Railroad track insulator and part therefor
US4569477A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Sep 9, 1983 |
| Grant date | Feb 11, 1986 |
| Priority date | — |
| Expiry date | Sep 9, 2003 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE01B9/303
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
A railroad track insulator, part therefor and methods of making the same are provided, the railroad track insulator being adapted to hold a railroad rail against its foundation and comprising the combination of a metallic part and a polymeric part secured together so that the polymeric part is adapted to engage the rail. The metallic part has an open ended recess in one of the opposed sides thereof and is defined by a peripheral flange arrangement thereof. The polymeric part has a peripheral edge and is disposed and secured in the recess so as to have the peripheral edge thereof supported by the peripheral flange arrangement of the metallic part. The metallic part comprises a stamping that has a generally L-shaped cross-sectional configuration that defines two legs thereof being disposed at an angle relative to each other, each leg having opposed ends and an outer free end extending between the opposed ends thereof. Each end of each leg has a part of the peripheral flange arrangement bent therefrom and being spaced from adjacent parts of the peripheral flange arrangement.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.