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Class Information
Number: 72/59
Name: Metal deforming > By application of fluent medium, or energy field > With actuated tool engaging work > Expanding hollow work > Corrugating tubular work
Description: Subject matter comprising a step of, or means for, the formation of two or more axially spaced, substantially identical, annular enlargements in cylindrical work.
Patents under this class:
| Patent Number |
Title Of Patent |
Date Issued |
| 7550189 |
Variable stiffness structure |
Jun. 23, 2009 |
| 7543471 |
Waste gas heat exchanger |
Jun. 9, 2009 |
| 7080436 |
Method of manufacturing an axially collapsible driveshaft |
Jul. 25, 2006 |
| 7013697 |
Method for expanding a tubular blank |
Mar. 21, 2006 |
| 7007532 |
Process for the production of tubular structural parts fabricated from PGM materials and having circumferential undulating bulges |
Mar. 7, 2006 |
| 6912884 |
Hydroforming process and apparatus for the same |
Jul. 5, 2005 |
| 6598442 |
Production of a component for reducing the effects of an external mechanical impact, and the component produced in this way |
Jul. 29, 2003 |
| 6564606 |
Manufacturing method and manufacturing apparatus for metallic bellows |
May. 20, 2003 |
| 6442987 |
Method of producing a shaft from a piece of tubing, apparatus for making a shaft from a piece of tubing and camshaft produced from a piece of tubing |
Sep. 3, 2002 |
| 6401508 |
Components of a hydroforming machine |
Jun. 11, 2002 |
| 6176114 |
Method and apparatus for sequential axial feed hydroforming |
Jan. 23, 2001 |
| 6044678 |
Method and device for manufacturing a tubular hollow body with spaced-apart increased diameter portions |
Apr. 4, 2000 |
| 5775153 |
Hydroforming offset tube |
Jul. 7, 1998 |
| 5619878 |
Method and device for manufacturing a corrugated metal pipe |
Apr. 15, 1997 |
| 5337590 |
Method and apparatus for bending tubes using split bend die |
Aug. 16, 1994 |
| 5214948 |
Forming metal parts using superplastic metal alloys and axial compression |
Jun. 1, 1993 |
| 5058409 |
Apparatus for manufacturing wrinkled pipes |
Oct. 22, 1991 |
| 5056346 |
Method and device for manufacturing bellows pipe |
Oct. 15, 1991 |
| 5031433 |
Method and apparatus for manufacturing a pulley |
Jul. 16, 1991 |
| 5007267 |
Method and apparatus for manufacturing bellows pipe |
Apr. 16, 1991 |
| 4996857 |
Method and an apparatus for manufacturing a metallic bellows |
Mar. 5, 1991 |
| 4827747 |
Method for producing a bellows with oval cross section and apparatus for carrying out the method |
May. 9, 1989 |
| 4729806 |
Method for making tubes having low weight |
Mar. 8, 1988 |
| 4488341 |
Method of making a fluid pressure actuator |
Dec. 18, 1984 |
| 4453304 |
Method of producing a corrugated, multi-ply metal bellows |
Jun. 12, 1984 |
| 4364252 |
Method for the manufacture of diaphragm bellows |
Dec. 21, 1982 |
| 4319471 |
Apparatus for producing a corrugated tube |
Mar. 16, 1982 |
| 4289007 |
Apparatus for hydraulically forming sheet metal pulleys |
Sep. 15, 1981 |
| 4286450 |
Apparatus for manufacturing corrugated tubes |
Sep. 1, 1981 |
| 4275579 |
Apparatus for manufacture of corrugated pipes |
Jun. 30, 1981 |
| 4267718 |
Apparatus for producing a tube with successive corrugations of different radial extensions and spacings |
May. 19, 1981 |
| 4237713 |
Apparatus for producing a tube with successive corrugations |
Dec. 9, 1980 |
| 4193280 |
Apparatus for the manufacture of expansion bellows |
Mar. 18, 1980 |
| 4179910 |
Apparatus for manufacturing deformable expansion bellows for pipe-work |
Dec. 25, 1979 |
| 4109365 |
Method for forming contoured tubing |
Aug. 29, 1978 |
| 4065947 |
Compensatory expansion bellows and its production |
Jan. 3, 1978 |
| 4003231 |
Rotary machine for manufacturing hollow articles |
Jan. 18, 1977 |
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