Unitary one quarter mile long railroad rail free of weld seams

Details Unitary one quarter mile long railroad rail free of weld seams Unitary one quarter mile long railroad rail free of weld seams

1989-12-01

1991-05-28

Spar, Robert J.

Railways: surface track

Rails

295277, 2989735, 164476, 104 2, E01B 502

Patent

active

050186663

ABSTRACT:
A unitary one-quarter mile long railroad rail which is free of weld seams. The rail is produced via a process including continuous rolling and asymmetric cooling.

REFERENCES:
patent: 1213745 (1917-01-01), Cash et al.
patent: 3544737 (1970-12-01), Nowalk
patent: 3680623 (1972-08-01), Tarmann et al.
patent: 4846254 (1989-07-01), Kimura

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