Housing with multiple case drain ports for hydrostatic...

Details Housing with multiple case drain ports for hydrostatic... Housing with multiple case drain ports for hydrostatic...

2006-09-19

2006-09-19

Look, Edward K. (Department: 3745)

Expansible chamber devices

Displacement control of plural cylinders arranged in...

Parallel cylinders

C092S086000

Reexamination Certificate

active

07107892

ABSTRACT:
In a variable displacement hydraulic pump having a housing with a multiplicity of interconnected surfaces, including opposed end surfaces and intermediate side surfaces, the improvement comprising the location of at least one case drain orifice in each of a plurality of differing ones of the surfaces in a manner such that at least one of the orifices is located in the vicinity of the top surface of the housing in any spatial orientation of the housing.

REFERENCES:
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patent: 4793774 (1988-12-01), Bradt et al.
patent: 5794515 (1998-08-01), Bethke
patent: 5845559 (1998-12-01), Schroeder et al.
patent: 6332393 (2001-12-01), Trimble
patent: 6494686 (2002-12-01), Ward
patent: 6502394 (2003-01-01), Trimble
patent: 6526748 (2003-03-01), Trimble

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