Digital proportional spool position control of compensated valve

Details Digital proportional spool position control of compensated valve Digital proportional spool position control of compensated valve

1984-08-06

1986-03-11

Hershkovitz, Abraham

Motors: expansible chamber type

Independently operated timer, delay, pattern or cyclic control

91361, 91459, 13762564, 13762565, 318685, F15B 2102

Patent

active

045746869

ABSTRACT:
A digital proportional valve with valve spool driven in discrete steps by a digital spool actuator in response to a remote manual control signal, while the proportional valve may be provided with positive and negative load compensation.

REFERENCES:
patent: 2420693 (1947-05-01), White
patent: 2683348 (1954-07-01), Petry
patent: 3644817 (1972-02-01), Rosen
patent: 3677298 (1972-07-01), Greenwood et al.
patent: 4095421 (1978-06-01), Silcox
patent: 4107923 (1978-08-01), Budzich
patent: 4190081 (1980-02-01), Coles
patent: 4306314 (1981-12-01), Griffiths

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