| ARCELORMITTAL TUBULAR PRODUCTS CANADA INC. Patent applications |
| Patent application number | Title | Published |
|---|
| 20110260423 | TWIST-AXLE WITH LONGITUDINALLY-VARYING WALL THICKNESS - The invention relates to a twist-axle that includes a cross-beam member and two trailing arms, each trailing arm rigidly secured to the cross-beam member in one of two connection regions of the cross-beam member or formed integrally with and extending from one of the two connection regions. The cross-beam member is formed from a tubular blank and has a torsionally elastic central portion and two torsionally stiff connection regions. The cross-beam member has a wall thickness that varies longitudinally along the length of the cross-beam member from the torsionally elastic central portion to each of the torsionally stiff connection regions. | 10-27-2011 |
| 20090038364 | TUBULAR ARTICLES WITH VARYING WALL THICKNESS - A method for manufacturing a one-piece axle tube housing with localized sections of increased wall thickness includes providing a tube blank, inserting a mandrel having a reduced diameter profile, passing the tube through an extrusion die to conform the tube to the shape of the mandrel; and extraction of the mandrel from the tube to cause outward deformation of the tube at specific locations. A further reducing step may be used to form the final desired profile, including reduced inner and outer diameters along sections of the axle tube housing. | 02-12-2009 |
