Vacuum check valve

Details Vacuum check valve Vacuum check valve

1988-11-30

1990-08-28

Nilson, Robert G.

Fluid handling

Line condition change responsive valves

Direct response valves

137542, F16K 1506

Patent

active

049517082

ABSTRACT:
Resilient accommodation of vacuum brake booster check valves to vacuum source-generated pressure pulses tending to cause the valves to pulse open and close is accomplished by providing a resilient annular area in the check valve radially between its axial center and the area where it sealingly engages a valve seat when closed to inhibit valve pulsations and resulting valve noises generated by pulsations from the vacuum source.

REFERENCES:
patent: 1530924 (1925-03-01), Biedermann
patent: 2148850 (1939-02-01), Deakins
patent: 4556084 (1985-12-01), Frawley
patent: 4643221 (1987-02-01), Parker

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