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. 16, 2013
Filed:
Jul. 24, 2009
Sebastian Stanger, Reutlingen, DE;
Bernd Wager, Kirchdorf/Iller, DE;
Dirk Asam, Ulm, DE;
Hans-peter Lavergne, Trunkelsberg, DE;
Sebastian Stanger, Reutlingen, DE;
Bernd Wager, Kirchdorf/Iller, DE;
Dirk Asam, Ulm, DE;
Hans-Peter Lavergne, Trunkelsberg, DE;
Liebherr-Hydraulikbagger GmbH, Kirchdorf, DE;
Abstract
The present invention relates to a piece of working equipment, in particular to an excavator or to a machine for the transfer of material, having an element movable via at least one working hydraulic cylinder, wherein at least one energy recovery hydraulic cylinder is provided for the recovery of energy from the movement of the movable element. In accordance with the invention, the energy recovery hydraulic cylinder is filled with gas at the bottom side and has a hollow piston rod.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile