Tilt sensor and method for making the same
US7950162B2 · kind B2 · utility
4Cited by
11References
11Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Oct 23, 2009 |
| Grant date | May 31, 2011 |
| Priority date | — |
| Expiry date | Oct 23, 2029 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01C2009/066
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A tilt sensor includes a light emitting element and two light receiving elements accommodated in a case. The case is formed with an inner space in which a rolling member is provided in a freely movable manner by the pulling force of gravity. A cover plate is fixed to the case to close the inner space. The cover plate is provided with an irregular, inner ceiling surface that is exposed to the inner surface so as to come into sliding contact with the rolling member.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.