Communications: electrical – Condition responsive indicating system – With particular system function
Patent
1979-09-14
1981-09-08
Waring, Alvin H.
Communications: electrical
Condition responsive indicating system
With particular system function
340500, 340692, 360 12, 369 22, G08B 1900
Patent
active
042887895
ABSTRACT:
An oral warning system for monitoring mining operations, or the like, comprising a plurality of first sensors each providing a signal representative of an abnormal condition being sensed, at least one additional sensor providing a signal representing an emergency condition being sensed, an oscillator and modulator for generating an emergency warning tone energized upon detection of the emergency condition, a plurality of speakers at selected locations for broadcasting the emergency warning tone, a multi-track tape player with playback head selectively movable to any one of the track positions and having an audio output connected to local and remote speakers, and circuit means effective to energize the tape player and move its head to an appropriate track containing a prerecorded oral message upon detection of an abnormal condition by one of said first sensors. Preferably, the system includes means for stopping a mine belt near the locality of the emergency condition and operated by the additional emergency sensor, and a first sensor at the same location detects such belt stoppage so that in addition to the broadcast of the emergency warning tone, the tape player is activated to broadcast a verbal description of the type of emergency and its location.
REFERENCES:
patent: 3798672 (1974-03-01), Gregg, Jr.
Molinick George C.
Shields Roger W.
Molinick George C.
Waring Alvin H.
LandOfFree
Alarm system with verbal message does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Alarm system with verbal message, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Alarm system with verbal message will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1195084