High hardness boron steel rotary blade
US5916114A · kind A · utility
4Cited by
13References
11Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Sep 21, 1995 |
| Grant date | Jun 29, 1999 |
| Priority date | — |
| Expiry date | Sep 21, 2015 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T29/49995
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
A rotary blade for a mower or cutter is formed from boron steel, such as 10B38 steel, and is heat treated to yield high hardnesses of 48 Rockwell C or above. The blade has increased hardness because of the heat treating, but due to the alloy composition, is still sufficiently tough to perform satisfactorily as a cutting blade, in particular to pass conventional impact tests. Furthermore, the low carbon content of the blade makes cold working of the part practical.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.