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| Number | Title | Issue Date |
| 6872264 | Road wheel composition and method for manufacturing road wheel using the same A road wheel composition having high surface hardness and high strength, which is manufactured by a heat treatment of a metal powder containing Fe as a main component, C, Si, Mn, P, S, Al, Ti, N, Cr, and B, and a method for manufacturing a road wheel for an automobi... | 03/29/2005 |
| 6746064 | Composite wheel for tracked vehicles The present invention relates to a method of manufacturing an all metal, single or dual, flanged composite railroad wheel for rollingly engaging a metal rail. A unitary metal railroad wheel having at least one radially extending wheel flange, for intermittently enga... | 06/08/2004 |
| 6679535 | Safety wheel, method of manufacturing such a wheel and bogie equipped with such a wheel This invention relates to a safety wheel, for a subway coach bogie, or the like, running on pneumatic tires, adapted to be interposed between a chassis of the bogie and a corresponding tire, said wheel presenting an outer peripheral zone having a braking ... | 01/20/2004 |
| 6511558 | Method for producing vehicle wheels A metal forming method is used for manufacturing vehicle wheels. The invention comprises manufacturing of a wheel block comprising a central part and initially formed rim; drawing of the rim by hot rolling to obtain a wheel profile that approximates a fin... | 01/28/2003 |
| 6436209 | Method of producing a road wheel for a track vehicle A road wheel for a track laying vehicle is made by initially roll pressing and projection drawing a planar disk of temperable steel into a blank having a cylindrical portion, a planar hub portion and an intermediate portion bridging the hub and peripheral... | 08/20/2002 |
| 6073346 | Dual alloy railroad wheel A railroad wheel formed from at least two metallic alloys. In one embodiment, a railroad wheel has a body formed from a first alloy and a rim formed from a second alloy initially in powder form. In an exemplary embodiment, to form the dual alloy wheel the... | 06/13/2000 |
| 6033001 | Wheel for rolling stock and manufacturing method thereof A wheel for rolling stock in which when a deflection amount λ of a disk relative to a rim section is set to not less than 5 mm, a condition that a deflection amount δ of the rim section relative a boss section ࣙ40 mm is secured easily, an excellent du... | 03/07/2000 |
| 6030471 | Method for producing a hardened wheel A specialized induction facility provides localized heating in only the desired wear areas of a crane wheel while leaving the supporting material "as-forged" and ductile. The wear area of a crane wheel is hardened such that flanges extending out from a wo... | 02/29/2000 |
| 5964272 | Wheel cooling tunnel The present invention provides a method of producing cast steel railway wheels. After pouring and removal from the mold, the steel wheel is processed in various steps including processing in an annealing and a tempering furnace. The wheel is then passed t... | 10/12/1999 |
| 5913988 | Out of gauge resistant railroad wheel A railroad wheel revolving around an XX' axle perpendicular to a median plane P, of the type that includes a rim with a rolling surface and a flange, a hub, a plate a connecting area of the plate with the rim, a connecting area of the plate with the hub a... | 06/22/1999 |
| 5910343 | Device at railway wheels and method for obtaining said device The present invention relates to a device for improving the adhesitivity of surface refined parts (6) to the body (7) of railway wheels (1), which surface refined parts (6) have been produced by treating the railway wheel (1) with high energy generated pr... | 06/08/1999 |
| 5899516 | Railway wheel and manufacturing method of the railway wheel A wheel has both wear resistance and heat-crack resistance sufficient for use in a high-speed railway vehicle. The chemical composition of a base steel comprises 0.4 to 0.75 % C, 0.4 to 0.95% Si, 0.6 to 1.2% Mn and less than 0.2% Cr. The wheel has a pearl... | 05/04/1999 |
| 5772801 | Process for the forming of metal alloy wheel rims In a process for the forming of wheel rims in metal alloy, a cast blank undergoes a cold chip removal process by cutting its central area, its inner surface and its lateral surface in order to obtain a semi-finished work which is then heated and plastical... | 06/30/1998 |
| 5667603 | Hardening process and apparatus for holed flat parts A process for hardening a plurality of holed flat parts. The holed flat parts are heated by inserting a cantilever hanger into the holes of the holed flat parts to support them in vertical positions within a furnace. The holed flat parts are then removed ... | 09/16/1997 |
| 5533770 | High-strength solid wheels and tires for railroad traction vehicles and cars A steel for high-strength solid wheels and tires for railroad traction vehicles and cars that is more tenacious at the strengths typical of existing steels, and that is less likely to fracture even at constant braking. The steel has a specific ratio betwe... | 07/09/1996 |
| 5409555 | Method of manufacturing a forged magnesium alloy An article of manufacture made of a magnesium alloy is made by casting the magnesium alloy to provide a casting, forging the casting to render material of the casting to have an average crystalline particle size of not greater than 100 μm, and carrying o... | 04/25/1995 |
| 5352305 | Prestressed brake drum or rotor Uniformly distributed compressive stresses are induced in the machined surfaces of brake drums and brake rotors. The compressive stresses cancel residual tensile stresses induced in the surfaces by machining operations during fabrication. Cancellation of ... | 10/04/1994 |
| 4894099 | Method for influencing the internal stress state of solid railroad wheels The invention relates to the regeneration of solid rail road wheels, the operating safety of which is impaired by the danger of rupture or buckling, by the action of the block brake, especially after the brake has been acting for a long time by influencin... | 01/16/1990 |
