Actor Zeppo Marx patented a "Cardiac Pulse Rate Monitor" in 1969.
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| Number | Title | Issue Date |
| 7191752 | Energy storing starter assembly An energy storing starter assembly comprising a pulley, a hub and a buffering component. The buffering component provides a resilient connection between the pulley and the hub, and is designed to store and transmit energy between the pulley and the hub. The ends of ... | 03/20/2007 |
| 7156075 | Ignition method with stop switch for internal-combustion engines For stopping an internal combustion engine, a stop switch prevents the triggering of the ignition. A controller in the ignition circuit determines the state of the stop switch by evaluating signals on the state of the internal combustion engine, corresponding inform... | 01/02/2007 |
| 7100589 | Multi-spark type ignition system A multi-spark type ignition system for an internal combustion engine has a compact energy storage coil. The multi-spark type ignition system includes a energy storage coil, an energy storage capacitor, a first power transistor that switches on or off supply of elect... | 09/05/2006 |
| 7091635 | Motor/flywheel assembly with shrouded radial cooling fan A flywheel/motor assembly is disclosed that comprises a motor housing having a sidewall and an end wall extending substantially perpendicularly from the sidewall. The end wall enclose a motor assembly having a rotatable shaft extending therefrom. The motor housing h... | 08/15/2006 |
| 7012405 | Charging circuit for secondary battery A charging circuit for a secondary battery includes a constant-voltage circuit part outputting one of a plurality of predetermined constant voltages and charges the secondary battery by applying the constant voltage thereto, a detection circuit part detecting a batt... | 03/14/2006 |
| 7004134 | Engine generator A positioning pin is knocked onto a crankshaft of an engine and a key way is formed in a boss of a first flywheel. When an outer rotor type generator is connected with the engine, the boss of the first flywheel is fitted over the crankshaft so as to adjust the posit... | 02/28/2006 |
| 6843225 | Controller for control at engine startup A control unit for engine startup includes a throttle valve, a bypass air quantity-regulating valve, an ignition coil, a bypass air quantity controller, an ignition timing feedback controller, and a multi-spark controller. The throttle valve is disposed in an intake... | 01/18/2005 |
| 6691689 | Rotation direction detector in ignition equipment of an internal combustion engine Apparatus and method for detecting the direction of rotation of an internal combustion engine using a magnet wheel which moves past an electrical ignition coil. For each revolution, at least one current or voltage pulse is induced in the coil having a pol... | 02/17/2004 |
| 6581584 | Ignition control system for internal combustion engine An ignition control system for an internal combustion engine comprising a signal generator to generate pulse signals at a peculiar rotation angle position of the internal combustion engine and a position detection circuit to output a position detection si... | 06/24/2003 |
| 6314938 | Starting system for spark ignition engine A starting system for a manual only pull start internal combustion engine with a starting pulley, a pull cord wrapped around the starting pulley, a rotor selectively engageable with the starting pulley, and an ignition module located adjacent to rotor. Th... | 11/13/2001 |
| 6311662 | Drive adapter for a generator/magneto A drive adapter which adjusts the timing of an automotive generator/magneto ("magneto")for use with a two cylinder motorcycle engine. The drive adapter has a rotor shaft which connects to the crankshaft of a motorcycle engine. The rotor shaft is connected... | 11/06/2001 |
| 6053155 | Ignition mounting arrangement for outboard motor An ignition arrangement for an internal combustion engine having an output shaft supported for rotation about an axis. The engine includes an engine housing at least partially enclosing the output shaft. Oil seals at least partially surround the output sh... | 04/25/2000 |
| 5992380 | Ignition timing control system for industrial engines An ignition timing control system for an industrial engine or small engines used on lawn mowers, etc. is provided. In such an industrial engine, a pulser coil outputs an alternating current signal in response to movement of a magnet which rotates together... | 11/30/1999 |
| 5875763 | Internal combustion engine with temperature dependent timing of spark event A magneto-based, variable-timing ignition system for an internal combustion engine is provided that maintains at least one operating parameter of the engine within a predetermined limit. An electronic controller sets the timing of spark events based on en... | 03/02/1999 |
| 5551397 | Digitally controlled magneto ignition system with alternate timing A digitally controlled magneto provides for the precise control of the timing advance profile for an internal combustion engine. A micro-controller or a micro-processor provides the digital control by using inputs from engine sensors to determine the engi... | 09/03/1996 |
| 5544633 | Magneto with dual mode operation An ignition system is provided for an internal combustion engine that operates in two modes. In a first mode, the timing of the spark event is under electronic control. In a second mode, the timing of the spark event is fixed and synchronized to the mecha... | 08/13/1996 |
| 5392747 | Circuit for supplying voltage to a microprocessor in an ignition circuit for an internal combustion engine The invention is directed to a circuit for providing a controlled voltage supply to a microprocessor in an ignition circuit of an internal combustion engine equipped with a spark plug. The circuit includes: a generator having an induction coil and magneti... | 02/28/1995 |
| 5383433 | Microprocessor-controlled inductive ignition system A microprocessor-controlled inductive ignition system uses a magneto inductive ignition circuit at engine starting speeds, and a microprocessor-controlled ignition circuit at engine running speeds. The microprocessor senses the ignition firings, computes ... | 01/24/1995 |
| 5265573 | Inductive discharge ignition system for internal combustion engines An inductive discharge ingnition system for internal combustion engines, comprising a permanent magnet rotating syncronously with the engine and passing in front of an ignition coil and a control coil during its movement. The control coil controls a contr... | 11/30/1993 |
| 5159916 | Ignition timing control member supporting structure of outboard motor An outboard motor having an improved timing plate mounting arrangement for its ignition system. The mounting plate has a hub portion that is journaled on the outer side of a cylindrical extension of the crankshaft wall and is held in place by a retainer p... | 11/03/1992 |
| 5058543 | Electronic ignition module An electronic ignition module for an internal-combustion engine that is supplied with sparking energy from a rotating magnet includes a switchable semiconductor device through which current in the primary of an ignition coil is to be conducted. A portion ... | 10/22/1991 |
| 4911126 | Transistor ignition circuit The present invention discloses a multiple spark transistor ignition circuit which is able to provide negligible retardation of ignition time, and/or prevent ignition with reverse rotation and/or provide an additional advanced spark and/or govern maximum ... | 03/27/1990 |
| 4817577 | Breakerless ignition system with electronic advance A magneto ignition system includes a rotating magnet driven past a primary winding for firing the engine. The magneto generates a speed dependent signal having a following current pulse and a leading current pulse of a smaller amplitude than the following... | 04/04/1989 |
| 4727851 | Magneto ignition system for an internal combustion engine To reduce spurious sparks, and then misfire of an ICE having a magneto with an E armature, upon approach of a magnet (23) in a pole wheel (13) to the leading leg (26) of the E core at high speed ranges of the ICE, the magnetic reluctance of the magnetic p... | 03/01/1988 |
| 4694814 | Ignition system for internal combustion engines with a magnet generator A control circuit for an ignition system having a magnet generator provides an abrupt adjustment of the ignition time point toward an advanced ignition when a predetermined upper speed range of an engine is reached. The control circuit includes a frequenc... | 09/22/1987 |
| 4646696 | Programmed electronic advance for engines The spark plug ignition advance control for a multiple cylinder internal combustion engine has a spark ignition circuit associated with each cylinder. The circuit includes an SCR trigger operative to cause the ignition spark. A pulse generator is associat... | 03/03/1987 |
| 4570595 | Ignition device of an i.c. engine A microcomputer is used in the invention for the control of the ignition function of an ignition system of an i.c. engine. The limitation of r.p.m. of the engine at high r.p.m. is brought about by an acurately developed procedure of delayed ignition in tw... | 02/18/1986 |
| 4562811 | Ignition circuit An electronic circuit device for ignition pulses for an i.c. engine having a two- or three pole magnetic system generating positive and negative pulses. One of the pulses is used for ignition energy and the other for power supply of electronic equipment. ... | 01/07/1986 |
| 4553517 | Ignition system with additional functions A microcomputer is used in the invention for control of the ignition functions of an ignition system of an i.c. engine. A switch (17) in an operating handle or the like is connected via a transistor to a digital input of the computer. This reads the statu... | 11/19/1985 |
| 4515118 | Magneto ignition system, particularly for one-cylinder internal combustion engines To provide operating energy to an ignition instant control circuit, for example a microprocessor (22) which controls operation of a semiconductor switching stage (20) without detracting from the energy output of the magneto coil (14), the energy in the vo... | 05/07/1985 |
| 4462363 | Ignition system for internal combustion engine This invention relates to an ignition system for an internal combustion engine in which an advance characteristic is provided by utilizing a discharge of a capacitor. The ignition system comprises an ignition coil, a semiconductor switch to control a prim... | 07/31/1984 |
| 4448179 | Engine including means for retarding sparking operation to control engine overspeed Disclosed herein is an internal combustion engine including a mechanism for providing a potential capable of producing a spark when applied to a spark plug, first and second trigger means respectively and selectively operable for applying the potential to... | 05/15/1984 |
| 4428333 | Electronic ignition device for combustion engines The ignition coil of an electronic ignition system, wherein a voltage is induced in the coil by way of a magnet wheel, has an auxiliary coil connected to charge a capacitor by way of a diode. The different voltage of the auxiliary coil and capacitor contr... | 01/31/1984 |
| 4403593 | Electronic switching for solid state ignition Breakerless ignition system of the inductive type is used to provide ignition pulses for an internal combustion engine which substantially duplicates the timing performance of a breaker-point magneto. The system utilizes a transistor for making and breaki... | 09/13/1983 |
| 4402298 | Ignition system trigger circuit for internal combustion engines An improved trigger circuit for a magneto-type ignition system is described. The trigger circuit includes a first generating coil for supplying current flow to a primary winding of the ignition coil, a transistor for controlling the current flow through t... | 09/06/1983 |
| 4378769 | Digital ignition control for a magnetopowered ignition system of an internal combustion engine In an ignition system for an internal combustion engine, a digital system for computing the timing advance is provided. Constants approximating the curve of timing advance v. engine speed are stored in a microprocessor. The positive half waves of primary ... | 04/05/1983 |
| 4329950 | Magneto ignition system with increased spark energy On-off oscillations immediately following the initiation of the spark in a magneto ignition system are prevented by a timing circuit the capacitor of which is charged continually even during the spark time and whose discharge time constant exceeds 10 μs.... | 05/18/1982 |
| 4270509 | Breakerless ignition system Conventional breaker points in an engine ignition system are replaced by switching means comprising a transistor device and a biasing coil that is coupled with a core and cooperates with a magnet assembly rotating in timed relation to the engine cycle. Th... | 06/02/1981 |
| 4201171 | Ignition system for a multicylinder engine An ignition system for a multicylinder engine comprising a magneto having an igniting exciter coil to induce an AC voltage in synchronism with rotation of the engine; ignition coils having secondary coil portions respectively connected to ignition plugs f... | 05/06/1980 |
| 4188929 | Internal combustion engine magneto-type ignition system with electronically controlled spark advance To provide for electronically controlled spark advance of the ignition instant in a transistorized magneto ignition system, the ignition instant is controlled by a threshold switch responsive to voltage generated by the magneto, the threshold being connec... | 02/19/1980 |