Differential pressure switch with sealed contacts
US5132500A · kind A · utility
7Cited by
11References
17Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Feb 11, 1991 |
| Grant date | Jul 21, 1992 |
| Priority date | — |
| Expiry date | Feb 11, 2011 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01H35/34
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A differential pressure switch has a main switch body divided into three chambers by means of two diaphragms, thereby sealing the center chamber that contains a snap-action switch. The two diaphragms are mechanically connected by a strut that can move only along a single line of motion, so that movement of one diaphragm is transmitted to the other. Movement of the strut is coupled to an actuator of the snap action to produce the desired switching action.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.