Dual pressure hydraulic pump

Details Dual pressure hydraulic pump Dual pressure hydraulic pump

1975-10-14

1976-10-12

Freeh, William L.

Pumps

Successive stages

With interstage discharge or additional discharge from...

417286, FO4B 300

Patent

active

039854701

ABSTRACT:
A device for pumping hydraulic fluid by means of an air driven reciprocating piston. Valve means control the motion of the piston and the pressure of the hydraulic fluid and an improved, two-piece, piston construction improves its practical machinability.

REFERENCES:
patent: 1831370 (1931-11-01), Slatcher
patent: 2036464 (1936-04-01), Dodge
patent: 2820415 (1958-01-01), Born
patent: 2850981 (1958-09-01), Arp
patent: 2938465 (1960-05-01), McFarland et al.
patent: 3177782 (1965-04-01), Sampson
patent: R12599 (1967-01-01), Hill

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