Communications: electrical – Land vehicle alarms or indicators – Internal alarm or indicator responsive to a condition of the...
Patent
1991-07-16
1992-05-12
Ng, Jin F.
Communications: electrical
Land vehicle alarms or indicators
Internal alarm or indicator responsive to a condition of the...
340568, 307 101, 70237, B60Q 100
Patent
active
051131749
ABSTRACT:
This invention relates to a device for giving an alarm for failure to draw out an engine key for a vehicle. A key cylinder lock comprises an outer tubular member, and an inner tubular member rotatably provided within the outer tubular member. A magnet key having a magnet is inserted into the inner tubular member. A switch member which is turned ON when the magnet key is inserted into the inner tubular member by a power delivered from a power supply provided in the vehicle is provided in the outer tubular member. On the other hand, a door switch which is turned ON when the door of the vehicle is opened is provided. An alarm unit is connected to both the door switch and the switch member. Thus, when the door of the vehicle is opened with the magnet key being inserted into the key cylinder lock as it is, the alarm unit produces an alarm, thus to inform a driver that he forgets to draw out the key.
REFERENCES:
patent: 3649960 (1972-03-01), Severn
patent: 3944762 (1976-03-01), Coleman
patent: 4223296 (1980-09-01), Kim et al.
patent: 4331013 (1982-05-01), Jaulmes
Greigg Edwin E.
Greigg Ronald E.
Hofsass Jeffery A.
Ng Jin F.
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