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. 20, 1986
Filed:
Aug. 25, 1983
Applicant:
Inventors:
Ludwig Axthammer, Hambach, DE;
Felix Wossner, Schweinfurt, DE;
Assignee:
Fichtel & Sachs AG, Schweinfurt, DE;
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
F16F / ; F16F / ;
U.S. Cl.
CPC ...
188279 ; 188299 ; 18832217 ; 251 12 ;
Abstract
In a double-tube vibration damper the working chamber adjacent the piston rod guide member is connected to the compensation chamber surrounding the cylinder through a by-pass valve. The by-pass valve is mounted in the cylinder or in a structural member stationary with respect to the cylinder. The by-pass valve has a cross-sectional area variable in dependency on a pressure signal or an electric signal. The damping characteristics of the vibration damper can be varied e.g. in dependency on the load charged onto the vehicle of which the vibration damper is a part.