Mercury type tilt switch
US4099040A · kind A · utility
19Cited by
7References
6Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Mar 30, 1976 |
| Grant date | Jul 4, 1978 |
| Priority date | — |
| Expiry date | Mar 30, 1996 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01H2300/016
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A tilt switch of the mercury type wherein at least one electrode extends into the switch chamber containing a mercury-like globule which is movable back and forth between a first position resulting in the switch being in a state of conductivity or non-conductivity when it is oriented within a first solid angle and the opposite state when it is oriented outside that solid angle. The chamber is of at least generally dry wall construction and may be of small size for use in activating a LED or LCD display of a battery-powered wristwatch.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.