Rotary valve

Details Rotary valve Rotary valve

1981-11-06

1983-09-27

Cohan, Alan

Valves and valve actuation

Rotary valves

Plug

251312, 251283, 13762547, 137269, F16K 326

Patent

active

044064420

ABSTRACT:
A rotary valve having a hollow spool with a metering notch rotatable on a sleeve which is pressed into a valve body, the sleeve having an opening selectively and progressively alignable with said notch. A thrust needle bearing is trapped between a shoulder on the spool and a cap threaded into the valve body. A passage freely transmits pressure inside said hollow spool to the side of the bearing opposite said shoulders to reduce the thrust force imposed on said bearing.

REFERENCES:
patent: 1517877 (1924-12-01), Wallem
patent: 2312941 (1943-03-01), Tucker
patent: 2766962 (1956-10-01), Fodor
patent: 2850041 (1958-09-01), Radanof

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