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81. 发明专利

JPH11111089A BUSHING 失效
公开(公告)号：JPH11111089A
公开(公告)日：1999-04-23
申请号：JP26461597
申请日：1997-09-29
申请人： MITSUBISHI ELECTRIC CORP
发明人： TAKAHASHI MASAYUKI , SAKAI MICHIO , YORITA MITSUMASA
IPC分类号： H01B17/26
摘要： PROBLEM TO BE SOLVED: To prevent deterioration of sealing in the vacuum formation by holding a connecting conductor in a ceramic insulating cylinder, joining both together by a joining ring blazed on the whole periphery, and fixing the insulating cylinder and an insulating vessel outer wall by a fixing ring blazed on the whole periphery. SOLUTION: Since a heat resistant ceramic insulating cylinder 7 and a connecting conductor 8 are joined together in a lengthwise directional one place by a joining ring 9, an elongation difference between the insulating cylinder 7 and the connecting conductor 8 by a thermal expansion difference at a high temperature at vacuum formation, is absorbed, and the occurrence of thermal stress of both is relieved. The connecting conductor 8 is supported by the inside edges of flange parts 7a and 7b of the insulating cylinder 7, and durability is obtained against a load on the connecting conductor 8 in use. Since joining in the joining ring 9 is also performed in the small diameter side flange part 7a, that is, in a projecting end part of the insulating cylinder 7 to the outside of an insulating vessel, after the vacuum formation of the insulating vessel, the inside of the insulating cylinder 7 becomes evacuated, and high insulating performance is obtained between the connecting conductor 8 and the joining ring 9 becoming high electric potential at using time.

82. 发明专利

JPH10129307A SECTION SWITCHING DEVICE FOR AC FEEDER EQUIPMENT 失效
公开(公告)号：JPH10129307A
公开(公告)日：1998-05-19
申请号：JP29190396
申请日：1996-11-01
申请人： MITSUBISHI ELECTRIC CORP
发明人： YORITA MITSUMASA
IPC分类号： B60M3/04
摘要： PROBLEM TO BE SOLVED: To provide a section switching device to prevent the occurrence of an abnormal voltage due to switching operation of a change-over switch, in a section part to effect source switching to an AC machine feeder wire for an electric railroad. SOLUTION: The waveform of the voltage of an AC source to feed a power to the change-over switch of a section part is detected by voltage detecting means 10a and 10b and the presence of an electric car in a intermediate section is detected by an electric car detector 12. Operation instruction means 17-20 input a detecting signal therefrom as an input and when a given condition is satisfied, operation is started and the voltage zero point of the AC source is detected. When the voltage zero point is detected, operation starting instruction is outputted to clocking means 25-28. When, after the clocking means 25-28 start clocking operating, a reset time comes so that change-over switches a1 and b1 effect turn-ON and turn-OFF at a voltage zero point, an operation signal for given turn-ON and turn-OFF is sent to the change-over switches a1 and b1.

83. 发明专利

JPH06150787A VACUUM VALVE 失效
公开(公告)号：JPH06150787A
公开(公告)日：1994-05-31
申请号：JP32609392
申请日：1992-11-10
申请人： MITSUBISHI ELECTRIC CORP
发明人： TORIIE HIDEAKI , KOYAMA KENICHI , YORITA MITSUMASA
IPC分类号： H01H33/66
摘要： PURPOSE:To control the arc generating point and disperse the arcs to over the surface of a main electrode quickly. CONSTITUTION:An arc-shaped conductor of a coil electrode 20 is connected with the peripheral part of a main electrode 30, and a magnetic field in the vertical direction is generated in the main electrode, wherein a projection 40 is formed in a position some nearer to the center from the peripheral connection part of the main electrode 30 with the coil electrode 20. In an electrode structure where one end of the coil part is connected 1 the central part of the main electrode, such a projection is formed in a position in radial direction outer than the center connection part of the main electrode with the coil part.

84. 发明专利

JPH05298972A 失效
公开(公告)号：JPH05298972A
公开(公告)日：1993-11-12
申请号：JP10425392
申请日：1992-04-23
申请人： MITSUBISHI ELECTRIC CORP
发明人： YORITA MITSUMASA
IPC分类号： H01H9/40 , H01H33/66
摘要： PURPOSE:To improve the breaking performance by disposing a contact part, a taper part, and a radial or spiral slit at a first electrode, and providing a second electrode of which inner circumferential part is higher than an outer circumferential part of the first electrode, becoming higher gradually toward an outer circumferential part so as to speed up arc movement to the first and the second electrode. CONSTITUTION:A current flowing to an electrode 15 is throttled to one blade by a radial slit when an arc 31 is generated from a first electrode 15 having the radial slit, for example, so electromagnetic force applied to the arc 31 is increased to drive the arc 31 outward in the radial direction speedily. The arc 31 reaching an outer circumferential part of the electrode 15 is thus set to be easy to get in contact with a second electrode 14. Because a current flowing from a movable electrode rod 22 and a fixed electrode rod 21 flows through diagonal slits provided in a fixed electrode table 5 and a movable electrode table 8 to the electrode 14, an electromagnetic force is applied to the arc 31 to drive it forward, and the arc 31 rotates at a high speed to break the current.

85. 发明专利

JPH0577731B2 失效
公开(公告)号：JPH0577731B2
公开(公告)日：1993-10-27
申请号：JP24766188
申请日：1988-09-29
申请人： MITSUBISHI ELECTRIC CORP
发明人： YAMANAKA TAKASHI , TAKEYA YASUSHI , YORITA MITSUMASA , HORIUCHI TOSHIAKI , INAGAKI KOICHI , NAYA EIZO , IZUMI MICHINOSUKE , OKUMURA MITSUHIRO
IPC分类号： H01H33/66 , C22C9/00 , C22C9/06 , H01H1/02
摘要： An electrode composition for a vacuum switch comprises copper, as a principal ingredient, a low melting point metal such as Bi, Pb, In, Li, Sn or any of their alloys, in a content not exceeding 20% by weight, a first additional metal such as Te, Sb, La, Mg or any of their alloys up to 10% by weight, and optionally a refractory metal such as Cr, Fe, Co, Ni, Ti, W or any of their alloys in a content less than 40% by weight.

86. 发明专利

JPH01111832A ELECTRODE MATERIAL FOR VACUUM SWITCH 失效
公开(公告)号：JPH01111832A
公开(公告)日：1989-04-28
申请号：JP24766188
申请日：1988-09-29
申请人： MITSUBISHI ELECTRIC CORP
发明人： YAMANAKA TAKASHI , TAKEYA YASUSHI , YORITA MITSUMASA , HORIUCHI TOSHIAKI , INAGAKI KOICHI , NAYA EIZO , IZUMI MICHINOSUKE , OKUMURA MITSUHIRO
IPC分类号： H01H33/66 , C22C9/00 , C22C9/06 , H01H1/02
摘要： PURPOSE:To obtain the above material having low cut-off current characteristics by mixing specific amounts of low melting point primary metals, specific secondary ones and third ones to Cu in the powdery state, subjecting the mixture to pressurizing and molding and thereafter sintering it in a hydrogen atmosphere. CONSTITUTION:At least one kind of pressure, is molded and sintered at about 1000 deg.C in the atmosphere of high purity hydrogen gas. The above material having excellent low cut-off current characteristics can be obtd.

87. 发明专利

JPS63205020A MANUFACTURE OF VACUUM SWITCH TUBE INSULATING CONTAINER 失效
公开(公告)号：JPS63205020A
公开(公告)日：1988-08-24
申请号：JP3877187
申请日：1987-02-20
申请人： MITSUBISHI ELECTRIC CORP
发明人： FUJII HARUHISA , ECCHU MASAO , YORITA MITSUMASA , SHIBUYA GIICHI
IPC分类号： H01H33/66

88. 发明专利

JPS6340004B2 失效
公开(公告)号：JPS6340004B2
公开(公告)日：1988-08-09
申请号：JP8842883
申请日：1983-05-18
申请人： MITSUBISHI ELECTRIC CORP
发明人： OKUMURA MITSUHIRO , NAYA EIZO , YORITA MITSUMASA , TAKEYA YASUSHI
IPC分类号： H01H33/66 , C22C9/00 , H01H1/02

89. 发明专利

JPS6394517A VACUUM BREAKER 失效
公开(公告)号：JPS6394517A
公开(公告)日：1988-04-25
申请号：JP23957786
申请日：1986-10-07
申请人： MITSUBISHI ELECTRIC CORP
发明人： YORITA MITSUMASA
IPC分类号： H01H33/66

90. 发明专利

JPS6386212A VACUUM BREAKER 失效
公开(公告)号：JPS6386212A
公开(公告)日：1988-04-16
申请号：JP23203886
申请日：1986-09-29
申请人： MITSUBISHI ELECTRIC CORP
发明人： YORITA MITSUMASA
IPC分类号： H01H33/66 , H01H1/66 , H01H33/662

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