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:
Nov. 11, 2025
Filed:
Jul. 28, 2020
Siempelkamp Maschinen- Und Anlagenbau Gmbh, Krefeld, DE;
Fabian Köffers, Krefeld, DE;
Michael Schöler, Rheurdt, DE;
Klaus Schürmann, Juchen, DE;
Lothar Sebastian, Duisburg, DE;
Siempelkamp Maschinen- und Anlagenbau GmbH, Krefeld, DE;
Abstract
A method for pretensioning the membrane of a press, a) providing a press having a first pressing tool, a second pressing tool and a membrane, the first pressing tool and the second pressing tool are movable, the membrane connected to one of the pressing tools, a cavity for a working medium is formed between the membrane and the pressing tool, the cavity is sealed by at least one seal which presses onto the membrane with a sealing force; b) providing at least one workpiece including a matrix and fibres embedded therein; c) inserting the workpiece into the press; d) closing the press; e) subjecting the workpiece to pressure and/or to heat by means of the membrane, a cured shaped part is formed from the workpiece; and f) opening the press and removing the shaped part, which ensures a surface of the membrane is smooth.