Three-way hydraulic controller

Details Three-way hydraulic controller Three-way hydraulic controller

1982-04-08

1983-11-15

Weakley, Harold W.

Fluid handling

Destructible or deformable element controlled

Heat destructible or fusible

137556, 13759618, 1376275, 251 14, F16K 1304

Patent

active

044149956

ABSTRACT:
A controller comprises a body having a first port, a second port and a third port. A valve element is disposed in the body for movement between a first position which blocks fluid flow through the first port while permitting fluid communication between the second and third ports and a second position to permit fluid communication between the first and second ports while blocking fluid flow through the third port. A device is disposed in the body for urging the valve element to the second position. A mechanism is connected to the body for moving the valve element to the second position and this moving apparatus includes a member which when heated permits the urging device to move the valve member to the first position. Indicator means are provided to indicate position of the valve element. Safety means is provided to avoid accidental movement of the valve element to the second position during manual operation.

REFERENCES:
patent: 3115330 (1963-12-01), Dollison
patent: 3618627 (1971-11-01), Wagner
patent: 4108372 (1978-08-01), Brakebill
patent: 4240455 (1980-12-01), McGee
patent: 4306586 (1981-12-01), Spencer

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