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. 12, 2002
Filed:
Feb. 28, 2000
André Tobiasz, Epinay-sur-Seine, FR;
Valeo, Paris, FR;
Abstract
The invention concerns a hydraulic, in particular clutching, actuator for receiving control data from a hydraulic circuit in the form of pressure variations. The concentric-type actuator ( ) for hydraulic control comprises a fixed part ( ) consisting of an external body ( ) and a guide tube ( ), both cylindrical and coaxial, and a piston ( ) mounted sliding coaxially to the fixed part ( ) and defining therein a chamber with variable volume ( ) designed to be connected to the hydraulic control hydraulic transmitter, the external body ( ) comprises on its internal face ( ) a groove wherein is inserted a radial edge ( ) with which the guide tube ( ) is provided at one of its ends and which partially constitutes the variable volume chamber ( ) bottom.