Rail anchoring spike
US6471140B2 · kind B2 · utility
7Cited by
4References
32Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Aug 10, 2001 |
| Grant date | Oct 29, 2002 |
| Priority date | — |
| Expiry date | Aug 10, 2021 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE01B9/483
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
An improved fastener for attaching metal to wood is provided. The fastener is particularly suited for use as a railroad spike for attaching a metal rail to a wooden tie. The improved spike is adapted for installation by either driving or screwing the spike into the tie. A plurality of flutes are adapted to engage with the tie, thereby preventing loosening of the spike. The spike may be used with or without a metal boss or fishplate to secure a metal rail to a wooden tie.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.