Relay switch apparatus
US4668927A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Mar 6, 1986 |
| Grant date | May 26, 1987 |
| Priority date | — |
| Expiry date | Mar 6, 2006 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01H1/08
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A multi-positional mercury switch (1, 2) for use with miniature relays. The mercury switch apparatus has mercury wettable magnetic contact structures (11, 12, 13, 21, 22) supported in a sealed envelope member (10, 20) supporting the magnetic contact structures with free ends thereof positioned to engage or disengage each other in response to a magnetic field generated by current appearing in a coil (410) externally surrounding the envelope member. A mercury wettable member (3, 15, 23, 24) having a porous construction for holding mercury is mounted on ones of the magnetic contact structures within the sealed envelope member for wetting the magnetic contact structures.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.