Foot pedal for varying resistance in an electrical circuit
US4639710A · kind A · utility
Inventors
Key dates
| Filing date | Jan 24, 1986 |
| Grant date | Jan 27, 1987 |
| Priority date | — |
| Expiry date | Jan 24, 2006 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T74/20888
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A foot pedal for varying resistance in an electrical circuit having an on-off control is formed having a base member with an actuator foot plate cover pivotally mounted thereto; an array of circular members is positioned in a circular recess between said base member and cover; said array including a pair of electrode discs spaced by a compressible resistance disc; said compressible resistance disc comprising a flexible elastomer with electro-conductive particulate dispersed therein; said array including an actuating plate which has a spherical joint connection with the actuator foot plate cover; an operator's foot pressure compresses the compressible disc to decrease resistance while a spring opens the pedal device when the operator's foot pressure is removed.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.