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:
Aug. 28, 2018
Filed:
Apr. 27, 2015
Zf Friedrichshafen Ag;
Andreas Förster, Schweinfurt, DE;
ZF Friedrichshafen AG, Friedrichshafen, DE;
Abstract
A vibration damper includes at least one tube element and a piston which is displaceable in axial direction in the tube element, a piston rod connected to the piston, and a damping force generating device, wherein the piston divides the working space in the interior of the tube element into a first working space on the piston rod side and a second working space remote of the piston rod, and wherein a hydraulic transmission element is arranged in or at the piston, and the transmission behavior of the hydraulic transmission element depends on the movement of the piston or of the piston rod, wherein the hydraulic transmission element encloses a compensation volume. The size of the compensation volume of the transmission element depends on the annular area of the piston which is the difference of the cross-sectional area of the piston and the cross-sectional area of the piston rod.