Double acting pump

Details Double acting pump Double acting pump

1990-07-16

1991-12-31

Bertsch, Richard A.

Pumps

Expansible chamber type

Plural pumping chambers

417535, 417536, 74 55, F04B 2102

Patent

active

050767690

ABSTRACT:
An improved double acting piston pump of the type having a shaft connected to the piston for reciprocating the piston wherein the shaft extends from the pump body. The improvement of the present invention is to reciprocate the shaft with an asymmetrical uniform motion rotary cam so that the pump delivers the same constant flow rate of a liquid being pumped during both the forward and the backward movements of the pump's piston.

REFERENCES:
patent: 679454 (1901-07-01), Connor
patent: 1880494 (1932-10-01), Sandage
patent: 3207083 (1965-09-01), Lohry et al.
patent: 3990816 (1976-11-01), Kohler et al.
patent: 4028017 (1977-06-01), Audsley
patent: 4236880 (1980-12-01), Archibald
patent: 4494447 (1985-01-01), Sisk
patent: 4603593 (1986-08-01), Clegg
E. Oberg and F. D. Jones, Machinery's Handbook, 19, 712-719, (1974).

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