Rail anchoring spike
US6808120B2 · kind B2 · utility
7Cited by
30References
38Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Oct 28, 2002 |
| Grant date | Oct 26, 2004 |
| Priority date | — |
| Expiry date | Nov 6, 2022 |
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 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.