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. 01, 2005
Filed:
Oct. 26, 1999
Applicants:
Raimund Weiffen, Windeck, DE;
Wolfgang Hertz, St. Augustin, DE;
Inventors:
Raimund Weiffen, Windeck, DE;
Wolfgang Hertz, St. Augustin, DE;
Assignee:
Mannesmann Sachs AG, Eitorf, DE;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F16F009/348 ; F16F009/00 ;
U.S. Cl.
CPC ...
Abstract
A vibration damper with variable damping force, includes a cylinder filled with damping medium and in which a piston fastened to a piston rod axially moveably therein. The piston divides the working cylinder into two working spaces. The damping force for the directions of rebound and compression are influenced by nonreturn valves acting in the respective directions. A damping valve of variable damping action is additionally provided in series with each of the nonreturn valves so that the damping valve is active in both the rebound and compression directions.