Hydraulic valve

Details Hydraulic valve Hydraulic valve

1975-02-27

1978-02-28

Cline, William R.

Valves and valve actuation

Limit stop

Adjustable

251 42, 251 60, 251 634, 251 635, 251284, F16K 5100

Patent

active

040762106

ABSTRACT:
A hydraulic valve has a valve member whose travel is limited at one end by an abutment. The abutment is part of a hydraulic piston-cylinder arrangement, and when the piston-cylinder arrangement is pressurized and the valve member is moved to the end of its travel, the abutment is held in a first position where the valve is only open to a small extent. If the piston-cylinder arrangement is then pressure-relieved, the force moving the valve member against the abutment displaces the abutment so that the valve can open further.

REFERENCES:
patent: 1710055 (1929-04-01), Grant
patent: 2272091 (1942-02-01), Loewe
patent: 2586906 (1952-02-01), Beckett et al.
patent: 3155365 (1964-11-01), Hartung et al.
patent: 3159375 (1964-12-01), Schrecongost et al.
patent: 3213886 (1965-10-01), Pearne
patent: 3626807 (1971-12-01), Shartzer
patent: 3631887 (1972-01-01), Schlechtriem et al.
patent: 3815480 (1974-06-01), Spyra
patent: 3818805 (1974-06-01), Johansson

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