Hydraulic valve actuating device

Details Hydraulic valve actuating device Hydraulic valve actuating device

1988-05-20

1989-08-01

Walton, George L.

Valves and valve actuation

Lost motion between actuator and valve

Lever

251245, 251322, F16K 3144

Patent

active

048528528

ABSTRACT:
A 2-port, 2-directional hydraulic valve is disposed alongside a pulse generator in a casing, the actuating force of the pulse generator being transmitted to a push rod of the valve for actuating the latter via a two-armed lever mounted like the beam of a balance. A threaded bore in one lever arm receives a bush which is adjustable in the direction of actuation and contains a spring-loaded pressure member. A set screw can be used to pre-stress the spring and thus exactly adjust the transmitted actuating force, while the adjustable bush is used for pre-setting the actuating travel.

REFERENCES:
patent: 677940 (1901-07-01), Carr
patent: 814421 (1906-03-01), Austin
patent: 1204520 (1916-11-01), Tuttle
patent: 2287548 (1942-06-01), Broden
patent: 2339378 (1944-01-01), Clench et al.
patent: 4017221 (1977-04-01), Dezelan
patent: 4694862 (1987-09-01), Rott

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