Railway switches and signals – Train-position indication – Miniature model
Patent
1989-11-30
1990-07-31
Butler, Douglas C.
Railway switches and signals
Train-position indication
Miniature model
246 6, 246191, 246473R, B61L 318, B61L 1500
Patent
active
049444743
ABSTRACT:
A system and method for indicating the speed of a locomotive during low speed continuous loading and or unloading of bulk materials such as coal. The system utilizes treadle switches which are equally spaced along a track, the treadle switches generating positional information which is transmitted to a receiver in the locomotive thereby enabling a very accurate indication of the speed of the vehicle to be displayed to the driver.
REFERENCES:
patent: 2535162 (1950-12-01), Rodgers
patent: 3268727 (1966-08-01), Shepard
patent: 3309516 (1967-03-01), Baughman
patent: 3888437 (1975-06-01), Birkin
patent: 4151969 (1979-05-01), Wood
patent: 4184655 (1980-01-01), Anderberg
patent: 4351504 (1982-09-01), Frielinghaus
patent: 4468814 (1984-08-01), Field
patent: 4469298 (1984-09-01), Vebel
patent: 4735383 (1988-04-01), Corrie
patent: 4787581 (1988-11-01), Dobler et al.
Butler Douglas C.
Kooragang Coal Management Pty. Ltd.
Le Mark T.
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