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Class Information
Number: 72/49
Name: Metal deforming > By tool-couple pressing together adjacent surface portions of same work (e.g., tube-seamer) > To form helically-seamed tube
Description: Subject matter wherein a tool couple joins together the margins of a piece of work that has been deformed into a helical coil having adjacent side margins, whereby the product formed is a conduit or pipe having a helical joint.
Sub-classes under this class:
Patents under this class:
| Patent Number |
Title Of Patent |
Date Issued |
| 7574886 |
Apparatus for producing helically corrugated metal pipe and related method |
Aug. 18, 2009 |
| 7549310 |
Mandrel assembly for manufacturing tubular products |
Jun. 23, 2009 |
| 7451629 |
Spiral pipe machine |
Nov. 18, 2008 |
| 7451631 |
Spiral pipe machine |
Nov. 18, 2008 |
| 7404308 |
Apparatus for producing helically corrugated metal pipe and related method |
Jul. 29, 2008 |
| 7225654 |
Canasta for forming tubes of different diameters |
Jun. 5, 2007 |
| 7137281 |
Process and apparatus for forming oversized circular pipe |
Nov. 21, 2006 |
| 7117702 |
Mobile pipe mill |
Oct. 10, 2006 |
| 7089772 |
Adjustable horn for spiral pipe forming machine |
Aug. 15, 2006 |
| 6701762 |
Canasta for forming tubes of different diameters |
Mar. 9, 2004 |
| 6497633 |
Continuous manufacture of push type CVT belt bands utilizing spiral winding & welding to form tube and slitting tube to form band of predetermined width |
Dec. 24, 2002 |
| 6460236 |
Apparatus for producing wrapped slip tubes |
Oct. 8, 2002 |
| 6453710 |
Method and apparatus for manufacturing a helically-wound lock-seam tube having air nozzles |
Sep. 24, 2002 |
| 6339945 |
Apparatus for forming tapered spiral tubes |
Jan. 22, 2002 |
| 6295853 |
Spirally formed pipe cutter with driving mechanism to actively rotate inner knife |
Oct. 2, 2001 |
| 6282933 |
Method of manufacturing a metal carcass for a flexible pipe or umbilical |
Sep. 4, 2001 |
| 6256851 |
Arrangement for shaping a helical tube |
Jul. 10, 2001 |
| 6192726 |
System and method for corrugating spiral formed pipe |
Feb. 27, 2001 |
| 6145732 |
Cylindrical helical seamed tube and method and apparatus therefore |
Nov. 14, 2000 |
| 6067829 |
Wire-spiralling machine |
May. 30, 2000 |
| 6006565 |
Hydraulically efficient ribbed pipe and method of making thereof |
Dec. 28, 1999 |
| 6000261 |
Method and apparatus for portable spiral pipe manufacturing |
Dec. 14, 1999 |
| 5881442 |
Apparatus for making a double-walled structure |
Mar. 16, 1999 |
| 5860305 |
Pipe cutter with dual outer cutting knives and method |
Jan. 19, 1999 |
| 5768928 |
Method of making an hydraulically efficient ribbed pipe |
Jun. 23, 1998 |
| 5737832 |
In and relating to machines for forming helically wound lock-seam tubing having multiple wall thickness |
Apr. 14, 1998 |
| 5636541 |
Apparatus for forming and cutting spiral pipe |
Jun. 10, 1997 |
| 5609055 |
Method and apparatus for cutting and notching a hollow pipe |
Mar. 11, 1997 |
| 5606884 |
Method and apparatus for producing helically-wound lock-seam tubing with reduced lubrication |
Mar. 4, 1997 |
| 5477717 |
Apparatus for cutting helically wound metal tubing |
Dec. 26, 1995 |
| 5257521 |
Apparatus and method for cutting spiral pipe |
Nov. 2, 1993 |
| 5193374 |
Apparatus for cutting spiral pipe |
Mar. 16, 1993 |
| 5108283 |
Apparatus for winding pipes |
Apr. 28, 1992 |
| 5105639 |
Apparatus for forming spiral pipe |
Apr. 21, 1992 |
| 5079938 |
Process and apparatus for producing a helically seamed pipe |
Jan. 14, 1992 |
| 5074138 |
Method of making bellows pipe |
Dec. 24, 1991 |
| 5036690 |
Flexible pipe end crimping apparatus |
Aug. 6, 1991 |
| 5020351 |
Apparatus for flattening irregular circumferential surfaces in spirally formed pipe |
Jun. 4, 1991 |
| 4987759 |
Machine for manufacturing helically-seaming tubing |
Jan. 29, 1991 |
| 4924684 |
Apparatus for forming and cutting spiral pipe |
May. 15, 1990 |
| 4895011 |
Continuously balanced apparatus for storing and dispensing elongate materials |
Jan. 23, 1990 |
| 4823579 |
Apparatus for cutting hollow pipes |
Apr. 25, 1989 |
| 4783980 |
Apparatus for making helically wound interlocked flexible pipe |
Nov. 15, 1988 |
| 4738008 |
Apparatus for forming a non-rotating metal strip helix |
Apr. 19, 1988 |
| 4724596 |
Method of making interlocked metal tube |
Feb. 16, 1988 |
| 4719679 |
Method of manufacturing tubes for use in a muffler for internal combustion engines |
Jan. 19, 1988 |
| 4711110 |
Apparatus for crimping pipe |
Dec. 8, 1987 |
| 4706481 |
Apparatus for cutting hollow pipe |
Nov. 17, 1987 |
| 4622838 |
Apparatus for manufacturing flexible corrugated tubes |
Nov. 18, 1986 |
| 4616495 |
Helically-formed pipe winding machine |
Oct. 14, 1986 |
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