Communications: electrical – Land vehicle alarms or indicators – Of burglary or unauthorized use
Patent
1996-06-06
1998-01-06
Hofsass, Jeffery
Communications: electrical
Land vehicle alarms or indicators
Of burglary or unauthorized use
340430, 340568, 340687, 307 102, 455345, B60R 2510
Patent
active
057059764
ABSTRACT:
A car stereo has a removable panel attached to a body of the car stereo, the panel having a plurality of operation buttons for operating the car stereo. An alarm device is provided in a motor vehicle. A first detector is provided for detecting removing of the panel from the body, and a second detector is provided for detecting turning on of an ignition switch of the motor vehicle. A third detector is provided for detecting opening of a door of the motor vehicle. At lapse of a predetermined first period of time after the detection of the door open, the alarm device is operated unless detection of attaching of the panel and turning on of the ignition switch.
REFERENCES:
patent: 4481512 (1984-11-01), Tscheulin et al.
patent: 4758817 (1988-07-01), Akiyama
patent: 4838377 (1989-06-01), Kozaki et al.
patent: 5506563 (1996-04-01), Jonic
patent: 5554966 (1996-09-01), Iijima et al.
Hofsass Jeffery
Pioneer Electronic Corporation
Wu Daniel J.
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