Patent · US Expired

High-strength solid wheels and tires for railroad traction vehicles and cars

US5533770A · kind A · utility

6Cited by

7References

3Claims

0Family size

Assignee

Man Gutehoffnungshutte Aktiengesellschaft · DE

Inventors

Horst Clausmeyer · Dinslaken, DE
Dieter Hoffmann · Marburg, DE
Wolfgang Weber · Hemau, DE

Key dates

Filing date	Jun 30, 1994
Grant date	Jul 9, 1996
Priority date	—
Expiry date	Jun 30, 2014

Classification

Technology area (CPC C)Chemistry; Metallurgy
CPC primaryC21D1/18
WIPO fieldMaterials, metallurgy
WIPO sectorChemistry

Abstract

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 between major, alloying and companion elements, so that the steel is of high purity and uniformity. The heat treatment ensures a structure of excellent tenacity at high strength and of special endurance.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.