Diaphragm vacuum pump for vehicles

Details Diaphragm vacuum pump for vehicles Diaphragm vacuum pump for vehicles

1974-12-16

1976-07-13

Freeh, William L.

Pumps

Expansible chamber type

Biasing means effects eduction stroke of abutment driven,...

92 85R, F04B 3900, F01B 1102

Patent

active

039690458

ABSTRACT:
In a diaphragm vacuum pump for vehicles, a resilient cushion material is integrally secured on the diaphragm piston within the pressure reduction chamber of the pump to minimize the volume of the pressure reduction chamber when the diaphragm piston reaches its upper dead point.

REFERENCES:
patent: 2185784 (1940-01-01), Corydon et al.
patent: 2638849 (1953-05-01), Budlane
patent: 2895424 (1959-07-01), Tramontini et al.
patent: 3298321 (1967-01-01), Reifel
patent: 3613518 (1971-10-01), Prosser

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