Switch unit
US4336429A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Oct 14, 1980 |
| Grant date | Jun 22, 1982 |
| Priority date | — |
| Expiry date | Oct 14, 2000 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01H23/02
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A snap-action switch unit uses as its movable element a spring strip (23) mounted in a frame (20) such that the strip is bowed. A rod or the like (22) across the strip at its middle constrains the strip so that one half is bowed away from a flat surface (21) while the other half is adjacent to and roughly parallel with the flat surface. PA1 On the opposite side of the spring strip (23) to the flat surface (21) there is a rocker (28) depression of which flips the spring strip (23) between two stable states. Integral with the strip (23) there are contact-bearing tongues (26, 27) which co-operate with stationary contacts on the supporting surface (21). PA1 Alternatively the spring strip carries a transverse strip carrying two contact buttons which co-operate with stationary contacts.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.