Two-piece swashplate pump housing

Details Two-piece swashplate pump housing Two-piece swashplate pump housing

2005-08-09

2005-08-09

Yu, Justine R. (Department: 3746)

Pumps

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

C417S222100, C417S222200

Reexamination Certificate

active

06926501

ABSTRACT:
A housing for a hydraulic pump is provided. The pump has an input shaft connected to a swashplate, a plurality of pistons, a plurality of check valves, and a metering device having an actuator. The housing includes a first housing member having a fluid inlet, a shaft bore adapted to receive the input shaft, and a swashplate bore adapted to receive the swashplate. A second housing member has a plurality of cylinders adapted to slidably receive the plurality of pistons and a plurality of check valve bores that are in fluid communication with the cylinders and are adapted to receive the plurality of check valves. The second housing member also includes an actuator bore configured to receive at least a portion of the actuator, a collector cavity in fluid communication with each of the check valve bores, and a fluid outlet in fluid communication with the collector cavity.

REFERENCES:
patent: 3304886 (1967-02-01), Roberts
patent: 3450058 (1969-06-01), Stein
patent: 3663122 (1972-05-01), Kitchen
patent: 3873240 (1975-03-01), Leduc et al.
patent: 3981630 (1976-09-01), Leduc et al.
patent: 4149830 (1979-04-01), Woodruff
patent: 6035828 (2000-03-01), Anderson et al.
patent: 6216670 (2001-04-01), Anderson et al.

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