Hydraulic piston pumps equipped with suction valve

Details Hydraulic piston pumps equipped with suction valve Hydraulic piston pumps equipped with suction valve

1993-02-26

1994-10-11

Bertsch, Richard A.

Pumps

Three or more cylinders arranged in parallel, radial, or...

417545, 417284, 91499, F04B 112

Patent

active

053541812

ABSTRACT:
Hydraulic piston pump driven in an alternating reciprocating motion by bearing, through a stud, against a cam carried by a drive shaft, characterized by the fact that a device acting as non-return feed valve is incorporated in each piston (14) while the discharge pressure is permanently re-injected into the interior of the stud (17) by which said stud (17) takes support on said cam (6).

REFERENCES:
patent: 2389374 (1945-11-01), Levy
patent: 2431686 (1947-12-01), Deschamps
patent: 2821932 (1958-02-01), Lucien
patent: 2945444 (1960-07-01), Leissner
patent: 2980077 (1961-04-01), Magill
patent: 3303749 (1967-02-01), Ocule
patent: 3498227 (1970-03-01), Kita
patent: 3514223 (1970-05-01), Hare
patent: 3609970 (1971-10-01), Benson
patent: 4637293 (1987-01-01), Yamaguchi et al.
patent: 5114261 (1992-05-01), Sugimoto et al.

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