Did You Know...
...that when IBM conducted a market study of Chester Carlson's invention in 1959, the company concluded that it would take only 5000 units of his new product to saturate the market? IBM therefore declined to be part of the new product introduction. Too bad for IBM. Carlson's invention was the xerography process, and his new product was the beginning of the Xerox Corporation. It is estimated that every day, worldwide, 3,000,000,000 copies are made!!
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| Number | Title | Issue Date |
| 5148084 | Apparatus and method for providing ignition to a turbine engine A unipolar ignition of the invention provides a current waveform at the ignitor plug which initially rises relatively slowly, followed by a transition to a fast rising current which quickly peaks and thereafter slowly dissipates. Such a current waveform p... | 09/15/1992 |
| 4561411 | Ignition system for internal combustion engine A breakerless ignition system includes a resonant circuit whose oscillation is controlled by the relative position between a detector coil 2a embodied therein and a magnetically permeable rotor 1 driven by the engine, and a threshold detector 3 responsive... | 12/31/1985 |
| 4516557 | Ignition apparatus for internal combustion engine An ignition apparatus for an internal combustion engine which includes a signal rotor on a rotary shaft for being rotated in synchronism with a coil wound about a core, a metal heat sink, and a frame connected to the heat sink so as to form a casing. The ... | 05/14/1985 |
| 4494519 | Ignition system for internal combustion engine A breakerless ignition system includes a resonant circuit whose oscillation is controlled by the relative position between a detector coil 2a embodied therein and a magnetically permeable rotor 1 driven by the engine, and a threshold detector 3 responsive... | 01/22/1985 |
| 4429235 | Input stage for an ignition control circuit An input stage for an ignition control circuit is provided for producing an output signal from a comparator which switches the primary current circuit of the ignition coil in dependence on a control signal in which the control signal causes alternate swit... | 01/31/1984 |
| 4185602 | Pulse generator for energy discharge system This disclosure relates to a pulse generator for triggering successive energy discharges such as in automotive or other ignition systems and the like, which generator comprises a magnetic circuit a portion of which is interrupted by a conductive vane the ... | 01/29/1980 |
| 4164706 | Rotational position detector utilizing an FET blocking oscillator A rotation detecting apparatus detects the angular position of an engine by rotating from the engine an electrically conductive rotating member having a plurality of equally spaced projections and notches formed on the periphery thereof and arranging a de... | 08/14/1979 |
| 4109632 | GTO Ignition circuit A constant duration and level of spark is obtained over a wide range of engine speeds in an ignition circuit, including a gate-turn-off device having a main current path connected in series with the primary winding of an ignition coil. An operating voltag... | 08/29/1978 |
| 4109630 | Breakerless electronic ignition system An electronic ignition system for an internal combustion engine having a timing signal source comprising an oscillator for providing a carrier signal; an electronic network connected to the oscillator and including a sensor means for providing a reactance... | 08/29/1978 |
| 4016849 | Apparatus for increasing the ignition voltage of internal combustion engines The present circuit arrangement for generating a high voltage for the spark plugs of an internal combustion engine, includes an ignition coil having a secondary winding coupled to the spark plugs. One end of the primary winding of the coil is connected to... | 04/12/1977 |
| 4014308 | Ignition system and apparatus and method for generating timing signals therefor A capacitive discharge type ignition system is arranged for selective operation by timing signals generated by either breaker points or a breakerless timing signal generator. The generator utilizes the signal generated by an inductive pickup to modulate a... | 03/29/1977 |
