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1. 发明申请

US20060170320A1 Spark plug for internal combustion engine 有权
标题翻译：内燃机火花塞
公开(公告)号：US20060170320A1
公开(公告)日：2006-08-03
申请号：US11341623
申请日：2006-01-30
申请人： Kenichi Kumagai , Teruyuki Kondo , Kozo Amano , Kazuo Yamazaki , Yoshihiro Nakai , Masatada Numano
发明人： Kenichi Kumagai , Teruyuki Kondo , Kozo Amano , Kazuo Yamazaki , Yoshihiro Nakai , Masatada Numano
IPC分类号： H01T13/20
CPC分类号： H01T13/39
摘要： A spark plug comprising: a cylindrical metal shell; a cylindrical insulator provided in an inner hole of said metal shell; a center electrode provided in a leading end side inner hole of said insulator; and a ground electrode having one end bonded to a leading end side of said metal shell and having another end face forming a spark discharge gap with said center electrode, wherein said ground electrode comprises an electrode material containing from 0.5 to 1.5 wt. % of Si, from 0.5 to 1.5 wt. % of Al, from 0.02 to 1.0 wt. % of at least one of Ti, V, Zr, Nb and Hf, from 0.03 to 0.09 wt. % of C and 95.5 wt. % or more of Ni, and having a specific resistance at 20° C. of 25 μΩcm or less.
摘要翻译：一种火花塞，包括：圆柱形金属壳; 设置在所述金属壳的内孔中的圆柱形绝缘体; 中心电极，设置在所述绝缘体的前端侧内孔中; 以及接地电极，其一端接合到所述金属壳的前端侧，并且具有与所述中心电极形成火花放电间隙的另一端面，其中所述接地电极包括含有0.5至1.5wt。％的Si，0.5〜1.5wt。 Al的百分比为0.02〜1.0重量％ Ti，V，Zr，Nb和Hf中的至少一种的0.03％，0.03〜0.09wt。％的C和95.5wt。 Ni以上，并且在20℃下具有25微克或更小的电阻率。

2. 发明授权

US08288928B2 Spark plug for internal combustion engine 有权
标题翻译：内燃机火花塞
公开(公告)号：US08288928B2
公开(公告)日：2012-10-16
申请号：US12889294
申请日：2010-09-23
申请人： Kenichi Kumagai , Teruyuki Kondo , Kozo Amano , Kazuo Yamazaki , Yoshihiro Nakai , Masatada Numano
发明人： Kenichi Kumagai , Teruyuki Kondo , Kozo Amano , Kazuo Yamazaki , Yoshihiro Nakai , Masatada Numano
IPC分类号： H01T13/30
CPC分类号： H01T13/39
摘要： A spark plug comprising: a cylindrical metal shell; a cylindrical insulator provided in an inner hole of said metal shell; a center electrode provided in a leading end side inner hole of said insulator; and a ground electrode having one end bonded to a leading end side of said metal shell and having another end face forming a spark discharge gap with said center electrode, wherein said ground electrode comprises an electrode material containing from 0.5 to 1.5 wt. % of Si, from 0.5 to 1.5 wt. % of Al, from 0.02 to 1.0 wt. % of at least one of Ti, V, Zr, Nb and Hf, from 0.03 to 0.09 wt. % of C and 95.5 wt. % or more of Ni, and having a specific resistance at 20° C. of 25 tincm or less.
摘要翻译：一种火花塞，包括：圆柱形金属壳; 设置在所述金属壳的内孔中的圆柱形绝缘体; 中心电极，设置在所述绝缘体的前端侧内孔中; 以及接地电极，其一端接合到所述金属壳的前端侧，并且具有与所述中心电极形成火花放电间隙的另一端面，其中所述接地电极包括含有0.5至1.5wt。％的Si，0.5〜1.5wt。 Al的百分比为0.02〜1.0重量％ Ti，V，Zr，Nb和Hf中的至少一种的0.03％，0.03〜0.09wt。％的C和95.5wt。％以上的Ni，在20℃下的电阻率为25tincm以下。

3. 发明授权

US07825571B2 Spark plug for internal combustion engine 有权
标题翻译：内燃机火花塞
公开(公告)号：US07825571B2
公开(公告)日：2010-11-02
申请号：US11341623
申请日：2006-01-30
申请人： Kenichi Kumagai , Teruyuki Kondo , Kozo Amano , Kazuo Yamazaki , Yoshihiro Nakai , Masatada Numano
发明人： Kenichi Kumagai , Teruyuki Kondo , Kozo Amano , Kazuo Yamazaki , Yoshihiro Nakai , Masatada Numano
IPC分类号： H01T13/39
CPC分类号： H01T13/39
摘要： A spark plug comprising: a cylindrical metal shell; a cylindrical insulator provided in an inner hole of said metal shell; a center electrode provided in a leading end side inner hole of said insulator; and a ground electrode having one end bonded to a leading end side of said metal shell and having another end face forming a spark discharge gap with said center electrode, wherein said ground electrode comprises an electrode material containing from 0.5 to 1.5 wt. % of Si, from 0.5 to 1.5 wt. % of Al, from 0.02 to 1.0 wt. % of at least one of Ti, V, Zr, Nb and Hf, from 0.03 to 0.09 wt. % of C and 95.5 wt. % or more of Ni, and having a specific resistance at 20° C. of 25 μΩcm or less.
摘要翻译：一种火花塞，包括：圆柱形金属壳; 设置在所述金属壳的内孔中的圆柱形绝缘体; 中心电极，设置在所述绝缘体的前端侧内孔中; 以及接地电极，其一端接合到所述金属壳的前端侧，并且具有与所述中心电极形成火花放电间隙的另一端面，其中所述接地电极包括含有0.5至1.5wt。％的Si，0.5〜1.5wt。 Al的百分比为0.02〜1.0重量％ Ti，V，Zr，Nb和Hf中的至少一种的0.03％，0.03〜0.09wt。％的C和95.5wt。％以上的Ni，在20℃下的电阻率为25μΩ·cm以上。

4. 发明授权

US4911883A Cold working stainless steel 失效
标题翻译：冷加工不锈钢
公开(公告)号：US4911883A
公开(公告)日：1990-03-27
申请号：US216530
申请日：1988-07-08
申请人： Kenichi Kumagai , Yoshinobu Honkura , Toru Matsuo , Kouji Murata
发明人： Kenichi Kumagai , Yoshinobu Honkura , Toru Matsuo , Kouji Murata
IPC分类号： C22C38/00 , C22C38/42 , C22C38/58
CPC分类号： C22C38/42 , C22C38/58
摘要： Stainless steels possessing a superior cold workability and hot workability, which are yet economical. The stainless steels comprise not more than 0.04% carbon, not more than 0.60% silicon, 2.2-3.8% manganese, 2.5-4.0% copper, 6-8% nickel, 17-19% chromium, and the remainder being iron together with impurities. And, not more than 0.002% sulfur is decreased to provide stainless steels which possess superior corrosion resistance, and not more than 0.010% nitrogen are decreased in the stainless steels as required.
摘要翻译：具有优异的冷加工性和热加工性的不锈钢经济。不锈钢包括不超过0.04％的碳，不超过0.60％的硅，2.2-3.8％的锰，2.5-4.0％的铜，6-8％的镍，17-19％的铬，其余的是铁和杂质。并且，不降低0.002％的硫以提供具有优异的耐腐蚀性的不锈钢，并且根据需要在不锈钢中不超过0.010％的氮。

5. 发明授权

US06603244B2 Spark plug and method of producing spark plug 有权
公开(公告)号：US06603244B2
公开(公告)日：2003-08-05
申请号：US10082068
申请日：2002-02-26
申请人： Yoshihisa Sugiyama , Tomoharu Suzuki , Kenichi Kumagai
发明人： Yoshihisa Sugiyama , Tomoharu Suzuki , Kenichi Kumagai
IPC分类号： F02M5706
CPC分类号： H01T21/02 , H01T13/39
摘要： A spark plug includes: a central electrode; an insulator surrounding the central electrode radially; a metallic shell surrounding the insulator radially; and a ground electrode having a first end connected to the metallic shell and a second end defining a side face. The ground electrode is so bent that the side face of the second end faces the central electrode. The ground electrode contains: a nickel in a range from 58% to 71% by weight, a chromium in a range from 21% to 25% by weight, an iron in a range from 7% to 20% by weight, and an aluminum in a range from 1% to 2% by weight. The ground electrode has a Vickers hardness in a range from Hv 140 to Hv 220 through a Vickers hardness test specified in Japanese Industrial Standard Z2244. A load 9.8 N is applied to the ground electrode in the hardness test.

6. 发明申请

US20080278053A1 Spark Plug 有权
标题翻译：火花塞
公开(公告)号：US20080278053A1
公开(公告)日：2008-11-13
申请号：US10571690
申请日：2005-01-27
申请人： Kenichi Kumagai , Wataru Matsutani , Kenji Kobayashi
发明人： Kenichi Kumagai , Wataru Matsutani , Kenji Kobayashi
IPC分类号： H01T13/20
CPC分类号： C22C19/056 , H01T13/39
摘要： To provide a spark plug in which separation of a tip can be prevented and enough wear resistance can be obtained without increasing the content of nickel in the tip portion, and a use method of the spark plug.In a spark plug (100) including an outside electrode (10) including an electrode body portion (11) and a tip (12) bonded to the electrode body portion (11), and a center electrode (20), and the tip (12) is opposed to the front end portion of the center electrode (20) through a spark discharge gap (G), the electrode body portion (11) is made of a nickel alloy containing 13 to 18% by mass of Cr, 0.03 to 0.08% by mass of C, 1 to 3.5% by mass of Mo, 0 to 0.8% by mass of Si, Al, Mn and Ti, and 68% by mass or more of Ni, and the tip (12) is made of a platinum alloy containing 0 to 4% by mass of Ni.
摘要翻译：为了提供火花塞，其中可以防止尖端的分离，并且可以获得足够的耐磨性而不增加尖端部分中的镍含量，以及火花塞的使用方法。在包括外部电极（10）的火花塞（100）中，包括电极主体部分（11）和接合到电极体部分（11）的端部（12），以及中心电极（20）和尖端 12）通过火花放电间隙（G）与中心电极（20）的前端部相对，电极体部（11）由含有13〜18质量％的Cr，0.03〜 0.08质量％的C，1〜3.5质量％的Mo，0〜0.8质量％的Si，Al，Mn和Ti，以及68质量％以上的Ni，前端（12）由含有0〜4质量％的Ni的铂合金。

7. 发明授权

US07804232B2 Spark plug with high durability 有权
标题翻译：火花塞具有高耐久性
公开(公告)号：US07804232B2
公开(公告)日：2010-09-28
申请号：US10571690
申请日：2005-01-27
申请人： Kenichi Kumagai , Wataru Matsutani , Kenji Kobayashi
发明人： Kenichi Kumagai , Wataru Matsutani , Kenji Kobayashi
IPC分类号： F02M57/06 , F02P13/00 , H01T13/20
CPC分类号： C22C19/056 , H01T13/39
摘要： To provide a spark plug in which separation of a tip can be prevented and enough wear resistance can be obtained without increasing the content of nickel in the tip portion, and a use method of the spark plug.In a spark plug (100) including an outside electrode (10) including an electrode body portion (11) and a tip (12) bonded to the electrode body portion (11), and a center electrode (20), and the tip (12) is opposed to the front end portion of the center electrode (20) through a spark discharge gap (G), the electrode body portion (11) is made of a nickel alloy containing 13 to 18% by mass of Cr, 0.03 to 0.08% by mass of C, 1 to 3.5% by mass of Mo, 0 to 0.8% by mass of Si, Al, Mn and Ti, and 68% by mass or more of Ni, and the tip (12) is made of a platinum alloy containing 0 to 4% by mass of Ni.
摘要翻译：为了提供火花塞，其中可以防止尖端的分离，并且可以获得足够的耐磨性而不增加尖端部分中的镍含量，以及火花塞的使用方法。在包括外部电极（10）的火花塞（100）中，包括电极主体部分（11）和接合到电极体部分（11）的端部（12），以及中心电极（20）和尖端 12）通过火花放电间隙（G）与中心电极（20）的前端部相对，电极体部（11）由含有13〜18质量％的Cr，0.03〜 0.08质量％的C，1〜3.5质量％的Mo，0〜0.8质量％的Si，Al，Mn和Ti，以及68质量％以上的Ni，前端（12）由含有0〜4质量％的Ni的铂合金。

8. 发明授权

US07741763B2 Spark plug 有权
标题翻译：火花塞
公开(公告)号：US07741763B2
公开(公告)日：2010-06-22
申请号：US11846162
申请日：2007-08-28
申请人： Kenichi Kumagai , Koji Mizoguchi
发明人： Kenichi Kumagai , Koji Mizoguchi
IPC分类号： H01T1/00
CPC分类号： H01T13/36
摘要： A spark plug including a center electrode; an insulator; a metal shell; a ground electrode; and an annular packing, all as defined herein, wherein the packing has a hardness greater than or equal to a hardness of the stepped portion of the metal shell or has a Vickers hardness of not less than 300 Hv. Preferably, a difference between the hardness of the packing and the hardness of the stepped portion of the metal shell is from 120 Hv to 160 Hv, and the packing has a Vickers hardness of not more than 500 Hv.
摘要翻译：一种包括中心电极的火花塞; 绝缘体金属壳; 接地电极; 以及全部如本文所定义的环形填料，其中填料的硬度大于或等于金属壳的阶梯部分的硬度，或维氏硬度不低于300Hv。优选地，包装的硬度与金属壳的台阶部分的硬度之间的差为120Hv至160Hv，并且包装的维氏硬度不大于500Hv。

9. 发明授权

US06759795B2 Spark plug 失效
标题翻译：火花塞
公开(公告)号：US06759795B2
公开(公告)日：2004-07-06
申请号：US10372800
申请日：2003-02-26
申请人： Kenichi Kumagai , Makoto Yamaguchi , Hiroaki Kuki
发明人： Kenichi Kumagai , Makoto Yamaguchi , Hiroaki Kuki
IPC分类号： H01T1320
CPC分类号： H01T13/39 , H01T13/32
摘要： A spark plug having a tubular metallic shell (1), an insulator (2) fitted into the metallic shell (1), a center electrode (3) provided in the insulator (2), and a ground electrode (4), one end of the ground electrode (4) being joined to the metallic shell (1) by means of welding or a like process, and a spark discharge gap (g) being formed between the other end portion of the ground electrode (4) and the center electrode (3), the spark plug being further characterized in that: the ground electrode (4) has an electrode base metal (4a), a Cu-based heat transfer acceleration element (4c) embedded in the electrode base metal (4a) and formed predominantly from Cu, and a noble metal chip (32) welded to the electrode base metal (4a) at a position facing the spark discharge gap (g); and the electrode base metal (4a) is an Ni alloy containing Cr in an amount of 14%-17% by mass, Mo in an amount of 0.8%-3.5% by mass, and Ni in an amount of 68%-85.2% by mass. In a second embodiment, the ground electrode (4) has a diffusion layer formed in a boundary between the electrode base metal (4a) and the Cu-based heat transfer acceleration element (4c), and the electrode base metal (4a) contains C in an amount not greater than 0.3% by mass.
摘要翻译：一种火花塞，其具有管状金属壳（1），安装在金属壳（1）中的绝缘体（2），设置在绝缘体（2）中的中心电极（3）和接地电极（4），一端的接地电极（4）通过焊接或类似工艺接合到金属壳（1），并且在接地电极（4）的另一端部和中心部之间形成火花放电间隙（g）电极（3），其特征在于，所述接地电极（4）具有电极基体金属（4a），嵌入所述电极基体金属（4a）中的Cu系传热加速元件（4c）主要由Cu形成，以及在面向火花放电间隙（g）的位置处焊接到电极母材（4a）的贵金属芯片（32）。电极母材（4a）为含有14质量％〜17质量％的Cr，0.8〜3.5质量％的Mo，68％〜85.2质量％的Ni的Ni合金，的质量。在第二实施例中，接地电极（4）具有形成在电极基体金属（4a）和Cu系传热加速元件（4c）之间的边界的扩散层，电极基体金属（4a）含有C 的量不大于0.3质量％。

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