Stacked railway tie

Details Stacked railway tie Stacked railway tie

2006-10-24

2010-06-08

Morano, S. Joseph (Department: 3617)

Railways: surface track

Ties

C238S036000

Reexamination Certificate

active

07731099

ABSTRACT:
A railway tie is disclosed having stackable decks for reducing ballast migration in areas where the crib is reduced or removed in order to accommodate additional railway equipment. The stackable railway tie can include a base deck, a top deck, and a fastening system for securing the top deck to the base deck. A second fastening system may be integrated in the railway tie for securing one or more rails to the top deck. The top deck can be configured to transmit a load, such as that from the weight of a train, to the base deck. A ballast displacement system can be provided to distribute a load on the base deck to ballast under the railway tie. One or more top decks may be used in connection with electrically insulating the rails. Nonconductive deck spacers and side posts may insulate the top deck from the bottom deck. Side posts may electrically insulate the base deck from the fastener system.

REFERENCES:
patent: 4355754 (1982-10-01), Lund et al.
patent: 4417690 (1983-11-01), Langman
patent: 5836512 (1998-11-01), Briggs
patent: 5918806 (1999-07-01), Keightley et al.
patent: 6230981 (2001-05-01), Hill et al.
patent: 6257494 (2001-07-01), Tokuoka et al.
patent: 6502760 (2003-01-01), Keedwell
patent: 6604689 (2003-08-01), Briggs
patent: 2005/0156055 (2005-07-01), Kenney et al.

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