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    • 3. 发明申请
    • Spark plug with ground electrode having mechanically locked precious metal feature
    • 具有接地电极的火花塞具有机械锁定的贵金属特征
    • US20060103284A1
    • 2006-05-18
    • US11322517
    • 2005-12-30
    • Darrren DownsMichael Garrett
    • Darrren DownsMichael Garrett
    • H01T13/20H01T13/36H01T13/34
    • H01T21/02H01T13/32
    • A ground electrode for a spark plug has a through hole located adjacent a firing end of the electrode, with a precious metal firing tip extending through the hole. The firing tip is compressed axially to define a bulging portion extending radially outwardly from its longitudinal axis to mechanically retain the firing tip within the through hole. The firing tip additionally has an enlarged head or otherwise expanded portion at each axial end of the tip to provide a second mechanical interlock of the tip to the ground electrode. The firing tip can then also be welded to further strengthen its connection to the ground electrode. A method of manufacturing the ground electrode and a spark plug containing the ground electrode is also disclosed.
    • 用于火花塞的接地电极具有邻近电极的烧制端的通孔,其中延伸穿过该孔的贵金属烧制尖端。 击发尖端被轴向压缩以限定从其纵向轴线径向向外延伸的凸出部分,以将烧制尖端机械地保持在通孔内。 点火尖端还在尖端的每个轴向端部处具有扩大的头部或其它扩张部分,以提供尖端与接地电极的第二机械互锁。 然后可以焊接点火尖以进一步加强其与接地电极的连接。 还公开了制造接地电极的方法和包含接地电极的火花塞。
    • 6. 发明申请
    • Spark plug with ground electrode firing tip
    • 火花塞带接地电极点火头
    • US20050093413A1
    • 2005-05-05
    • US10702378
    • 2003-11-05
    • Darren DownsMichael Garrett
    • Darren DownsMichael Garrett
    • H01T13/32H01T21/02H01T13/20
    • H01T21/02H01T13/32
    • A ground electrode for a spark plug has a through hole located adjacent a firing end of the electrode, with a precious metal firing tip extending through the hole. The firing tip is compressed axially to define a bulging portion extending radially outwardly from its longitudinal axis to mechanically retain the firing tip within the through hole. The firing tip additionally has an enlarged head or otherwise expanded portion at each axial end of the tip to provide a second mechanical interlock of the tip to the g round electrode. The firing tip can then also be welded to further strengthen its connection to the ground electrode. A method of manufacturing the ground electrode and a spark plug containing the ground electrode is also disclosed.
    • 用于火花塞的接地电极具有邻近电极的烧制端的通孔,其中延伸穿过该孔的贵金属烧制尖端。 击发尖端被轴向压缩以限定从其纵向轴线径向向外延伸的凸出部分,以将烧制尖端机械地保持在通孔内。 点火尖端还在尖端的每个轴向端部处具有扩大的头部或以其它方式膨胀的部分,以提供尖端与g圆形电极的第二机械互锁。 然后可以焊接点火尖以进一步加强其与接地电极的连接。 还公开了制造接地电极的方法和包含接地电极的火花塞。