Spool valve

Details Spool valve Spool valve

1984-11-30

1986-06-10

Michalsky, Gerald A.

Fluid handling

Systems

Multi-way valve unit

13762563, 13762564, F15B 13043

Patent

active

045937192

ABSTRACT:
A high frequency four-way valve reciprocated by hydromechanical amplifiers has its amplifier volumes volume compensated by passage means in each valve spool end connecting each amplifier volume with the adjacent outlet port. In a modification, there are longitudinally extending grooves on the outer periphery of each drive piston, one group of longitudinal grooves connecting the amplifier volume with the annular lubrication grooves around the piston and another group of longitudinal grooves connecting the annular grooves with the adjacent outlet port. The longitudinal grooves supply lubricant to the annular grooves, and also enhance the volume compensation.

REFERENCES:
patent: 2600348 (1952-06-01), Walthers
patent: 2655940 (1953-10-01), Jackson
patent: 2966891 (1961-01-01), Williams
patent: 2982306 (1961-05-01), Fitzgibbon
patent: 3219060 (1965-11-01), Pearl et al.
patent: 3269417 (1966-08-01), Lansky et al.
patent: 3339572 (1967-09-01), Gordon et al.
patent: 3502109 (1970-03-01), Straight
patent: 3508584 (1970-04-01), Kutik
patent: 4094229 (1978-06-01), Leonard
patent: 4319609 (1982-03-01), Debrus
Moog Drawing A31016 and Moog Pictorial Assembly 760 Series.

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