Vacuum boost valve

Details Vacuum boost valve Vacuum boost valve

1991-12-03

1993-02-23

Hepperle, Stephen M.

Fluid handling

Self-proportioning or correlating systems

Self-controlled branched flow systems

123520, 13750536, 137907, F16K 1110, F16K 31365

Patent

active

051881411

ABSTRACT:
A vacuum boost valve senses when the intensity of vacuum from a variable intensity vacuum source is about to drop below a threshold and supplies a boost so that when the intensity of the vacuum source is within a range immediately below the threshold, the intensity of vacuum delivered to a load does not drop below the intensity of the vacuum source and is in fact increased over what it would otherwise be without the boost. The vacuum boost is obtained by using a venturi.

REFERENCES:
patent: 1795319 (1931-03-01), Spohr
patent: 3164170 (1965-01-01), Gutter
patent: 3913545 (1975-10-01), Haase et al.
patent: 4026258 (1977-05-01), Ino et al.
patent: 4235207 (1980-11-01), Nishimura
patent: 4951637 (1990-08-01), Cook
patent: 5005550 (1991-04-01), Bugin et al.
patent: 5083546 (1992-01-01), Detweiler et al.

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