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Class Information
Number: 72/159
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 work-contacting wiper and moving, work-holding form > And work-complementing gripper faces (e.g., contoured)
Description: Subject matter including work-holding elements on the form, said element having surfaces which are nonplanar and match or fit corresponding surfaces of the gripped portion of the workpiece.
Patents under this class:
| Patent Number |
Title Of Patent |
Date Issued |
| 7383716 |
Tube bender and method of using same |
Jun. 10, 2008 |
| 7299671 |
Bending device for bending machine |
Nov. 27, 2007 |
| 7293444 |
Bending apparatus for rod-shaped and tubular workpieces |
Nov. 13, 2007 |
| 7269988 |
Bending machine |
Sep. 18, 2007 |
| 7150175 |
Clamp assembly for bend arm of tube bending machine |
Dec. 19, 2006 |
| 7131306 |
Bending machine die provided with a vise for clamping an elongated workpiece to be bent |
Nov. 7, 2006 |
| 7017380 |
Bending assembly for bending machine |
Mar. 28, 2006 |
| 7010951 |
Feeding mechanism of an automatic pipe bending machine |
Mar. 14, 2006 |
| 6976378 |
Bending machine |
Dec. 20, 2005 |
| 6883360 |
Tube bender and method of using same |
Apr. 26, 2005 |
| 6220069 |
Method and apparatus for bending tubing |
Apr. 24, 2001 |
| 5979204 |
Quick change tooling method and apparatus |
Nov. 9, 1999 |
| 5950474 |
Bending apparatus |
Sep. 14, 1999 |
| 5918496 |
Adjustable clamp die for tube bending machine |
Jul. 6, 1999 |
| 5916319 |
Method to cold-bend resin-coated ribbed steel pipes |
Jun. 29, 1999 |
| 5873278 |
Multi-row pipe bending apparatus |
Feb. 23, 1999 |
| 5694800 |
Perfected counterdie for pipe bending machines |
Dec. 9, 1997 |
| 5495740 |
Pipe bending machine |
Mar. 5, 1996 |
| 5469728 |
Shaped groove countermatrix for rotary groove pulley matrix and countermatrix bending head pipe bending machines |
Nov. 28, 1995 |
| 5345802 |
Shaped groove countermatrix for rotary groove pulley matrix and countermatrix bending head pipe bending machines |
Sep. 13, 1994 |
| 5315852 |
Rotary draw bending apparatus and method |
May. 31, 1994 |
| 5284041 |
Method for bending tubes using split die |
Feb. 8, 1994 |
| 5226305 |
Articulated split roller assembly for tube bender |
Jul. 13, 1993 |
| 5187963 |
Tube bending die |
Feb. 23, 1993 |
| 5010758 |
Bending machine |
Apr. 30, 1991 |
| 4899567 |
Method and apparatus for bending tubes with end fittings |
Feb. 13, 1990 |
| 4888971 |
Pipe bending machine |
Dec. 26, 1989 |
| 4821549 |
Tube bending machine |
Apr. 18, 1989 |
| 4788845 |
Pipe bending machine |
Dec. 6, 1988 |
| 4765168 |
Method and apparatus for bending tubing |
Aug. 23, 1988 |
| 4744233 |
Apparatus for bending rectangular tubes |
May. 17, 1988 |
| 4691555 |
Tube bending tool |
Sep. 8, 1987 |
| 4567745 |
Tube bending machine |
Feb. 4, 1986 |
| 4563891 |
Pipe bending machine |
Jan. 14, 1986 |
| 4546632 |
Portable conduit bending apparatus |
Oct. 15, 1985 |
| 4537053 |
Pipe bending machine |
Aug. 27, 1985 |
| 4495788 |
Multiple curvature bender |
Jan. 29, 1985 |
| 4479373 |
Tube bending assembly, particularly for thin wall and small and medium diameter metal tubes |
Oct. 30, 1984 |
| 4416136 |
Pipe-bending machine |
Nov. 22, 1983 |
| 4249407 |
Apparatus for bending steel tubes |
Feb. 10, 1981 |
| 4178788 |
Adjustable clamp die |
Dec. 18, 1979 |
| 4112728 |
Device for bending pipes |
Sep. 12, 1978 |
| 4078411 |
Floating clamp die |
Mar. 14, 1978 |
| 4038853 |
Tube bending machine |
Aug. 2, 1977 |
| 4003233 |
Bending and straightening mechanism for mine roof bolts |
Jan. 18, 1977 |
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