Pump

Details Pump Pump

2007-09-04

2007-09-04

Leslie, Michael (Department: 3745)

Power plants

Pressure fluid source and motor

Including by-pass or restrictor controlling flow circuit

C092S012200, C417S269000

Reexamination Certificate

active

11615067

ABSTRACT:
A hydraulic pump apparatus having an internal sump formed by a housing having an internal portion and an end cap secured to the housing. A rotatable cylinder block is located in the sump and driven by an input shaft extending into the housing. The pump apparatus also has a system of hydraulic porting in fluid communication with the cylinder block. The porting includes a pair of system ports located on a first side of the hydraulic pump apparatus, a fluid inlet on a second side of the hydraulic pump apparatus, opposite the first side, and a bypass valve positioned on the second side adjacent to the fluid inlet.

REFERENCES:
patent: 3680312 (1972-08-01), Forster
patent: 4690036 (1987-09-01), Kosaka et al.
patent: 4896506 (1990-01-01), Shivvers et al.
patent: 5845559 (1998-12-01), Schroeder et al.
patent: 6185936 (2001-02-01), Hauser et al.

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