Electronic foot pedal having improved biasing arrangement
US5237891A · kind A · utility
28Cited by
19References
3Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Apr 16, 1992 |
| Grant date | Aug 24, 1993 |
| Priority date | — |
| Expiry date | Apr 16, 2012 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T74/20894
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
An electronic foot pedal for outputting an electrical signal proportional to the degree a treadle is pivoted. The electronic foot pedal has an improved spring arrangement for yieldably biasing the treadle toward its home position. Dual springs are provided, independently mounted and supplementary to each other. Each spring has an adequate biasing force to urge the treadle to its home position. The springs are of a ribbon-like material that are wound into a flat spiral. The springs are subjected mainly to bending forces and have flexure as the treadle is pivoted to its pivotal limits.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.