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:
Dec. 19, 2006
Filed:
May. 15, 2003
Applicant:
Keijo Hellgren, Västerås, SE;
Inventor:
Keijo Hellgren, Västerås, SE;
Assignee:
Avure Technologies AB, Vasteras, SE;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B21D 22/12 (2006.01); B29C 17/04 (2006.01); B30B 5/02 (2006.01);
U.S. Cl.
CPC ...
Abstract
The present invention relates to a press of pressure cell type, a tray for use in a press of pressure cell type and a method. The tray comprises a tray frame, which defines a space for arranging a forming tool and/or a work-piece. Prestressing means are arranged on the external surface of the tray frame and induce a compressing prestress which acts in planes parallel to the plane of the tray. The tray frame presents a curvature along its entire circumference.