Hydraulic pump with side discharge valve plate

Details Hydraulic pump with side discharge valve plate Hydraulic pump with side discharge valve plate

1995-07-19

1997-10-28

Gluck, Richard E.

Pumps

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

92 57, F04B 112, F04B 2708

Patent

active

056811497

ABSTRACT:
A hydraulic pump is disclosed which uses a side-discharge valve plate. The present valve plate includes a valve plate body having front and back surfaces with a side defining the peripheral surface therebetween. First and second fluid passages are formed on at least one of said front and back surfaces for respectively defining a fluid inlet for supplying hydraulic fluid to a piston and a fluid outlet for receiving pressurized hydraulic fluid from a piston. At least one fluid access is formed in the side of the valve plate body, connecting with at least one of said fluid passages to define a fluid pathway therewith. The design of the present invention thereby permits a pump design have shorter axial length, permitting a smaller size pump which offers improved space considerations. Also, the present valve plate also has few contact surfaces, thereby reducing leakage and improving pump efficiency.

REFERENCES:
patent: 2987006 (1961-06-01), Bowers et al.
patent: 3011453 (1961-12-01), Budzich
patent: 3079870 (1963-03-01), Thoma
patent: 3170297 (1965-02-01), Larson
patent: 3190075 (1965-06-01), Ebert
patent: 3295457 (1967-01-01), Oram
patent: 3514223 (1970-05-01), Hare
patent: 3587404 (1971-06-01), Kratzenberg
patent: 3693508 (1972-09-01), Chondzinski
patent: 3975990 (1976-08-01), Kraus

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