Hydraulic connection device

Details Hydraulic connection device Hydraulic connection device

1993-10-04

1995-01-03

Brown, David H.

Valves and valve actuation

With means for blocking or disabling actuator

Actuator, or blocking means, includes flow path joint

251148, 137887, F16K 3500

Patent

active

H00013919

ABSTRACT:
A valve assembly is useful for providing ports for connecting hydraulic circuits when the need arises. When an auxiliary circuit is being connected to the valve assembly, the circuit already connected may develop a differential fluid pressure drop. The subject valve assembly includes an inlet, a first outlet and a second outlet. A shut-off valve is positioned between the inlet and the first outlet. The shut-off valve must be in the closed position before the auxiliary circuit can be connected to the second outlet of the valve assembly. The shut-off valve includes a handle having an extending portion which overlies the second outlet when the shut-off valve is in the open position thus preventing the connection of circuit to the second outlet. This arrangement of components prevents connecting the auxiliary circuit to the valve assembly when the shut-off valve is in the open position.

REFERENCES:
patent: 2080485 (1937-05-01), Johsen
patent: 2236104 (1941-03-01), McIntosh
patent: 2404996 (1946-07-01), Thrush
patent: 4887644 (1989-12-01), Jeromson et al.
patent: 4982929 (1991-01-01), Spurling

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