Hydraulic pumping device

Details Hydraulic pumping device Hydraulic pumping device

1994-07-13

1995-11-28

Denion, Thomas E.

Expansible chamber devices

Cylinder detail

Nonmetallic piston contacting portion

92187, 92248, F01B 1102, F16J 1000, F16J 900

Patent

active

054697760

ABSTRACT:
A hydraulic pumping device for use in a hydraulic machine having a piston and slider shoe unit made of a combination of plastic and metal material to operate with virtually lubricant free fluid.

REFERENCES:
patent: 3183848 (1965-05-01), Raymond
patent: 3418942 (1968-12-01), Partos
patent: 3746476 (1973-07-01), Bradley
patent: 4519119 (1985-05-01), Nakayama et al.
patent: 4683803 (1987-08-01), Miller et al.
patent: 5131818 (1992-07-01), Wittkup

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