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31. 发明专利

DE69128841T2 未知
公开(公告)号：DE69128841T2
公开(公告)日：1998-09-03
申请号：DE69128841
申请日：1991-09-10
申请人： HITACHI LTD
发明人： KOYANAGI OSAMU , HIRASAWA KUNIO , TSUKUSHI MASANORI , KUROSAWA YUKIO , SATO TADASHI , OSHITA YOUICHI
IPC分类号： H01H33/34 , H01H33/56
摘要： A switching mechanism for use e.g. in a circuit breaker of an underground electric substation has a movable rod (10a) which causes opening and closing of an electrical contact (5, 6) and a hydraulic operating system (9, 11, 12, 13, 14). The hydraulic operating system (9, 11, 12, 13, 14) uses a hydraulic fluid which has a high flammability temperature or is incombustible. Thus, even if such fluid leaks from the hydraulic operating system (9, 11, 12, 13, 14), the risk of fire or explosion is minimised. The hydraulic operating system (9, 11, 12, 13, 14) may have a sealed tank (15) for the fluid, preferably with a variable volume expansion chamber (24). In a further development, the hydraulic operating system (9, 11, 12, 13, 14), and possibly parts of the movable rod (10a), is enclosed in a casing (39, 44) which is sealed and is filled with a gas which does not support combustion therein. Thus, the risk of fire or explosion is further reduced. The casing (39) may have a variable volume expansion chamber (51).

32. 发明专利

DE69128841D1 未知
公开(公告)号：DE69128841D1
公开(公告)日：1998-03-05
申请号：DE69128841
申请日：1991-09-10
申请人： HITACHI LTD
发明人： KOYANAGI OSAMU , HIRASAWA KUNIO , TSUKUSHI MASANORI , KUROSAWA YUKIO , SATO TADASHI , OSHITA YOUICHI
IPC分类号： H01H33/34 , H01H33/56
摘要： A switching mechanism for use e.g. in a circuit breaker of an underground electric substation has a movable rod (10a) which causes opening and closing of an electrical contact (5, 6) and a hydraulic operating system (9, 11, 12, 13, 14). The hydraulic operating system (9, 11, 12, 13, 14) uses a hydraulic fluid which has a high flammability temperature or is incombustible. Thus, even if such fluid leaks from the hydraulic operating system (9, 11, 12, 13, 14), the risk of fire or explosion is minimised. The hydraulic operating system (9, 11, 12, 13, 14) may have a sealed tank (15) for the fluid, preferably with a variable volume expansion chamber (24). In a further development, the hydraulic operating system (9, 11, 12, 13, 14), and possibly parts of the movable rod (10a), is enclosed in a casing (39, 44) which is sealed and is filled with a gas which does not support combustion therein. Thus, the risk of fire or explosion is further reduced. The casing (39) may have a variable volume expansion chamber (51).

33. 发明专利

DE3883824T2 未知
公开(公告)号：DE3883824T2
公开(公告)日：1994-03-17
申请号：DE3883824
申请日：1988-04-08
申请人： HITACHI LTD
发明人： HAKAMATA YOSHIMI , NATSUI KEN-ICHI , KUROSAWA YUKIO , SATO TADASHI , KOJIMA HIROAKI , OHNO YASUNORI , KUROSAWA TOMOE
IPC分类号： H01J37/32
摘要： An apparatus for generating plasma by making use of electron cyclotron resonance employs permanent magnets (65) for forming magnetic fields, and the permanent magnets are arranged in such a manner as to form stronger magnetic fields in peripheral portion of a plasma chamber (51) than in a central portion of the same. Furthermore, electrons are introduced into an additional plasma chamber (52) in which an electric field is not applied so as to generate low-temperature plasma.

34. 发明专利

DE3883824D1 未知
公开(公告)号：DE3883824D1
公开(公告)日：1993-10-14
申请号：DE3883824
申请日：1988-04-08
申请人： HITACHI LTD
发明人： HAKAMATA YOSHIMI , NATSUI KEN-ICHI , KUROSAWA YUKIO , SATO TADASHI , KOJIMA HIROAKI , OHNO YASUNORI , KUROSAWA TOMOE
IPC分类号： H01J37/32
摘要： An apparatus for generating plasma by making use of electron cyclotron resonance employs permanent magnets (65) for forming magnetic fields, and the permanent magnets are arranged in such a manner as to form stronger magnetic fields in peripheral portion of a plasma chamber (51) than in a central portion of the same. Furthermore, electrons are introduced into an additional plasma chamber (52) in which an electric field is not applied so as to generate low-temperature plasma.

35. 发明专利

DE3586239D1 未知
公开(公告)号：DE3586239D1
公开(公告)日：1992-07-23
申请号：DE3586239
申请日：1985-12-09
申请人： HITACHI LTD
发明人： OHNO YASUNORI , KUROSAWA TOMOE , SATO TADASHI , OHSHITA YOUICHI
IPC分类号： H01J37/08 , B66C1/22 , B66C1/34 , B66C1/36 , B66C1/38 , H01J27/08 , H01J37/32 , H01L21/302 , H05H1/11 , H05H1/46

36. 发明专利

JP2002291032A MOBILE PHONE SERVICE SYSTEM 失效
公开(公告)号：JP2002291032A
公开(公告)日：2002-10-04
申请号：JP2001084016
申请日：2001-03-23
申请人： HITACHI LTD
发明人： YAMAZOE TAKANORI , SATO TADASHI
IPC分类号： H04M15/00 , H04M3/00 , H04W8/26 , H04Q7/38
摘要： PROBLEM TO BE SOLVED: To provide a cost reduction system for a user making a group contract of a plurality of mobile phones. SOLUTION: The mobile phone service system is built up where one telephone number line is contracted by a group such as a family, a branch number or the like is provided to each terminal, each terminal is distinguished from each other and each terminal can make transmission reception. A plurality of terminals have one telephone number, the user makes a one-line contract and the user can reduce the base charge to be paid for.

37. 发明专利

JP2002089479A SUCTION WATER TANK FOR VERTICAL SHAFT PUMP 失效
公开(公告)号：JP2002089479A
公开(公告)日：2002-03-27
申请号：JP2000273978
申请日：2000-09-08
申请人： HITACHI LTD
发明人： NAGAHARA TAKAHIDE , SATO TADASHI
IPC分类号： E03F5/22 , F04D13/00 , F04D29/54 , F04D29/66 , F15D1/02
摘要： PROBLEM TO BE SOLVED: To prevent generation of a top part underwater vortex and to prevent vibration and noise of a vertical shaft pump, in a suction water tank of the vertical shaft pump. SOLUTION: This suction water tank 20 for the vertical shaft pump leading water into a pump suction pipe 6 open downward has a nearly conical structure 22 disposed below the pipe 6; a nearly cylindrical water tank part 17 forming a nearly annular flow passage 16 around the nearly conical structure 22; and a straitening restriction conduit part 19 having a flow passage area which is reduced toward the downstream side from the upstream side, for generating a swirl flow 18 along the flow passage 16. A recessed communication structure for communicating a top discharge hole 24 bored in a top part with at least one inflow hole 23 bored in a lower part of the nearly conical structure 22 is formed inside the nearly conical structure 22.

38. 发明专利

JP2001125199A PROJECTION TYPE DISPLAY SYSTEM, PROJECTION UNIT USED THEREIN AND LAMP SWITCHING DEVICE FOR PROJECTOR 失效
公开(公告)号：JP2001125199A
公开(公告)日：2001-05-11
申请号：JP30956699
申请日：1999-10-29
申请人： HITACHI LTD , HITACHI VIDEO & INF SYST
发明人： NAKAO MITSUYA , YABE AKIO , SATO TADASHI , TANAKA KEIICHIRO , KANBARA TAKASHI
IPC分类号： G02F1/13 , G02F1/1333 , G03B21/14
摘要： PROBLEM TO BE SOLVED: To miniaturize a lamp switching device for a projector. SOLUTION: This system is equipped with a moving frame 10 holding two lamps 2a and 2b side by side on a line, a slide guide 6 supporting the frame 10 movably in a direction 2d where the lamps are arranged side by side on a line, a lamp moving motor 9 moving the frame 10, an ammeter 43 detecting the turn-off of the lamp 2a positioned at a projection feasible position, and a lamp switching control unit 41 driving the motor 9 when the turn-off of the lamp 2a is detected by the ammeter 43.

39. 发明专利

JP2001033599A CHARGED PARTICLE BEAM-IRRADIATING DEVICE 失效
公开(公告)号：JP2001033599A
公开(公告)日：2001-02-09
申请号：JP20866699
申请日：1999-07-23
申请人： HITACHI LTD
发明人： TAKEUCHI KAZUHIRO , KAWAKUBO YUKIO , SATO TADASHI
IPC分类号： H01J37/301 , G21K5/00 , G21K5/04
摘要： PROBLEM TO BE SOLVED: To suppress the melting of an opening for suppressing the enlargement of an opening diameter and to suppress the load of a differential exhaust system by providing cooling structure at the opening of the partition between the acceleration chamber and the irradiation chamber of charged particle beams for lowering temperature. SOLUTION: For example, in the electron beam-irradiating device used for manufacturing a semiconductor, for example, a cooling pipe 10 is provided while adhering to an opening 5 by a support tool 11 for cooling the surrounding of the beam opening 5 and is guided to a cooling device 12 for circulating and cooling a refrigerant, thus decreasing the temperature of the opening 5, for example, to approximately 1,300 deg.C for preventing the melting of a partition and avoiding the increase in the load of a differential exhaust device 9. Temperature is measured by emission of light near the opening 5, and the flow rate of the refrigerant of the cooling device 12 is controlled. Also, a fin may be welded to the opening 5, for example copper with a high thermal conductivity may be welded to a material such as titanium near the opening 5, and coating thickness near the opening 5 may be changed according to a specified form.

40. 发明专利

JPH11311195A MOTOR-DRIVEN COMPRESSOR 失效
公开(公告)号：JPH11311195A
公开(公告)日：1999-11-09
申请号：JP11688798
申请日：1998-04-27
申请人： HITACHI LTD
发明人： KUWABARA TOKIMITSU , SATO TADASHI
IPC分类号： F04D15/00 , F04D13/00
摘要： PROBLEM TO BE SOLVED: To ensure a stable flow control with an inexpensive constitution through the control of rotational frequency in an axial flow pump and a swash flow pump with an unstable region. SOLUTION: According to a difference between the level of discharge water and the level of suction water, that is, an actual head and a target flow amount, a total head is obtained, and according to the same and the target flow amount, the rotational frequency of a pump 4 is obtained. When an oscillation amount detected by an oscillation meter 12 is at a specified value or more, the obtained frequency is changed to control the oscillation amount to be the specified value or less. The control method is implemented with a simple construction inexpensively rather than a vane angle control and ensure a stable flow control.

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