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:
Jan. 02, 2007
Filed:
Apr. 08, 2004
Applicants:
Robert Pradel, Röthlein, DE;
Helmut Baalmann, Bergrheinfeld, DE;
Inventors:
Robert Pradel, Röthlein, DE;
Helmut Baalmann, Bergrheinfeld, DE;
Assignee:
ZF Sacha AG, Schweinfurt, DE;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F16F 9/44 (2006.01);
U.S. Cl.
CPC ...
Abstract
Vibration damper includes a cylinder filled with a damping medium in which a piston rod with a piston is guided in an axially movable manner, wherein the piston divides the cylinder into a work space on the piston rod side and a work space remote of the piston rod. A bypass connects at least one of the two work spaces with a first work chamber in a housing in which an axially movable separating piston separates the first work chamber from a second work chamber, the bypass being controlled by a switchable valve.