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公开(公告)号：US4488081A
公开(公告)日：1984-12-11
申请号：US427820
申请日：1982-09-29
申请人： Ryoji Kondo , Kanji Higuchi , Kozo Takamura , Yasuyuki Sato , Minoru Nagai
发明人： Ryoji Kondo , Kanji Higuchi , Kozo Takamura , Yasuyuki Sato , Minoru Nagai
CPC分类号： H01T13/39 , F02B2075/027
摘要： An ignition plug of extended durability which reduces crack formation in noble metal layer on the center electrode and the ground electrode by joining a noblemental layer consisting of 85 to 70% by weight of Pt and 15 to 30% by weight of Ir to the spark discharge portion of the center electrode and also another noble metal layer consisting of 90 to 70% by weight of Pt and 10 to 30% by weight of Ni to the spark discharge portion of the ground electrode.
摘要翻译： 一种具有延长的耐久性的火花塞，其通过将由85至70重量％的Pt和15至30重量％的Ir组成的凸起层与火花放电接合而减少中心电极和接地电极上的贵金属层中的裂纹形成 中心电极的部分以及由接地电极的火花放电部分组成的由90〜70重量％的Pt和10〜30重量％的Ni组成的贵金属层。
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公开(公告)号：US4540910A
公开(公告)日：1985-09-10
申请号：US552964
申请日：1983-11-17
申请人： Ryoji Kondo , Kozo Takamura , Kanji Higuchi
发明人： Ryoji Kondo , Kozo Takamura , Kanji Higuchi
CPC分类号： H01T13/39
摘要： A spark plug for internal-combustion engines has a spark discharge gap defined between at least two electrodes opposing to each other, and a platinum-containing wear-resistant discharging layer provided on one of the electrodes. The spark plug has a thermal stress relieving layer disposed between the discharging layer and the base metal constituting the one eletrode. The thermal stress relieving layer is made of a platinum base alloy containing nickel, which constitutes the base metal. The discharging layer may be made of a material consisting essentially of 70 to 90 wt % platinum and 30 to 10 wt % iridium. The thermal stress relieving layer may be made of a material consisting essentially of 5 to 95 wt % platinum and 95 to 5 wt % nickel. Another platinum-containing wear-resistant layer may be provided on the other electrode, the wear-resistant layer being made of a material consisting essentially of 5 to 60 wt % nickel and 95 to 40 wt % platinum.
摘要翻译： 用于内燃机的火花塞具有限定在彼此相对的至少两个电极之间的火花放电间隙和设置在其中一个电极上的含铂耐磨性放电层。 火花塞具有设置在排出层和构成一电极的基体金属之间的热应力消除层。 热应力消除层由含有镍的铂基合金制成，构成贱金属。 放电层可以由基本上由70-90重量％的铂和30至10重量％的铱组成的材料制成。 热应力消除层可以由基本上由5至95重量％的铂和95至5重量％的镍组成的材料制成。 另一个含铂的耐磨层可以设置在另一个电极上，该耐磨层由基本上由5至60重量％的镍和95至40重量％的铂组成的材料制成。
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3.再颁专利Spark plug for internal combustion engines having an alloy layer between the electrodes and tip ends 失效用于在电极和末端之间具有合金层的内燃机的火花塞
公开(公告)号：USRE35012E
公开(公告)日：1995-08-08
申请号：US73680
申请日：1993-06-09
申请人： Kozo Takamura , Yasuyuki Sato , Kanji Higuchi
发明人： Kozo Takamura , Yasuyuki Sato , Kanji Higuchi
CPC分类号： H01T13/32 , H01T13/20 , H01T13/39 , F02B2075/027
摘要： A spark plug for an internal combustion engine including a center electrode, an earth electrode, a metal tip joined by welding to an ignition section of at least one of the center electrode and the earth electrode, and an alloy layer located at a welding portion between the metal tip and the at least one electrode. The metal tip is formed of material highly resistant to heat and wear which is distinct in the coefficient of thermal expansion from the material of the electrodes. The alloy layer is formed to have a thickness of at least about 10.mu., so as to avoid the rupture of the metal tip along the surface thereof adjacent to the welding portion.
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4.发明授权Spark plug for internal combustion engines having an alloy layer between the electrodes and tip ends 失效用于在电极和末端之间具有合金层的内燃机的火花塞
公开(公告)号：US4581558A
公开(公告)日：1986-04-08
申请号：US450801
申请日：1982-12-17
申请人： Kozo Takamura , Yasuyuki Sato , Kanji Higuchi
发明人： Kozo Takamura , Yasuyuki Sato , Kanji Higuchi
CPC分类号： H01T13/32 , H01T13/20 , H01T13/39 , F02B2075/027
摘要： A spark plug for an internal combustion engine including a center electrode, an earth electrode, a metal tip joined by welding to an ignition section of at least one of the center electrode and the earth electrode, and an alloy layer located at a welding portion between the metal tip and the at least one electrode. The metal tip is formed of material highly resistant to heat and wear which is distinct in the coefficient of thermal expansion from the material of the electrodes. The alloy layer is formed to have a thickness of at least about 10.mu., so as to avoid the rupture of the metal tip along the surface thereof adjacent to the welding portion.
摘要翻译： 一种用于内燃机的火花塞，其包括中心电极，接地电极，通过焊接连接到中心电极和接地电极中的至少一个的点火部分的金属端头以及位于焊接部分之间的合金层 金属尖端和至少一个电极。 金属尖端由耐高温和耐磨性的材料形成，其热膨胀系数与电极的材料不同。 合金层形成为具有至少约10微米的厚度，以避免金属末端沿其邻近焊接部分的表面破裂。
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5.发明授权
公开(公告)号：US4267483A
公开(公告)日：1981-05-12
申请号：US043843
申请日：1979-05-30
申请人： Koichi Nakajima , Tomoji Ishiguro , Tokuhiko Okamoto , Minoru Konaka , Minoru Nagai , Kanji Higuchi , Kenji Sasaki
发明人： Koichi Nakajima , Tomoji Ishiguro , Tokuhiko Okamoto , Minoru Konaka , Minoru Nagai , Kanji Higuchi , Kenji Sasaki
摘要： A spark plug for an internal combustion engine comprises (a) an insulator surrounding a central electrode and (b) a housing having a grounded electrode and disposed on the periphery of the insulator. A taper-nose portion of the insulator, which is designed to be exposed to unburnt carbon in combustion gases of a combustion chamber, is modified to facilitate carbon removal from the taper-nose portion and to maintain excellent electrical insulation. The modification comprises a coating of a mixture of vanadium oxide and zirconium oxide in the form of a porous layer or a sponge-like porous layer having an irregularly-shaped structure with pores; it is fixed to the exposed surface of the taper-nose portion to improve the self-cleaning ability of the spark plug without decreasing the degree of electrical insulation provided by the insulator. The coating of the mixture having the porous structure is formed by applying a suspension of the mixture to the taper-nose portion of the spark plug and by drying the same in situ. The resulting coating is then heated further to obtain a more adherent coating of increased durability and better self-cleaning ability.
摘要翻译： 用于内燃机的火花塞包括（a）围绕中心电极的绝缘体和（b）具有接地电极并设置在绝缘体的周边上的壳体。 被设计成暴露于燃烧室的燃烧气体中的未燃烧碳的绝缘体的锥形鼻部被改性以便于从锥形鼻部分除去碳并保持优异的电绝缘性。 该改性包括多孔层形式的氧化钒和氧化锆的混合物的涂层或具有不规则形状的具有孔的结构的海绵状多孔层; 固定在锥形鼻部的暴露表面上，以提高火花塞的自清洁能力，而不会降低由绝缘体提供的电绝缘度。 具有多孔结构的混合物的涂层通过将混合物的悬浮液施加到火花塞的锥形鼻部并通过原位干燥而形成。 然后将所得到的涂层进一步加热以获得更加粘附的涂层，其具有增加的耐久性和更好的自清洁能力。
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公开(公告)号：US4250426A
公开(公告)日：1981-02-10
申请号：US950541
申请日：1978-10-12
申请人： Koichi Nakajima , Tomoji Ishiguro , Tokuhiko Okamoto , Minoru Konaka , Minoru Nagai , Kanji Higuchi , Kenji Sasaki
发明人： Koichi Nakajima , Tomoji Ishiguro , Tokuhiko Okamoto , Minoru Konaka , Minoru Nagai , Kanji Higuchi , Kenji Sasaki
CPC分类号： H01T13/14
摘要： A spark plug, wherein a central electrode is electrically insulated from anuter electrically-conductive casing (ground to an internal combustion engine when in use) by an insulator sealed in the casing, separating the central electrode from the casing and having a taper-nose portion which is designed to be exposed to unburnt carbon in combustion gases of a combustion chamber, is modified to facilitate carbon removal from the taper-nose portion. Discrete isolated particles or isolated aggregates of particles of vanadium oxide are adhered over the exposed surface of the taper-nose portion to improve the self-cleaning ability of the spark plug without decreasing the degree of electrical insulation provided by the insulator. The particles of vanadium oxide are formed from a suspension which is applied to the surface of the taper-nose portion of the spark plug. The resulting coating is then dried in situ. Further heating results in having vanadium oxide particles, in insular form, firmly adhered to the surface of the taper-nose portion.
摘要翻译： 一种火花塞，其中中心电极与外导电壳体（在使用时接地到内燃机）通过密封在壳体中的绝缘体电绝缘，将中心电极与壳体分离并具有锥形鼻 被设计为暴露于燃烧室的燃烧气体中的未燃烧碳的部分被改性以便于从锥形鼻部分除去碳。 离散的隔离颗粒或分离的氧化钒颗粒的聚集体粘附在锥形鼻部的暴露表面上，以提高火花塞的自清洁能力，而不会降低由绝缘体提供的电绝缘程度。 氧化钒颗粒由施加到火花塞的锥形鼻部的表面的悬浮液形成。 然后将所得涂层原位干燥。 进一步加热导致具有岛状形式的氧化钒颗粒牢固地粘附在锥形鼻部的表面上。
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公开(公告)号：US4907256A
公开(公告)日：1990-03-06
申请号：US343612
申请日：1989-04-27
CPC分类号： H04M3/36 , H04Q3/0016 , H04Q3/66 , H04Q2213/13095 , H04Q2213/13103 , H04Q2213/13164 , H04Q2213/13166 , H04Q2213/13213
摘要： Disclosed is an exchange system having an originating call restriction function comprising a unit for counting originating calls, a unit for counting incoming calls, a storage unit for storing a number (N.sub.o) or originating calls that can be accepted from accommodated subscribers (111) within a predetermined period, storage unit for storing a number (N.sub.i) of incoming calls that can be accepted within a predetermined period, and a unit for correcting the number of calls that can be accepted. The correction of the number of calls that can be accepted is effected by comparing the number (N.sub.i) of incoming calls that can be accepted and a number (N.sub.ai) of accepted incoming calls. When the difference between the number (N.sub.i) of incoming calls that can be accepted and the number (N.sub.ai) of accepted incoming calls is decreased below a predetermined value, the number (N.sub.o) of originating calls that can be accepted is decreased by a predetermined correcting value (.alpha.), and the number (N.sub.i) of incoming calls that can be accepted is increased by the correcting value (.alpha.), Whereby, when there is processing congestion, the incoming call restriction level is relaxed and the originating call restriction level is increased. 7
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