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| Number | Title | Issue Date |
| 7269904 | Portable handheld work apparatus A portable handheld work apparatus such as a motor-driven chain saw (1) includes a housing (2) wherein an internal combustion engine (10) and a carburetor (11) are mounted. A throttle lever (6) is provided which is pivotally journa... | 09/18/2007 |
| 7013868 | Accelerator signal offset system A disclosed accelerator pedal offset system includes a first connector that can be coupled to an accelerator pedal of a motor vehicle and a second connector that can be coupled, in place of the accelerator pedal, to an engine control module of the vehicle. The secon... | 03/21/2006 |
| 6035838 | Controlled energy ignition system for an internal combustion engine A controlled energy ignition system for an internal combustion engine includes an ignition coil having a primary coil and a secondary coil coupled to first and second electrodes of an ignition plug defining a spark gap therebetween, wherein the primary co... | 03/14/2000 |
| 4186713 | Ignition systems for internal combustion engine An internal combustion ignition system includes a switching transistor, an ignition transformer, a ballast resistor and a current sensing resistor. The primary winding of the transformer, and these two resistors are in series with the collector emitter pa... | 02/05/1980 |
| 4181113 | Engine ignition system with voltage monitoring A voltage divider across the interruptor switch contacts provides a measure of the high voltage produced before a spark occurs at the sparkplug. A Zener diode connected to the upper tap of the voltage divider breaks down when this voltage has risen a cert... | 01/01/1980 |
| 4114582 | Voltage limited ignition system, particularly for an internal combustion engine To prevent application of excessive spark energy in an ignition system designed for proper firing voltages even under low-battery voltage conditions, upon rise of the battery voltage to normal or excessive values, a voltage sensing circuit, including a th... | 09/19/1978 |
| 4099508 | Ignition system An ignition system for an internal combustion engine comprising a battery, an ignition coil having a primary and secondary winding, a variable impedance element whose impedance is temperature dependent coupled between the primary of the ignition coil and ... | 07/11/1978 |
| 4036199 | Device for protecting an ignition device for motor vehicles A device for protecting an ignition device, particularly for motor vehicles, equipped with an internal combustion engine, in which a zener diode controls, by means of at least two transistors the placing in short-circuit of a resistor connected in series ... | 07/19/1977 |
| 4020816 | Electronic ignition device for an internal combustion engine An electronic ignition control device for an internal combustion engine includes a power amplifier which controls current through an ignition coil and a triggering circuit for the power amplifier. To protect the power amplifier against damage resulting fr... | 05/03/1977 |
| 3941112 | Ignition device for internal combustion engines An ignition device for an internal combustion engine of the kind having an ignition coil comprising a primary winding and a secondary winding, a current limiting resistance connected in series with the primary winding and a contact breaker, wherein there ... | 03/02/1976 |
