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. 01, 2013
Filed:
Sep. 12, 2008
Markus Resch, Hofstetten-Gruenau, AT;
Rudolf Scheidl, Erlauf, AT;
Peter Ladner, Leonding, AT;
Karl Ladner, Linz, AT;
Markus Resch, Hofstetten-Gruenau, AT;
Rudolf Scheidl, Erlauf, AT;
Peter Ladner, Leonding, AT;
Karl Ladner, Linz, AT;
TRUMPF Maschinen Austria GmbH & Co. KG., Pasching, AT;
Abstract
The invention relates to a drive device () for a bending press, in particular a folding press (), comprising a press frame (), a press table () and a press beam () that can be adjusted relative to the press table () via a hydraulic system () comprising a hydraulic pump (), controlled drive motor (), switch and control means and pressure lines and at least one pressure cylinder () which can be supplied with at least one pressure medium. The hydraulic system () forms a closed system together with a ring line () comprising the hydraulic pump (), control valves () and a pressure store (). The ring line comprises a first line section () between a pressure chamber () of the pressure cylinder () and the hydraulic pump () and a second line section () between an additional pressure chamber () of the pressure cylinder () and the hydraulic pump (). The pressure store () can optionally be in fluid connection via at least one of the control valves () with the first line section () or the second line section () to take up or release a storage volume of the pressure medium.