Passive sensors for automatic faucets
US8276878B2 · kind B2 · utility
Inventors
Key dates
| Filing date | Jun 5, 2010 |
| Grant date | Oct 2, 2012 |
| Priority date | — |
| Expiry date | Jun 20, 2030 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE03C1/057
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
The present invention is directed to novel optical sensors and novel methods for sensing optical radiation. The novel optical sensors and the novel optical sensing methods are used, for example, for controlling the operation of automatic faucets and flushers. The novel sensors and flow controllers (including control electronics and valves) require only small amounts of electrical power for sensing users of bathroom facilities, and thus enable battery operation for many years. A passive optical sensor includes a light detector sensitive to ambient (room) light for controlling the operation of automatic faucets or automatic bathroom flushers.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.