Railway spike and an assembly on a railway track incorporating the spike
US4461422A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Mar 9, 1982 |
| Grant date | Jul 24, 1984 |
| Priority date | — |
| Expiry date | Mar 9, 2002 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE01B9/06
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
A railway spike consists of a bar folded to form first and second legs. Proceeding upwardly from the nose, formed by the two ends of the bar, firstly there is a first portion in which the legs are straight and parallel, then a second portion in which they diverge, then a third portion in which they converge, then a fourth portion in which they diverge again and finally a fifth portion which includes the uppermost part of the spike. When the first leg is on the left, no part of the fourth or fifth portion of the spike is further to the left than is the leftmost part of the first leg in the second and third portions. The spike may pass through a hole in a baseplate on which a rail stands, a resilient clip having a portion which bears downwardly on a flange at the bottom of the rail and having a further portion which presses upwardly on a flat surface at the bottom of the plate.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.