Position activated mercury switch
US7002482B2 · kind B2 · utility
3Cited by
7References
16Claims
0Family size
Inventor
Key dates
| Filing date | Apr 23, 2004 |
| Grant date | Feb 21, 2006 |
| Priority date | — |
| Expiry date | Jul 30, 2024 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01H29/22
- WIPO fieldControl
- WIPO sectorInstruments
Abstract
A mercury switch which is actuated only on a specific movement of an individual by design of an internal cavity of the switch to control movement of a mercury ball into and out of engagement with two electrical contacts. The internal cavity has a truncated cone for receipt of the mercury ball, a surface of revolution sloping outward from the opening of the truncated cone and an interruption ramp in this surface of revolution to guide the mercury ball into the truncated cone for actuation of a switch when a critical angle of the switch has been exceeded.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.