Optical device for monitoring critical speeds of a rotating member
US4387785A · kind A · utility
7Cited by
16References
12Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Aug 27, 1980 |
| Grant date | Jun 14, 1983 |
| Priority date | — |
| Expiry date | Aug 27, 2000 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01H9/006
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
An optical device for monitoring the speed of a rotating member characterized by a reflector mounted on a surface of the rotating member adjacent the periphery to travel in a circular path, a light source creating an input beam and either directing it at along a given angle of incidence at a point on the circular path of the reflector or through a waveguide at the point, a second waveguide arranged on the path of light reflected by the reflector and conducting the reflected light to an opto-acoustical transducer which converts the reflected light pulses into sound.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.