Method of making a railroad track insulator unit
US4679293A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Dec 5, 1985 |
| Grant date | Jul 14, 1987 |
| Priority date | — |
| Expiry date | Dec 5, 2005 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T29/49906
- 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.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.