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US 6,604,690 B2Granted
Concrete rail tie
AssigneesEngineering Invention Pty Limited, AirBoss Railway Products Inc.
InventorHartley Frank Young
Life of this patent
Estimating the term…
Abstract
A concrete railroad tie is provided which utilises a tie 1 having a peripheral rib 5, 1 mm high, around the rail seat to contain adhesive 12 to bond a thick wear plate 8 to the tie. The surface of the tie is well below the top of the plate to reduce the penetration of abrasive materials between the rail pad 13 and the plate 8. This combination inhibits abrasion of the tie for the life of the tie.
Claims14
A railroad tie and rail seat assembly for supporting a rail and comprising:
- a) a concrete rail tie having at least one rail seat;
- b) a wear plate extending over said rail seat;
- c) peripheral ribs between the rail seat and the wear plate defining an adhesive cavity that is co-extensive with said wear plate so that peripheral edges of the wear plate extend to the ribs defining said adhesive cavity;
- and
- d) polymeric adhesive within said cavity to bond said wear plate to said rail tie.
2 more elements
Dependencies are inferred from the claim text.