Seal for a rotary hydraulic valve

Details Seal for a rotary hydraulic valve Seal for a rotary hydraulic valve

1984-12-07

1985-10-08

Weakley, Harold W.

Fluid handling

Systems

Multi-way valve unit

251175, 251180, 277 27, 277 75, 277205, F16K 514

Patent

active

045454086

ABSTRACT:
Disclosed is a seal for a rotary hydraulic valve having an inner surface which is concave and spaced from the recess in the rotary core in which it is received. Two parallel troughs are formed in the inner surface between the edges thereof and the central flow passageway. In use, fluid under pressure enters the trough and distorts the seal both radially outwardly against the valve body and circumferentially outwardly against the sides of the seal recess.

REFERENCES:
patent: 2465175 (1949-03-01), Schwarz
patent: 2686402 (1954-08-01), Samuel
patent: 2840109 (1958-06-01), Wadleight
patent: 2970805 (1961-02-01), Pool
patent: 3527507 (1970-09-01), Clark
patent: 3550628 (1970-12-01), Warner
patent: 3865139 (1975-02-01), Toluai
patent: 3967811 (1976-07-01), Keller
patent: 3981330 (1976-09-01), Watts
patent: 4132388 (1979-01-01), Billeter

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