Valve

Details Valve Valve

2006-03-14

2006-03-14

Nicolas, Frederick (Department: 3753)

Valves and valve actuation

Fluid actuated or retarded

Pilot or servo type motor

C251S030010, C251S032000, C251S057000

Reexamination Certificate

active

07011289

ABSTRACT:
A sliding spool valve (1) is provided for controlling flow of fluid especially between an inlet (2) at a relatively high pressure and an outlet (6) at a relatively low pressure. Wherein the spool valve is reciprocally displaced between open and closed positions by hydraulic action of the transmitted fluid.

REFERENCES:
patent: 2593039 (1952-04-01), Livers et al.
patent: 3630027 (1971-12-01), Lambert
patent: 3648967 (1972-03-01), O'Neill et al.
patent: 3790125 (1974-02-01), Swatty
patent: 3951162 (1976-04-01), Wilke
patent: 4513653 (1985-04-01), Varlemann
patent: 4580590 (1986-04-01), Brinkel et al.
patent: 4800922 (1989-01-01), Bratland
patent: 5135020 (1992-08-01), Rausch
patent: 2422593 (1975-11-01), None
patent: 1435710 (1976-05-01), None
patent: 1476173 (1977-06-01), None
patent: 2121514 (1983-12-01), None

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