Key switch with snap-action contact and resilient actuator
US4316066A · kind A · utility
9Cited by
9References
22Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Nov 28, 1980 |
| Grant date | Feb 16, 1982 |
| Priority date | — |
| Expiry date | Nov 28, 2000 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01H2235/024
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A key switch for data-entry keyboards and the like, the switch having a housing supporting a snap-action spring with a movable contact positioned adjacent a fixed contact on the housing. An actuator leaf spring is anchored at one end to the housing, and has a free end which is movable to drive the snap-action spring between first and second bi-stable positions to operate the switch. A keystem is slidably supported in the housing, and has a portion in contact with the actuator spring so depression of the keystem displaces the actuator spring to drive the snap-action spring.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.