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. 31, 2010
Filed:
Dec. 13, 2005
Georg Jacobs, Ulm, DE;
Johannes Honnef, Ulm, DE;
Georg Jacobs, Ulm, DE;
Johannes Honnef, Ulm, DE;
Brueninghaus Hydromatik GmbH, Elchingen, DE;
Abstract
The invention relates to a hydraulic drive, comprising a hydraulic cylinder (), divided into a first operating pressure chamber () and a second operating pressure chamber (), by an operating piston (). The hydraulic drive further comprises a closed hydraulic circuit (), with a first hydraulic pump (), connected to the first operating pressure chamber () via a first working line (), by means of a first connector () and to the second operating pressure chamber () via a second working line (), by means of a second connector (). In addition, an open hydraulic circuit () is provided, with a second hydraulic pump (), connected to the first operating pressure chamber (), by means of a third connector (). A fourth connector () on the second hydraulic pump () is connected to a hydraulic reservoir element ().