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:
Oct. 29, 1991
Filed:
Jul. 19, 1990
Daniel DuBos, Asnieres, FR;
Jean-Luc Salaud, Conflans Sainte Honorine, FR;
Jean-Pierre Bretaudeau, Chateaudun, FR;
Hutchinson, , FR;
Abstract
An improved hydraulic antivibratory device is disclosed intended to be inserted for damping and connection purposes between two rigid elements, comprising an annular frame (1) and a rigid hub (2), fixed respectively to the two rigid elements, a frustroconical elastomer spring (3) interposed between the frame and the hub, a flexible and sealed membrane (4) carried by the frame, a rigid intermediate wall (5) defining two chambers (A, B), a restricted passage (6) causing the two chambers to communicate permanently together and a liquid (L) contained in the two chambers and in the restricted passage. The hub comprises a shoe (11) which is too large to pass through a washer (8) of the frame and this shoe is connected to an annular zone of the intermediate dividing wall by a sealed bellows (12).