초록 ▼

Ignition foiling device which serves to interfere with the efficient operation of a vehicle ignition system after a brief, predetermined period of time has elapsed subsequent to the unauthorized start-up of the vehicle engine. The foiling device thereby serves to thwart the theft, or other confiscat

Ignition foiling device which serves to interfere with the efficient operation of a vehicle ignition system after a brief, predetermined period of time has elapsed subsequent to the unauthorized start-up of the vehicle engine. The foiling device thereby serves to thwart the theft, or other confiscative act directed at a protected vehicle, through first allowing the vehicle engine to start-up in an apparently normal manner and operate for a brief period of time, thereby allowing the illicit operator to drive the vehicle into an attention getting location. The ignition system then becomes irregularly interrupted in such a way that the illusion of misfiring and performance malfunction of the engine is created which serves to discourage the illicit operator from continuing with the attempted theft. The invention couples with the usual components comprising a spark ignition vehicle engine and, through a key or secret switch, it can be defeated by a legitimate operator while an unlawful operator will most likely be unable to overcome the invention\s crippling effect on the vehicle\s operation.

대표청구항 ▼

Ignition foiling means, adapted to a motor vehicle engine means, comprising therefor: a. an ignition coil means having a high tension secondary, and a primary with at least a first terminal coupled in series with an interrupter means and a source of d.c. power that is effectively returned to a secon

Ignition foiling means, adapted to a motor vehicle engine means, comprising therefor: a. an ignition coil means having a high tension secondary, and a primary with at least a first terminal coupled in series with an interrupter means and a source of d.c. power that is effectively returned to a second terminal thereof; b. said interrupter means coupled with said engine means and effective to produce a plurality of ignition control pulse signals synchronized therewith; c. defeating means coupled with said interrupter means to effect controllable inhibition of said pulse signals; d. irregular signal means coupled with said defeating means and effective therewith to control an effectively alternate period of said pulse signal inhibition subsequent to the elapse of at least one effectively inconstant period of pulse signal enablement; and, e. operator over-ride means coupled with said defeating means and effective to selectively enable and disable the controllable inhibition effect of said defeating means. Ignition foiling method adapted for thwarting the unauthorized operation of a motor vehicle through producing the illusion of improper engine operation, having the steps of: a. providing spark ignition pulses for said engine; and, b. producing an irregular signal effective to inhibit said spark ignition pulses for an effectively alternate period subsequent to the elapse of at least one substantially inconstant period of enablement of said spark ignition pulses.