Rail anchoring spike
US12006638B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 18, 2020 |
| Grant date | Jun 11, 2024 |
| Priority date | — |
| Expiry date | Jan 17, 2043 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE01B13/02
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
An improved rail anchoring spike that includes barbs is used for fastening metal to ties. The spike includes a head having one or more flanges and a stand-off extending axially from the flange(s). The spike includes a shank extending axially from the stand-off to form a tapered tip. The shank is adapted to engage dense material of the tie by a combination of threads and barbs on the shank. The threads are generally parallel and extend over a threaded portion of the shank. The shank includes a plurality of barbs positioned in a lower half of the threaded portion. Each barb is positioned between a pair of threads. Each barb is configured to minimize damage to fibers of the tie during installation of the spike as the fibers relax behind, and engage with, a barbed end. This prevents movement of the spike over time despite deterioration of the tie.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.