Electrical transmission or interconnection systems – Vehicle mounted systems – Automobile
Patent
1977-03-21
1978-08-15
Hohauser, Herman J.
Electrical transmission or interconnection systems
Vehicle mounted systems
Automobile
340 64, 340545, 180114, B60R 2510
Patent
active
041075439
ABSTRACT:
A passive vehicle antitheft system utilizes a unique combination of condition responsive switching components to control the access to and use of a vehicle. Primary control over the vehicle is provided by a control relay including a first "protection" position in which the vehicle ignition system and starter are disabled and an alarm system is enabled and a second "use" position in which the ignition system and starter are enabled and the alarm system is disabled. The control relay is in turn controlled by three bistable switching components that are selectively enabled and disabled at various stages of use of the vehicle. The switching components, which in the preferred embodiment comprise a triac, a silicon controlled rectifier, and a second relay, automatically switch the control relay to its "protection" position as an authorized user leaves the vehicle and closes the last vehicle door. The switching components are also interconnected and arranged to provide protection against attempts to tamper with or defeat the system.
REFERENCES:
patent: 3997870 (1976-12-01), Horvath
LandOfFree
Vehicle antitheft system does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Vehicle antitheft system, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Vehicle antitheft system will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1438105