Flow control device

Details Flow control device Flow control device

1988-07-08

1989-02-14

Bryant, III, James E.

Valves and valve actuation

Hermetic flexible wall seal for actuator

Bellows

251254, 138 46, F16K 4110

Patent

active

048041645

ABSTRACT:
A flow control device comprising a spindle having a disk at its lower end and a handle at its upper end and spring-biased to bring the disk into pressing contact with a disk seat within a case, a closure having a top wall, and at least one rollable member resting on the upper surface of the closure top wall and mounted on the spindle at an upper end portion thereof projecting upward from the upper surface of the closure top wall. The closure is formed in the upper surface of its top wall with a lower recessed portion for the rollable member to partly fit in, an upper recessed portion for the rollable member to partly fit in and a slanting guide face between the two recessed portions. The rollable member is movable by the rotation of the handle to partly fit into the lower recessed portion to thereby hold the disk in pressing contact with the disk seat or to partly fit into the upper recessed portion to thereby hold the disk away from the disk seat.

REFERENCES:
patent: 1155576 (1915-10-01), Isley
patent: 2105864 (1938-01-01), Saunders
patent: 2114139 (1938-04-01), Crosthwaith
patent: 2933283 (1960-04-01), Kreis
patent: 3127786 (1964-04-01), Wooley
patent: 3164173 (1965-01-01), Semon
patent: 3787023 (1974-01-01), Shufflebarger et al.
patent: 4201366 (1980-05-01), Danko et al.

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