Pressure responsive switch
US4469922A · kind A · utility
3Cited by
3References
8Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | May 27, 1982 |
| Grant date | Sep 4, 1984 |
| Priority date | — |
| Expiry date | May 27, 2002 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01H35/32
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A pressure responsive switch having an atmospheric pressure chamber including electrical contacts which are sealed hermetically by a flexible pleated cover whereby the flexible pleated cover deforms in accordance with the expansion and contraction of the atmosphere in the atmospheric pressure chamber. The alteration of the temperature surrounding the atmospheric chamber provides for the expansion and contraction of the atmosphere with the atmospheric pressure chamber and the pleated cover maintains the atmospheric pressure constant within the pressure chamber.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.