Fluid handling – Systems – Sequentially closing and opening alternately seating flow...
Patent
1976-06-01
1978-02-28
Nilson, Robert G.
Fluid handling
Systems
Sequentially closing and opening alternately seating flow...
13759617, 251138, F16K 1116
Patent
active
040760464
ABSTRACT:
A valve assembly having a small volume cavity formed therein which communicates with two valves, one of which is closed completely before the other one is opened and vice versa. An actuating mechanism holds a valving member in one of the valves in an opened condition to thereby maintain a fluidic path through the one valve and the cavity. The other valving member at this time lies in a closed position preventing communication between this valve and the cavity. The actuating mechanism when actuated moves away from the valving member in the open valve allowing the open valve to close completely. The fluidic path through the one valve is thereby broken. A second fluidic path is made when the actuating mechanism moves the other valving member to an opened position.
REFERENCES:
patent: 3112769 (1963-12-01), Broadwell
patent: 3181854 (1965-05-01), Backlund
patent: 3216440 (1965-11-01), Kohman
Hieronymus Gerald Whitfield
Sendelweck Michael Lynn
West James Everett
Woods Joe William
Hairston Kenneth W.
International Business Machines - Corporation
Klitzman Maurice H.
Nilson Robert G.
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