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3M employee and church chorister Art Fry needed something to temporarily mark pages in his hymnal. He was in luck because his colleague, Spencer Silver, accidentally developed a glue that was too weak for other purposes. After initially discouraging consumer response, Post-it Notes became a hit in 1979.
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| Number | Title | Issue Date |
| 8061333 | Circuit arrangement and method for operating an inductive load A circuit and a method for operating an inductive load, for example a fuel injector, in which rapid response of the load can be realized and, at the same time, small electrical power loss. A functional isolation of the rapid current buildup at the beginning of an en... | 11/22/2011 |
| 7938102 | Method and system for conserving fuel in a diesel engine A diesel engine coupled to a transmission and having a fuel injector control system which among other things monitors the load on the engine by measuring the transmission line pressure, a higher pressure being indicative of a greater load. When the pressure is below... | 05/10/2011 |
| 7527039 | Fuel injection control apparatus of internal combustion engine A fuel injection control apparatus of an internal combustion engine is disclosed. This apparatus is provided with a crank angle detector that includes a signal rotor having a number of tooth portions and a toothless portion. The crank angle detector outputs a first ... | 05/05/2009 |
| 7383819 | Electromagnetic valve device and fuel injection apparatus with the valve device A compact electromagnetic valve device for fuel injection apparatus for engines is provided with which occurrence of cavitation erosion due to rapid change in pressure in a small gap is prevented without increasing in size. Through holes are drilled in a platy armat... | 06/10/2008 |
| 7363143 | Control apparatus for internal combustion engine A control apparatus for an internal combustion engine, comprising crank angle calculation means for calculating a crank angle between edges which are detected by a first crank angle sensor and a second crank angle sensor, on the basis of a crank cycle between the ed... | 04/22/2008 |
| 7350405 | Disturbance-resistant bumpless crankshaft position sensing Disclosed herein are methods of generating a virtual crankshaft positioning stream of signal pulses that is derived from one or more series of actual crank signals. The virtual stream is useful for monitoring crankshaft positioning and is able to persist despite ele... | 04/01/2008 |
| 7349789 | Method for controlling supply of fuel to a combustion engine A method for controlling supply of fuel to a combustion engine, e.g. a self-igniting internal combustion engine in a vehicle, having a first group of cylinders and a second group of cylinders, the method comprising the steps of: determining if a demanded total fuel ... | 03/25/2008 |
| 7311084 | Fuel injection system This invention provides a simple means to initiate the movement of a vehicle by utilizing a fuel injector system, which determines a length of a magnet on the flywheel or crankshaft pulley. This system enables a person to choose a speed where fuel from a fuel inject... | 12/25/2007 |
| 7216030 | Method and device for determining the angular position of a crankshaft in an internal combustion engine A method and a device for determining the angular position of a crankshaft of an internal combustion engine, especially when shutting down the internal combustion engine, using an angle sensor, the passing by being recorded of incremental angle marks on a signal-gen... | 05/08/2007 |
| 7185628 | Continuous engine reverse rotation detection system A reverse rotation detection system for an engine with at least one camshaft and a crankshaft includes a camshaft position sensor that generates a camshaft position signal based on a rotation of the camshaft. A second sensor input device generates a crankshaft posit... | 03/06/2007 |
| 7184876 | Device and process for determining the position of an engine Device for determining the position of an engine includes: a sensor that has a rotary part and a fixed part, whereby said fixed part comprises: elements (for generating a first signal based on the position of the rotary part... | 02/27/2007 |
| 7159571 | Method for detecting reverse rotation for internal combustion engines In a method for detecting reverse rotation when starting an internal combustion engine having a sensor disk which is coupled to a crankshaft of the engine, the sensor disk having a marking via an alternating arrangement of teeth and tooth spaces, and a first sensor ... | 01/09/2007 |
| 7000598 | Bumpless crankshift position sensing Disclosed herein are methods of generating an active crank series of signals that is derived from at least two series of signals, wherein one or both of the series of signals have been modulated to produce two series of signals that resemble each other. Also disclos... | 02/21/2006 |
| 6968830 | Apparatus and method for suppressing internal combustion ignition engine emissions A method of reducing emissions from a large, medium speed fuel injected diesel engine of the type used on locomotives subject to transient modes of engine operation in which the engine is accelerated or increased loads are applied. The method comprises: monitor at l... | 11/29/2005 |
| 6871639 | Wire guide A wire guide (101) is disposable on a device such as a fuel injector (103). The wire guide (101) includes a channel (215) having one or more intermittently spaced fingers (213) along an open side of the channel (215). The fi... | 03/29/2005 |
| 6732713 | Crank angle detection apparatus Even if the engine is started from any crank angle position, it is possible to correctly determine the rotational direction of a crankshaft, so that fuel injection or ignition can be stopped when the crankshaft is rotating in the reverse direction. A measurement mem... | 05/11/2004 |
| 6679223 | Engine control system with cam sensor An engine control system executes fuel injection and ignition in accordance with a detected engine rotational position. The engine control system has a crank sensor on a crankshaft and a cam sensor on a camshaft. The crank sensor generates a first referen... | 01/20/2004 |
| 6640778 | Controlled variable computing apparatus for internal combustion engine Controlled variable computing apparatus for an internal combustion engine 101 includes, a revolution signal generating unit 111, 112, 121, 122 for outputting a revolution signal in synchronism with revolution of the internal combustion engine and a contro... | 11/04/2003 |
| 6619265 | Fuel injection control apparatus for internal combustion engine A fuel injection control apparatus for an internal combustion engine capable of expediting an initial explosion and hence enhancing an engine starting performance. The apparatus includes a crank angle sensor (1) for generating a crank angle signal indicat... | 09/16/2003 |
| 6575136 | Apparatus for detecting crank angle position in an internal combustion engine An apparatus for detecting crank angle position in an internal combustion engine, in which a first rotator, which is interlocked with the crankshaft, has a plurality of detectable parts in the rotation direction, the detectable parts on the first rotator ... | 06/10/2003 |
| 6341253 | Engine control apparatus with cylinder discrimination function An engine control apparatus generates a 30° CA signal which rises per 30° CA rotation based on a rotational signal from a crank angle sensor and counts up a value CNT of a crank counter by the 30° CA signal. It also reads the level of a cylinder identi... | 01/22/2002 |
| 6305353 | Electronic engine speed and position apparatus for camshaft gear applications An apparatus for sensing engine speed and engine angular position. A tone wheel with a plurality of reference indicators and a position indicator is mounted to a camshaft gear. The reference and position indicators rotate past a Hall Effect sensor which g... | 10/23/2001 |
| 6192868 | Apparatus and method for a cold start timing sweep The present invention provides an apparatus and method for controlling the fuel injection timing of a fuel injector in order to start an engine. The temperature of the engine is sensed and an engine temperature signal indicative of the temperature of actu... | 02/27/2001 |
| 6170468 | Fuel injection control system for internal combustion engine A fuel injection control system for an internal combustion engine can enhance the starting performance of the engine while avoiding restriction in respect to the degree of freedom in design of peripheral structure of fuel injector. The fuel injection cont... | 01/09/2001 |
| 6131547 | Electronic engine speed and position apparatus for camshaft gear applications An apparatus for sensing engine speed and engine angular position. A tone wheel with a plurality of reference indicators and a position indicator is mounted to a camshaft gear. The reference and position indicators rotate past a Hall effect sensor which g... | 10/17/2000 |
| 6125824 | Method of controlling the injection process in a high-speed 2-stroke fuel injection internal combustion engine Disclosed is a method for controlling the injection process in a high-speed two stroke internal combustion engine (11). The method includes providing a trigger signal fixedly related to the rotational angle of the crankshaft per revolution of the injectio... | 10/03/2000 |
| 5758625 | Method of synchronizing an internal-combustion engine without a cam position sensor A method of generating a phase signal over 720° for an internal-combustion engine comprises a multi-point electronic injection system operating sequentially, permitting firing in only some of the cylinders during the starting stage and detecting the angu... | 06/02/1998 |
| 5724943 | Electronic fuel injection system and ignition system A combined electronic ignition and fuel injection system for internal combustion engines utilizes a non-magnetic disk, attached to the engines shaft and rotates with the shaft, and contains permanent magnet along the periphery of the disk at intervals def... | 03/10/1998 |
| 5699769 | Controller for four-stroke cycle internal-combustion engine A controller for a four-stroke cycle internal-combustion engine, which has a single sensor mounted on a crankshaft and employs a single sequence of position signal pulses corresponding to crank angles, achieves reduced cost and higher accuracy even for an... | 12/23/1997 |
| 5647322 | Internal combustion engine control apparatus A control apparatus for an internal combustion engine capable of performing engine cylinder identification while ensuring a backup control upon occurrence of abnormality includes a first detector 81 for generating a first signal series REFC synchronously ... | 07/15/1997 |
| 5622153 | Device for and a method of detecting the backward revolution of a revolving component of an internal combustion engine For detecting a backward revolution of a revolving component of an internal combustion engine, with a sensor which senses a revolving component having at least one angular mark, the backward revolution is assumed when a prescribable value between two puls... | 04/22/1997 |
| 5622154 | Fuel system A fuel system for an internal combustion engine includes a controller which controls the operation of an engine fuel pump. Signals are supplied to the controller by a transducer which is responsive to the passage of teeth formed on the periphery of a whee... | 04/22/1997 |
| 5568141 | Waveform shaping apparatus A waveform-shaping apparatus for determining engine speed of an automotive vehicle is provided. The apparatus includes a waveform-shaping circuit including a comparator for comparing an input analog signal, alternating in synchronism with rotation of an e... | 10/22/1996 |
| 5549091 | 4-cycle engine and magnetic sensor A four-cycle engine including a magnetic detection sensor mounted on a non-magnetic cam shaft pulley which is rotated in operative association with a crank pulley for detecting a plurality of detecting portions formed on the magnetic detection member by c... | 08/27/1996 |
| 5460134 | Transmitter arrangement for cylinder identification in an internal combustion engine having n cylinders A transmitter arrangement for cylinder identification in an internal combustion engine having n cylinders, the arrangement comprises a transmitter disc driveable by a crankshaft of the internal combustion engine and having a plurality of angle marks and a... | 10/24/1995 |
| 5394851 | Electronic fuel injection system for large compression ignition engine An electronic fuel injection system for providing variable injection timing for a compression ignition engine having a per cylinder displacement volume of at least 5.5 liters includes individual fuel delivery mechanisms, such as a fuel pump having a const... | 03/07/1995 |
| 5269274 | Method and device for an open-loop control system for an internal combustion engine A control system for an internal combustion engine which includes a crankshaft sensor for sensing a crankshaft transmitter disk and a camshaft sensor for sensing a camshaft transmitter disk. Both sensors supply signals to a control device which calculates... | 12/14/1993 |
| 5267544 | Crank angle and cylinder number detecting system and method for internal combustion engine A crank angle and cylinder number detecting system for an engine has a disc secured to a camshaft of the engine and, a plurality of projections are formed on a periphery of the disc. A sensor is provided adjacent the disc so as to produce pulses. A patter... | 12/07/1993 |
| 5239962 | Engine control apparatus for a multi-cylinder engine An engine control apparatus for a multi-cylinder engine is provided which precisely controls a plurality of groups of cylinders on the basis of a plurality of reference position sensors, each of which senses a reference crank position of a corresponding g... | 08/31/1993 |
| 5199394 | Circuit arrangement for electronic control of an internal combustion engine The invention provides a circuit for electronic control of an internal combustion engines including injection valves that can be activated electrically as a function of regulated variables such as crankshaft position, engine speed, exhaust-gas composition... | 04/06/1993 |
