Valves for controlling water supply

Details Valves for controlling water supply Valves for controlling water supply

1988-07-14

1989-09-12

Rosenthal, Arnold

Fluid handling

Systems

Multiple inlet with single outlet

25112911, F16K 3104, F16K 1120

Patent

active

048650765

ABSTRACT:
A motorized valve, FIG. 2, is provided with a solenoid operated clutch which is energized when the valve is in operation and which can be de-energized, for example on power failure to allow the valve to be instantaneously driven to a closed position. The valve has a motor with a non-circular shaft driving the screw of a screw and nut mechanism in which the nut carries the valve closure element, and the clutch comprises a plurality of balls carried by a cage and held in engagement with the screw by a clutch ring which is held in the operative position by the solenoid. De-energization of the solenoid allows the ring to be spring-driven allowing the balls to disengage from the groove and allowing the screw to be displaced out of the cage by the driving spring.

REFERENCES:
patent: 3505888 (1970-04-01), Denkowski
patent: 4763874 (1988-08-01), Ogawa

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