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Class Information
Number: 72/180
Name: Metal deforming > By deflecting successively-presented portions of work during bodily movement thereof (e.g., for coiling, levelling, curving or troughing material in movement) > By use of deflector arranged to bend work transversely of direction of work movement (e.g., troughing) > Including complementary roller-couple > Including plural, axially-spaced circumferential ribs and grooves
Description: Subject matter wherein the profile of each roller (i.e., the outline of the roller"s work-engaging surface at the plane) is an undulant line (i.e., is alternately convex and concave relative to the roller axis) and wherein the convexities and concavities of one roller profile interfit (or tend to interfit) with the concavities and convexities respectively of the other roller profile.
Patents under this class:
| Patent Number |
Title Of Patent |
Date Issued |
| 7404308 |
Apparatus for producing helically corrugated metal pipe and related method |
Jul. 29, 2008 |
| 7272968 |
Device for shaping corrugated fin |
Sep. 25, 2007 |
| 6928847 |
Roll forming system for forming flanges in strip material |
Aug. 16, 2005 |
| 6711803 |
Method of joining steel products, method of processing junction surfaces of steel products, and reinforcing member |
Mar. 30, 2004 |
| 6453711 |
Flat turbulator for a tube and method of making same |
Sep. 24, 2002 |
| 6289707 |
Apparatus for manufacturing roofing or cladding panels |
Sep. 18, 2001 |
| 6138354 |
Method of manufacturing a corrugated plate by rolling for use as an inner fin of a heat exchanger |
Oct. 31, 2000 |
| 5918497 |
Metalworking method wherein formed configuration locates blank |
Jul. 6, 1999 |
| 5394722 |
Apparatus for forming profiles on strip materials |
Mar. 7, 1995 |
| 5295303 |
Method of making a corrugated fin |
Mar. 22, 1994 |
| 5259228 |
Rolling mill |
Nov. 9, 1993 |
| 5229055 |
Method and apparatus of producing hollow profiles from multilayer starting material |
Jul. 20, 1993 |
| 5109688 |
Rolling mill |
May. 5, 1992 |
| 5056348 |
Method of making a profiled sheet metal building unit |
Oct. 15, 1991 |
| 4986105 |
Machine for corrugating sheet metal or the like |
Jan. 22, 1991 |
| 4969346 |
Apparatus for producing cold roll-formed structures |
Nov. 13, 1990 |
| 4962622 |
Profiled sheet metal building unit and method for making the same |
Oct. 16, 1990 |
| 4959986 |
Apparatus for cutting a wide sheet of metal material into a plurality of narrow strips |
Oct. 2, 1990 |
| 4876837 |
Corner bead structure |
Oct. 31, 1989 |
| 4875354 |
Machine for adjustable longitudinal corrugating of sheet materials |
Oct. 24, 1989 |
| 4862666 |
Profiled sheet for building purposes |
Sep. 5, 1989 |
| 4845970 |
Process and apparatus for regulating the synchronization of a pair of rolls |
Jul. 11, 1989 |
| 4791800 |
Roll forming process and apparatus for making ribs in strip material |
Dec. 20, 1988 |
| 4770018 |
Method for producing cold roll-formed structures |
Sep. 13, 1988 |
| 4689261 |
Rounded corrugated sheet and method and apparatus for its manufacture |
Aug. 25, 1987 |
| 4580388 |
Angled profile |
Apr. 8, 1986 |
| 4531270 |
Method for the manufacture of metal vanes for turbomachinery |
Jul. 30, 1985 |
| 4526024 |
Apparatus for forming elongated sheet metal panels |
Jul. 2, 1985 |
| 4455855 |
Forming rolls of pipe-producing apparatus |
Jun. 26, 1984 |
| 4411146 |
Method and apparatus for the straightening and stiffening of starting sheets in electrolytic refining plants |
Oct. 25, 1983 |
| 4317350 |
Corrugated plate having variable material thickness and method for making same |
Mar. 2, 1982 |
| 4295353 |
Mill stand for forming discontinuous longitudinal deformations in sheet metal |
Oct. 20, 1981 |
| 4269055 |
Large profile sheet metal corrugator |
May. 26, 1981 |
| 4265103 |
Relating to cold sheet metal roll forming apparatus |
May. 5, 1981 |
| 4241146 |
Corrugated plate having variable material thickness and method for making same |
Dec. 23, 1980 |
| 4233833 |
Method for stretching sheet metal and structural members formed therefrom |
Nov. 18, 1980 |
| 4096720 |
Apparatus for making corrugated flexible metal tubing |
Jun. 27, 1978 |
| 4058996 |
Machine for the manufacture of helically wound metal duct or pipe |
Nov. 22, 1977 |
| 3940965 |
Method and apparatus for forming corrugating pipe |
Mar. 2, 1976 |
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