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1. 发明授权

US07781949B2 Spark plug 有权
标题翻译：火花塞
公开(公告)号：US07781949B2
公开(公告)日：2010-08-24
申请号：US11941304
申请日：2007-11-16
申请人： Kaori Kishimoto , Katsutoshi Nakayama , Hiroyuki Kameda , Yasushi Sakakura
发明人： Kaori Kishimoto , Katsutoshi Nakayama , Hiroyuki Kameda , Yasushi Sakakura
IPC分类号： H01T13/20
CPC分类号： H01T13/32
摘要： A spark plug including a ground electrode which has an excellent heat sinking ability. The ground electrode includes a core material therein. Heat received from a combustion chamber during a drive of an internal-combustion engine can be conducted to the core material. More effective heat sinking ability can be achieved because of the core material.
摘要翻译：一种火花塞，其包括具有优异的散热能力的接地电极。接地电极在其中包括芯材料。在内燃机的驱动期间从燃烧室接收的热量可以传导到芯材。由于芯材料可以实现更有效的散热能力。

2. 发明申请

US20080122334A1 SPARK PLUG 有权
标题翻译： SPARK插头
公开(公告)号：US20080122334A1
公开(公告)日：2008-05-29
申请号：US11941304
申请日：2007-11-16
申请人： Kaori Kishimoto , Katsutoshi Nakayama , Hiroyuki Kameda , Yasushi Sakakura
发明人： Kaori Kishimoto , Katsutoshi Nakayama , Hiroyuki Kameda , Yasushi Sakakura
IPC分类号： H01T13/32
CPC分类号： H01T13/32
摘要： A spark plug including a ground electrode which has an excellent heat sinking ability. The ground electrode includes a core material therein. Heat received from a combustion chamber during a drive of an internal-combustion engine can be conducted to the core material. More effective heat sinking ability can be achieved because of the core material.
摘要翻译：一种火花塞，其包括具有优异的散热能力的接地电极。接地电极在其中包括芯材料。在内燃机的驱动期间从燃烧室接收的热量可以传导到芯材。由于芯材料可以实现更有效的散热能力。

3. 发明授权

US08640666B2 Spark plug for internal combustion engine 有权
标题翻译：内燃机火花塞
公开(公告)号：US08640666B2
公开(公告)日：2014-02-04
申请号：US12810652
申请日：2008-12-25
申请人： Hiroyuki Kameda , Katsutoshi Nakayama , Kaori Kishimoto , Tomoaki Kato
发明人： Hiroyuki Kameda , Katsutoshi Nakayama , Kaori Kishimoto , Tomoaki Kato
IPC分类号： H01T13/20 , H01T13/39
CPC分类号： H01T13/16 , H01T13/32
摘要： A spark plug includes a center electrode extending along an axial line, a ground electrode, and a noble metal tip. A center axis of the noble metal tip is displaced from a center axis of the ground electrode toward a base-end side in the axial line. The ground electrode includes an outer layer and an inner layer, and a distal end of the inner layer is closer to the axial line than a base end of the ground electrode. An overlap area between the inner layer and the noble metal tip occupies a ratio of 25% or more in a projective plane defined by projecting, along the center axis, a plane of the ground electrode viewed from a distal-end face on a cross section of the ground electrode in which a maximum cross-sectional area of the inner layer is achieved, among cross sections orthogonal to the center axis.
摘要翻译：火花塞包括沿轴线延伸的中心电极，接地电极和贵金属电极头。贵金属电极头的中心轴线从接地电极的中心轴线向轴线的基端侧位移。接地电极包括外层和内层，并且内层的远端比接地电极的基端更靠近轴线。在内层和贵金属电极头之间的重叠区域占据了投影平面中的25％以上的比例，该突出面是沿着中心轴突出从截面的前端面观察的接地电极的平面在与中心轴线正交的截面中实现内层最大截面面积的接地电极。

4. 发明申请

US20100275870A1 SPARK PLUG FOR INTERNAL COMBUSTION ENGINE 有权
标题翻译：火花塞用于内燃机
公开(公告)号：US20100275870A1
公开(公告)日：2010-11-04
申请号：US12810652
申请日：2008-12-25
申请人： Hiroyuki Kameda , Katsutoshi Nakayama , Kaori Kishimoto , Tomoaki Kato
发明人： Hiroyuki Kameda , Katsutoshi Nakayama , Kaori Kishimoto , Tomoaki Kato
IPC分类号： H01T13/20
CPC分类号： H01T13/16 , H01T13/32
摘要： A spark plug includes a center electrode extending along an axial line, a ground electrode, and a noble metal tip. A center axis of the noble metal tip is displaced from a center axis of the ground electrode toward a base-end side in the axial line. The ground electrode includes an outer layer and an inner layer, and a distal end of the inner layer is closer to the axial line than a base end of the ground electrode. An overlap area between the inner layer and the noble metal tip occupies a ratio of 25% or more in a projective plane defined by projecting, along the center axis, a plane of the ground electrode viewed from a distal-end face on a cross section of the ground electrode in which a maximum cross-sectional area of the inner layer is achieved, among cross sections orthogonal to the center axis.
摘要翻译：火花塞包括沿轴线延伸的中心电极，接地电极和贵金属电极头。贵金属电极头的中心轴线从接地电极的中心轴线向轴线的基端侧位移。接地电极包括外层和内层，并且内层的远端比接地电极的基端更靠近轴线。在内层和贵金属电极头之间的重叠区域占据了投影平面中的25％以上的比例，该突出面沿着中心轴突出从横截面的远端面观察的接地电极的平面在与中心轴线正交的截面中实现内层最大截面面积的接地电极。

5. 发明授权

US09016253B2 Spark plug for internal combustion engine 有权
标题翻译：内燃机火花塞
公开(公告)号：US09016253B2
公开(公告)日：2015-04-28
申请号：US12668858
申请日：2008-05-29
申请人： Kaori Kishimoto , Katsutoshi Nakayama , Hiroyuki Kameda , Tomoaki Aoki
发明人： Kaori Kishimoto , Katsutoshi Nakayama , Hiroyuki Kameda , Tomoaki Aoki
IPC分类号： H01T13/34
CPC分类号： H01T13/34
摘要： There is provided a spark plug for an internal combustion engine, including: a center electrode extending in the direction of an axis of the spark plug and having a core of higher thermal expansion coefficient than that of a front end thereof, the center electrode including a flanged portion radially outwardly protruding on a rear side thereof and a cylindrical portion located closer to a front end of the spark plug than the flanged portion and being smaller in diameter than the flanged portion; an insulator having an axial hole in the direction of the axis to retain the flanged portion in the axial hole with the cylindrical portion held in a loose-fit state in the axial hole; and a metal shell accommodating the insulator, wherein the spark plug satisfies the following condition: Cb
摘要翻译：提供了一种用于内燃机的火花塞，包括：中心电极，其在火花塞的轴线方向上延伸并且具有比其前端高的热膨胀系数的芯，所述中心电极包括一个在其后侧径向向外突出的凸缘部分和与凸缘部分相比更靠近火花塞前端的圆柱形部分，并且直径比法兰部分小; 绝缘体，其在所述轴线方向上具有轴向孔，以将所述凸缘部保持在所述轴向孔中，所述圆筒部在所述轴向孔中保持松配合状态; 以及容纳绝缘体的金属壳，其中，所述火花塞满足以下条件：Cb

6. 发明申请

US20100206256A1 SPARK PLUG FOR INTERNAL COMBUSTION ENGINE 有权
标题翻译：火花塞用于内燃机
公开(公告)号：US20100206256A1
公开(公告)日：2010-08-19
申请号：US12668858
申请日：2008-05-29
申请人： Kaori Kishimoto , Katsutoshi Nakayama , Hiroyuki Kameda
发明人： Kaori Kishimoto , Katsutoshi Nakayama , Hiroyuki Kameda
IPC分类号： H01T13/20 , H01T13/02
CPC分类号： H01T13/34
摘要： There is provided a spark plug for an internal combustion engine, including: a center electrode extending in the direction of an axis of the spark plug and having a core of higher thermal expansion coefficient than that of a front end thereof, the center electrode including a flanged portion radially outwardly protruding on a rear side thereof and a cylindrical portion located closer to a front end of the spark plug than the flanged portion and being smaller in diameter than the flanged portion; an insulator having an axial hole in the direction of the axis to retain the flanged portion in the axial hole with the cylindrical portion held in a loose-fit state in the axial hole; and a metal shell accommodating the insulator, wherein the spark plug satisfies the following condition: Cb
摘要翻译：提供了一种用于内燃机的火花塞，包括：中心电极，其在火花塞的轴线方向上延伸并且具有比其前端高的热膨胀系数的芯，所述中心电极包括一个在其后侧径向向外突出的凸缘部分和与凸缘部分相比更靠近火花塞前端的圆柱形部分，并且直径比法兰部分小; 绝缘体，其在所述轴线方向上具有轴向孔，以将所述凸缘部保持在所述轴向孔中，所述圆筒部在所述轴向孔中保持松配合状态; 以及容纳绝缘体的金属壳，其中，所述火花塞满足以下条件：Cb

7. 发明申请

US20120038263A1 SPARK PLUG 有权
标题翻译： SPARK插头
公开(公告)号：US20120038263A1
公开(公告)日：2012-02-16
申请号：US13266544
申请日：2010-04-30
申请人： Kohei Katsuraya , Hiroyuki Kameda , Katsutoshi Nakayama
发明人： Kohei Katsuraya , Hiroyuki Kameda , Katsutoshi Nakayama
IPC分类号： H01T13/00
CPC分类号： H01T13/20 , H01T13/32
摘要： A spark plug includes a center electrode extending in an axial direction; an insulator formed externally of the outer circumference of the center electrode; a metallic shell formed externally of the outer circumference of the insulator and having a ledge which supports the insulator; and a ground electrode joined to the metallic shell. The insulator has a support portion which faces the ledge. A “frontward direction” is defined as the direction parallel to the axial direction toward a spark portion formed between the center electrode and the ground electrode. The insulator has a diameter reduction portion whose outside diameter reduces along the frontward direction from the support portion, and a diameter increase portion whose outside diameter increases along the frontward direction from the front end of the diameter reduction portion. This restrains the generation of leak current while maintaining heat resistance of the spark plug.
摘要翻译：火花塞包括沿轴向延伸的中心电极; 绝缘体，形成在中心电极的外周的外侧; 金属外壳，形成在绝缘体的外周的外部，并具有支撑绝缘体的凸缘; 和与金属壳接合的接地电极。绝缘体具有面向突出部的支撑部。 “向前方向”被定义为朝向形成在中心电极和接地电极之间的火花部分的轴向平行的方向。该绝缘体具有直径减小部分，该直径减小部分的外径沿着从支撑部分的向前方向减小，并且其直径从直径减小部分的前端沿着向前方向增加的直径增大部分。这样可以在保持火花塞的耐热性的同时抑制泄漏电流的产生。

8. 发明授权

US08013504B2 Spark plug for internal combustion engine and method for producing the spark plug 有权
标题翻译：用于内燃机的火花塞和产生火花塞的方法
公开(公告)号：US08013504B2
公开(公告)日：2011-09-06
申请号：US12274828
申请日：2008-11-20
申请人： Hiroyuki Kameda , Katsutoshi Nakayama , Satoshi Nagasawa
发明人： Hiroyuki Kameda , Katsutoshi Nakayama , Satoshi Nagasawa
IPC分类号： H01T13/20
CPC分类号： H01T21/02 , H01T13/32
摘要： A spark plug including: a center electrode; a substantially cylindrical insulator; a cylindrical metal shell; a ground electrode having a base end joined to a leading end portion of the metal shell and a distal end bent toward the axis line. The ground electrode includes: a thick portion provided on a base end side, a thin portion provided on a distal end side, and a stepped portion provided on an inner peripheral surface between the thick portion and the thin portion. A noble metal tip is joined to and partially embedded in the inner peripheral surface of the thin portion and disposed to form a gap between the noble metal tip and the leading end portion of the center electrode.
摘要翻译：一种火花塞，包括：中心电极; 一个基本上圆柱形的绝缘体; 圆柱形金属外壳; 接地电极，其具有接合到所述金属壳的前端部的基端和朝向所述轴线弯曲的远端。接地电极包括：设置在基端侧的厚壁部，设置在前端侧的薄壁部和设置在厚壁部与薄壁部之间的内周面的台阶部。贵金属端头接合并部分地嵌入薄壁的内周面，并且设置成在贵金属端头和中心电极的前端部之间形成间隙。

9. 发明授权

US08629605B2 Spark plug having shaped insulator 有权
标题翻译：具有成型绝缘体的火花塞
公开(公告)号：US08629605B2
公开(公告)日：2014-01-14
申请号：US13266544
申请日：2010-04-30
申请人： Kohei Katsuraya , Hiroyuki Kameda , Katsutoshi Nakayama
发明人： Kohei Katsuraya , Hiroyuki Kameda , Katsutoshi Nakayama
IPC分类号： H01T13/20 , H01T13/14
CPC分类号： H01T13/20 , H01T13/32
摘要： A spark plug includes a center electrode extending in an axial direction; an insulator formed externally of the outer circumference of the center electrode; a metallic shell formed externally of the outer circumference of the insulator and having a ledge which supports the insulator; and a ground electrode joined to the metallic shell. The insulator has a support portion which faces the ledge. A “frontward direction” is defined as the direction parallel to the axial direction toward a spark portion formed between the center electrode and the ground electrode. The insulator has a diameter reduction portion whose outside diameter reduces along the frontward direction from the support portion, and a diameter increase portion whose outside diameter increases along the frontward direction from the front end of the diameter reduction portion. This restrains the generation of leak current while maintaining heat resistance of the spark plug.
摘要翻译：火花塞包括沿轴向延伸的中心电极; 绝缘体，形成在中心电极的外周的外侧; 金属外壳，形成在绝缘体的外周的外部，并具有支撑绝缘体的凸缘; 和与金属壳接合的接地电极。绝缘体具有面向突出部的支撑部。 “向前方向”被定义为朝向形成在中心电极和接地电极之间的火花部分的轴向平行的方向。该绝缘体具有直径减小部分，该直径减小部分的外径沿着从支撑部分的向前方向减小，并且其直径从直径减小部分的前端沿着向前方向增加的直径增大部分。这样可以在保持火花塞的耐热性的同时抑制泄漏电流的产生。

10. 发明授权

US07906894B2 Spark plug for internal combustion engine 有权
标题翻译：内燃机火花塞
公开(公告)号：US07906894B2
公开(公告)日：2011-03-15
申请号：US12336807
申请日：2008-12-17
申请人： Hiroyuki Kameda , Tomoaki Kato , Katsutoshi Nakayama
发明人： Hiroyuki Kameda , Tomoaki Kato , Katsutoshi Nakayama
IPC分类号： H01T13/20
CPC分类号： H01T13/32
摘要： A spark plug includes a ground electrode formed with a flat region and a convex curved region on an outer peripheral surface thereof. The flat region is located on a front end of the ground electrode and has a length of 0.2 mm or more from a front end face of the ground electrode in a longitudinal direction of the ground electrode. The ground electrode satisfies the following dimensional condition (1) with respect to first and second cross sections of the ground electrode taken through the convex curved region and the flat region in directions perpendicular to the longitudinal direction of the ground electrode, 0.950≦(S2/L2)/(S1/L1)≦0.995 (1) where S1 is the area of the first cross section; L1 is the perimeter of the first cross section; S2 is the area of the second cross section; and L2 is the perimeter of the second cross section.
摘要翻译：火花塞包括在其外周面上形成有平坦区域和凸曲面区域的接地电极。平坦区域位于接地电极的前端，并且距离接地电极的前端面在接地电极的长度方向上具有0.2mm以上的长度。接地电极相对于通过凸曲面区域接地的电极的第一和第二截面以及与接地电极的纵向垂直的方向的平坦区域满足以下尺寸条件（1）：0.950＆nlE;（S2 /L2)/(S1/L1)≦̸0.995（1）其中S1是第一个横截面的面积; L1是第一横截面的周长; S2是第二横截面的面积; L2是第二横截面的周长。

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