Piston roller alignment configuration for a radial piston mechanism
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United States of America Patent
Stats
-
May 27, 1997
Grant Date -
N/A
app pub date -
Nov 13, 1995
filing date -
Nov 30, 1994
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
The invention relates to a hydraulic mechanism comprising: a cam; a cylinder block; cylinders formed in the cylinder block; pistons slidably mounted in the cylinders; thrust rollers for the pistons acting on the cam and axially defined by two transverse faces; two wedging parts for each roller, each wedging part being disposed in a recess between the end face of the roller and the inside face of the cylinder, thereby holding the roller in position, one of the wedging parts extending to the bottom portion of the recess and including a groove parallel to the axis of the piston, and a projection that is fixed relative to the cylinder being received in the groove. According to the invention, a hole formed in the cylinder block opens out into its peripheral face and a generally U-shaped part having two branches is mounted on the cylinder block by inserting a first branch thereof in the hole and by fixing the first branch relative to the cylinder block, its second branch being inserted in the groove and constituting said projection, the web of the U-shape overlying the peripheral face. An application of the invention lies in making a hydraulic motor that is reliable and that is of reduced manufacturing cost.
First Claim
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Cited Art Landscape
Patent Citation Ranking
- 6 Citation Count
- F04B Class
- 5.31 % this patent is cited more than
- 28 Age