Non-hazardous third rail energizing warning device

Details Non-hazardous third rail energizing warning device Non-hazardous third rail energizing warning device

1994-06-13

1996-06-11

Le, Mark T.

Railway switches and signals

Miscellaneous

Signals and indicators

246217, 246473R, 340660, G08B 2100

Patent

active

055248527

ABSTRACT:
A third rail warning device in which the third rail carries in use a dangerously high voltage. Connected to the third rail is a source of relatively safe voltage as a warning that the dangerously high voltage is about to be applied to the third rail. A time delay is employed to terminate the safe voltage and permit automatic connection of the dangerously high voltage, and an alarm is actuated when the safe voltage is being applied to the third rail.

REFERENCES:
patent: 3727559 (1973-04-01), McCune et al.
patent: 4736197 (1988-04-01), Buyat et al.
patent: 4931768 (1990-06-01), Jincks et al.

Affiliated with

Also associated with

Rating

Non-hazardous third rail energizing warning device does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Non-hazardous third rail energizing warning device, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Non-hazardous third rail energizing warning device will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-348498