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| Number | Title | Issue Date |
| 7753021 | Vehicles including frame defining spark plug access aperture and methods A vehicle, such as a motorcycle, includes an engine and a frame. The engine includes a cylinder housing and a spark plug. The cylinder housing defines a spark plug aperture. The spark plug is received within the spark plug aperture. The frame supports the engine and... | 07/13/2010 |
| 7305940 | Combustion-type power tool having ignition proof arrangement In the combustion-type power tool, a first shelter wall and a second shelter wall are disposed to partially surround an area between an ignition plug and an ignition ground. Two gaps are provided between the first and second shelter walls. The first shelter wall ext... | 12/11/2007 |
| 7216622 | Wiring harness with integrated component heat shield A heat shield and heat shield assembly for protecting components exposed to heat are disclosed. The heat shield includes a shroud shaped to cover the component, the shroud having heat reflective layers and a heat insulating layer. The shroud is attached to a clip fo... | 05/15/2007 |
| 7124724 | Air-cooled ignition lead An air-cooled ignition lead for use with aircraft engines to conduct high voltage ignition pulses between an exciter and an igniter. The ignition lead includes a center conductor covered by an insulation jacket for electrical isolation. Radially spaced outwardly fro... | 10/24/2006 |
| 7124725 | Engine spark plug grounding structure, grounding wiring apparatus, and grounding wiring method A grounding member made of a spring steel includes a hexagonal top with a through hole, contact pieces extending from straight sides of the hexagonal top, and a grounding strip brazed to one of the contact pieces. The grounding member attaches to a spark plug with a... | 10/24/2006 |
| 7025037 | Internal-combustion engine with precombustion chamber and controlled ignition The disclosure concerns an internal combustion engine with controlled ignition having at least a combustion chamber (4), means (8, 18) for injection of fuel or an air-fuel mixture into the combustion chamber (4), ignition means (7) to gen... | 04/11/2006 |
| 7017566 | Ignition device for an internal combustion engine An insulator includes a plug side cylindrical portion having an inner space for accommodating a center electrode and a coil side cylindrical portion extending in a direction departing from a combustion chamber. The high-voltage portion of an ignition coil is entirel... | 03/28/2006 |
| 6953017 | Plug cap mount structure for engine A plug cap guide for enhancing the reliability of mounting a plug cap to a rear portion of a spark plug. The plug cap guide is formed in a hollow cylindrical shape so as to contain a plug cap therein and to have a tip end portion insertable in a plug hole. The plug ... | 10/11/2005 |
| 6703770 | Spark plug attachment structure and spark plug therefor A spark plug has a central electrode, an insulator surrounding the central electrode and a metallic shell retaining therein the insulator and provided with no thread thereon. The spark plug is clearance fitted in a plug hole of a cylinder head, without be... | 03/09/2004 |
| 6598389 | Insulated heat shield A heat shield provides thermal insulation and reduced noise transmission for under-the-hood vehicular engine components, such as exhaust manifolds. The structure is formed in three layers: an outer metal layer to provide structural integrity, a center ins... | 07/29/2003 |
| 6508216 | Spark plug boot keeper assembly A spark plug boot keeper assembly interconnects between a spark plug boot and an internal surface of a surrounding structure which defines an elongated spark plug well. A pivoting member of the assembly is located above an annular upper shelf of the inter... | 01/21/2003 |
| 6467447 | Spark plug boot keeper assembly A sparkplug boot keeper assembly interconnects between a heat shield and an ignition wire boot of a spark plug. A spring clip is pre-assembled internally to the heat shield which then engages a bottom portion of the spark plug after the spark plug is thre... | 10/22/2002 |
| 6374816 | Apparatus and method for combustion initiation An apparatus for combustion initiation in an internal combustion engine is provided. A capacitive spark plug boot uses the engine cylinder head as an outer capacitor member. The capacitive spark plug boot contains the inner capacitor member and an insulat... | 04/23/2002 |
| 6360706 | Shield and spring interface to a spark plug from a pencil coil An interface device for interfacing a pencil coil to a spark plug is provided. The interface device comprises a substantially C-shaped spring adapted to mechanically and electrically engage a pencil coil shield and also adapted to make electrical contact ... | 03/26/2002 |
| 6357408 | System and method for eliminating pocket sparking in an internal combustion engine A fuel injected, internal combustion engine that is protected from detrimental ignition due to pocket sparking. The engine includes one or more cylinders into which fuel is injected by an injector. A spark plug is used to ignite the fuel-air mixture withi... | 03/19/2002 |
| 6358072 | Aircraft ignition cable connector An aircraft ignition cable connector includes a radio-shielded ignition cable. The cable has an outer insulating cover, a shielding conductor, an inner insulating layer, and a center conductor. The cable is encased in a flexible, conducting, elbow tube. T... | 03/19/2002 |
| 6193528 | Cam lock spark plug wire connection A spark plug connector (10) includes a cap (22) that mounts a terminal (30) for relative rotation with respect to a lock body (50) and outer heat shield (12). The lock body has an oval opening (58) aligned about a snap ring (48) of the terminal. When the ... | 02/27/2001 |
| 6085710 | Heat shielding structure for internal-combustion engines A plug boot contains an ignition cable which is fitted with the stud terminal of a spark plug extending from an engine cylinder block. This plug boot is covered with a heat shield, and further with an auxiliary heat shield. The cylinder-side end portion o... | 07/11/2000 |
| 5992364 | Internal combustion engine with direct fuel injection In an internal combustion engine with direct fuel injection, which comprises a number of operating elements each including a combustion chamber delineated by an internal wall of a cylinderhead and a piston movably disposed in a cylinder, an injector mount... | 11/30/1999 |
| 5785035 | Ignition device with series gap having shielding case An ignition device with a series gap includes a series gap assembly having therein a discharge tube. A shielding case is provided to cover the series gap assembly. The shielding case is made of a conductive material and arranged to be in contact with a cy... | 07/28/1998 |
| 5603306 | Ignition cable means for eliminating inerference An ignition coaxial cable includes at least a braided layer of copper wires surrounding a central or inner conductor existing at a longitudinal center of the coaxial cable for shielding and grounding the interference caused by the high voltage carried by ... | 02/18/1997 |
| 5476695 | Sparking plug cap A sparking plug cap for internal combustion engines which is made of a resin selected from the group consisting of an alloy of polyphenylene sulfide and polyphenylene oxide, polyarylate, polyether imide and a liquid crystalline polymer, which sparking plu... | 12/19/1995 |
| 5382170 | Coupling construction A coupling construction for coupling a high-voltage terminal of an ignition coil for use in an internal combustion engine and an electric conductor with each other. The high-voltage terminal is inserted into the electric conductor. An engaging ring engage... | 01/17/1995 |
| 5344328 | Spark plug keeper To be utilized to maintain a spark plug in electrical engagement with an electric boot, a spark plug keeper having a ring-shaped base adapted to receive a lower portion of the spark plug therein and to bear against the underside of a hex nut included on t... | 09/06/1994 |
| 5188537 | Slippage preventer for an ignition terminal cable A slippage preventer for an ignition cable terminal comprises a holder cap 11 for covering a head of a grommet 3, a holder body 10 having an opening 10a into which the grommet is inserted and for covering a lower hanging portion, and locking means provide... | 02/23/1993 |
| 5127840 | Spark plug connector A spark plug connector for connecting an ignition cable to a recessed contact button of a spark plug comprises a boot assembly and a terminal assembly. The boot assembly includes a thermoplastic tubular boot that has an internal suspended terminal support... | 07/07/1992 |
| 4974559 | Combustion system and combustion apparatus for internal combustion engine A combustion apparatus and a combustion system for an internal combustion engine wherein a funnel-shaped cone with an orifice at the apex thereof is provided in a combustion chamber and spaced from an ignition apparatus so that as a gaseous, combustible m... | 12/04/1990 |
| 4748946 | SOHC type internal combustion engine An SOHC type internal combustion engine having a cam shaft for opening and closing intake and exhaust valves via rocker arms, the cam shaft being held between a cam shaft receiving wall of a cylinder head and a cam shaft holder which is secured to the cam... | 06/07/1988 |
| 4743211 | Connecting device for ignition system of motor vehicle A connecting device for ignition cables and a component in motor vehicle ignition system having a plurality of ignition cables with a L-shape hood of elastic materials which is attached to each of the cable terminals, housing of connecting device with hoo... | 05/10/1988 |
| 4715337 | Engine ignition system with an insulated and extendable extender An ignition system of an engine has a coil which is spaced away from an igniter to protect the coil from heat of a combustion chamber and combustion gas leakage. The electrical connections between the coil and igniter of current design practice have not p... | 12/29/1987 |
| 4637358 | Spark plug cap apparatus A spark plug cap apparatus for an internal combustion engine having relatively deep and generally vertical spark plug receiving bores. The upper end of the bore is provided with an annular protrusion. A resilient head cover has a bent flange for extending... | 01/20/1987 |
| 4534322 | Arrangement for insertion of spark plugs in cylinder head Arrangement for inserting a spark plug in a V-type engine cylinder head, comprising a separate sleeve surrounding the spark plug and removably insertable in the wall of the combustion chamber by screw threading. The spark plug extends through the cam chai... | 08/13/1985 |
| 4159441 | Shielding and retaining system for vehicle engine electrical components A shielding and retaining system for vehicle engine electrical components, and particularly, components forming part of the ignition system thereof such as the spark plugs, ignition coil and distributor. The spark plug, when located in the engine block, i... | 06/26/1979 |
| 4146004 | Internal combustion engine including spark plug anti-fouling means Disclosed herein is an internal combustion engine including an ignition port having an outlet opening into a cylinder combustion chamber, a spark plug mounted in the ignition port, and a deflector located on the cylinder head adjacent the ignition port ou... | 03/27/1979 |
| 4145106 | Shielding device for oriented spark plugs A shielding device for spark plugs which are oriented in an engine block by a key and keyway means such that the electrodes of the spark plug are located in a predetermined orientation in a combustion chamber in the engine. The spark plug is secured in pl... | 03/20/1979 |
| 4078534 | Anti-interference device for internal combustion engines The protection against interference emitted by automobile internal combustion engines or other vehicles is provided by an element for a spark plug or for a distributor, comprising a shield 3, a resistor 4 increasing with the frequency to be filtered and a... | 03/14/1978 |
| 3965879 | Radio frequency interference suppression apparatus An ignition wiring system having the leads formed as a wire coil about a magnetizable core defines a distributed constant resistive-inductive series impedance. A metal shield is located over the spark plug proper and electrically connected to the engine g... | 06/29/1976 |
| 3935852 | Spark plug connector and ignition coil module for engine ignition system A module for use in the ignition system of a spark ignited engine combines in one unit a spark plug connector or cap and an ignition coil for converting low voltage current changes into the high voltage pulses required for firing the associated plug, the ... | 02/03/1976 |
