Patent
Anti-hijacking and theft prevention device for motor vehicles
Harold A. Firari,John A. Werner +1 more
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TLDR
An anti-hijacking and theft prevention device for motor vehicles having a fuel restricting solenoid valve assembly including an interchangeable fuel restricting valve and a circuit for operating the system is described in this article.Abstract:
An anti-hijacking and theft prevention device for motor vehicles having a fuel restricting solenoid valve assembly including an interchangeable solenoid operated fuel restricting valve and a circuit for operating the system. The solenoid operated fuel restricting valve is installed in the vehicle's fuel line. When the ignition key is inserted into the ignition switch of a vehicle and turned to the "on" position and the engine is started, a timer will start to count down from a predetermined period of time. If the system is not disabled by activating a hidden switch during the count down period, the solenoid operated fuel restricting valve moves from an open position to a closed position. The solenoid valve has a small valve orifice which allows only a small restricted amount of fuel to flow through the valve assembly in the fuel line. While the amount of fuel is sufficient to keep the engine from stalling, the vehicle will be capable of a speed of no more than 5 to 10 miles per hour.read more
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References
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Patent
Motor vehicle theft-prevention apparatus
TL;DR: In this paper, the fuel valve is actuated by an electric circuit having a hidden switch accessible to the driver, and the hidden switch may be a simple two-position toggle switch, a receiver and transmitter system, or a three-terminal switch having an off-hold position with a warning buzzer.
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Anti-theft device for internal combustion engines
TL;DR: A keyboard with a plurality of push buttons thereon is mounted in the driver''s compartment and is connected by push rods to a new and improved valve mechanism in the fuel line adjacent the carburetor as discussed by the authors.
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Anti-theft device for vehicles
TL;DR: A vehicle anti-theft device which when activated by the vehicle user can cause the fuel tank to be isolated from the internal combustion engine of the vehicle and simultaneously therewith causes the fuel gauge to register empty as mentioned in this paper.