Piston shoe for fluid pressure pump motor

Details Piston shoe for fluid pressure pump motor Piston shoe for fluid pressure pump motor

1974-02-19

1976-09-07

Freeh, William L.

Expansible chamber devices

With lubricating means

Piston has lubricant retaining or conducting means

92172, 92188, 91488, 91499, F01B 3110

Patent

active

039787729

ABSTRACT:
A piston shoe for fluid pressure pump motors of the piston type is substantially disc-shaped and includes a concave portion provided upon one end face thereof for seating the convex portion of a piston rod associated with the piston and cylinder assemblies of the pump motor, while the other end face thereof is substantially flat for contacting the sliding surface of a swash plate. A holder or retainer is also provided in association with the shoe for retaining the piston rod within the concave seat, such retainer being secured to the shoe by biasing means, or alternatively by being pressed or crimped thereon.

REFERENCES:
patent: 2638850 (1953-05-01), Ferris
patent: 2674196 (1954-04-01), Ferris
patent: 2880042 (1959-03-01), Budzich
patent: 3283725 (1966-11-01), Scott et al.
patent: 3726189 (1970-04-01), Rubery

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