Device suitable for use in a railway rail-and-fastening assembly to insulate a rail from a rail clip and from an anchorage for the clip
US4104483A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Nov 26, 1976 |
| Grant date | Aug 1, 1978 |
| Priority date | — |
| Expiry date | Nov 26, 1996 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE01B9/30
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
A device suitable for use in a railway rail-and-fastening assembly to insulate a rail from a rail clip and from an anchorage for the clip includes an elongate plate-like portion, a portion depending from one side of it and two lugs projecting from the depending portion away from the plate-like portion near opposite ends thereof. In contrast to prior proposals, the device is asymetrical, a flat surface on the top of the plate-like portion having its center nearer one end of that portion than the other end. A ramp surface leads up to the flat surface from said other end. The device is preferably made wholly of glass fibre-reinforced nylon and the thickness of the plate-like portion is preferably at least 5 millimeters.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.