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1. 发明专利

JPH10255606A MANUFACTURE OF VACUUM VALVE 失效
公开(公告)号：JPH10255606A
公开(公告)日：1998-09-25
申请号：JP5317197
申请日：1997-03-07
申请人： SHIBAFU ENG KK , TOSHIBA CORP
发明人： OKUTOMI ISAO , KUSANO TAKASHI , NAKABASHI MASAKO , OSABE KIYOSHI , TAKIGAWA RIKA , MARUYAMA MIHO , YAMAMOTO ATSUSHI , SEKI KEISEI , OSHIUMI KATSUMI
IPC分类号： B23K1/19 , C04B37/02 , H01H33/66
摘要： PROBLEM TO BE SOLVED: To attain high reliability, excellent cost performance, and environment measures by performing metallizing and airtight faying at the same time. SOLUTION: Manufacture of this vacuum valve has a first process to finish ceramic member surface to the surface roughness of 0.1 to 15μm, a second process to arrange a brazing material composing foil or line state Ag or/and Cu and Ti so as to be 0.05 to 4wt.% of Ti between an opposite ceramic member and a metal member, and a third process to seal and deposit the ceramic member and the metal member at a melting temperature or more determined by Ti quantity in non-oxide atmosphere.

2. 发明专利

JPH1092276A VACUUM VALVE AND ITS MANUFACTURE 失效
公开(公告)号：JPH1092276A
公开(公告)日：1998-04-10
申请号：JP24596496
申请日：1996-09-18
申请人： SHIBAFU ENG KK , TOSHIBA CORP
发明人： OKUTOMI ISAO , KUSANO TAKASHI , SEKI KEISEI , YAMAMOTO ATSUSHI , NAKABASHI MASAKO , MARUYAMA MIHO
IPC分类号： H01H33/66
摘要： PROBLEM TO BE SOLVED: To improve the airtightness and connecting strength of a vacuum valve by forming the brazing filler metal inserted and mounted for the connection of a sealing metal and a ceramic insulating container with Ag and Ti or the like at a specific ratio. SOLUTION: A pair of separable electrodes are arranged in a vacuum container airtightly sealed with a sealing metal via a brazing filler metal at the end section of a ceramic insulating container outer tube to form a vacuum valve. The inserted and mounted brazing filler metal is composed of the first metal containing at least one of Ag and Cu and the second metal containing at least one of Ti, Cr, V, Zr, Hf, and the percent content of the second metal is set to 0.05-5wt.%. The vacuum valve exerting a stable breaking property and a restriking characteristic over a long period is obtained.

3. 发明专利

JPH1076391A BRAZING FILLER METAL 失效
公开(公告)号：JPH1076391A
公开(公告)日：1998-03-24
申请号：JP23440096
申请日：1996-09-04
申请人： TOKURIKI HONTEN KK , SHIBAFU ENG KK , TOSHIBA F A SYSTEM ENG , TOSHIBA CORP
发明人： WATANABE OSAMU , NISHIJIMA MICHIHIKO , OKUTOMI ISAO , OKAWA MIKIO , KUSANO TAKASHI , YAMAMOTO ATSUSHI , SEKI KEISEI
IPC分类号： B23K35/14 , B23K35/30
摘要： PROBLEM TO BE SOLVED: To join a ceramic and ceramic, a metal and metal, and a ceramic and metal respectively with high reliability by using a brazing filler metal integrated a Cu-Ti alloy specified the amount of a Ti with an Ag or Ag alloy. SOLUTION: The Cu-Ti alloy specified the value of [Ti/(Cu+Ti)] to be 0.05-5% is integrated with the Ag or Ag alloy mainly composed of the Ag to form the brazing filler metal. In this brazing filler metal, 0.05-5% Ti is preferably entered into a Cu matrix with respect to the Cu-Ti alloy. By this way, the Ti is uniformly dispersed into the Cu matrix to obtain excellent workability. The value of Ag ratio [Ag/(Ag+Cu)] is preferably specified to be 30% or above as an Ag-Cu with respect to the Ag alloy. The Ag or Ag alloy is arranged on the surface of the Cu-Ti alloy and hot fixed by pressure at the temperature of the solid phase point of the Ag or Ag alloy or below under a vacuum or non-oxidizing atmosphere, whereby the integration is executed.

4. 发明专利

JPH09213153A CONTACT MATERIAL FOR VACUUM BREAKER AND MANUFACTURE OF CONTACT MATERIAL 失效
公开(公告)号：JPH09213153A
公开(公告)日：1997-08-15
申请号：JP2074296
申请日：1996-02-07
申请人： SHIBAFU ENG KK , TOSHIBA CORP
发明人： OKUTOMI ISAO , SEKIGUCHI SHIGEAKI , SEKI KEISEI , KUSANO TAKASHI , YAMAMOTO ATSUSHI
IPC分类号： H01H1/025 , H01H1/02 , H01H11/04
摘要： PROBLEM TO BE SOLVED: To provide a contact material for vacuum breaker, which can stabilize the fusion-resistant and non-consumable characteristics and excels in the breaking performance. SOLUTION: This contact material for a vacuum breaker is composed of a high conductive component containing either or both of Cu and Ag, an arc resistance component having particle sizes between 0.1-150μm and containing Cr in at least 90vol.% of the whole contents, and the first auxiliary component having particle sizes between 0.1-150μm and containing either or both of Al and Si, and these are mixed together uniformly to prepare a mixture powder, and the relative density is made over 88%.

5. 发明专利

JPH09198975A VACUUM VALVE AND CONTACT POINT FOR VACUUM VALVE 失效
公开(公告)号：JPH09198975A
公开(公告)日：1997-07-31
申请号：JP495696
申请日：1996-01-16
申请人： SHIBAFU ENG KK , TOSHIBA CORP
发明人： OKUTOMI ISAO , KUSANO TAKASHI , SEKI KEISEI , YAMAMOTO ATSUSHI , SEKIGUCHI SHIGEAKI
IPC分类号： H01H33/66
摘要： PROBLEM TO BE SOLVED: To improve cutoff performance by providing a discontinuous portion in the composition change of components at least at one (r) section when the relation y=f(r) is satisfied between the component quantity (y) of the arc- resistant component and the distance (r) from the contact point center. SOLUTION: Contact points for a vacuum valve with the radius R having the same component composition for the same radius contain the conductive component, arc-resistant component, and auxiliary component as required. When the relation y=f(r) is satisfied between the component quantity y(0

6. 发明专利

JPH09106743A VACUUM BULB 失效
公开(公告)号：JPH09106743A
公开(公告)日：1997-04-22
申请号：JP26261595
申请日：1995-10-11
申请人： SHIBAFU ENG KK , TOSHIBA CORP
发明人： OKUTOMI ISAO , KUSANO TAKASHI , SEKI KEISEI , YAMAMOTO ATSUSHI
IPC分类号： H01H33/66
摘要： PROBLEM TO BE SOLVED: To prevent decrease of airtightness and joining strength resulting from a metal compound produced between active metal contained in brazing material and a sealing fitting. SOLUTION: Plating of Cu, Ag, or CuAg alloy is conducted on the brazing faces of sealing fittings 3A, 3B. Thereby, not all the plating layer is allowed to fuse but one part is left as a solid portion so that the diffusion of Ni in the sealing fitting 3A, 3B is suppressed.

7. 发明专利

JPH1174291A SEMICONDUCTOR ELEMENT AND POWER CONVERTER 失效
公开(公告)号：JPH1174291A
公开(公告)日：1999-03-16
申请号：JP27490097
申请日：1997-10-08
申请人： SHIBAFU ENG KK , TOSHIBA CORP
发明人： OKUTOMI ISAO , KUSANO TAKASHI , KIJIMA KENJI , SEKI KEISEI , YAMAMOTO ATSUSHI
IPC分类号： H01L29/74 , H01L21/52 , H01L29/78 , H02M1/00
摘要： PROBLEM TO BE SOLVED: To provide a semiconductor element, in which the contacting efficiencies between a heat buffering plate and a semiconductor substrate and electrode bodies, are improved, and a power converter using the element. SOLUTION: In a semiconductor element, a semiconductor substrate 2 in an insulating container 6 is arranged between a press-contactable cathode body 4 and a press-contactable anode body 5, while the substrate 2 is held between discoid Mo-made heat buffering plates 3. Then the substrate 2 is connected to a gate contact 7 on the cathode 4 side, and the container 6 is closed against the outside, while the cathode and anode bodies 4 and 5 are respectively coupled with one end of the container 6 via a cover 8a and the other end of the container 6 through another cover 8b. A gate current is supplied to the gate contact 7 through a gate conductor 9 connected to the outside. In this semiconductor element, the surfaces of the heat-buffering plates 3 are coated with one of Ag, In, Sn, or Zn.

8. 发明专利

JPH1173859A VACUUM VALVE 失效
公开(公告)号：JPH1173859A
公开(公告)日：1999-03-16
申请号：JP23570097
申请日：1997-09-01
申请人： SHIBAFU ENG KK , TOSHIBA CORP
发明人： OKUTOMI ISAO , KUSANO TAKASHI , SEKI KEISEI , YAMAMOTO ATSUSHI
IPC分类号： H01H33/66
摘要： PROBLEM TO BE SOLVED: To satisfy joining strength, airtight joining capability, and voltage resistant characteristics together, and enhance reliability by specifying the content of Si oxide or (Si+Mg) oxide contained in an oxide constituting a cylindrical ceramic container having a metal cover, a contact, an electrode, and a bellows in an opening edge surface region and the specified outer circumferential region. SOLUTION: An oxide constituting a cylindrical container having outer radius R and inner radius (r) contains 1-10% Si oxide or (Si+Mg) oxide, and drop in sintering capability and strength are not generated. The ratio B/A of the content per a unit area B in the outer circumferential region between concentric circles having a radius of R mm and a radius of R-0.6 mm to the content per a unit area A in the opening edge surface region is specified to 0.8-1.3. The ratio B/A of the content per a unit area B' in the inner circumferential region between concentric circles having a radius of (r) mm and a radius of (r)+0.6 mm to the content per a unit area A is specified to 0.8-1.3. The generation of voids and segregation of SiO2 are prevented, and the opening edge surface is optimized. The container is joined to a cover with a brazing filler metal having a specified component of Ag, Cu, Ti.

9. 发明专利

JPH10265808A PRODUCTION OF HEAT TREATING VESSEL, CONTACT POINT ALLOY 失效
公开(公告)号：JPH10265808A
公开(公告)日：1998-10-06
申请号：JP7348697
申请日：1997-03-26
申请人： SHIBAFU ENG KK , TOSHIBA ELECTRONIC ENG , TOSHIBA CORP
发明人： OKUTOMI ISAO , SEKIGUCHI SHIGEAKI , KUSANO TAKASHI , YAMAMOTO ATSUSHI , SEKI KEISEI
IPC分类号： B22F3/10 , C22C1/04 , H01H1/02 , H01H11/04 , H01H33/66
摘要： PROBLEM TO BE SOLVED: To obtain a contact point alloy having stable large current shutting-off performance and more particularly restrike suppression characteristic by specifying the average surface roughness of at least either of the open surface and cap of a vessel constituting a heat treating vessel. SOLUTION: The average surface roughness of at least either of the open surface end of the heat treating vessel and the cap facing the open surface end is specified to 5 to 25 μm (Rmax.). As a result, the self-adjustment of the quality and pressure of the inside of the vessel and the external atmosphere at the time of a heat treatment through the vent path on the surface of the heat treating vessel or the cap while executing the ventilating and hermetic sealing to the atmospheric state desirable for the heat treatment is made possible and the fluctuations in the compd. ratios based on the excessive selective evaporation splashing of the high vapor pressure component in the contact point alloy are eliminated. The contact point alloy component ratios after the heat treatment are this kept constant. Any one among metallic Cr, Cr carbide, Cr oxide, Al oxide and Ti oxide is preferably arranged in at least one part of the vessel and the cap.

10. 发明专利

JPH10112246A VACUUM VALVE 失效
公开(公告)号：JPH10112246A
公开(公告)日：1998-04-28
申请号：JP26497496
申请日：1996-10-07
申请人： SHIBAFU ENG KK , TOSHIBA CORP
发明人： OKUTOMI ISAO , KAGENAGA YOSHIMASA , WATANABE KENJI , UCHIYAMA YOSHIMI , NIWA YOSHIMITSU , HONMA MITSUTAKA , SOMEI HIROMICHI , SEKI KEISEI , KUSANO TAKASHI
IPC分类号： H01H33/66
摘要： PROBLEM TO BE SOLVED: To stabilize an arc by the generation of magnetic flux in an axial direction between the magnetic poles by using a magnetic body which does not have the shape of closed loop, so that the end parts thereof act as the magnetic poles, and further making a counter electrode generate the magnetic pole on the end part of the magnetic body. SOLUTION: Current-carrying rods 2 are fixed to a point of a current-carrying rod 1 on a circle, concentric with the current-carrying rod 1, and magnetic bodies 3 are respectively installed near the current-carrying rods 2. When electric current in a predetermined direction, is flowed to the current-carrying rods 2, a generated magnetic flux C is passed inside of the magnetic body 3, thereby both ends 3a, 3a of the magnetic body act as the magnetic poles of the polarities opposite to each other, because the magnetic body 3 is not a closed loop. Here, the current-carrying rods 2 and magnetic bodies 3 of the same shape are installed on a mutually facing electrode, thereby the different magnetic poles are generated, because the directions of the electric currents flowing in the current-carrying rods 2 are opposite to each other in the electrodes. Thereby the magnetic field in an axial direction is generated between the magnetic poles of the magnetic bodies opposite to each other. That is, the magnetic field in the axial direction can be generated with a simpler structure, in comparison with a vertical magnetic field coil.

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