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:
Mar. 21, 1995
Filed:
Jan. 28, 1994
Olivier Doremus, Noyelle Vion, FR;
Valeo, Paris, FR;
Abstract
A declutching device comprises an hydraulic actuator, a preloading spring which permanently bias the movable member of the hydraulic actuator towards its retracted position with respect to the fixed member of the actuator, and a retaining element for retaining the movable member in its extended position with respect to the fixed member. The retaining element comprises a locking ring which is held under precompression in a groove formed in the movable member of the actuator, while another groove, with a stepped base, is formed in the fixed member of the actuator. The base of this latter groove comprises at least two steps, offset axially from each other and having different diameters, namely a first step for holding the locking ring at least partially engaged in the groove of the movable member, and a step which is adapted to enable it to escape automatically from this groove.