Patent US4502680A successfully refreshed from Google Patents.
US4502680A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Foot exerciser
Assignee: Individual
•
Filing: 1982-12-23
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Granted: 1985-03-05
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Expires: 2002-12-23
Abstract
Abstract An improved foot exercising device having pedals pivotally secured to a support. Leg exercise can be obtained by regularly pumping pedals up and down. A control system registers number of pumping motions and signals user when an inadequate number of motions has been registered in a particular time period. A control regulates the amplitude of motion to ensure adequate contraction and relaxation of the leg muscles. The combination satisfies the physiological requirements to prevent dependent edema in seated users. A wheelchair application is disclosed.
Inventors
- 👤 Alvin S. Blum
- 👤 James W. Dickey, Jr.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 13:30
CPC Classifications
A; A63; A63B; A63B23/00; A63B23/035; A63B23/04; A63B23/08; A63B23/085; A63B71/00; A63B71/0009; A63B2071/0018; A63B2208/00; A63B2208/12; A63B2220/00; A63B2220/17
Claims Analysis
Total Claims: 22
Claim 1
Independent Claim
185 words
An exerciser for improving fluid circulation, comprising: at least one foot pedal means; support means; joining means joining said pedal means to said support means pivotally to permit up and down motion strokes of the foot by flexion and extension of the ankle joint through contraction and relaxation of lower leg muscles; stroke counting means connected to said pedal means for accumulating information on the number of said strokes as accumulated stroke number information; reductive timing means connected to said counting means for reducing said accumulated stroke number information at a time related rate; signal means connected to said counting means for signalling to a user when the combined operation of said stroke counting means and said reductive timing means indicates that the number of said strokes that have been performed in a predetermined time interval is below a predetermined amount, said combined operation of said stroke counting means and said reductive timing means accumulating said motion strokes as they occur only up to a predetermined maximum number of accumulated strokes and reducing said accumulated stroke number of information at a predetermined rate of strokes.
Claim 2
Dependent Claim
185 words
An exerciser for improving fluid circulation, comprising: at least one foot pedal means; support means; joining means joining said pedal means to said support means pivotally to permit up and down motion strokes of the foot by flexion and extension of the ankle joint through contraction and relaxation of lower leg muscles; stroke counting means connected to said pedal means for accumulating information on the number of said strokes as accumulated stroke number information; reductive timing means connected to said counting means for reducing said accumulated stroke number information at a time related rate; signal means connected to said counting means for signalling to a user when the combined operation of said stroke counting means and said reductive timing means indicates that the number of said strokes that have been performed in a predetermined time interval is below a predetermined amount, said combined operation of said stroke counting means and said reductive timing means accumulating said motion strokes as they occur only up to a predetermined maximum number of accumulated strokes and reducing said accumulated stroke number of information at a predetermined rate of strokes.
Claim 3
Dependent Claim
43 words
The invention of claim 1, further comprising pedal motion amplitude regulating means interconnected between said pedal means and said stroke counting means, said pedal motion amplitude regulating means preventing a pedal stroke from accumulating unless it exceeds a predetermined amplitude of pedal motion.
Claim 4
Dependent Claim
54 words
The invention of claim 1, further comprising pedal motion amplitude regulating means connected to said pedal means, said pedal motion amplitude regulating means mechanically preventing up pedal motion until down pedal motion has passed a predetermined amplitude and preventing down pedal motion until up pedal motion has passed a predetermined amplitude of pedal motion.
Claim 5
Dependent Claim
16 words
The invention of claim 3, wherein said pedal motion amplitude regulating means includes a ratchet mechanism.
Claim 6
Dependent Claim
23 words
The invention of claim 3, including clamping means connected to said support means for clamping said exerciser to the pedal of a wheelchair.
Claim 7
Dependent Claim
28 words
The invention of claim 3, wherein said support means comprises an anterior support member of a wheelchair and said pedal means also serves as the wheelchair rest pedal.
Claim 8
Dependent Claim
14 words
The invention of claim 3, wherein said pedal means provides adjustable angle footrest means.
Claim 9
Dependent Claim
19 words
The invention of claim 1, wherein said stroke counting means and said reductive timing means are digital electronic circuits.
Claim 10
Dependent Claim
19 words
The invention of claim 1, wherein said stroke counting means and said reductive timing means are analog electronic circuits.
Claim 11
Dependent Claim
17 words
The invention of claim 1, wherein said stroke counting means and said reductive timing means are pneumatic.
Claim 12
Dependent Claim
9 words
The invention of claim 1, including audible signal means.
Claim 13
Dependent Claim
9 words
The invention of claim 1, including visible signal means.
Claim 14
Dependent Claim
24 words
The invention of claim 1, including spring loaded power switch means to disconnect power to said invention when foot weight is not resting thereon.
Claim 15
Dependent Claim
13 words
The invention of claim 1, wherein said joining means is a resilient member.
Claim 16
Dependent Claim
23 words
The invention of claim 14, wherein said resilient member is formed as an integral part of said pedal means and said support means.
Claim 17
Dependent Claim
136 words
A foot exerciser for improving circulation in the lower leg comprising: at least one foot pedal means; support means; joining means pivotally joining said pedal means to said support means to permit up and down motion strokes of the foot by flexion and extension of the ankle joint through contraction and relaxation of lower leg muscles; pedal motion amplitude regulating means mechanically preventing up pedal motion until down pedal motion has passed a predetermined amplitude of motion and preventing down pedal motion until up pedal motion has passed a predetermined amplitude of motion, said pedal motion amplitude regulating means thereby providing an adjustable angle footrest means when not in motion and also ensuring sufficient muscle action to maintain lymphatic circulation in the lower leg when the foot is put through said up and down motion strokes.
Claim 18
Dependent Claim
136 words
A foot exerciser for improving circulation in the lower leg comprising: at least one foot pedal means; support means; joining means pivotally joining said pedal means to said support means to permit up and down motion strokes of the foot by flexion and extension of the ankle joint through contraction and relaxation of lower leg muscles; pedal motion amplitude regulating means mechanically preventing up pedal motion until down pedal motion has passed a predetermined amplitude of motion and preventing down pedal motion until up pedal motion has passed a predetermined amplitude of motion, said pedal motion amplitude regulating means thereby providing an adjustable angle footrest means when not in motion and also ensuring sufficient muscle action to maintain lymphatic circulation in the lower leg when the foot is put through said up and down motion strokes.
Claim 19
Dependent Claim
23 words
The invention of claim 16, including clamping means connected to said base means for clamping said exerciser to the pedal of a wheelchair.
Claim 20
Dependent Claim
28 words
The invention of claim 16, wherein said support means comprises an anterior support member of a wheelchair and said pedal means also serves as the wheelchair rest pedal.
Claim 21
Dependent Claim
13 words
The invention of claim 16, wherein said joining means is a resilient member.
Claim 22
Dependent Claim
23 words
The invention of claim 19, wherein said resilient member is formed as an integral part of said pedal means and said support means.
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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) | 1988-03-04 | 1988-09-03 | 1989-03-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1992-03-04 | 1992-09-03 | 1993-03-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1996-03-04 | 1996-09-03 | 1997-03-05 | $7700.00 | Window Closed / Lapsed |