Hydraulic swash plate pumps

Details Hydraulic swash plate pumps Hydraulic swash plate pumps

1975-05-27

1976-09-21

Freeh, William L.

Pumps

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

F04B 112

Patent

active

039816303

ABSTRACT:
A swash plate pump of the type wherein a plurality of pistons bear against the swash plate and are given a reciprocating movement when the plate is rotated by a drive shaft. The drive shaft comprises a solid portion and a hollow portion which latter constitutes a central admission conduit for the liquid to be pumped. The swash plate is mounted at the junction between the solid and hollow portions of the shaft, and the plate has an aperture which communicates with the central conduit and a crescent-shaped port for liquid distribution to the pistons. These pistons are arranged in a circle concentric with the solid shaft portion. A taper roller bearing is mounted on the hollow shaft portion and the front face of the swash plate bears against the roller bearing. The discharge flow of liquid can be divided for distribution into several separate flows by a cylindrical sleeve located on the solid shaft portion.

REFERENCES:
patent: 2821932 (1958-02-01), Lucien
patent: 3498227 (1970-03-01), Kita

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