F - Mech Eng,Light,Heat,Weapons – 16 – K
Patent
F - Mech Eng,Light,Heat,Weapons
16
K
F16K 31/04 (2006.01)
Patent
CA 2094278
2094278 9222766 PCTABS00018 A feedback, motor-operated valve (1) includes a valve element (13) movably mounted in the casing (5) to control flow. The valve element (13) is adapted for screw-like movement into and out of sealing engagement with the valve seat by a valve stem rotatably mounted in the valve casing. A reversible motor-driven actuating device for the valve device is provided including a reversible drive motor (23) having an output shaft (31) and drive gear (33) which can be driven together in both a clockwise and counterclockwise direction for turning the valve element. An electromechanical feedback device (45) is provided which is operably connected to the driven shaft. A device (53) freely rotatable with the drive shaft for providing a controlled amount of overturning of the motor drive shaft following full closure of the valve element is provided which simultaneously stores a portion of the drive energy expended in the overturning.
Ridout & Maybee Llp
Tice Bill
LandOfFree
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