Valve position sensor
US5691813A · kind A · utility
4Cited by
2References
9Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jul 12, 1995 |
| Grant date | Nov 25, 1997 |
| Priority date | — |
| Expiry date | Jul 12, 2015 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01D5/30
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A position sensor for monitoring the position of the valve element of a valve is described. The sensor comprises reflector means associated with the valve element and arranged to reflect energy, for example visible light, from a suitable source such that when the valve element is in a first position the reflected energy is incident upon a detector. Movement of the valve element away from the first position results in the reflected light no longer being incident upon the detector. The invention further relates to a valve including such a position sensor.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.