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:
Sep. 10, 2002
Filed:
Feb. 20, 2001
Jürgen Osterried, Pfronten, DE;
Peter Schmied, Schongau, DE;
Hoerbiger Hydraulik GmbH, Schongau, DE;
Abstract
An arrangement for hydraulic actuation of a movable component on vehicles, particularly a vehicle top, trunk lid, a cover or the like, includes at least one double-action working cylinder ( ) whose working chambers are connected to a pressure source ( ) via a pressure line ( ) or whose working chambers are at least temporarily connectable thereto through a switching valve ( ). To make possible an automatic emergency operation of the normally hydraulic operated vehicle component in a simple and secure manner during failure of the pressure source, and in spite of the small available space and the mounting site with its difficult accessibility, a check valve ( ) is inserted into the pressure line ( ) blocking in the direction of the pressure source ( ) and a pressure relief line ( ) originates at a location between the check valve ( ) and the switching valve arrangement for the working cylinder ( ) whereby a shut-off element ( ) is inserted in the pressure relief line that opens when the pressure of the pressure source drops.