Did You Know...
...that it was melting ice cream that inspired the invention of the outboard motor? It was a lovely August day and Ole Evinrude was rowing his boat to his favorite island picnic spot. As he rowed, he watched his ice cream melt and wished he had a faster way to get to the island. At that moment the idea for the outboard motor was born!
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| Number | Title | Issue Date |
| 8141532 | Spark plug A peripheral wall extending portion is formed in such a manner that a front end side of a cylindrical hole of a metal shell projects forward in an axis O direction, and the peripheral wall extending portion comprising: a projecting portion formed into a projecting s... | 03/27/2012 |
| 8051822 | Spark plug and cylinder head assembly ensuring reliable ignition of air/fuel mixture A spark plug and cylinder head assembly includes a spark plug and a cylinder head of an engine. The cylinder head has a bore and a surface which faces a combustion chamber of the engine and on which the bore opens. The spark plug is fit in the bore of the cylinder h... | 11/08/2011 |
| 7975665 | Spark plug and internal combustion engine provided with the same A spark plug comprising a cylindrical portion which projects into a combustion chamber from an inner wall face of an engine head when the spark plug is fixed to the engine head, wherein the cylindrical portion has one or more ventilating portion comprised of a throu... | 07/12/2011 |
| 7849830 | Spark plug A spark plug for igniting a combustible gas mixture in an internal combustion engine includes an ignition electrode with an electrical supply line is connected thereto. A pipe housing is provided for enclosing the electrical supply line and a venting channel is prov... | 12/14/2010 |
| 7793632 | Ignition apparatus for an internal combustion engine An ignition apparatus for an internal combustion engine is small in size and has high reliability capable of withstanding or enduring a vibration environment of a vehicle to which the ignition apparatus is installed. The ignition apparatus includes a spark plug that... | 09/14/2010 |
| 7703428 | Spark plug and internal combustion engine in which the spark plug is disposed To provide a spark plug with improved heat resistance and an internal combustion engine in which that spark plug is mounted where there is good conduction of the heat near the opening on the combustion chamber side of the mounting hole for the spark plug provided in... | 04/27/2010 |
| 7347174 | Combustion promoting device for internal combustion engine Disclosed is a combustion promoting device for an internal combustion engine which derives high combustion efficiency and high power from the internal combustion engine. The combustion promoting device is provided with a combustion promotion inductor formed of a sup... | 03/25/2008 |
| 7328677 | Plasma-jet spark plug and ignition system A plasma-jet spark plug includes a metal shell, an electrical insulator retained in the metal shell, a center electrode held in an axial hole of the electrical insulator to define a cavity by a front end face of the center electrode and an inner circumferential surf... | 02/12/2008 |
| 7303132 | X-radiation scanning system having an automatic object identification and attribute information acquisition and linking mechanism integrated therein An x-ray object scanning-tunnel system for automatically acquiring and linking object identity and attribute information about each object transported therethrough while bearing a bar code symbol and/or graphical indicia on the exterior surface thereof. The system c... | 12/04/2007 |
| 7293541 | Combustion-type power tool having ignition proof arrangement A spark is shot between an ignition point of an ignition plug and an ignition ground. The spark is shot from an acute corner of a core of the ignition plug. A tip end of the core has an acute angle of not more than 45 degrees. With this arrangement, an emitting poin... | 11/13/2007 |
| 7267089 | Manually guided implement having a spark plug connector arrangement A manually guided implement comprising an engine housing that at least partially surrounds a cylinder of an internal combustion engine. The engine housing has a wall provided with an opening for a spark plug that is disposed in the cylinder. A spark plug connector a... | 09/11/2007 |
| 7250711 | Spark plug with increased durability and carbon fouling resistance A spark plug for an internal combustion engine is provided which includes a metal shell, a porcelain insulator, a center electrode, a main ground electrode, and auxiliary ground electrodes. Each of the auxiliary ground electrodes has an inner side surface facing the... | 07/31/2007 |
| 7234429 | Spark plug with increased durability A spark plug is provided which is designed to be compact without sacrificing a mechanical strength of a porcelain insulator. The spark plug includes a metal shell having a base end and a top end. The porcelain insulator is made of a hollow cylinder which includes a ... | 06/26/2007 |
| 7172483 | Method of making metallic shell for spark plug, method of making spark plug having metallic shell and spark plug produced by the same A method of making a metallic shell for a spark plug. The metallic shell includes a multi-stepped through hole, an intermediate tubular portion, a tip end side tubular portion and a base end side tubular portion. The through hole includes a large diameter hole secti... | 02/06/2007 |
| 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 |
| 7116041 | Spark electrode assembly A spark electrode assembly has an elongate electrode with an inner insulator arranged for operable attachment to a support structure. The inner insulator surrounds the electrode with one end of the electrode positioned adjacent a ground element across a spark gap an... | 10/03/2006 |
| 7109645 | Spark plug A spark plug includes a metallic housing, an insulator fixed in the metallic housing, a center electrode fixed in the insulator, a ground electrode opposed to the center electrode via a spark discharge gap, and a protective coat formed on the surfaces of a metallic ... | 09/19/2006 |
| 7073471 | Apparatus and method for improving engine performance A spark plug adapter allows for installation into the cylinder head of an internal combustion engine of an improved high-performance spark plug of configuration considerably different from that which the cylinder head was manufactured to accept. This is accomplished... | 07/11/2006 |
| 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 |
| 7007653 | Robust torch jet spark plug electrode A composition for forming an electrode for use in a torch jet spark plug is provided. The composition comprises a ceramic material, ceramic particles, and an electrically conductive material. The ceramic particles are dispersed within the ceramic material. At least ... | 03/07/2006 |
| 6992426 | Spark plug of an internal combustion engine A spark plug of an internal combustion engine, in particular for use in Otto-cycle gas engines, having an insulator body, at least one fixed ground electrode carrier arrangement and at least one fixed central electrode carrier, wherein a spark plug housing having at... | 01/31/2006 |
| 6848415 | Internal combustion engine with direct injection A four-stroke reciprocating-piston internal combustion engine includes a fuel injection device, which is arranged centrally in a combustion space and which introduces the fuel in the form of an injection cone into the combustion space, and includes at least one spar... | 02/01/2005 |
| 6794802 | Spark plug for an internal combustion engine and method for producing a spark plug The seal between the insulator and the center electrode is to be improved in a spark plug for an internal combustion engine comprising a shell (12), an insulator (16) located in the shell and composed of a sintered ceramic material, as well as a center... | 09/21/2004 |
| 6724132 | Spark plug for an engine for a cogeneration system In a side ground electrode type of spark plug, sizes of discharge members are optimized to reduce a useless portion in discharging to improve discharge wear resistance. A first discharge member mainly comprising Ir alloy is welded to the central electrode. A second ... | 04/20/2004 |
| 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 |
| 6670740 | High electrical stiction spark plug A spark plug includes a sparking electrode with a firing tip and a ground electrode. The ground electrode includes a toroidal member, having a convex outer surface, coupled to a support portion of a sleeve of the ground electrode. The toroidal member form... | 12/30/2003 |
| 6655334 | Ignition apparatus for use in internal combustion engine A plug hole pipe 79 has thread grooves 81 formed on an outer circumferential surface thereof and causes a spark plug 11 to be pressed against a cylinder head 51 when the plug hole pipe is fixedly attached to the cylinder head 51 through screw engagement. ... | 12/02/2003 |
| 6617769 | Spark plug and mounting structure of the same The spark plug has a top end portion of a main metal shell that is almost cylindrical on an outer circumferential face without having a plug attaching external thread screwed into the cylinder head. Further, the plug hole formed in the cylinder head has a... | 09/09/2003 |
| 6583538 | Spark plug Spark plug with an electrically insulating ceramic insulator (1), a metallic spark plug body (2), a ground electrode (3) and a middle electrode (4) which is located centrally in a hole (5) of the ceramic insulator (1), around the ignition-side end area on... | 06/24/2003 |
| 6573641 | Spark plug A spark plug is provided which comprises a center electrode and a ground electrode having at a free end portion thereof a discharge surface which is opposite to an axial end surface of the center electrode to provide therebetween a spark gap, wherein the ... | 06/03/2003 |
| 6557508 | Robust torch jet spark plug electrode A composition for forming an electrode for use in a torch jet spark plug is provided. The composition comprises a ceramic material, ceramic particles, and an electrically conductive material. The ceramic particles are dispersed within the ceramic material... | 05/06/2003 |
| 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 |
| 6495948 | Spark plug The present invention relates to improved spark plugs for igniting a fuel charge in an internal combustion engine, and is particularly concerned with an improved spark plug construction which improves combustion pressure and fuel mileage and diminishes ex... | 12/17/2002 |
| 6470845 | Spark plug for internal combustion engine In a spark plug for an internal combustion engine, having a fitting screw portion with a diameter of M10. An axial distance A between an end surface of a fitting piece and an other end surface of a noble metal chip is set within a range of 3 mm to 8 mm, a... | 10/29/2002 |
| 6382159 | Temperature and pressure activated pressure relieving spark plug A spark plug for venting excessive engine cylinder pressure may be either pressure or temperature activated. A vent passage is created in a conventional spark plug by drilling an air vent through the housing of a conventional spark plug to a point that ex... | 05/07/2002 |
| 6363898 | Quick replacement igniter assembly A two-piece igniter includes an outer housing that includes a cylindrical member having an outer wall and an inner wall that defines a passage through the outer housing. The igniter further includes a plug member adapted to fit within the passage of the o... | 04/02/2002 |
| 6310430 | Spark plug having a metallic terminal within a through-hole A spark plug for attachment to a cylinder head includes a metallic shell including a tip-end side having an open tip end and a tail-end side having an open tail end. The metallic shell has an attachment screw portion peripherally formed at the tip-end sid... | 10/30/2001 |
| 6304023 | Spark plug for an internal combustion engine having a helically-grooved electrode A spark plug for an internal combustion engine comprising a center electrode having a shank portion which is fluted. The flutes have at least one edge which protrudes through an opening in a ground electrode of the spark plug. The principle use is for lea... | 10/16/2001 |
| 6232703 | Multiple electrode igniter An igniter for a combustor of a gas turbine comprises a ground shell electrical conductor which provides the electrical ground path back to the spark source. The spark source connects to the conductor and a ground return path connects to the ground shell.... | 05/15/2001 |
| 6152095 | Quick replacement spark plug assembly A two-piece spark plug includes an electrically conductive outer housing including a cylindrical member having an outer wall and an inner wall, the inner wall defining a passage through the outer housing, and a plug member releasably coupled within the ou... | 11/28/2000 |
