Passive sensors for automatic faucets and bathroom flushers

Details Passive sensors for automatic faucets and bathroom flushers Passive sensors for automatic faucets and bathroom flushers

2008-07-05

2010-06-08

Fristoe, Jr., John K (Department: 3753)

Valves and valve actuation

Electrically actuated valve

Remote or follow-up control system for electrical actuator

C004S304000, C004S623000

Reexamination Certificate

active

07731154

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.

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