公开(公告)号：US5298200A

公开(公告)日：1994-03-29

申请号：US76688

申请日：1993-06-15

申请人： Fuminobu Kubo ,  Hiroyuki Hino ,  Tsutomu Shibata

发明人： Fuminobu Kubo ,  Hiroyuki Hino ,  Tsutomu Shibata

IPC分类号： A61K6/06 ,  C04B35/16 ,  A61C5/10 ,  A61C13/00 ,  A61C13/083

CPC分类号： C04B35/16

摘要： A dental refractory model material comprises as powdery components 5 to 20% by weight of a soluble phosphate, 5 to 20% by weight of magnesium oxide and 10 to 50% by weight of at least one selected from the group of alumina, zirconia, fused quartz, mullite, spinel and cordierite with the balance being crystalline quartz and crystobalite. The refractory model material also includes a liquid component such as a colloidal silica dispersion.

摘要翻译： 牙科耐火模型材料包含粉末状组分5至20重量％的可溶性磷酸盐，5至20重量％的氧化镁和10至50重量％的至少一种选自氧化铝，氧化锆，稠合 石英，莫来石，尖晶石和堇青石，其余为结晶石英和方石英。 耐火模型材料还包括液体组分，例如胶体二氧化硅分散体。

公开(公告)号：US09093824B2

公开(公告)日：2015-07-28

申请号：US13993711

申请日：2011-09-06

申请人： Hoju Fukushima ,  Takamitsu Mizuno ,  Tsutomu Shibata ,  Toshitaka Honda

发明人： Hoju Fukushima ,  Takamitsu Mizuno ,  Tsutomu Shibata ,  Toshitaka Honda

IPC分类号： H01T13/20 ,  H01T13/40 ,  H01T13/41

CPC分类号： H01T13/40 ,  H01T13/41

摘要： A spark plug having a connecting portion that electrically connects a center electrode with a metal terminal within an axial bore in an insulator. The connecting portion of the spark plug includes a resistor. A center electrode-side resistance, which is the resistance of a portion of the resistor that extends from the center thereof toward the center electrode in the axial direction, is larger than a metal terminal-side resistance, which is the resistance of a portion of the resistor that extends from the center thereof toward the metal terminal.

摘要翻译： 一种火花塞，具有将中心电极与金属端子电连接在绝缘体的轴向孔内的连接部分。 火花塞的连接部分包括电阻器。 中心电极侧电阻是从其中心向中心电极沿轴向延伸的电阻的一部分的电阻大于金属端子侧电阻，其为金属端子侧电阻 电阻器从中心向金属端子延伸。

公开(公告)号：US08853928B2

公开(公告)日：2014-10-07

申请号：US13824058

申请日：2011-08-24

申请人： Tomo-o Tanaka ,  Tsutomu Shibata ,  Takaaki Kikai

发明人： Tomo-o Tanaka ,  Tsutomu Shibata ,  Takaaki Kikai

IPC分类号： H01T13/39 ,  C22C19/03 ,  C22C49/08 ,  H01T13/16 ,  H01T21/02 ,  C22C26/00 ,  C22C32/00 ,  C22C19/05

CPC分类号： H01T13/39 ,  C22C19/03 ,  C22C19/058 ,  C22C26/00 ,  C22C32/0084 ,  C22C49/08 ,  C22C2026/002 ,  H01T13/16 ,  H01T21/02

摘要： A spark plug includes at least one of a center electrode or a ground electrode that is produced by the steps of: mixing a matrix metal with carbon so that the carbon content of the resultant mixture is adjusted to 80 vol. % or less; subjecting the mixture to powder compacting or sintering, to thereby form a core; placing the core in a cup formed of nickel or a metal containing nickel as a main component; and subjecting the cup to cold working. The thus-produced electrode exhibits favorable thermal conductivity and good heat dissipation, by virtue of the small difference in thermal expansion coefficient between the core and an outer shell. The spark plug including the above electrode exhibits excellent durability.

摘要翻译： 火花塞包括通过以下步骤制造的中心电极或接地电极中的至少一个：将基质金属与碳混合，使得所得混合物的碳含量调节至80体积％。 ％ 或更少; 使混合物进行粉末压实或烧结，从而形成芯; 将芯放置在由镍或以镍为主要成分的金属形成的杯中; 并对杯子进行冷加工。 由于芯和外壳之间的热膨胀系数差小，所以这样制作的电极表现出良好的导热性和良好的散热性。 包括上述电极的火花塞具有优异的耐久性。

公开(公告)号：US08729783B2

公开(公告)日：2014-05-20

申请号：US13824205

申请日：2011-08-24

申请人： Tomo-o Tanaka ,  Tsutomu Shibata ,  Takaaki Kikai

发明人： Tomo-o Tanaka ,  Tsutomu Shibata ,  Takaaki Kikai

IPC分类号： H01T13/20

CPC分类号： H01T13/39 ,  C22C1/02 ,  C22C9/00 ,  C22C19/05 ,  C22C32/0021 ,  C22C32/0084 ,  C22C49/02 ,  C22C49/14 ,  H01T13/20 ,  H01T21/02

摘要： A spark plug is provided having at least one of a center electrode or a ground electrode. The electrode comprises: a core formed of a composite material containing a matrix metal, the matrix metal being copper or a metal containing copper as a main component, and carbon dispersed in the matrix metal in an amount of 10 to 80 vol. %, the carbon having a thermal conductivity higher than that of the matrix metal. The electrode also contains an outer shell which surrounds the core and which is formed of nickel or a metal containing nickel as a main component. The thus-produced electrode exhibits favorable thermal conductivity and good heat dissipation, by virtue of the small difference in thermal expansion coefficient between the core and an outer shell. The spark plug including the above electrode exhibits excellent durability.

摘要翻译： 提供具有中心电极或接地电极中的至少一个的火花塞。 电极包括：由包含基质金属，基质金属为铜或以铜为主要成分的金属的复合材料形成的芯和分散在基体金属中的碳，其量为10至80体积％。 ％，导热率高于基体金属的导热率。 电极还包含围绕芯的外壳，其由镍或以镍为主要成分的金属形成。 由于芯和外壳之间的热膨胀系数差小，所以这样制作的电极表现出良好的导热性和良好的散热性。 包括上述电极的火花塞具有优异的耐久性。

公开(公告)号：US08618725B2

公开(公告)日：2013-12-31

申请号：US13695721

申请日：2011-02-03

申请人： Daisuke Sumoyama ,  Tsutomu Shibata ,  Tomoo Tanaka

发明人： Daisuke Sumoyama ,  Tsutomu Shibata ,  Tomoo Tanaka

IPC分类号： H01T13/20

CPC分类号： H01T13/39 ,  C22C5/04 ,  H01T13/20 ,  H01T21/02

摘要： A spark plug includes a ceramic insulator, a center electrode, a metallic shell, and a ground electrode. The center electrode has a shoulder portion at a forward end portion, which tapers forward with respect to the axial direction. A noble metal tip is joined to the forward end portion of the center electrode through a fusion zone. A spark discharge gap is formed between the noble metal tip and the ground electrode. The shortest distance between the fusion zone and a forward end surface of the noble metal tip is 0.8-1.2 mm. The outside diameter of the fusion zone as measured at a forward end of the fusion zone is smaller than that as measured at a rear end of the fusion zone. An acute angle θ1 formed by a straight line L1 and a straight line L2 satisfies the relational expression θ1≦72°.

摘要翻译： 火花塞包括陶瓷绝缘体，中心电极，金属壳和接地电极。 中心电极在前端部具有相对于轴向向前变细的肩部。 贵金属端头通过熔接区域与中心电极的前端部接合。 在贵金属端头和接地电极之间形成火花放电间隙。 熔融区与贵金属端头的前端表面之间的最短距离为0.8-1.2mm。 在熔融区的前端处测量的熔融区的外径小于在熔融区的后端测量的外径。 由直线L1和直线L2形成的锐角θ1满足关系式θ1@ 72°。

公开(公告)号：US20130200774A1

公开(公告)日：2013-08-08

申请号：US13877352

申请日：2011-10-06

申请人： Takaaki Kikai ,  Tomoo Tanaka ,  Tsutomu Shibata ,  Kaori Suzuki ,  Takehito Kuno

发明人： Takaaki Kikai ,  Tomoo Tanaka ,  Tsutomu Shibata ,  Kaori Suzuki ,  Takehito Kuno

IPC分类号： H01T13/39 ,  H01T21/02

CPC分类号： H01T13/39 ,  H01T13/32 ,  H01T21/02

摘要： A spark plug includes a ceramic insulator having an axial hole formed in an axis direction of the spark plug, a center electrode inserted in a front side of the axial hole, a metal shell disposed around the ceramic insulator and a ground electrode joined to a front end portion of the metal shell, wherein the ground electrode has a cross-sectional area of 2.0 mm2 or smaller in any arbitrary cross section thereof taken in a direction perpendicular to a center line of the ground electrode; the ground electrode is made of a metal material containing 93 mass % or more of nickel; and the ground electrode has a Vickers hardness of 130 to 260 Hv.

摘要翻译： 火花塞包括陶瓷绝缘体，其具有形成在火花塞的轴线方向的轴向孔，插入在轴向孔的前侧的中心电极，设置在陶瓷绝缘体周围的金属壳和接合到前面的接地电极 所述金属壳的端部，其中所述接地电极在与所述接地电极的中心线垂直的方向上的任意截面中的截面面积为2.0mm 2以下; 接地电极由含有93质量％以上的镍的金属材料制成; 接地电极的维氏硬度为130〜260Hv。

公开(公告)号：US08492962B2

公开(公告)日：2013-07-23

申请号：US13140099

申请日：2009-12-24

申请人： Tsutomu Shibata ,  Keita Nakagawa

发明人： Tsutomu Shibata ,  Keita Nakagawa

IPC分类号： F02M57/06 ,  F02P13/00 ,  H01T13/00 ,  H01T13/20

CPC分类号： H01T13/34 ,  H01C7/003 ,  H01C17/0652 ,  H01C17/06533

摘要： Provided is a spark plug which allows a predetermined resistance to be imparted to a resistor with restraint of variation in resistance of the resistor and in turn, enables enhancement of yield. The spark plug includes a ceramic insulator having an axial hole extending in the direction of an axis CL1, a center electrode, and a terminal electrode. A resistor is provided in the axial hole through sintering of a resistor composition which contains a conductive material such as carbon black, glass powder, and ceramic particles other than glass. As viewed on a section of the resistor taken along a direction orthogonal to the axis CL1, 50% or more of sintered glass powder formed through sintering of the glass powder has a circularity of 0.8 or greater.

摘要翻译： 提供了一种火花塞，其允许在电阻器的电阻变化的限制下赋予电阻器预定的电阻，并且进而能够提高产量。 火花塞包括具有沿轴线CL1，中心电极和端子电极的方向延伸的轴向孔的陶瓷绝缘体。 通过烧结包含诸如炭黑，玻璃粉末和玻璃之外的陶瓷颗粒的导电材料的电阻组合物，在轴向孔中设置电阻器。 从沿着与CL1正交的方向截取的电阻部分观察，通过玻璃粉末的烧结而形成的烧结玻璃粉末的50％以上的圆形度为0.8以上。

公开(公告)号：US20130181596A1

公开(公告)日：2013-07-18

申请号：US13824058

申请日：2011-08-24

申请人： Tomo-o Tanaka ,  Tsutomu Shibata ,  Takaaki Kikai

发明人： Tomo-o Tanaka ,  Tsutomu Shibata ,  Takaaki Kikai

IPC分类号： H01T13/39 ,  H01T21/02

CPC分类号： H01T13/39 ,  C22C19/03 ,  C22C19/058 ,  C22C26/00 ,  C22C32/0084 ,  C22C49/08 ,  C22C2026/002 ,  H01T13/16 ,  H01T21/02

摘要： A spark plug includes at least one of a center electrode or a ground electrode that is produced by the steps of: mixing a matrix metal with carbon so that the carbon content of the resultant mixture is adjusted to 80 vol. % or less; subjecting the mixture to powder compacting or sintering, to thereby form a core; placing the core in a cup formed of nickel or a metal containing nickel as a main component; and subjecting the cup to cold working. The thus-produced electrode exhibits favorable thermal conductivity and good heat dissipation, by virtue of the small difference in thermal expansion coefficient between the core and an outer shell. The spark plug including the above electrode exhibits excellent durability.

摘要翻译： 火花塞包括通过以下步骤制造的中心电极或接地电极中的至少一个：将基质金属与碳混合，使得所得混合物的碳含量调节至80体积％。 ％ 或更少; 使混合物进行粉末压实或烧结，从而形成芯; 将芯放置在由镍或以镍为主要成分的金属形成的杯中; 并对杯子进行冷加工。 由于芯和外壳之间的热膨胀系数差小，所以这样制作的电极表现出良好的导热性和良好的散热性。 包括上述电极的火花塞具有优异的耐久性。

公开(公告)号：US20120013241A1

公开(公告)日：2012-01-19

申请号：US13259219

申请日：2010-10-15

申请人： Tsutomu Shibata ,  Takehito Kuno ,  Tomoo Tanaka ,  Kenji Nunome ,  Shoichiro Nagatomo

发明人： Tsutomu Shibata ,  Takehito Kuno ,  Tomoo Tanaka ,  Kenji Nunome ,  Shoichiro Nagatomo

IPC分类号： H01T13/39

CPC分类号： H01T13/39 ,  C22C19/058

摘要： The object of the invention is to provide a spark plug including a central electrode and/or a ground electrode, which can suppress generation of corrosion-like generated foreign substances while maintaining high thermal conductivity and high strength.The spark plug according to the invention is a spark plug including a central electrode and a ground electrode provided to have a gap between the central electrode and the ground electrode with at least one of the central electrode and the ground electrode formed from an electrode material including 96% by mass or more of Ni, in which the electrode material includes a total content of from 0.05% by mass to 0.45% by mass of at least one selected from a group consisting of Y and rare earth elements, 0.05% by mass or more of Mn, and a total content of 0.01% by mass or more of at least one selected from a group consisting of Ti, V, and Nb, and the ratio (a/b) of the total content (a) of Ti, V, and Nb to the content (b) of Mn is from 0.02 to 0.40.

摘要翻译： 本发明的目的是提供一种包括中心电极和/或接地电极的火花塞，其能够在保持高导热性和高强度的同时抑制腐蚀状产生的异物的产生。 根据本发明的火花塞是火花塞，其包括中心电极和接地电极，设置成在中心电极和接地电极之间具有间隙，中心电极和接地电极中的至少一个由电极材料形成，包括 96质量％以上的Ni，其中电极材料的总含量为0.05质量％至0.45质量％的选自Y和稀土元素中的至少一种，0.05质量％或 更多的Mn，以及选自Ti，V和Nb中的至少一种的0.01质量％以上的总含量，Ti的总含量（a）的比（a / b） V和Nb相对于Mn的含量（b）为0.02〜0.40。

公开(公告)号：US07388323B2

公开(公告)日：2008-06-17

申请号：US11246632

申请日：2005-10-11

申请人： Tsutomu Shibata ,  Hiroyuki Tanabe

发明人： Tsutomu Shibata ,  Hiroyuki Tanabe

IPC分类号： H01T13/20

CPC分类号： H01T13/41 ,  H01T13/34

摘要： A spark plug including: an insulator having a through hole extending in an axial direction, the through hole including, a first portion and a second portion provided on a rear end side of the first portion, the second portion having a larger diameter than that of the first portion; a center electrode provided in the first portion; an external terminal provided in the second portion; and a sintered ceramic resistor provided in the second portion. The sintered ceramic resistor is formed from a sintered body of a conductive ceramic, connecting the center electrode and the external terminal electrically, and having a length in an axial direction of 40% or more of a length in an axial direction of the second portion of the through hole.

摘要翻译： 一种火花塞，包括：具有沿轴向延伸的通孔的绝缘体，所述通孔包括设置在所述第一部分的后端侧的第一部分和第二部分，所述第二部分具有比所述第二部分更大的直径 第一部分; 设置在所述第一部分中的中心电极; 设置在所述第二部分中的外部端子; 以及设置在第二部分中的烧结陶瓷电阻器。 烧结陶瓷电阻器由导电陶瓷的烧结体形成，将中心电极和外部端子电连接，并且在轴向方向上的长度在第二部分的轴向长度的40％以上 通孔。