Valves and valve actuation – With means to increase head and seat contact pressure – Fluid pressure
Patent
1982-04-28
1985-10-22
Weakley, Harold W.
Valves and valve actuation
With means to increase head and seat contact pressure
Fluid pressure
251182, 251317, 251368, F16K 2500
Patent
active
045483850
ABSTRACT:
A rotor valve has a set of sealing members or inserts positioned in longitudinal channels formed on the outer surface of a cylindrical rotor. A resilient O-ring snuggly engaged in a groove in the rear surface of each insert urges it against a surrounding rotor chamber formed in a valve body. Due to the resilience of the O-ring, the fluid seal between the rotor and the rotor chamber does not bind due to contaminants or extreme variations in temperature. The sealing inserts are formed of a deformable material. Fluid pressure acting on the inserts deforms them to produce a lateral squeezing force on the O-ring. The interaction between the inserts and the O-ring enhances the integrity of both the seal between the inserts and the surrounding rotor chamber and the seal established by the O-ring itself between the rotor and the insert.
REFERENCES:
patent: 2234434 (1941-03-01), Johnson
patent: 2857130 (1958-10-01), Brisbane
patent: 3033515 (1962-05-01), Brisbane
patent: 3497179 (1970-02-01), Smyers
patent: 3556158 (1971-01-01), Barbuto
Quality Controls, Inc.
Weakley Harold W.
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