Pressure unloading apparatus for a diaphragm pump

Details Pressure unloading apparatus for a diaphragm pump Pressure unloading apparatus for a diaphragm pump

1975-05-30

1977-04-26

Croyle, Carlton R.

Pumps

Motor driven

Fluid motor

417388, F04B 908, F04B 3502

Patent

active

040198375

ABSTRACT:
Apparatus is disclosed for unloading excess pressures developed in a hydraulic diaphragm pump, wherein the pressure of the pumped fluid is sensed by a control diaphragm connected to an unloading valve which is placed in a passage connecting the hydraulic displacement chamber with a hydraulic oil reservoir.

REFERENCES:
patent: 2753805 (1956-07-01), Boivinet
patent: 2919650 (1960-01-01), Wiggermann
patent: 3151562 (1964-10-01), Swartz
patent: 3276673 (1966-10-01), Jones et al.
patent: 3416453 (1968-12-01), Feuillebois et al.

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