Pad for railway rail fastenings
US4239156A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Dec 12, 1978 |
| Grant date | Dec 16, 1980 |
| Priority date | — |
| Expiry date | Dec 12, 1998 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S16/13
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
An insulation pad for rails on sleepers, the pad comprising a base section adapted, in use, to be interposed between a rail and an underlying sleeper, and two upper sections adapted, in use, to extend over the respective upper surfaces of the rail foot, the upper sections being formed integrally with the base section, wherein the upper sections are hingedly connected to the respective side edges of the base section, which hinges are formed by sections of pad material of reduced thickness, and wherein the upper sections and the associated side edges of the base section adjacent the respective hinges incorporate interlocking knuckle and groove arrangements for resisting differential movement between the upper sections and the base section longitudinally of the hinges.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.