Safety system for railroad personnel

Details Safety system for railroad personnel Safety system for railroad personnel

2008-05-01

2009-12-01

Le, Mark T (Department: 3617)

Railway switches and signals

Train-position indication

Train annunciators or indicators

C246S477000, C246S488000, C246S16700M

Reexamination Certificate

active

07624952

ABSTRACT:
A system for use by a railroad to warn railroad workers, track walker, railroad personnel and others of oncoming train(s) and to warn the train operator(s) of such train(s) of the presence of railroad workers, track walker railroad personnel, other train(s) and others on or near the railroad tracks, such system including at least one train transceiver for each train for sensing signals transmitted by at least one of a plurality of personal transmitter/receivers, one personal transmitter/receiver being worn by each of such railroad workers, track walker and railroad personnel, such train transceiver(s) to warn the train operator(s) of the presence of railroad workers, track walker, other train(s), and railroad personnel on or near the tracks when receiving signals from the personal transmitter/receivers, such personal transmitter/receivers receiving signals from the train transceiver(s) to warn the railroad workers, track walker and railroad personnel of oncoming train(s) with such warning signal activating nearby lights and horns, such system working in conjunction with VOBC and a compact, lightweight portable train detectors.

REFERENCES:
patent: 5727758 (1998-03-01), Penza et al.
patent: 6113037 (2000-09-01), Pace
patent: 6145792 (2000-11-01), Penza et al.
patent: 2007-176470 (2007-07-01), None
Copending U.S. Appl. No. 11/820,317, filed Jun. 19, 2007.

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