Adjustable rail fastener assembly
US4632308A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Oct 25, 1985 |
| Grant date | Dec 30, 1986 |
| Priority date | — |
| Expiry date | Oct 25, 2005 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE01B9/685
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
A rail fastener assembly includes a rail seat laterally shiftable incrementally to properly position a supported rail. Anchoring of the seat to an underlying foundation is achieved by a clamp ring surrounding the periphery of the seat and including a plurality of fastener-receiving openings having their centers variably spaced from the seat. Rotation of the clamp ring presents at least two fastener-receiving openings in overlying registry with hold-down elements in the foundation to enable the application of fasteners through the clamp ring to secure the seat to the foundation. A pair of symmetrical spring clips engage shoulders on the seat and include a medial hold-down portion biased against the rail flanges and fixed, distal shoulder engaging portions overlying each rail flange but normally spaced thereabove to limit deflection of the clips during vertical movement of the rail.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.