公开(公告)号：US07132782B2

公开(公告)日：2006-11-07

申请号：US09893488

申请日：2001-06-29

申请人： Tomoaki Kato ,  Mamoru Musasa

发明人： Tomoaki Kato ,  Mamoru Musasa

IPC分类号： H01T13/02

CPC分类号： H01T21/02 ,  H01T13/39

摘要： A spark plug includes a center electrode, a ground electrode opposing the center electrode in such a manner as to define a spark discharge gap between the center electrode and the ground electrode, and an igniter fixed to at least one of the center electrode and the ground electrode in such a manner as to face the spark discharge gap. The igniter is composed of a metallic material whose principal component is one of a platinum and an iridium. One type of the metallic material of the igniter contains an oxygen content of not more than 120 ppm. Another type of the metallic material of the igniter has a crystal grain of not less than 50 μm in mean diameter, and contains the oxygen content of not more than 300 ppm.

公开(公告)号：US07045939B2

公开(公告)日：2006-05-16

申请号：US10098380

申请日：2002-03-18

申请人： Hideki Teramura ,  Mamoru Musasa ,  Kiyohiro Kondo

发明人： Hideki Teramura ,  Mamoru Musasa ,  Kiyohiro Kondo

IPC分类号： H01T13/20 ,  H01T21/02

CPC分类号： H01T21/02 ,  H01T13/39

摘要： A spark plug used in an automotive internal combustion engine. The spark plug includes a center electrode. An insulator is disposed around the center electrode. A metal main body is disposed around the insulator. A ground electrode has a first end section connected to the metal main body, and a second end section located opposite to the center electrode. Additionally, a tip is formed of an alloy whose main component is Ir. The tip is secured to the ground electrode and serving as a spark consumption-resistant electrode material. The tip has an axis directed to the center electrode. In the spark plug, a molten and solidified section formed of alloy is disposed to fix the tip to the ground electrode. The molten and solidified section includes a surrounding molten and solidified section located surrounding a peripheral surface of a major part of the tip embedded in the ground electrode.

摘要翻译： 用于汽车内燃机的火花塞。 火花塞包括中心电极。 绝缘体设置在中心电极周围。 金属主体设置在绝缘体周围。 接地电极具有连接到金属主体的第一端部和与中心电极相对的第二端部。 此外，尖端由主要成分为Ir的合金形成。 尖端被固定到接地电极并用作耐火花消耗电极的电极材料。 尖端具有指向中心电极的轴线。 在火花塞中，设置由合金形成的熔融和固化部分，以将尖端固定到接地电极。 熔融和固化部分包括周围的熔融和凝固部分，其围绕嵌入在接地电极中的尖端的主要部分的周边表面。

公开(公告)号：US06707237B2

公开(公告)日：2004-03-16

申请号：US10216800

申请日：2002-08-13

申请人： Hideki Teramura ,  Mamoru Musasa ,  Junichi Kagawa

发明人： Hideki Teramura ,  Mamoru Musasa ,  Junichi Kagawa

IPC分类号： H01T1320

CPC分类号： H01T13/39 ,  H01T13/20

摘要： A spark plug is disclosed, in which a center electrode has, at the end thereof which forms a spark discharge gap, a noble metal chip which has a straight rod portion of 1.0 mm or less in diameter and 0.2 mm or more in length; width of coverage K of a ground electrode on which a rectangular noble metal chip is welded satisfies a relation of −d≦K≦0.5 mm (where, d represents the diameter of the end face of the center electrode); and width w of a portion of the discharge plane 111A which falls within a range corresponded to the axial extension of the end face 22B of the noble metal chip 22 provided on the center electrode 2 satisfies a relation of w

摘要翻译： 公开了一种火花塞，其中中心电极在形成火花放电间隙的端部具有直径为1.0mm或更小的直杆部分和长度为0.2mm或更大的直杆部分的贵金属芯片; 焊接矩形贵金属芯片的接地电极的覆盖宽度K满足-d <= K <= 0.5mm（其中，d表示中心电极的端面的直径）的关系; 并且放电平面111A的落在与设置在中心电极2上的贵金属芯片22的端面22B的轴向延伸相对应的范围内的宽度w满足w <2.1-K（以mm为单位）的关系 ），其中K是前述的覆盖宽度。

公开(公告)号：US5370832A

公开(公告)日：1994-12-06

申请号：US31931

申请日：1993-03-15

申请人： Makoto Sugimoto ,  Mamoru Musasa ,  Hiroyuki Tanabe ,  Masahiro Konishi

发明人： Makoto Sugimoto ,  Mamoru Musasa ,  Hiroyuki Tanabe ,  Masahiro Konishi

IPC分类号： C04B35/584 ,  C04B35/597 ,  H01B3/12 ,  H01T13/38 ,  C04B35/64

CPC分类号： H01T13/38 ,  C04B35/597

摘要： In a spark plug insulator having a sintered ceramic body, the ceramic body has silicon nitride (Si.sub.3 N.sub.4), aluminum nitride (AlN) and alumina (Al.sub.2 O.sub.3), the weight ratio of aluminum nitride (AlN) and alumina (Al.sub.2 O.sub.3) to silicon nitride (Si.sub.3 N.sub.4) being in the range of 0.093 to 1.439; and at least one sintering additive is among the group consisting of yttrium oxide (Y.sub.2).sub.3), calcium oxide (CaO), lanthanum oxide (La.sub.2 O.sub.3), magnesia (MgO), cerium oxide (CeO.sub.2), scandium oxide (Sc.sub.2 O.sub.3), strontium oxide (SrO), barium oxide (BaO) and neodymium (Nd.sub.2 O.sub.3). The weight percentage of the sintering additive ranges from 0.3% to 15.0% of the total weight of the silicon nitride (Si.sub.3 N.sub.4), aluminum nitride (AlN) and alumina (Al.sub.2 O.sub.3).

摘要翻译： 在具有烧结陶瓷体的火花塞绝缘子中，陶瓷体具有氮化硅（Si 3 N 4），氮化铝（AlN）和氧化铝（Al 2 O 3），氮化铝（AlN）和氧化铝（Al 2 O 3）与氮化硅的重量比 Si 3 N 4）在0.093〜1.439的范围内; （O 2）3），氧化钙（CaO），氧化镧（La 2 O 3），氧化镁（MgO），氧化铈（CeO 2），氧化钪（Sc 2 O 3），锶等中的至少1种烧结添加剂 氧化物（SrO），氧化钡（BaO）和钕（Nd2O3）。 烧结添加剂的重量百分比为氮化硅（Si 3 N 4），氮化铝（AlN）和氧化铝（Al 2 O 3）的总重量的0.3％至15.0％。

公开(公告)号：US5320569A

公开(公告)日：1994-06-14

申请号：US96435

申请日：1993-07-26

申请人： Takafumi Oshima ,  Mamoru Musasa ,  Tsutomu Okayama ,  Kazuya Iwata

发明人： Takafumi Oshima ,  Mamoru Musasa ,  Tsutomu Okayama ,  Kazuya Iwata

IPC分类号： H01T21/02

CPC分类号： H01T21/02

摘要： In a method of making a spark plug, a recess is provided on an end surface of the electrode blank metal. A straight neck portion is provided around the recess, and forming a tapered surface connecting from the straight neck portion toward an opposite side of the recess. A disc-shaped tip is placed in the recess of the electrode blank metal. The disc-shaped tip is pressed against an inner bottom of the recess in the axial direction of the electrode blank metal, and a laser beam welding is applied to an outer wall of the recess substantially all through its circumferential length by rotating the electrode blank metal.

摘要翻译： 在制造火花塞的方法中，在电极坯料的端面设有凹部。 在所述凹部周围设置有直的颈部，并且形成从所述直颈部向所述凹部的相对侧连接的锥面。 盘形尖端放置在电极坯料的凹槽中。 盘形尖端沿着电极坯料的轴向压在凹部的内底部，并且通过旋转电极坯料金属将激光束焊接基本上全部通过其周向长度施加到凹部的外壁上 。

公开(公告)号：US5198394A

公开(公告)日：1993-03-30

申请号：US775815

申请日：1991-10-11

申请人： Makoto Sugimoto ,  Mamoru Musasa ,  Hiroyuki Tanabe ,  Konishi Masahiro

发明人： Makoto Sugimoto ,  Mamoru Musasa ,  Hiroyuki Tanabe ,  Konishi Masahiro

IPC分类号： F23Q3/00 ,  C04B35/58 ,  C04B35/581 ,  H01T13/38

CPC分类号： C04B35/581 ,  H01T13/38

摘要： In a sintered ceramic body used for an insulator of a spark plug, magnesium (Mg) is uniformly diffused into grains of a nitride-based ceramic body. An amount of the diffused magnesium (Mg) is within a range from 20 ppm to 100 ppm which is calculated by reducing the magnesium (Mg) to its oxidized component.

公开(公告)号：US09010765B2

公开(公告)日：2015-04-21

申请号：US12237513

申请日：2008-09-25

申请人： Naomichi Miyashita ,  Mamoru Musasa

发明人： Naomichi Miyashita ,  Mamoru Musasa

IPC分类号： H01T13/08

CPC分类号： H01T13/08

摘要： A gasket for use around a thread neck of an automotive component, the gasket dimensioned to prevent the gasket from falling off of the thread neck and to prevent a male screw portion from biting into the gasket.

摘要翻译： 一种用于汽车部件的螺纹颈部周围的密封垫圈，其尺寸设计成防止垫圈从螺纹颈部脱落并防止外螺纹部分咬入垫圈。

公开(公告)号：US08766521B2

公开(公告)日：2014-07-01

申请号：US13813774

申请日：2011-07-29

申请人： Hirotoshi Yoshizaki ,  Naomichi Miyashita ,  Mamoru Musasa

发明人： Hirotoshi Yoshizaki ,  Naomichi Miyashita ,  Mamoru Musasa

IPC分类号： H01T13/08

CPC分类号： H01T13/08 ,  F16J15/0881 ,  F16J15/0887 ,  F16J15/0893

摘要： In process of threadably fitting a metal shell having a surface formed with an Ni plated layer into a mounting hole, in a state where a gasket made of stainless steel is uncompressed while being interposed between a protrusion part and an opening periphery, a surface of the gasket is out of contact with another surface thereof. When the gasket is viewed on a cross section in a direction of an axial line O, the gasket contacts with the protrusion part at one point of a point X, the gasket contacts with the opening periphery flat one point of a point Y, and the point Y is located outside of the point X in a radial direction. Further, the point Y is located inside of a maximum outer diameter Dz of a seating surface of the protrusion part in the radial direction.

摘要翻译： 在将具有形成有Ni镀层的表面的金属壳螺纹连接到安装孔中的过程中，在由不锈钢制成的垫圈未被压缩同时插入在突出部和开口周边之间的状态下， 垫圈与其另一表面脱离接触。 当在轴线O的方向上的横截面上看到垫圈时，垫圈在点X的一个点处与突起部分接触，垫圈与开口周边与点Y接合一点，并且 点Y位于点X的径向外侧。 此外，点Y位于突出部的径向的座面的最大外径Dz的内侧。

公开(公告)号：US08664844B2

公开(公告)日：2014-03-04

申请号：US13320552

申请日：2010-04-05

申请人： Naomichi Miyashita ,  Mamoru Musasa

发明人： Naomichi Miyashita ,  Mamoru Musasa

IPC分类号： H01T13/32

CPC分类号： B23K26/28 ,  B23K2101/36 ,  B23K2103/08 ,  B23K2103/18 ,  B23K2103/26 ,  H01T13/32 ,  H01T13/39 ,  H01T21/02

摘要： An object of the invention is to restrain separation of an electrode tip from a ground electrode or from a center electrode. A spark plug satisfies a condition 0.8≦A1/A2≦1.9, where, as viewed on a section which contains a center axis (O) of an electrode tip, A1 [Hv] is hardness of the electrode tip as measured outside a circle having a radius of 0.2 mm, with a boundary point (PA) on a surface of the spark plug between a fusion zone and the electrode tip serving as the center of the circle, and A2 [Hv] is hardness of the electrode tip as measured within the circle having a radius of 0.2 mm.

摘要翻译： 本发明的目的是抑制电极尖端与接地电极或中心电极的分离。 火花塞满足条件0.8 @ A1 / A2 @ 1.9，其中，从包含电极头的中心轴线（O）的部分观察，A1 [Hv]是在圆周外测量的电极尖端的硬度， 半径为0.2mm，在熔融区域和作为圆心的电极头之间的火花塞的表面上具有边界点（PA），并且A2 [Hv]是在电极尖端内测量的硬度 圆的半径为0.2mm。

公开(公告)号：US08638029B2

公开(公告)日：2014-01-28

申请号：US13641611

申请日：2011-04-15

申请人： Kazuyoshi Torii ,  Akira Suzuki ,  Mamoru Musasa

发明人： Kazuyoshi Torii ,  Akira Suzuki ,  Mamoru Musasa

IPC分类号： H01T13/20

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

摘要： A spark plug includes a center electrode, a ground electrode, and a noble metal tip. The noble metal tip is joined to an object member of at least one of two electrodes via a fusion zone. A projected overlap region of the noble metal tip and the fusion zone accounts for 70% or more of a projected region of the noble metal tip. The object member contains at least Si out of Al and Si such that the amount of Si is 0.4% by mass or higher and such that the total amount of Al and Si is 0.5% by mass. Multi-fusion spots exist on the surface of the fusion zone. Segments of a baseline which pass through the respective multi-fusion spots have a total length of a predetermined percentage of the length of the baseline. Joining strength to the noble metal tip can thereby be greatly improved when the member to be joined contains Si.

摘要翻译： 火花塞包括中心电极，接地电极和贵金属电极头。 贵金属端头通过熔融区域与两个电极中的至少一个的目标构件接合。 贵金属端头和熔融区域的突出重叠区域占贵金属电极头的投影区域的70％以上。 目标构件至少包含Al和Si中的Si，使得Si的量为0.4质量％以上，并且使Al和Si的总量为0.5质量％。 融合区表面存在多个融合点。 通过相应的多融合点的基线段具有基线长度的预定百分比的总长度。 因此，当待接合部件含有Si时，能够大大提高与贵金属电极头的接合强度。