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. 26, 2008
Filed:
Jul. 14, 2005
Hubert Beck, Eitorf, DE;
Hubert Beck, Eitorf, DE;
ZF Friedrichshafen AG, Friedrichshafen, DE;
Abstract
A boot for a hydraulic, hydropneumatic or pneumatic piston-cylinder unit, in particular for vibration dampers or spring struts for vehicles, covers a portion of a piston rod that projects from the cylinder of the piston-cylinder unit. To protect against dirt and/or damage, the boot is arranged between the end of the piston rod and the cylinder. The interior space of the boot undergoes a change in volume due to the relative movement of the piston rod and cylinder with respect to one another. At least one flow connection is provided which leads to the interior space of the boot and allows for air flow in and/or out of the interior space. The at least one flow connection is at least partly covered by an area of the boot.