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| Number | Title | Issue Date |
| 7948158 | Plasma ignition system with recess porton in the center electrode A plasma ignition system includes an ignition plug attached to an engine and a high-voltage supply. The plug includes a center electrode serving as a positive pole, a ground electrode serving as a negative pole, and an insulating member insulating the center electro... | 05/24/2011 |
| 7188466 | Passive, high-temperature amplifier for amplifying spark signals detected in igniter in gas turbine engine A system for detecting spark in an igniter for a gas turbine engine. An igniter generates a plasma, or spark, somewhat similar to an automotive spark plug. In the invention, an inductive pick-up is positioned adjacent the igniter, to detect current pulses in the ign... | 03/13/2007 |
| 7122815 | Infrared radiation emitter An emitting source capable of radiating substantial energy in the near infrared spectrum and suitable for use in non-dispersive infrared gas analyzers or other devices is described. Operation can be steady state (DC) or pulsed at high frequency with excellent modula... | 10/17/2006 |
| 7093422 | Detecting spark in igniter of gas turbine engine by detecting signals in grounded RF shielding A system for detecting spark in an igniter for a gas turbine engine. An igniter generates a plasma, or spark, somewhat similar to an automotive spark plug. In the invention, an inductive pick-up is positioned adjacent the igniter, to detect current pulses in the ign... | 08/22/2006 |
| 7093421 | Spark igniter for gas turbine engine An igniter for a gas turbine engine. An igniter generates a plasma, or spark, somewhat similar to an automotive spark plug. In the invention, an auxiliary electrode is provided, which is embedded in and covered by a solid insulator. During initial phases of operatio... | 08/22/2006 |
| 7014086 | Ignition device for igniting a foil cartridge in an explosion-operated power tool An ignition device for igniting a foil cartridge (10) in an explosion-operated power tool includes an electrical insulator (24) arranged in the support (8), a pin-shaped electrode (25) located in the electrical insulator and having a tip ... | 03/21/2006 |
| 6531809 | Spark plug having ground electrode and intermediate electrode separated by insulating body A spark plug is described that includes a housing, an insulator nose attached to the housing, a center electrode inserted through the insulator nose and projecting over the insulator nose tip, an intermediate electrode separated from the center electrode ... | 03/11/2003 |
| 6265814 | Spark plug having a bypass electrode extending along a bypass path between center and ground electrode To excellently grow flame kernel while lowering breakdown voltage, a bypass electrode comprising a semiconductor material is installed in a path bypassing an inductive spark gap between a center electrode and a ground electrode, and the center electrode a... | 07/24/2001 |
| 6244247 | Ignition device for internal combustion engines In an internal combustion engine, an engine control device 40 judges based on a cooling water temperature of an engine in what state the engine is. When judged that the engine is in a cold state, the engine control device 40 produces an ignition signal to... | 06/12/2001 |
| 5950584 | Spark plug for forming a spark to jump between two electrodes A spark plug for forming a spark that jumps between two electrodes has an insulating body surrounded by a housing with a ground electrode. The insulating body has a center electrode therein, which projects beyond the ground electrode in the axial directio... | 09/14/1999 |
| 5852340 | Low-voltage type igniter plug having a semiconductor for use in jet and other internal combustion engines and a method of making the semiconductor An igniter plug is disclosed for use in jet and other internal combustion engines. The igniter plug has a center electrode having a firing tip, which is mounted within an insulator which in turn is mounted within an exterior metal shell. A ground electrod... | 12/22/1998 |
| 5793151 | Creeping discharge spark plug A spark plug in use for an internal combustion engine, includes an insulator placed in a metal shell in a manner to extend its front end beyond the metal shell, a center electrode is placed within an axial bore provided by the insulator, an outer electrod... | 08/11/1998 |
| 5731654 | Spark plug having a creepage spark gap A spark plug (10), for example for an internal combustion engine, having at least one center electrode (11) (high-voltage electrode) and at least one earth electrode (12), and an insulating spark plug insulator (13) and a creepage spark gap (14) between t... | 03/24/1998 |
| 5550424 | Spark plug for internal combustion engines A spark plug for igniting fuel/air mixtures in internal combustion engines, in particular in internal combustion engines of motor vehicles. On its insulating-body foot, the spark plug has a coating which is intended to protect against misfirings and cold-... | 08/27/1996 |
| 5449966 | Double sliding spark plug - thunder II A Double Sliding Spark Plug as a Volume Ignition System for Internal Combustion Engines causes ignition processes of the air-fuel mixture by two simultaneously conical or cylindrical sliding discharges between a conical or cylindrical high voltage electro... | 09/12/1995 |
| 5297510 | Volume ignition system A volume ignition system for internal combustion engines causes ignition processes of fuel by location of a high voltage electrode (1) of a spark plug inside an engine's cylinder. Electrical discharges are created basically from the high voltage electrode... | 03/29/1994 |
| 5187404 | Surface gap igniter An improved low voltage igniter of the type having an annular spark gap between a center electrode and annular ground electrode which is arranged coaxial with the center electrode. The spark gap is shunted by an insulator surface. Semiconducting material ... | 02/16/1993 |
| 5103136 | Igniter plug An igniter plug has a metallic shell, a front end of which has a tubular ground electrode. A hollow semiconductor tip is in the form of inversed frusto-cone shape, and placed within the tubular ground electrode. A tubular insulator is placed within the me... | 04/07/1992 |
| 4973877 | Low-voltage type igniter plug having semi-conductor structure for use in jet and other internal combustion engines A low-voltage type igniter plug having semi-conductor structure for use in jet and other internal combustion engines comprising; the semi-conducting body mounted adjacent a spark-gap in electrically contact with both center and ground electrodes, and esse... | 11/27/1990 |
| 4963784 | Spark plug having combined surface and air gaps A spark plug with combined surface discharge and air discharge gaps, wherein a central electrode (3), an insulator (2) surrounding the central electrode, and a ground electrode (4) surrounding the insulator (2) together with a spark plug body (1) are prov... | 10/16/1990 |
| 4873466 | Igniter plug An igniter plug comprising: a metallic shell having a diameter-reduced seat at one open end, the seat being tapered to progressively decrease its diameter as approaching at outside of the open end; a tubular insulator concentrically placed at an inner sid... | 10/10/1989 |
| 4814664 | Igniter with wear indicator A wear indicator for an igniter of the type having a center electrode, an annular ground electrode surrounding the center electrode, and a spark gap between the electrodes extending along a surface of a ceramic material. An annular wear indicating groove ... | 03/21/1989 |
| 4798991 | Surface-gap spark plug for internal combustion engines A spark plug for internal combustion engines comprises a center electrode enclosed in an insulating body enclosed in a metal housing, and a ground electrode. The insulating body has an end portion which faces the combustion chamber. An electrical field de... | 01/17/1989 |
| 4795937 | Spark plug with combined surface and air spark paths In a spark plug with combined surface and air spark paths comprising a center electrode, and insulator which surrounds the center electrode and which, at least in the end region of the center electrode, maintains a gap with respect thereto, and a ground e... | 01/03/1989 |
| 4142121 | Electrical igniters A surface-discharge igniter for a gas-turbine engine has a pellet of rod shape a part at least of the pellet surface being semiconductive so that when voltage is applied between electrodes connected at either end of the pellet it causes electrical dischar... | 02/27/1979 |
| 4092558 | Long distance discharge gap type spark plug A long distance discharge gap type spark plug comprising a center electrode, a porcelain insulator surrounding the center electrode and provided at its lower side with a firing portion made integral therewith and composed of a reduced diameter trunk wall,... | 05/30/1978 |
| 3974412 | Spark plug employing both corona discharge and arc discharge and a system employing the same A spark plug wherein corona discharge is employed to create a long arc and to determine, in part, the path of the arc, electrodes of the spark plug being shaped, oriented and positioned to create an arc of desired length and at a desired location as well ... | 08/10/1976 |
