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:
Oct. 20, 2026
Filed:
Apr. 29, 2022
Zf Friedrichshafen Ag, Friedrichshafen, DE;
Harun Tucovic, Schweinfurt, DE;
Eberhard Simon, Gochsheim, DE;
Barbara Ester, Schweinfurt, DE;
Artur Schell, Bad Neustadt a. d. Saale, DE;
Frank Gundermann, Schonungen, DE;
ZF FRIEDRICHSHAFEN AG, Friedrichshafen, DE;
Abstract
Motor vehicle vibration damper with at least one damper cylinder at least partially filled with a liquid damping medium; a piston rod axially movable to the longitudinal extension axis (L) of the damper and sections of which project into the damper cylinder; a piston rod guide surrounding the piston rod in the peripheral direction and seals off the damper cylinder; a gas-impermeable, shape-changing gas pressure container located in a compensation chamber inside the damper cylinder; a filling channel connecting the interior of the gas pressure container to the external environment; and a non-return valve at least indirectly connected to the gas pressure container and closes or opens the filling channel depending on gas pressure difference. The non-return valve is inside a gas-impermeable non-return valve housing connected to the piston rod guide.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile