Switch clearing system

Details Switch clearing system Switch clearing system

1998-04-17

2000-05-23

Le, Mark T.

Railway switches and signals

Switches

Snow protected

246444, 104279, E01B 700

Patent

active

060657219

ABSTRACT:
An sir blowing system for use in deeping railroad track switches clear of snow utilizes flexible tubes, preferebly of rubber or plastic, located transversely beneath the main tracks, and connecting with resilient nozzles to direct a high flow of air in the direction of the track switch points. The system may include resilient ducts conveying air in protective relation with the switch control rods, extending laterally beneath the track. The rod protective air discharge may be by way of a louvered cross-tube, extending parallel with the rods, to discharge air laterally of the rods, or one or more nozzles discharging air longitudinally of hte rods.

REFERENCES:
patent: 1273291 (1918-07-01), Vaughan
patent: 1778637 (1930-10-01), Hollinger
patent: 3484601 (1969-12-01), Burwell
patent: 3612409 (1971-10-01), Henning
patent: 3972497 (1976-08-01), Ringer
patent: 4360949 (1982-11-01), Wilson
patent: 4674718 (1987-06-01), Bjorklund
patent: 4695017 (1987-09-01), Ringer et al.
patent: 5702074 (1997-12-01), Smith et al.

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