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:
Jun. 23, 1992
Filed:
Apr. 24, 1991
Applicant:
Inventor:
Jean-Paul Bouhours, Arrou, FR;
Assignee:
Hutchinson, , FR;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
F16M / ;
U.S. Cl.
CPC ...
2671 / ; 2671 / ; 248562 ;
Abstract
A hydraulic antivibratory device is disclosed in which the restricted passage joining together the two chambers (A, B) comprises three portions (4, 5, 6) mounted in parallel, namely a first portion (4) whose flow section remains constant and two other portions (5, 6) whose flow sections are adjustable successively from a zero value to a maximum value by two rotary cams (9, 10) mounted on the same shift (11): the device thus provides good damping for oscillations whose frequencies increase (for example from 5 to 20 Hz) when the shaft is rotating.