Double-acting radial piston hydraulic apparatus

Details Double-acting radial piston hydraulic apparatus Double-acting radial piston hydraulic apparatus

2006-10-11

2011-11-08

Kramer, Devon C (Department: 3746)

Pumps

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

Radial cylinders

C091S491000, C091S492000

Reexamination Certificate

active

08052401

ABSTRACT:
A hydraulic apparatus comprises a housing having a central axis; a plurality of radially-oriented piston-cylinder assemblies each including a cylinder supported by the housing and a piston movable within the cylinder, the piston separating radially inner and outer chambers within the cylinder; and valving and associated flow passages for individually controlling the flow of hydraulic fluid to and from the radially inner and outer chambers of each piston-cylinder assembly. The piston-cylinder assemblies are mounted to the housing for pivotal movement by trunnions provided with flow passages for connecting the piston-cylinder assemblies to inlet and outlet ports via the valving and porting.

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