Patent · US Expired

Arrangement for shaping a helical tube

US6256851A · kind A · utility

3Cited by

8References

9Claims

0Family size

Assignee

Filterwerk Mann & Hummel GmbH · DE

Inventors

Gerd Goedelmann · Weingarten, DE
Hans-Michael Winter · Dudenhofen, DE
Bernhard Staudenmayer · Dudenhofen, DE
Lothar Keller · Stuttgart, DE

Key dates

Filing date	May 26, 1999
Grant date	Jul 10, 2001
Priority date	—
Expiry date	May 26, 2019

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY10T29/5185
WIPO fieldMachine tools
WIPO sectorMechanical engineering

Abstract

An apparatus for forming a helical tube (18), including a first stamping station for producing a flange on a metal strip (11), a forming tool (17) 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 (19) which cuts the tube into predetermined lengths, and a mechanical-optoelectronic measuring arrangement (20) for determining the length of the helical tube (18) to be cut.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.