Distress call emitting device

Details Distress call emitting device Distress call emitting device

1998-05-14

2000-07-04

Swann, Glen

Communications: electrical

Condition responsive indicating system

Specific condition

340540, 340689, 340692, 3406935, G08B 2110

Patent

active

060845252

ABSTRACT:
The distress call emitting device comprises an earthquake sensor for detecting an earthquake of a prescribed intensity or greater and/or a receiver for receiving a radio signal from a remote transmitter. Therefore, even when the user is unable to call for a help, the distress call emitting device of the present invention produces a distress call in his behalf by sound and/or light. The distress call can be initiated either by detecting the intensity of the earthquake or by operating a remote transmitter which may be carried by the user. If the device is linked to a telephone line, the distress call can be made also through a telephone line. Thus, even when the user is too weak to call for a help by his own effort, the device is either automatically activated by an earthquake or remotely activated by pressing a switch on a portable transmitter.

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patent: 5565844 (1996-10-01), Bedrosian
patent: 5610338 (1997-03-01), Kato et al.
patent: 5644300 (1997-07-01), Lin
patent: 5729203 (1998-03-01), Oka et al.

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