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:
Jan. 22, 2008
Filed:
Aug. 02, 2005
Thomas Zitterbart, Dietenheim, DE;
Thomas Zitterbart, Dietenheim, DE;
Liebherr-Hydraulikbagger GmbH, Kirchdorf/Iller, DE;
Abstract
The present application relates to a hydraulic system having a hydraulic supply, a consumer and having a control valve, which is in communication with the consumer by means of a first line and a second line, it being possible for the control valve to be switched into different positions, and the control valve connecting the hydraulic supply to the first line in at least one position. Furthermore, a first valve, which is in communication with the first line and the second line, is provided. Moreover, a third line, serving as a further return, which is in communication with the first valve and does not lead to or open out in the control valve, is also provided, the first valve being connected in such a manner that when pressure is applied to the first line it opens up a connection between the second and third lines.