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17 条记录 (耗时 0.012 秒)

    Stack-type piezoelectric element and process for production thereof
    1.
    发明授权
    Stack-type piezoelectric element and process for production thereof 失效
    堆叠型压电元件及其制造方法

    公开(公告)号：US5233260A

    公开(公告)日：1993-08-03

    申请号：US913348

    申请日：1992-07-15

    申请人： Takeshi Harada ,  Akiomi Kohno ,  Akiomi Kohno ,  Shigeru Jomura

    发明人： Takeshi Harada ,  Akiomi Kohno ,  Akiomi Kohno ,  Shigeru Jomura

    IPC分类号： H01L41/047 ,  H01L41/083 ,  H01L41/297

    CPC分类号： H01L41/297 ,  H01L41/0477 ,  H01L41/083 ,  Y10T29/42

    摘要： In an overall stacked piezoelectric element, the material for the electrode was selected from aluminum, nickel and copper each alone or alloys based on aluminum, nickel or copper, and further the parts of the electrodes which contact with molding resin on the side face of the stacked body and the parts which have to be insulated from the lead-out terminals were subjected to an oxidation or nitriding treatment. As the result, an improved element was obtained which is of a high reliability, suited to low voltage operation and suffers no short-circuit of the electrodes even when water permeates to the side face of the stacked body during operation in a humid atmosphere.

    摘要翻译： 在整体堆叠的压电元件中，用于电极的材料单独选自铝，镍和铜或基于铝，镍或铜的合金，还有在模制树脂的侧面上与模制树脂接触的部分 堆叠体和必须与引出端子绝缘的部件进行氧化或氮化处理。 结果，获得了具有高可靠性的改进元件，其适用于低电压操作，并且即使当在潮湿气氛中操作期间水渗透到堆叠体的侧面时也不会发生电极的短路。

    Electromagnetic flowmeter and manufacture method of same
    2.
    发明授权
    Electromagnetic flowmeter and manufacture method of same 失效
    电磁流量计及其制造方法

    公开(公告)号：US5400659A

    公开(公告)日：1995-03-28

    申请号：US12472

    申请日：1993-02-02

    申请人： Kazuaki Yokoi ,  Masatsugu Arai ,  Akiomi Kohno ,  Yuji Yoshitomi ,  Yutaka Sakurai ,  Tamio Ishihara

    发明人： Kazuaki Yokoi ,  Masatsugu Arai ,  Akiomi Kohno ,  Yuji Yoshitomi ,  Yutaka Sakurai ,  Tamio Ishihara

    IPC分类号： C04B37/02 ,  G01F1/58

    CPC分类号： G01F1/588 ,  C04B35/645 ,  C04B35/653 ,  C04B37/021 ,  G01F1/584 ,  C04B2235/6567 ,  C04B2237/34 ,  C04B2237/343 ,  C04B2237/348 ,  C04B2237/365 ,  C04B2237/368 ,  C04B2237/402 ,  C04B2237/704 ,  C04B2237/706 ,  C04B2237/765

    摘要： An electromagnetic flowmeter comprises a ceramic measuring tube through which fluid to be measured flows, a pair of electromagnetic coils disposed on the outer surface of the measuring tube in the central region thereof at diametrically opposite positions and generating a magnetic field in a direction perpendicular to the direction of flow of the fluid, a pair of measuring electrodes fixed to the outer surface of the measuring tube in the central region thereof at diametrically opposite positions and having electrode axes perpendicular to both the direction of flow of the fluid and the direction of the magnetic field, and a pair of metallic shields fixed to the outer surface of the measuring tube in surrounding relation to the measuring electrodes. A pair of the measuring electrodes and a pair of the metallic shields are fixed to the ceramic measuring tube by a reaction product due to an interface reaction with the ceramic measuring tube under heating.

    摘要翻译： 电磁流量计包括陶瓷测量管，待测量的流体流过测量管的外表面上的一对电磁线圈，其中心区域在直径相对的位置处设置在测量管的外表面上，并在垂直于该测量管的方向上产生磁场 流体的流动方向，一对测量电极在其中心区域的直径相对的位置处固定在测量管的外表面上，并且具有垂直于流体的流动方向和磁性方向两者的电极轴线 以及与测量电极相关的固定到测量管的外表面的一对金属屏蔽件。 一对测量电极和一对金属屏蔽件由于与陶瓷测量管在加热下的界面反应而被反应产物固定在陶瓷测量管上。

    Electromagnetic flowmeter
    4.
    发明授权
    Electromagnetic flowmeter 失效
    电磁流量计

    公开(公告)号：US5307687A

    公开(公告)日：1994-05-03

    申请号：US890245

    申请日：1992-05-29

    申请人： Masatsugu Arai ,  Akiomi Kohno ,  Kazuaki Yokoi ,  Yuuji Yoshitomi ,  Yutaka Sakurai ,  Tamio Ishihara

    发明人： Masatsugu Arai ,  Akiomi Kohno ,  Kazuaki Yokoi ,  Yuuji Yoshitomi ,  Yutaka Sakurai ,  Tamio Ishihara

    IPC分类号： G01F1/58

    CPC分类号： G01F1/584 ,  G01F1/58

    摘要： An electromagnetic flowmeter for measuring the flow rate of a fluid. The flowmeter has a measuring tube made of ceramics and defining a fluid passage therein for the fluid, electrodes having ends exposed to an interior of the measuring tube through holes which are formed in a wall of the measuring tube, a magnetic field generating device disposed around the electrodes, and a case encasing the measuring tube, the electrodes and the magnetic field generating means. A ratio t/R between a wall thickness t and a mean radius R of the measuring tube is determined such that stress generated in the measuring tube by the fluid in the measuring tube does not exceed the rupture stress of the measuring tube. The measuring tube can have flanges on both axial ends thereof, a radial height of the flange from an outer surface of the measuring tube is not greater than the wall thickness of the tube when the tube is made of Al.sub.2 O.sub.3 and not greater than a value three times as large as the tube wall thickness when the tube is made of Si.sub.3 N.sub.4. The electrodes may be made from Ni or an Ni alloy and are secured to the measuring tube by press-fitting into holes formed in the tube wall or by jointing. The electromagnetic flowmeter thus obtained exhibits high strength and reliability and high degree of gas-tightness in the tube portions around the electrodes.

    摘要翻译： 一种用于测量流体流量的电磁流量计。 流量计具有由陶瓷制成的测量管，用于流体的流体通道，具有暴露于测量管内部的端部的电极，通孔形成在测量管的壁中，磁场产生装置设置在 电极和封装测量管的壳体，电极和磁场产生装置。 确定测量管的壁厚t和平均半径R之间的比率t / R，使得由测量管中的流体在测量管中产生的应力不超过测量管的破裂应力。 测量管在其两个轴向端都可以具有凸缘，当管由Al2O3制成并且不大于三值时，法兰从测量管的外表面的径向高度不大于管的壁厚 当管由Si 3 N 4制成时，管壁厚度的倍数。 电极可以由Ni或Ni合金制成，并通过压配合到形成在管壁中的孔或通过接合而固定到测量管。 由此获得的电磁流量计在电极周围的管部显示出高的强度和可靠性以及高气密性。

    Stack-type piezoelectric element, process for producing the same, and stack-type piezoelectric device
    5.
    发明授权
    Stack-type piezoelectric element, process for producing the same, and stack-type piezoelectric device 失效
    堆叠式压电元件，其制造方法和叠层型压电元件

    公开(公告)号：US5196756A

    公开(公告)日：1993-03-23

    申请号：US574373

    申请日：1990-08-29

    申请人： Akiomi Kohno ,  Masatugu Arai ,  Takeshi Harada

    发明人： Akiomi Kohno ,  Masatugu Arai ,  Takeshi Harada

    IPC分类号： H01L41/083 ,  H01L41/22

    CPC分类号： H01L41/0471 ,  H01L41/083 ,  H01L41/273 ,  H01L41/277

    摘要： According to the present invention, there are provided a stack-type piezoelectric element constructed of a stacked body comprising plural layers of sintered piezoelectric ceramic material and electrodes which lie between the respective layers of the piezoelectric ceramic material, wherein said electrodes are formed of a material capable of diffusion-bonding with said piezoelectric ceramic material at a lower temperature than the sintering temperature of said ceramic material, a process for producing the same, and a stack-type piezoelectric device using said stack-type piezoelectric element.

    摘要翻译： 根据本发明，提供了一种叠层型压电元件，其由层叠体构成，该堆叠体包括多层烧结压电陶瓷材料和位于压电陶瓷材料的各层之间的电极，其中所述电极由材料形成 能够在比所述陶瓷材料的烧结温度低的温度下与所述压电陶瓷材料扩散接合，其制造方法和使用所述堆叠型压电元件的叠层型压电装置。

    Ceramic conduit assembly with metal outer tube
    6.
    发明授权
    Ceramic conduit assembly with metal outer tube 失效
    陶瓷导管组件带金属外管

    公开(公告)号：US4914950A

    公开(公告)日：1990-04-10

    申请号：US259321

    申请日：1988-10-18

    申请人： Ikuo Uematsu ,  Masao Fukunaga ,  Akiomi Kohno

    发明人： Ikuo Uematsu ,  Masao Fukunaga ,  Akiomi Kohno

    IPC分类号： F16L49/00 ,  G01F1/58 ,  G01F15/18

    CPC分类号： F16L49/00 ,  G01F1/58 ,  G01F15/185

    摘要： A ceramic conduit with a metal outer tube is joined to bonding rings through insert members between end surfaces of the rings and annular bonding surfaces, with the annular bonding surface being not parallel to the axis of the conduit and the insert member being bonded to the ring and conduit. The rings are joined to the outer tube through welds between forward ends of annular protrusions provided in end surfaces which are the reverse surfaces of the surface bonded with the insert members and the forward ends of annular protrusions provided in axial end surfaces of the outer tube. The inner periphery of the outer tube is fitted on the outer periphery of the conduit with a small gap therebetween. The rings are bonded to the conduit with the insert members by being pressed against the conduit in the axial direction of the conduit and only a small quantity of heat is transmitted from the welds to other portions. The outer tube is joined to the rings through portions having a low rigidity to achieve a highly reliable metal and ceramic bonding is achieved and the bonded surfaces are not deteriorated by the welding nor is the outer tube deformed by the welding heat, and an external load is not substantially transmitted to the bonded surfaces.

    摘要翻译： 具有金属外管的陶瓷导管通过环的端表面之间的插入构件和环形接合表面连接到结合环，环形接合表面不平行于导管的轴线并且插入构件结合到环 和导管。 这些环通过设置在端面的环形突起的前端之间的焊接部分与外管接合，端面是与插入件接合的表面的相反表面，以及设置在外管的轴向端面中的环形突起的前端。 外管的内周与导管的外周嵌合，间隙较小。 通过在管道的轴向方向上被压靠在管道上，环通过插入件结合到导管上，并且只有少量的热量从焊缝传递到其它部分。 外管通过具有低刚度的部分连接到环，以实现高可靠性的金属，并且实现陶瓷接合，并且接合表面不会由于焊接而劣化，也不会由于焊接热而导致外管变形，并且外部负载 基本上不传递到接合表面。