Motor vehicles – With means for promoting safety of vehicle – its occupant or... – By preventing unauthorized or unintended access or use
Patent
1995-10-20
1998-01-27
Ellis, Christopher P.
Motor vehicles
With means for promoting safety of vehicle, its occupant or...
By preventing unauthorized or unintended access or use
307 102, 340426, B60R 2500
Patent
active
057113920
ABSTRACT:
The invention provides a device for protection against unauthorized use of a motor vehicle, in which usage authorization information is transmitted electromagnetically, at preset time intervals, by a transmitter in a predetermined vehicle usage area. A usage control device aboard a vehicle keeps an operational critical vehicle assembly or assemblies that are operationally essential in operational readiness after a usage signal is received for only a predetermined subsequent period of time, and blocks further operation if further usage signals are not received within the predetermined time period.
REFERENCES:
patent: 3703714 (1972-11-01), Andrews
patent: 4159467 (1979-06-01), Ballin
patent: 5370201 (1994-12-01), Inubushi
patent: 5449957 (1995-09-01), Carlo
patent: 5563453 (1996-10-01), Nyfelt
patent: 5604384 (1997-02-01), Carlo et al.
"Satellitenhilfe gengen Auto-Lau (Satellite Protection Against Auto Theft)", R. Gramm, Funkschau, Feb. 1993, pp. 42-45.
Ellis Christopher P.
Mercedes-Benz AG
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