US 6,339,945 B2 · Apparatus for forming tapered spiral tubes

Abstract

Apparatus for forming tapered spiral tubes from strips, is disclosed. The apparatus comprises a spiral tube forming system for forming a strip into a spiral tube; a strip infeed system adapted for feeding a strip to the pipe forming system; and computer-controlled means for continuously varying the angular orientation of the tube forming system relative to the strip infeed system to selectively vary the diameter of the forming tube. The selective variation of the diameter includes linearly tapered and curved profiles, as well as constant (unchanging) diameter profiles and combinations thereof.

Claims0

Dependent claims

Claims aren’t available for this document.

Facts

Application

09/848,837Filed 3 May 2001

Published

US 2001/0018839 A16 Sep 2001

Granted

22 Jan 2002

Term ends

Not estimatedThe source records don’t support an estimate.

Classification5 codes

B21C 37/128
Making tubes or metal hoses with helically arranged seams: control or regulating devices
B21C 37/12
Of tubes or metal hoses; Combined procedures for making tubes, e.g. for making multi-wall tubes: making tubes or metal hoses with helically…
B21C 37/124
Making tubes or metal hoses with helically arranged seams: the tubes having a special shape, e.g. with corrugated wall, flexible tubes
B21C 37/126
Making tubes or metal hoses with helically arranged seams: supply, or operations combined with supply, of strip material

Apparatus for forming tapered spiral tubes

Life of this patent

Abstract

Claims0

Apparatus for forming tapered spiral tubes

Life of this patent

Abstract

Claims0