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:
Apr. 05, 2011
Filed:
Feb. 22, 2008
Applicant:
Norbert Ackermann, Eitorf, DE;
Inventor:
Norbert Ackermann, Eitorf, DE;
Assignee:
ZF Friedrichshafen AG, Friedrichshafen, DE;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F16F 9/04 (2006.01);
U.S. Cl.
CPC ...
Abstract
Pressure vessel filled with at least one medium, where a gas mass enclosed by an envelope is pre-pressurized by a fluid, especially for volume compensation in piston-cylinder assemblies. The separating means is provided in an annular space, which is bounded by an interior wall and an exterior wall, and where at least one port for the annular space and at least one port for the enclosed gas mass are provided. The ports are aligned when the piston-cylinder assembly is inserted in the pressure vessel, which moves seals into their sealing positions.