Valves and valve actuation – Electrically actuated valve – Rotary electric actuator
Patent
1991-06-17
1992-08-11
Rosenthal, Arnold
Valves and valve actuation
Electrically actuated valve
Rotary electric actuator
25112912, 25112904, 74411, 744248VA, 185 40R, F16K 3104
Patent
active
051372576
ABSTRACT:
A feedback, motor-operated valve, including a valve casing having an inlet, an outlet and a valve seat operably positioned therebetween, and further including a valve element movably mounted in the casing to control flow between the inlet and the outlet, the valve element 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 and extending through the casing exterior thereof, a reversible motor for actuating the valve including a reversible drive motor having an output shaft and drive gear which can be driven together in both a clockwise and counterclockwise direction for turning the valve element, a driven shaft interposed the motor drive shaft and the valve stem and connected to the valve stem, including a driven gear for engagement with the drive gear to effect turning of the valve element from turning the motor drive shaft, an electro-mechanical feedback operably connected to the driven shaft for providing an electric signal output in response to the position of the valve element with respect to the valve seat, and a device to provide a controlled amount of overturning of the motor drive shaft following full closure of the valve element against the valve seat and simultaneously storing a portion of the drive energy expended in the overturning, to bias the valve in its closed position, and to discharge the stored energy to aid in opening the valve upon reverse turning of the drive motor and motor drive shaft.
REFERENCES:
patent: 4203573 (1980-05-01), Boss
patent: 4621789 (1986-11-01), Fukamachi
ETI Systems
Murphey John J.
Rosenthal Arnold
LandOfFree
Feedback motor-operated valve does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Feedback motor-operated valve, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Feedback motor-operated valve will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-342069