Fluid flow control valve mechanism

Details Fluid flow control valve mechanism Fluid flow control valve mechanism

1977-07-28

1979-10-02

Cline, William R.

Fluid handling

With means for separating solid material from the fluid

Plural separating elements

137549, 1376253, 251206, 251325, 251 615, 123117A, E03B 707

Patent

active

041694899

ABSTRACT:
A control valve is provided with an inlet and outlet port and a variable flow control arrangement therebetween. The variable flow control arrangement is comprised of a hollow spool member having a plurality of orifices disposed in a spiral manner along the length of the spool and a sleeve having an annular valve member in contact with the spool movable axially of the spool to selectively expose one or more orifices to a valve chamber in communication with the outlet port. The sleeve member is connected to a flexible diaphragm having a first surface exposed to an atmospheric pressure chamber within the control valve and a second surface exposed to a signal vacuum chamber adapted to be connected to a vacuum supply. Spring means are provided in the signal vacuum chamber for normally biasing the sleeve into a position covering all of the orifices in the absence of a vacuum signal within the signal vacuum chamber.

REFERENCES:
patent: 907609 (1908-12-01), Kirk
patent: 922060 (1908-09-01), Stockdon
patent: 2635620 (1953-04-01), Deardorff
patent: 3317183 (1967-05-01), Szwargulski
patent: 3321173 (1967-05-01), Seger
patent: 3493217 (1970-02-01), Farley
patent: 3853146 (1974-12-01), Blair
patent: 3902696 (1975-09-01), Ito et al.
patent: 3996955 (1976-12-01), Kawabata
patent: 4010721 (1977-03-01), Ludwig
patent: 4041982 (1977-08-01), Lindner

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