Railway switches and signals – Cab signal or train control – Train mechanism
Patent
1991-11-27
1993-08-10
Huppert, Michael S.
Railway switches and signals
Cab signal or train control
Train mechanism
246 34R, 246197, B61L 324
Patent
active
052341844
ABSTRACT:
A sensing device mounted on a railway locomotive vehicle axle assembly to sense signalling currents conducted through the axle. The device also serves to protect the critical traction motor support bearing from contamination by foreign substances. The sensing device includes a core member mounted in material at least partially covering the bearing and maintaining the core member in position encircling the axle. The core member conducts magnetic flux caused by the flow of current through the axle. An electrical conductor wound about the core member and/or a hall effect sensor embedded within the core member detect the presence of the flux. Clamping bands maintain the mounting material in position about the axle.
REFERENCES:
patent: 966796 (1910-08-01), Chandeysson
patent: 1302345 (1919-04-01), Finnigan
patent: 1399796 (1921-12-01), Ross
patent: 1413667 (1922-04-01), Lehmann
patent: 1627409 (1927-05-01), Rose
patent: 2576424 (1951-11-01), Sunstein
patent: 4451018 (1984-05-01), Smith et al.
patent: 4655421 (1987-04-01), Jaeger
patent: 4720067 (1988-01-01), Jaeger
Jan. 1978 General Mators Electromotive Division, Maintenance Instruction, p. 21.
Huppert Michael S.
Lowe Scott L.
Union Switch & Signal Inc.
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