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. 30, 2022
Filed:
Sep. 17, 2018
Jungheinrich Ag, Hamburg, DE;
Thomas Stolten, TremsbĂĽttel, DE;
Michael Knieriem, Bad Oldesloe, DE;
Jungheinrich AG, Hamburg, DE;
Abstract
The invention relates to an industrial truck () with a lift mast (), a hydraulic system () as well as a method for operating a hydraulic system (). The lift mast () of the industrial truck () is driven by a mast lift cylinder () and comprises at least one mast lift stage (). Furthermore, a free lift stage is present that is driven by a free lift cylinder () with which a load receiving means () can be displaced along the lift mast (). The industrial truck () comprises a hydraulic system () for supplying the at least one mast lift cylinder () and the at least one free lift cylinder () with a hydraulic fluid (), wherein the hydraulic system () is configured to at least at times simultaneously actuate the at least one mast lift cylinder () and the at least one free lift cylinder () in load lifting operation and/or in load lowering operation.