High pressure liquid pump

Details High pressure liquid pump High pressure liquid pump

1991-09-27

1993-06-01

Smith, Leonard E.

Pumps

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

417529, F04B 2104

Patent

active

052154432

ABSTRACT:
A high pressure liquid pump has a drivable swash plate and a plunger which is acted on by the swash plate and guided in a cylinder bore of the pump housing. In the region of the front end of the plunger facing the swash plate a valve arrangement is provided between a low pressure chamber and a pump chamber. A second valve arrangement is arranged between the pump chamber and a high pressure chamber. The plunger has a transverse bore which stands in communication with the low pressure chamber during the pump movement and also has an axial bore extending from the transverse bore to the front end of the plunger, with the axial bore being enlarged towards the front end while forming a ring-like valve seat, with a valve insert being arranged in the broadened section of the axial bore.

REFERENCES:
patent: 3002528 (1961-10-01), Leissner
patent: 3018737 (1962-01-01), Cook et al.
patent: 3209701 (1965-10-01), Phinney
patent: 5039282 (1991-08-01), Terauchi

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