Hydraulic axial piston pumps

Details Hydraulic axial piston pumps Hydraulic axial piston pumps

1998-04-06

2000-02-15

Jeffery, John A.

Pumps

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

417203, 4172221, 417270, 417312, 91 65, 91487, 91506, 91499, 91 28, 92 57, 92 122, 92 47, 92 71, F04B 112

Patent

active

060245417

ABSTRACT:
A hydraulic axial pump/motor comprises a plurality of revolving as well as reciprocating pistons, operatively associated with a stationary port plate. The port plate comprises at least a first, elongated, arcuate suction port and at least a second elongated, arcuate discharge port, divided by a bringing portion extending between the downstream side of the suction port and the upstream side of the discharge port. A tortuous passage of a non-uniform cross-section is formed in the bridging portion, allowing the by-passing of the fluid first in a direction towards the downstream side of the suction port and then towards and into the upstream side of the discharge port.

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