1974-11-04
1976-11-02
Stewart, David L.
179 5R, H04M 1104
Patent
active
039899004
ABSTRACT:
An alarm system for automatically sending a telephone message or other remote signal in case help is needed for a person residing alone. In one version, a timer cyclically activates a magnetic tape player which begins slowly to dial the number of the station at which help is available, and then transmit a prerecorded message. The timer simultaneously activates an audible warning signal so that the resident can abort sending of the message if no help is needed. The timer is automatically reset each time the resident lifts the handset in normal telephone usage so that it is unnecessary under ordinary circumstances for him to worry about resetting the timer each day. Should the audible signal be activated but there is no need for help, the signal may be shut off, the message sending aborted and the timer reset merely by lifting the handset. A manual emergency bypass switch is provided. A second embodiment substitutes a high speed digital dialer and transmitter for the tape player, the dialer being activated after a short delay during which the audible signal is sounding. Additional modifications show the automatic telephone alarm system adapted to multiple dwelling use or to existing emergency alarm systems.
REFERENCES:
patent: 2609045 (1952-09-01), Kaiser
patent: 3294910 (1966-12-01), Jackson
patent: 3512355 (1970-05-01), Lang
patent: 3662111 (1972-05-01), Rubinstein
Lifeline Systems Inc.
Stewart David L.
LandOfFree
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