High pressure pump

Details High pressure pump High pressure pump

1997-04-29

1998-06-23

Gluck, Richard E.

Pumps

Motor driven

Fluid motor

F04B 1700

Patent

active

057696144

ABSTRACT:
A high-pressure pump having a high-pressure cylinder which has a vertically moving plunger fitted therein from the upper side thereof. The high-pressure cylinder has at least one opening in the bottommost portion thereof to allow a fluid to flow in or out of the high-pressure cylinder. A hydraulic cylinder for driving the plunger is provided on the top of the high-pressure cylinder. In addition, a migration preventing device is provided between the hydraulic cylinder and the high-pressure cylinder and in contact with the plunger driving shaft to prevent migration of a working fluid leaking out from the hydraulic cylinder to the surface of the plunger fitted in the high-pressure cylinder.

REFERENCES:
patent: 3174409 (1965-03-01), Hill
patent: 4477232 (1984-10-01), Mayer
patent: 5106275 (1992-04-01), Santi et al.
patent: 5173036 (1992-12-01), Fladby

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