Electronic motorized zone valve
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Apr 16, 2002
Issued Date -
N/A
app pub date -
Aug 28, 2000
filing date -
May 15, 1998
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
An valve actuator in a hydronic heating and cooling system includes a motor for changing the position of a valve, a switch for switching power to the motor, and a sensor for detecting the arrival of the valve at a desired position and for stopping the motor without using a mechanical stop. The motor's power source includes a capacitive power source which can be used to drive the motor under low-power conditions. A worm gear is used in the drive train, and combined with a clutch assembly to permit the valve to be operated manually.
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Family
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Cited Art Landscape
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