Pressure differential switch device
US4084072A · kind A · utility
5Cited by
7References
5Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | May 12, 1976 |
| Grant date | Apr 11, 1978 |
| Priority date | — |
| Expiry date | May 12, 1996 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01H35/247
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A pressure differential switch device having a flexible diaphragm between two chambers subject to differential pressures and a permanent magnet movable with the diaphragm against a biasing force when pressure differences occur in the chambers; the magnet moving to a position in which the magnetic field of the magnet actuates the contacts of a reed switch assembly.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.