Slipper arrangement for hydraulic pump

Details Slipper arrangement for hydraulic pump Slipper arrangement for hydraulic pump

1980-08-11

1983-01-04

Freeh, William L.

Expansible chamber devices

Relatively movable working members

Interconnected with common rotatable shaft

91490, 417273, 417539, F01B 102, F04B 3910

Patent

active

043667473

ABSTRACT:
An improved slipper is disclosed for a fluid pressure pump of the radial piston type for operably connecting a piston to a cam lobe on a crankshaft. The slipper includes an inner arcuate side surface for engagement with the cam lobe on the crankshaft and an opening through the slipper body to permit centrifugal flow of fluid for piston filling. The opposite side of the slipper body includes a recess for retaining a hardened annular seat inert. The spherical head of the piston rides on the inner circumference or edge of the insert, and the sharp edge of the insert provides a wiping action on the piston head as relative motion occurs between the piston and slipper. Further, an open area is provided on both sides of the line of contact between the piston and slipper to prevent contaminants from entering between the contacting surfaces which would spoil the seat.

REFERENCES:
patent: 2394285 (1946-02-01), Bevins
patent: 3036557 (1962-05-01), Kimsey
patent: 3168006 (1965-02-01), Bennett
patent: 3320902 (1967-05-01), Paschke
patent: 3744380 (1973-07-01), Sterger

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