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:
Jul. 10, 2001
Filed:
May. 26, 1999
Applicant:
Inventors:
Gerd Goedelmann, Weingarten, DE;
Hans-Michael Winter, Dudenhofen, DE;
Bernhard Staudenmayer, Dudenhofen, DE;
Lothar Keller, Stuttgart, DE;
Assignee:
Filterwerk Mann & Hummel GmbH, Ludwigsburg, DE;
Primary Examiner:
Int. Cl.
CPC ...
B23P 2/304 ; B21C 3/712 ;
U.S. Cl.
CPC ...
B23P 2/304 ; B21C 3/712 ;
Abstract
An apparatus for forming a helical tube (,), including a first stamping station for producing a flange on a metal strip (,), a forming tool (,) in which the flanged metal strip is formed to a helical configuration and adjacent side edges are crimped together to produce a tube, a cutting arrangement (,) which cuts the tube into predetermined lengths, and a mechanical-optoelectronic measuring arrangement (,) for determining the length of the helical tube (,) to be cut.