Vented membrane switch with contaminant scavenger
US4365130A · kind A · utility
132Cited by
7References
5Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Dec 28, 1981 |
| Grant date | Dec 21, 1982 |
| Priority date | — |
| Expiry date | Dec 28, 2001 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01H2229/002
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A membrane switch, which is vented to equalize air pressures within and outside the switch, includes a scavenger material in the vent passage selected to react with airborne contaminants and prevent or substantially reduce their passage into the area of the switch contacts.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.