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Magician Harry Houdini patented a "Diver's Suit" enabling the wearer to "quickly divest himself of the suit while being submerged and to safely escape and reach the surface of the water."
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| Number | Title | Issue Date |
| 7681562 | Multiple primary coil ignition system and method A first current is supplied to a first primary winding of an ignition coil and a second current is supplied to a second primary winding of the ignition coil. A voltage is generated across a secondary winding of the ignition coil and an ignition spark current is gene... | 03/23/2010 |
| 7212092 | Device for energy storage and energy transformation A device for energy storage and energy transformation is described, in particular an ignition coil of an ignition system of a motor vehicle, having a magnetically active I core, which is surrounded by a first coil former having a winding connected to a supply voltag... | 05/01/2007 |
| 7202767 | Ignition apparatus for an internal combustion engine An ignition apparatus for an internal combustion engine includes a central core, a primary coil and a secondary coil arranged outside of the central core, a magnet arranged in abutment with one end face of the central core and magnetized in a direction opposite to t... | 04/10/2007 |
| 7152592 | Ignition coil for a combustion engine An ignition coil includes a primary coil carrying primary coil body, a low voltage connection area and a secondary coil inductively coupled with the primary coil for the provision of a high voltage for a spark plug of the combustion engine. The secondary coil is car... | 12/26/2006 |
| 7131939 | Toe stretcher The present invention relates to an exercise tool. More particularly, it relates to an exercise tool specifically devised as a toe stretcher to align, separate, and stretch toes. The toe stretcher comprises a frame with a separator for separating a plurality of toes... | 11/07/2006 |
| 6805109 | Igniter circuit with an air gap Ignition systems of the kind used to ignite a difficult-to-ignite fuel oil by using energy stored in a capacitor at a breakdown for creating an ignition arc at the electrodes of a resistive arc probe, having a semiconductor resistive film across spark electrodes of ... | 10/19/2004 |
| 6647974 | Igniter circuit with an air gap Ignition systems of the kind used to ignite a difficult-to-ignite fuel oil by using energy stored in a capacitor at a breakdown for creating an ignition arc at the electrodes of a spark plug, designed to preclude interference of contaminants with conducti... | 11/18/2003 |
| 6352069 | Ignition coil for internal combustion engines Ignition coil for internal combustion engines with two or more transformer stages connected in a cascade arrangement one behind another.... | 03/05/2002 |
| 6328025 | Ignition coil with driver An ignition coil having a core with a first leg and a second leg, a first primary winding arranged over the first leg, a second primary winding arranged over the second leg, a first secondary winding arranged over the first primary winding, a second secon... | 12/11/2001 |
| 6147849 | Multichannel ignition circuit A multichannel ignition circuit for controlling a supply of current to a plurality of ignition coils for use with an internal combustion engine. Each of the ignition coils includes a primary coil and a secondary coil. A controller generates the plurality ... | 11/14/2000 |
| 5954037 | Redundant magneto for race car The present invention is directed to a magneto having two sets of primary windings and no secondary windings which will allow the magneto to function as an ignition source even though one set of primary windings fail. Each primary winding provides current... | 09/21/1999 |
| 5806504 | Hybrid ignition circuit for an internal combustion engine An ignition circuit for an internal combustion engine. The ignition circuit includes a transformer having a secondary winding for generating a spark and having first and second primary windings, a capacitor connected to the first primary winding to provid... | 09/15/1998 |
| 5197449 | Ignition system for an engine An ignition system has a plurality of primary and secondary coils, ignition timing means for providing an ignition timing signal and current supply means for supplying a current to the primary coils in response to an ignition timing signal. A current is s... | 03/30/1993 |
| 4953519 | Dual contact ignition system for motocycle internal combustion engine An ignition system for a motorcyle two cylinder internal combustion engine includes magnetically coupled primary and secondary coils, spark plugs at the cylinders, a source of electrical current, and first and second pairs of contacts respectively control... | 09/04/1990 |
| 4836176 | Ignition apparatus of electronic distribution type for multi-cylinder internal combustion engine An ignition apparatus of electronic distribution type for a multi-cylinder internal combustion engine, comprising a plurality of ignition circuits each having an ignition coil and a power switching element for one or two cylinders of a multi-cylinder inte... | 06/06/1989 |
| 4658799 | Ignition coil assembly for internal combustion engines For a four cylinder engine, there are provided two ignition coil units, each including a primary coil and a secondary coil. The primary coil is wound around a center core made of grain oriented silicon steel, which forms a closed magnetic path for the mag... | 04/21/1987 |
| 4641626 | Electronic ignition device for interval combustion engines A current-interrupting type ignition device having an ignition coil having a primary winding, a secondary winding and an auxiliary winding disposed in the primary circuit, the number of turns of the auxiliary winding being less than that of the primary on... | 02/10/1987 |
| 4599985 | Ignition coil for multi-cylinder internal combustion engine To reliably provide ignition energy only to specific spark plugs (11, 12; 14, 15) of a multi-cylinder internal combustion engine (ICE), a double-E core has a main or common or central branch, and separate primary (6, 8) and secondary windings (10, 13) loc... | 07/15/1986 |
| 4572151 | Ignition system for internal combustion engines An ignition system for an internal combustion engine includes an ignition coil having a plurality of primary coils corresponding respectively to individual cylinders of the internal combustion engine, a basic ignition signal detector for producing basic i... | 02/25/1986 |
| 4562823 | Ignition device for internal combustion engine An ignition device for an internal combustion engine has a DC power source, first and second switching elements, a control signal generator for the switching elements, an ignition coil, and spark gaps. A first part of a primary coil of the ignition coil, ... | 01/07/1986 |
| 4522186 | Ignition circuit for an internal combustion engine An ignition circuit for an internal combustion engine has a flip-flop circuit (8), operated by narrow width output pulses (c, d) of an ignition timing computing circuit (4), thereby to distribute output pulses of a duty cycle control circuit (5) to igniti... | 06/11/1985 |
| 4509495 | Ignition coil for a multi-cylinder internal combustion engine To provide ignition energy to respective spark plugs of a multi-cylinder internal combustion engine (ICE) without a distributor, winding groups, each including a primary and secondary winding, are located on respective core portions of an iron core, which... | 04/09/1985 |
| 4493306 | Enhanced spark energy distributorless ignition system (B) A distributorless ignition system of an internal combustion engine has a supplementary spark energy module to increase spark energy. Two ignition coils each have secondary coils with split secondary center taps. Each of the primary windings is coupled to ... | 01/15/1985 |
| 4381757 | Continuous type ignition device for an internal combustion engine A pair of power transistors in a push-pull connection are connected with a pair of primary coils of a transformer acting as an ignition coil. Between the neutral point of the pair of the primary coils and a power source at least one diode is connected. Th... | 05/03/1983 |
| 4378779 | Ignition system for internal combustion engines An ignition system for an internal combustion engine includes two power transistors respectively connected to opposite ends of the primary winding of an ignition coil to interrupt the primary currents which flow from a power source through the mid-tap of ... | 04/05/1983 |
| 4361129 | Ignition system for internal combustion engines A contactless ignition system for internal combustion engines of the type including an ignition coil with two primary windings whose primary currents are alternately switched on and off by two power transistors, further includes two Zener diodes each havi... | 11/30/1982 |
| 4357927 | Ignition device for a multi-cylinder internal combustion engine An ignition device for a multi-cylinder internal combustion engine having an ignition coil, also positive and negative high voltages being alternately generated across the secondary winding of the ignition coil, and a distributor, the distributor comprisi... | 11/09/1982 |
| 4293798 | Inductive-capacitive cyclic charge-discharge ignition system An inductive-capacitive cyclic charge-discharge ignition system includes an ignition transformer primary winding in parallel with a capacitor and fed by an alternating current source providing a plural number of repetition cycles during each igniter firin... | 10/06/1981 |
| 4293797 | Inductive-capacitive cyclic charge-discharge ignition system An inductive-capacitive cyclic charge-discharge ignition system includes an ignition transformer primary winding in parallel with a capacitor and fed by an alternating current source providing a plural number of repetition cycles during each igniter firin... | 10/06/1981 |
| 4292569 | High energy modulation ignition system An ignition system uses a transformer with a primary winding and a secondary winding wherein the secondary winding is intermittently coupled to at least one igniter load. An electronic switch is connected to the primary winding. Such electronic switch has... | 09/29/1981 |
| 4140946 | Transient modulation ignition system An ignition system makes use of the Kettering transient voltage induced into the primary winding of an ignition transformer and utilizes a circuit which provides several voltage transients which are intermodulated to provide extremely high energy levels a... | 02/20/1979 |
