| Patent Number |
Title Of Patent |
Date Issued |
| 7449822 |
Structure of spark plug ensuring stability in location of production of sparks |
November 11, 2008 |
| A small-sized spark plug is provided which ensures the stability in the location of production of sparks between center and ground electrodes. The center and ground electrodes have joined thereon cylindrical members such as noble metal chips which are opposed to each other through a spar |
| 7408294 |
Spark plug with high capability to ignite air-fuel mixture |
August 5, 2008 |
| A spark plug according to the invention includes a metal shell, a hollow insulator, a center electrode, and a ground electrode. The insulator has a first end protruding into a combustion chamber of an engine and a second end opposite to the first end in the lengthwise direction of the |
| 7282844 |
High performance, long-life spark plug |
October 16, 2007 |
| A spark plug includes a metal shell, an insulator, a center electrode, a ground electrode, a first noble metal chip, and a second noble metal chip. The metal shell has a threaded portion with an outer diameter of equal to or less than 14 mm for installing the spark plug to an internal |
| 7267116 |
Spark plug and ignition apparatus using same |
September 11, 2007 |
| A power-saving type of ignition apparatus is provided with a spark plug of which electrodes (30, 40) are regulated in their shapes to lower an amount of energy required for its ignition. To face to a tip (31) of a center electrode (30) extending from a mounting bracket (10), a cylind |
| 7183702 |
Spark plug with high insulation properties and high capability to ignite air-fuel mixture |
February 27, 2007 |
| A spark plug according to the invention includes a metal shell that has a threaded portion with an outer diameter of 10 mm or less, or equal to 12 mm, an insulator, a center electrode, and a ground electrode. The spark plug has an improved structure in which an end portion of the insulat |
| 7170219 |
Spark plug with multiple ground electrodes |
January 30, 2007 |
| A spark plug according to the present invention includes a metal shell, an insulator, a cylindrical center electrode, a first ground electrode, and a second ground electrode. The first ground electrode is aligned with the center electrode in the axial direction of the center electrode to |
| 7122948 |
Spark plug having enhanced capability to ignite air-fuel mixture |
October 17, 2006 |
| A spark plug includes a metal shell, an insulator, a center electrode, and a ground electrode. The metal shell has a threaded portion with an outer diameter of equal to or less than 10 mm, or equal to 12 mm for installing the spark plug in an internal combustion engine. The dimensional |
| 7109646 |
Spark plug having center electrode with columnar portion and conical portion |
September 19, 2006 |
| A spark plug is composed of a main metal fitting having a cylindrical structure, an insulator disposed inside the cylindrical main metal fitting, a center electrode fitted in the insulator in a manner that a front end portion of the center electrode projects outward over one end of t |
| 7086363 |
Spark plug and ignition apparatus using same |
August 8, 2006 |
| A power-saving type of ignition apparatus is provided with a spark plug of which electrodes (30, 40) are regulated in their shapes to lower an amount of energy required for its ignition. To face to a tip (31) of a center electrode (30) extending from a mounting bracket (10), a cylind |
| 6844662 |
Spark plug and ignition apparatus |
January 18, 2005 |
| At least one of a center electrode tip and a ground electrode tip is made of an iridium alloy. A discharge gap, formed between the center electrode tip and the ground electrode tip, is less than 1.1 mm. And, cross sections of the center electrode tip and the ground electrode tip are equa |
| 6767435 |
Bright surface structure and a manufacturing method thereof |
July 27, 2004 |
| A bright surface structure formed on a member made from metal or resin. A first structure includes: (a) a resin film coated on the member, and (b) a thin metal film formed on the resin film. The thin metal film is made from any one of stainless steel, titanium alloy and nickel alloy. A s |
| 6653767 |
Spark plug and ignition apparatus |
November 25, 2003 |
| At least one of a center electrode tip and a ground electrode tip is made of an iridium alloy. A discharge gap, formed between the center electrode tip and the ground electrode tip, is less than 1.1 mm. And, cross sections of the center electrode tip and the ground electrode tip are equa |
| 6397827 |
Spark ignition device for direct injection-type engines |
June 4, 2002 |
| An ignition device sets a total discharge period, each discharge period and each intermittent period of a multiple discharge are set by a control map in addition to the setting of a throttle opening, fuel injection timing, fuel injection period and ignition timing for the range of non-st |
| 6117280 |
Duplex coated steel composite products and method of manufacturing them |
September 12, 2000 |
| Duplex coated steel composite products comprising a first layer of a nitrd layer formed by applying glow discharge at a current density from 0.001 to 2.0 mA/cm.sup.2 to the surface of metal parts by using gaseous ammonia and gaseous hydrogen while maintaining the temperature of the |
| 6110571 |
Duplex coated steel composite products and method of manufacturing them |
August 29, 2000 |
| Duplex coated steel composite products comprising a first layer of a nitrided layer formed by applying glow discharge at a current density from 0.001 to 2.0 mA/cm.sup.2 to the surface of metal parts by using gaseous ammonia and gaseous hydrogen while maintaining the temperature of the |
| 6105552 |
Abnormal combustion detection apparatus and method for internal combustion engine |
August 22, 2000 |
| An abnormal combustion detection apparatus for an internal combustion engine quickly detects the occurrence of preignition by using a knock sensor. When the knock sensor detects an engine knocking, the ignition timing is delayed. If despite the delay of ignition timing, the knocking |
| 5791043 |
Process of producing metal catalyst carrier |
August 11, 1998 |
| To enable bonding flat and corrugated sheets at their contact points by laser welding or other welding methods while laminating and spirally winding the sheets, a process of producing a metal catalyst carrier for exhaust gas purification in the form of a metal honeycomb column composed |
| 5658536 |
Exhaust gas purifying apparatus |
August 19, 1997 |
| An exhaust gas purifying apparatus includes a carrier of a honeycomb structure which is made of at least one flat metal plate and at least one corrugated metal plate which is superimposed on the flat metal plate. A catalytic layer is formed on the surface of the carrier. The carrier |
| 5567395 |
Catalyst carrier for a catalytic converter for purifying an exhaust gas in an internal combustio |
October 22, 1996 |
| A flat-corrugated combined sheet 16 is obtained from a flat sheet 10 and corrugated sheets 12 and 14 which are welded together. The combined sheet 16 is rolled, so that a catalyst carrier 18 of a honeycomb structure to which an exhaust gas is contacted is obtained. At a middle part of th |
| 4807276 |
Re-transmission method and apparatus in communication system using public communication lines |
February 21, 1989 |
| In a communication system having an automatic transmission/reception function to perform data communications through telephone lines associated with teletex systems, facsimile systems and the like, re-transmission operations are performed when an addressee called for communications is |
| 4383659 |
Locking device for safety seat belts |
May 17, 1983 |
| A locking device for safety seat belts comprises a base member, a drum base member rockably mounted on the base member, a drum rotatably mounted on the drum base member, engagement members integral with the drum, a lock member capable of assuming a locking position in which it engages th |
