Passive sensors for automatic faucets and bathroom flushers
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United States of America Patent
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Jul 8, 2008
Grant Date -
Dec 28, 2006
app pub date -
Jun 3, 2005
filing date -
Dec 4, 2001
priority date (Note) -
In Force
status (Latency Note)
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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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Family
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