US4006441A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pedal-operated volume control
Assignee: Individual
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Filing: 1975-12-24
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Granted: 1977-02-01
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Expires: 1995-12-24
Abstract
Abstract A rotary potentiometer is actuated by a pedal movement converted to rotary motion by a cable-sheave arrangement in which the sheave has a varying radius to its peripheral surface. The sheave is preferably mounted on the potentiometer shaft in an angular relationship that causes a minimum rotation of the shaft for a given pedal movement at a minimum resistance condition of the potentiometer.
Inventors
- 👤 Philip C. Goodrich
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 18:20
CPC Classifications
H; H01; H01C; H01C10/00; H01C10/14; Y; Y10; Y10T; Y10T74/00; Y10T74/20; Y10T74/20528; Y10T74/20576; Y10T74/20888
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
108 words
A controller for an electrical circuit, said controller including a frame, an actuator moveably mounted on said frame, rotary potentiometer means having a control shaft and secured to said frame, and cable means operably associating said actuator and said potentiometer whereby movement of said actuator induces rotation of said potentiometer shaft, wherein the improvement comprises: sheave means secured to said control shaft, said sheave means having a hole receiving said control shaft, and having a peripheral cable-receiving surface disposed at a varying radius from the axis of said hole providing a gradient to the rate of rotation of said shaft with respect to the movement of said actuator.
Claim 2
Dependent Claim
108 words
A controller for an electrical circuit, said controller including a frame, an actuator moveably mounted on said frame, rotary potentiometer means having a control shaft and secured to said frame, and cable means operably associating said actuator and said potentiometer whereby movement of said actuator induces rotation of said potentiometer shaft, wherein the improvement comprises: sheave means secured to said control shaft, said sheave means having a hole receiving said control shaft, and having a peripheral cable-receiving surface disposed at a varying radius from the axis of said hole providing a gradient to the rate of rotation of said shaft with respect to the movement of said actuator.
Claim 3
Dependent Claim
31 words
A controller as defined in claim 1, wherein said actuator is a pedal pivotally mounted on said frame, and said cable-receiving surface is cylindrical and eccentric with respect to said hole.
Claim 4
Dependent Claim
36 words
A controller as defined in claim 1, wherein said cable means is tangent to said cable-receiving surface at a position adjacent the maximum radius thereof when said potentiometer means is set for a minimum electrical resistance.
Claim 5
Dependent Claim
36 words
A controller as defined in claim 3, wherein said cable means is tangent to said cable-receiving surface at a position adjacent to the minimum radius thereof when said potentiometer means is set for maximum electrical resistance.
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) | 1980-02-01 | 1980-08-02 | 1981-02-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-02-01 | 1984-08-02 | 1985-02-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-02-01 | 1988-08-02 | 1989-02-01 | $7700.00 | Window Closed / Lapsed |