Selected heat treatment and hardening method for nails
US6273974A · kind A · utility
12Cited by
49References
20Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | May 15, 2000 |
| Grant date | Aug 14, 2001 |
| Priority date | — |
| Expiry date | May 15, 2020 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S411/90
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
A selectively hardened nail includes a nail head, an elongated shank, and a tip. A portion of the nail shank is made harder than the remainder by selectively heat treating that portion, and cooling it. The nail has controlled bending properties. The selectively hardened portion does not significantly bend when the nail is fired at a surface using a power driving tool, or during use of the nailed object.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.