Case hardened steel blades for sports equipment and method of manufacture
US6458220B1 · kind B1 · utility
10Cited by
0References
12Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Sep 19, 2000 |
| Grant date | Oct 1, 2002 |
| Priority date | — |
| Expiry date | Oct 21, 2020 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16H55/06
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
Steel alloys susceptible to case and core hardening comprise 0.05 to 0.24 weight percent carbon; 15 to 28 weight percent cobalt and 1.5 to 9.5 weight percent in nickel, small percentages of one or more additives: chromium, molybdenum, and vanadium; and the balance iron. Blades for ice skating or other sports equipment made from such alloys provide predictable and reproducible characteristics and permit fabrication with hardened edges on a ductile, strong substrate or base.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.