Over-pressure relief means

Details Over-pressure relief means Over-pressure relief means

1994-04-29

1995-01-03

Bertsch, Richard A.

Pumps

With condition responsive pumped fluid control

Bypass or relief valve part carried by or carries...

417296, 417311, F04B 4900

Patent

active

053781163

ABSTRACT:
Inlet valves, in a fluid-pressuring cylinder, are biasingly held in given operative positions where they occlude passageways, formed in the cylinder, which open at opposite ends onto the cylinder interior and the cylinder exterior. When an incompressible slug of liquid enters the cylinder, the relevant valve retracts against the bias thereof to expose the passageway, whereby the risk of over-pressuring is avoided, and the excess pressure is simply vented through the passageway(s), directly to the exterior of the cylinder.

REFERENCES:
patent: 1931833 (1933-10-01), Sparacino
patent: 1943102 (1934-01-01), Woodruff
patent: 1994146 (1935-03-01), Ochel
patent: 2626099 (1953-01-01), Ashley
patent: 3814546 (1974-06-01), Ostwald
patent: 5011383 (1991-04-01), Bennitt
patent: 5015158 (1991-05-01), Bennitt
patent: 5141413 (1992-08-01), Bennitt

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