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:
Feb. 14, 2017
Filed:
Nov. 06, 2013
Applicant:
Hirschvogel Umformtechnik Gmbh, Denklingen, DE;
Inventors:
Rupert Turrina, Fuchstal, DE;
Hans Britzger, Denklingen, DE;
Assignee:
Hirschvogel Umformtechnik GmbH, Denklingen, DE;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B21D 19/00 (2006.01); B23P 15/00 (2006.01); B21K 21/12 (2006.01); B21K 23/04 (2006.01); B21K 25/00 (2006.01);
U.S. Cl.
CPC ...
B21D 19/00 (2013.01); B21K 21/12 (2013.01); B21K 23/04 (2013.01); B21K 25/00 (2013.01); B23P 15/00 (2013.01); Y10T 428/12264 (2015.01);
Abstract
An integral workpiece which has a duct located within a region which extends, for example in an annular manner, and formed about an axis of the workpiece. The workpiece has a form-fitting connection by which, when viewed in a cross section extending through the axis, the duct is closed. The form-fitting connection enables, in comparison with known manufacturing methods, particularly simple manufacturing of the workpiece. In particular, no welding or screwing is required for closing the duct.