Method and apparatus of communicating emergency signals from a t

Details Method and apparatus of communicating emergency signals from a t Method and apparatus of communicating emergency signals from a t

1978-06-02

1980-08-05

Safourek, Benedict V.

Telecommunications

Transmitter and receiver at same station

With tuning

455 79, 455 1, 455 99, 340 52H, 340 32, H04B 140

Patent

active

042165458

ABSTRACT:
To alert users of Citizen-Band (CB) radios of an emergency situation, a CB transceiver has a tone generator associated therewith generating an emergency signal, for example a high pitched tone. Upon operation of an emergency switch, the transceiver is placed in the "transmit" mode, and the channels thereof are selectively stepped through for transmission, each one of the channels being modulated by the emergency high pitched tone signal generated in the emergency tone generator; the transceiver, finally, reaches a predetermined channel, for example channel 9, reserved for emergency communication and is thereupon switched to receiving mode. The emergency switch can be incorporated as part of an impact switch in a motor vehicle, thereby sending out the emergency signal, automatically, upon collision, and alerting other users of CB equipment that an emergency exists, regardless of the channels on which the other users may be operating.

REFERENCES:
patent: 3441858 (1969-04-01), Graham
patent: 3461423 (1969-08-01), Trumble
patent: 3584303 (1971-06-01), Guanella
patent: 3660811 (1972-05-01), Vail et al.
patent: 3710313 (1973-01-01), Kimball et al.
patent: 3990040 (1976-11-01), Gleitz et al.
patent: 4048561 (1977-09-01), Wilcox et al.
Plain English Rules-Citizens Band Radio Service.

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