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Class Information
Number: 72/150
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 > With core inside hollow workpiece
Description: Subject matter including a member that substantially contacts all of the interior periphery of that section of hollow work* that is engaged by the deforming instrumentality.
Patents under this class:
| Patent Number |
Title Of Patent |
Date Issued |
| 7594417 |
Apparatus for wiper die monitoring |
Sep. 29, 2009 |
| 7553148 |
Production apparatus and production method for producing bent portion of multi-channel tube |
Jun. 30, 2009 |
| 7360385 |
Quick change bend tooling bolster |
Apr. 22, 2008 |
| 7234333 |
Machine for bending rod-shaped or tubular workpieces |
Jun. 26, 2007 |
| 7171835 |
Bending apparatus |
Feb. 6, 2007 |
| 7140224 |
Moderate temperature bending of magnesium alloy tubes |
Nov. 28, 2006 |
| 7131313 |
Bending method and mandrel of multi-layered pipe |
Nov. 7, 2006 |
| 7082798 |
Pipe bending machine |
Aug. 1, 2006 |
| 7040133 |
Transmission device for a tube bending machine |
May. 9, 2006 |
| 7032422 |
Pipe bending processing apparatus and pipe bending processing method |
Apr. 25, 2006 |
| 7017380 |
Bending assembly for bending machine |
Mar. 28, 2006 |
| 7010951 |
Feeding mechanism of an automatic pipe bending machine |
Mar. 14, 2006 |
| 6941787 |
Bending device for thin-walled metal pipes |
Sep. 13, 2005 |
| 6805011 |
Sensor for recording extension and stress in solid material |
Oct. 19, 2004 |
| 6718811 |
Process for producing a guide tube of a nuclear reactor fuel assembly, mandrel for forming the guide tube, and the guide tube obtained |
Apr. 13, 2004 |
| 6658912 |
Bending block for a bending device |
Dec. 9, 2003 |
| 6588245 |
Roll gap control for coiler |
Jul. 8, 2003 |
| 6347539 |
Bending method for pipe material |
Feb. 19, 2002 |
| 6189354 |
Method and modular-multistation device for folding profiles |
Feb. 20, 2001 |
| 6155091 |
Mandrel assembly for tube-bending apparatus |
Dec. 5, 2000 |
| 6009737 |
Tube bender |
Jan. 4, 2000 |
| 5979204 |
Quick change tooling method and apparatus |
Nov. 9, 1999 |
| 5937686 |
Bending apparatus for hollow double-structured pipe |
Aug. 17, 1999 |
| 5860307 |
Method and apparatus for forming a bent pipe |
Jan. 19, 1999 |
| 5823031 |
Method and apparatus for bulge forming and bending tubes |
Oct. 20, 1998 |
| 5775157 |
Swinging self-positioning support for pipe bending machines |
Jul. 7, 1998 |
| 5749255 |
Bending device for hollow double-structured pipe |
May. 12, 1998 |
| 5632176 |
Programmable pressure controlled mandrel extractor for tube bending machine |
May. 27, 1997 |
| 5588505 |
Cleaning attachment for internal tube mandrel |
Dec. 31, 1996 |
| 5586462 |
Device and method for forming bent pipe of non-annular cross-section |
Dec. 24, 1996 |
| 5483809 |
Process for bending a metal tube to a small radius of curvature and a bent metal tube |
Jan. 16, 1996 |
| 5406821 |
Tube bending apparatus and method |
Apr. 18, 1995 |
| 5390538 |
Process for bending metal hollow sections and apparatus for carrying out the process |
Feb. 21, 1995 |
| 5379624 |
Slaved tube length control for hairpin bender |
Jan. 10, 1995 |
| 5337590 |
Method and apparatus for bending tubes using split bend die |
Aug. 16, 1994 |
| 5333481 |
Apparatus for spatial uncoiling and stretch-bending process in combination with a bending mandrel station |
Aug. 2, 1994 |
| 5214950 |
Method and apparatus for bending a multiple tube |
Jun. 1, 1993 |
| 5195343 |
Pusher apparatus for multi-axis tube bender |
Mar. 23, 1993 |
| 5142895 |
Method for bending tubes |
Sep. 1, 1992 |
| 5036692 |
Method for bending pipes and apparatus therefor |
Aug. 6, 1991 |
| 4959984 |
Precision bending apparatus |
Oct. 2, 1990 |
| 4916952 |
Mandrel for bending pipes |
Apr. 17, 1990 |
| 4757702 |
Bending and twisting apparatus and method for printing machine threading tube |
Jul. 19, 1988 |
| 4744233 |
Apparatus for bending rectangular tubes |
May. 17, 1988 |
| 4732025 |
Precision bending apparatus and process |
Mar. 22, 1988 |
| 4689981 |
Draw-bending method |
Sep. 1, 1987 |
| 4625531 |
Bending machine |
Dec. 2, 1986 |
| 4608849 |
Bending apparatus |
Sep. 2, 1986 |
| 4585114 |
Apparatus for the lateral transfer of mandrels in a tube rolling mill |
Apr. 29, 1986 |
| 4563891 |
Pipe bending machine |
Jan. 14, 1986 |
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