Railway switches and signals – Train-position indication – Train annunciators or indicators
Patent
1997-03-26
1998-03-17
Le, Mark T.
Railway switches and signals
Train-position indication
Train annunciators or indicators
246167A, B61L 100
Patent
active
057277583
ABSTRACT:
A system and method for warning personnel in proximity to railroad tracks of an approaching train is disclosed. A transmitter disposed on a train transmits a warning signal. The personnel are each provided with a portable Radio Frequency (RF) receiver (pager) for receiving the warning signal transmitted by the transmitter. Upon receiving the warning signal, the portable RF receivers generate alarms to notify the personnel of the impending arrival of the train.
REFERENCES:
patent: 2762913 (1956-09-01), Jepson
patent: 5554982 (1996-09-01), Shirkey et al.
patent: 5620155 (1997-04-01), Michalek
Penza George Gregory
Penza George Robert
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