Fluid handling – Systems – Programmer or timer
Patent
1991-03-06
1991-11-05
Cohan, Alan
Fluid handling
Systems
Programmer or timer
4304, 25112904, 251 29, 251 3004, E03D 308, F16K 3100
Patent
active
050624539
ABSTRACT:
An on demand, non-contact sensor controlled flush valve actuation system includes a flush valve between a water supply and a plumbing fixture. An actuator for the flush valve includes a moveable piston in fluid communication with a control water inlet, with a control water conduit carrying water from the flush valve through a solenoid operated control valve to the actuator assembly. A radiation sensing/detecting unit generates a first control signal in response to the return reflection of infrared radiation. A timer receives the first control signal and, in response thereto, generates a second control signal of a predetermined duration which activates the solenoid. When the solenoid is activated, a portion of the pressurized supply water flows into the actuator assembly and against a piston therein, with the piston moving to operate a trip mechanism for the flush valve.
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Ball Christopher J.
Becker Allen R.
Saadi Robert E.
Steffan John
Cohan Alan
Zurn Industries, Inc.
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