Pressure switch
US6194678A · kind A · utility
16Cited by
5References
20Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | May 9, 2000 |
| Grant date | Feb 27, 2001 |
| Priority date | — |
| Expiry date | May 9, 2020 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01H35/34
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A pressure switch with improved sealing of an airtight chamber, and improved electrical characteristics reducing chattering, increasing response rate, and minimizing the pressure necessary for activation. The pressure switch includes an upper substrate with a diaphragm readily deformed by an applied stress, a lower substrate overlapped with the upper substrate to form the airtight chamber, a contact electrically switched in response to the deformation of the diaphragm, and a sealing member continuously surrounding the airtight chamber, disposed between the first and second substrate, and hermetically sealing the airtight chamber.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.