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    Method for manufacturing spark plug and caulking metallic mold
    2.
    发明授权
    Method for manufacturing spark plug and caulking metallic mold 有权
    火花塞和铆接金属模具的制造方法

    公开(公告)号：US06688932B2

    公开(公告)日：2004-02-10

    申请号：US10128437

    申请日：2002-04-24

    申请人： Hiroaki Nasu ,  Wataru Matsutani ,  Yoshito Uemura ,  Makoto Sugimoto ,  Hirohito Ito

    发明人： Hiroaki Nasu ,  Wataru Matsutani ,  Yoshito Uemura ,  Makoto Sugimoto ,  Hirohito Ito

    IPC分类号： H01T2102

    CPC分类号： H01T21/02 ,  C23C2222/10 ,  H01T13/20

    摘要： A method for manufacturing a spark plug, the spark plug includes: a cylindrical metal shell having a portion to be caulked and a tool-engaging portion that is to be attached on an engine; an insulator that is inserted into the metal shell and extends axially; and a caulking metallic mold, the method including caulking the portion to be caulked to be fixed to an outer circumferential face of the insulator with the caulking metallic mold, where in the caulking metallic mold includes a face, the face including a hard carbon film that includes an amorphous carbon phase, and the face is contact with or sliding to the portion to be caulked.

    摘要翻译： 一种用于制造火花塞的方法，所述火花塞包括：具有要铆接的部分的圆筒形金属壳体和要附接在发动机上的工具接合部分; 绝缘体，其被插入到金属壳体中并且轴向延伸; 以及铆接金属模具，该方法包括用铆接金属模将铆接部分铆接固定在绝缘体的外周面上，其中在铆接金属模具中包括一面，该表面包括硬碳膜， 包括无定形碳相，并且所述面与要被铆接的部分接触或滑动。

    Spark plug having a multi-layered electrode
    4.
    发明授权
    Spark plug having a multi-layered electrode 有权
    具有多层电极的火花塞

    公开(公告)号：US6121719A

    公开(公告)日：2000-09-19

    申请号：US168150

    申请日：1998-10-08

    申请人： Wataru Matsutani ,  Hiroaki Nasu

    发明人： Wataru Matsutani ,  Hiroaki Nasu

    IPC分类号： H01T13/20 ,  H01T13/39

    CPC分类号： H01T13/39

    摘要： A spark plug has a central electrode, an insulator, a metal shell and a ground electrode. The insulator is provided exterior to the central electrode. The metal shell is provided exterior to the insulator. The ground electrode opposes the central electrode. At least one of the central electrode and the ground electrode has a multi-layered structure comprising a core and a high heat conducting layer that covers at least part of the outermost surface of the core. An inner layer of the core is more heat conductive than the outermost layer of the core that is in contact with high heat conducting layer.

    摘要翻译： 火花塞具有中心电极，绝缘体，金属壳和接地电极。 绝缘体设置在中心电极的外部。 金属外壳设置在绝缘体的外部。 接地电极与中心电极相对。 中心电极和接地电极中的至少一个具有多层结构，其包括芯和覆盖芯的最外表面的至少一部分的高导热层。 芯的内层比与高导热层接触的芯的最外层更加导热。

    Spark plug and producing method therefor
    6.
    发明授权
    Spark plug and producing method therefor 失效
    火花塞及其制作方法

    公开(公告)号：US06768249B1

    公开(公告)日：2004-07-27

    申请号：US09645599

    申请日：2000-08-25

    申请人： Hiroaki Nasu ,  Wataru Matsutani

    发明人： Hiroaki Nasu ,  Wataru Matsutani

    IPC分类号： H01J1320

    CPC分类号： C23C22/36 ,  C23C2222/10 ,  H01T13/39 ,  H01T21/02

    摘要： In a spark plug, a complex chromate coat 42 that contains a chromium component and a phosphorus component as cationic components, at least 90 wt % of the chromium component being trivalent chromium and the phosphorus component being present in an amount of 1 to 15 wt % as calculated for PO4, is formed on the surface of the galvanized main metal shell 1 of a spark plug. If a silicon component is substituted for the phosphorus component, it may be present in an amount of 5 to 75 wt % as calculated for SiO2.

    摘要翻译： 在火花塞中，含有铬成分和磷成分作为阳离子成分的复合铬酸盐皮42，铬成分为三价铬的至少90重量％，磷成分的含量为1〜15重量％ 按照PO4计算，形成在火花塞的镀锌主金属壳1的表面上。 如果将硅组分代替磷组分，则其可以按SiO 2计算为5至75重量％的量存在。

    Spark plug with iridium-based alloy chip
    7.
    发明授权
    Spark plug with iridium-based alloy chip 有权
    火花塞与铱基合金芯片

    公开(公告)号：US06528929B1

    公开(公告)日：2003-03-04

    申请号：US09437359

    申请日：1999-11-10

    申请人： Wataru Matsutani ,  Hiroaki Nasu

    发明人： Wataru Matsutani ,  Hiroaki Nasu

    IPC分类号： H01T1339

    CPC分类号： H01T13/39

    摘要： A spark plug includes a chip made of iridium. The distance E between the chip and a copper core of a core rod of the center electrode is not greater than 3.5 mm. The core rod has a diameter D1 of 1.4 mm to 2.6 mm. The ratio of a chip diameter D2 to the core rod diameter D1, or D2/D1, is not greater than 0.50.

    摘要翻译： 火花塞包括由铱制成的芯片。 芯片与中心电极芯棒的铜芯之间的距离E不大于3.5mm。 芯棒的直径D1为1.4mm至2.6mm。 芯片直径D2与芯棒直径D1或D2 / D1的比例不大于0.50。