Compact hydraulic mechanism with radial pistons

Details Compact hydraulic mechanism with radial pistons Compact hydraulic mechanism with radial pistons

2007-06-27

2011-12-20

Kramer, Devon C (Department: 3746)

Motors: expansible chamber type

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

Radially disposed cylinders

C417S273000, C092S072000

Reexamination Certificate

active

08079298

ABSTRACT:
A hydraulic mechanism including a cylinder block having radial pistons and mounted to rotate in a stationary casing, and a distribution cover that forms a portion of the casing that has feed and discharge ducts that extend between an outside face and inside of face of the cover. The internal distributor has distribution ducts that are selectively connected to the feed and discharge ducts that open out into a distribution face that is perpendicular to the axis of rotation and that is disposed against the communication face of the cylinder block so as to cause the distribution ducts to communicate with the cylinder ducts. In a zone defined radially outwards by end-wall portions of the cylinders, a transverse face of the cylinder block is provided with an axial setback in which at least a portion of the distributor is disposed.

REFERENCES:
patent: 4171732 (1979-10-01), Pinson
patent: 5391059 (1995-02-01), Hallund
patent: 5855115 (1999-01-01), Martin
patent: 6199377 (2001-03-01), Allart et al.
patent: 92/10677 (1992-06-01), None
International Search Report; PCT/FR2007/051538.

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