Valves and valve actuation – Electrically actuated valve – Remote or follow-up control system for electrical actuator
Patent
1994-12-20
1996-11-05
Look, Edward K.
Valves and valve actuation
Electrically actuated valve
Remote or follow-up control system for electrical actuator
4304, 4623, E03D 510
Patent
active
055708692
ABSTRACT:
A self-calibrating fluid flow control apparatus for use with a fluid flow source is provided. A detection area is defined wherein the interposition of an object therein causes a control device to activate the fluid flow source. A calibrating device is configured to continuously define, at a predetermined rate, a steady state boundary of the detection area, wherein the steady state boundary conforms to objects interposed within said detection area so that a new detection area is defined which is free of interposed objects capable of activating the fluid flow source. An object left indefinitely within the detection area will not, therefore, cause the control device to indefinitely activate the fluid flow source nor, after deactivation by a timing mechanism, prevent the fluid flow source's subsequent reactivation.
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AquaStat, Philipp Research & Development Labs, Inc., Lutz, Floriday, "Introducing a Revolutionary New Way to Automatically Turn Faucets On and Off . . . " (no date).
Illinois Master Plumber, Industry News, "Chicago Faucets Launches Eagle Eye Electronic Faucets," Mar. 1994, p. 47.
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Coyne & Delany, Co., Charlotteville, Virginia, Brochure regarding The Delany Sensor-Faucets (from Mar. 7, 1994 meeting of ASPE).
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Diaz Alexander R.
Roush Ronald L.
Look Edward K.
T & S Brass and Bronze, Inc.
Verdier Christopher
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