Fluid handling – Control by change of position or inertia of system
Patent
1990-11-21
1991-09-24
Nilson, Robert G.
Fluid handling
Control by change of position or inertia of system
F16K 1736
Patent
active
050506293
ABSTRACT:
A valve for controlling the passage of fluid between a first conduit and a second conduit. A body has a first port for being coupled to the first conduit, has a second port for being coupled to the second conduit, and has a valve chamber joining the first and second ports. A gate is mounted within the valve chamber of the body for movement between an opened position in which fluid is allowed to pass between the first and second ports through the valve chamber and a closed position in which fluid is prevented from passing between the first and second ports through the valve chamber. A latch member is used to latch the gate in the open position. A first spring urges a portion of the latch member against a portion of the body when the latch member is in an extended position and the gate is in the opened position to hold the latch member in the extended position and to hold the gate in the opened position, and urges the gate to the closed position when the latch member is in the retracted position. A second spring urges the latch member to a retracted position when the valve is subjected to a predetermined amount of vibration.
REFERENCES:
patent: 2615461 (1952-10-01), Crow
patent: 3965917 (1976-06-01), Speck
patent: 4099551 (1978-07-01), Billington et al.
patent: 4165758 (1979-08-01), Douce
patent: 4742839 (1988-05-01), Stock
patent: 4799505 (1989-01-01), Nowell
patent: 4821759 (1989-04-01), Diamond
patent: 4903720 (1990-02-01), McGill
patent: 4971094 (1990-11-01), Gonzalez
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