Piston pump with floating port plate providing variable force ba

Details Piston pump with floating port plate providing variable force ba Piston pump with floating port plate providing variable force ba

1975-02-07

1977-04-26

Freeh, William L.

Motors: expansible chamber type

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

Motive fluid bypass to or from assembly

F01B 1304

Patent

active

040194256

ABSTRACT:
A hydraulic fluid pressure energy translating device comprising an axial multi-piston pump including an axially and laterally constrained barrel and a floatingly disposed port plate responsive to hydrostatic forces within the pump. The port plate includes hydrostatic pressure balancing means which tend to balance hydrostatic forces acting on the port plate during operation of the pump to maintain an optimum bearing clearance between the port plate and barrel, thereby controlling fluid leakage and maintaining adequate lubrication and support at this interface.

REFERENCES:
patent: 2977891 (1961-04-01), Bishop
patent: 3051093 (1962-08-01), Budzich
patent: 3056357 (1962-10-01), Bohnhoff
patent: 3136263 (1964-06-01), Timms
patent: 3752053 (1973-08-01), Wouters et al.

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