The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
May. 28, 1991
Filed:
Oct. 13, 1988
Louis B Bigo, Compiegne, FR;
Poclain Hydraulics, Societe Anonyme, Verberie, FR;
Abstract
This invention relates to a mechanism employing fluid under pressure, comprising: a stator; a rotor; a device for assembling the rotor with respect to the stator, effecting relative rotational assembly of these two elements about a geometrical axis, and ensuring axial holding of said two elements in position, in the two opposite directions, parallel to said geometrical axis; a reaction cam fast with a first of said elements; cylinders made in the second element and disposed radially with respect to said geometrical axis; and pistons mounted in said cylinders and abutting on said cam. According to the invention, the assembly device is constituted by a single bearing which comprises: two rolling tracks made directly on an extension of the reaction cam itself, and on an extension of the element itself in which the cylinders are made, respectively; rolling members disposed between the tracks, capable of abutting on these two tracks so as to ensure axial holding of the rotor with respect to the stator. One application is the production of a compact hydraulic motor.