Object-sensor-based flow-control system employing fiber-optic signal transmission
US5984262A · kind A · utility
92Cited by
12References
2Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jul 31, 1996 |
| Grant date | Nov 16, 1999 |
| Priority date | — |
| Expiry date | Jul 31, 2016 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE03C1/057
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
A control circuit (56) for responding to infrared light from a target region and operating an electric valve (54) in response is disposed at a protected location remote from the target region. It detects the presence of objects by means of light conducted to it by a fiber-optic cable (32).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.