Piston and slipper arrangement for hydraulic pump or motor

Details Piston and slipper arrangement for hydraulic pump or motor Piston and slipper arrangement for hydraulic pump or motor

1974-11-25

1976-10-19

Cohen, Irwin C.

Expansible chamber devices

With lubricating means

Piston has lubricant retaining or conducting means

91488, 92181P, 92248, 138 40, 138 42, F15D 100, F16J 108

Patent

active

039864391

ABSTRACT:
A piston and slipper arrangement for a hydraulic pump or motor includes a tortuous fluid flow passage through the piston to a fluid pressure recess in the thrust face of the slipper at the opposite end of the piston. The fluid passage is formed by a plurality of spaced, cylindrical pockets interconnected by restricted flow channels which tangentially join the pockets.

REFERENCES:
patent: 3586104 (1971-06-01), Hyde
patent: 3741077 (1973-06-01), Hulsebus et al.
patent: 3828654 (1974-08-01), Wiethoff
patent: 3861278 (1975-01-01), Forster
patent: 3873030 (1975-03-01), Barragan

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