by which the feet may be fastened to said pedal means; (c) two pedal supporting means to which said two pedal means are affixed, each said pedal supporting means having a threaded opening in the underside thereof; (d) a base supporting means having two receptacle cavities in the upper portion thereof; (e) two supporting means each having threads at one end and having at the other end a rounded shape adapted to fit into one of said receptacle cavities of said base supporting means, said threads on said bar supporting means being adapted to fit into and engage the threaded opening in one of said pedal supporting means; and two spiral springs positioned between said pedal supporting means and said base supporting means, whereby rotation of the pedal means in one direction around said bar supporting means decreases the distance between said pedal means and said base supporting means thereby compressing said spring, and rotation of the pedal means in the other direction around said bar supporting means increase the distance between said pedal means and said base supporting means thereby decreasing the compression of said spring, in which apparatus there is a restraining means which prevents the removal of said rounded shape end of said bar supporting means from said receptacle cavity.
Claim 2
Dependent Claim
255 words
Apparatus for the rehabilitation and strenghtening of the muscles and tendons in a person's feet, ankles and lower legs comprising (a) two separate pedal means on which a user may place his feet, one foot on each pedal means; (b) strapping means by which the feet may be fastened to said pedal means; (c) two pedal supporting means to which said two pedal means are affixed, each said pedal supporting means having a threaded opening in the underside thereof; (d) a base supporting means having two receptacle cavities in the upper portion thereof; (e) two supporting means each having threads at one end and having at the other end a rounded shape adapted to fit into one of said receptacle cavities of said base supporting means, said threads on said bar supporting means being adapted to fit into and engage the threaded opening in one of said pedal supporting means; and two spiral springs positioned between said pedal supporting means and said base supporting means, whereby rotation of the pedal means in one direction around said bar supporting means decreases the distance between said pedal means and said base supporting means thereby compressing said spring, and rotation of the pedal means in the other direction around said bar supporting means increase the distance between said pedal means and said base supporting means thereby decreasing the compression of said spring, in which apparatus there is a restraining means which prevents the removal of said rounded shape end of said bar supporting means from said receptacle cavity.
Claim 3
Dependent Claim
91 words
The apparatus of claim 1 in which said base supporting means includes a lower plate having said receptacle cavity therein and said restraining means comprise an upper plate having an opening therein having a diameter smaller than the diameter of said rounded shape of said bar supporting means, said lower and upper plates having means for fastening themselves to each other with the said rounded shape of said bar supporting means being contained therebetween with the upper portion of said bar supporting means extending through the opening in said upper plate.
Claim 4
Dependent Claim
20 words
The apparatus of claim 2 which also comprises a base to which both said upper and lower plate are fastened.
References Cited (Backward Citations)
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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) | 1991-04-26 | 1991-10-26 | 1992-04-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1995-04-26 | 1995-10-26 | 1996-04-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1999-04-26 | 1999-10-26 | 2000-04-26 | $7700.00 | Window Closed / Lapsed |