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1. 发明专利

JPH1154974A ELECTRIC DEVICE 失效
公开(公告)号：JPH1154974A
公开(公告)日：1999-02-26
申请号：JP20482997
申请日：1997-07-30
申请人： HITACHI LTD , HITACHI KEIYO ENG
发明人： HIROTA MASAYUKI , TOKASHIKI MUTSUO , IBORI SATOSHI , TAKADA NAOKI , ISHII SATOKO , KITAZAWA KEIJI
IPC分类号： H05K7/20 , H02M1/06 , H02M7/04 , H02M7/12 , H02M7/48
摘要： PROBLEM TO BE SOLVED: To fully realize miniaturization and cost reduction, by providing a space part of a specified width between an outlet side of an air flow direction of a radiation fin whereon an electric component which requires cooling is mounted and a fan, and by arranging an electric component which requires cooling which is different from that of the electric component. SOLUTION: Each air flow direction of a plurality of heat radiation fins 2 is made to coincide with an air flow direction by each electromotive fan 4, and they are assembled in an arrangement on a straight line, and an air chamber 6 as a space part is ensured between the fins 2 and the electromotive fan. A path of air for introducing air from an outside to a part wherein a snubber resistor 3 is arranged through the fin 2 and for discharging it to an outside by each electromotive fan 4 is formed. Since a plurality of kinds of electric parts can be effectively cooled by a common cooling electromotive fan 4, the size of an electric component can be reduced.

2. 发明专利

JPH07179289A UPRIGHT ERECTING METHOD FOR LENGTHY MEMBER 失效
公开(公告)号：JPH07179289A
公开(公告)日：1995-07-18
申请号：JP32661893
申请日：1993-12-24
申请人： HITACHI LTD , HITACHI KASADO ENG KK
发明人： MURATA HIRONOBU , KITAZAWA KEIJI
IPC分类号： B66C13/08 , B66C13/22 , B66D1/40
摘要： PURPOSE:To carry out safe upright erecting drive of a lengthy member used as a structure by simple operation at the time of assembly work of a large structure. CONSTITUTION:A lengthy member 9 is hoisted up to the same height by a trolley 40 and a trolley 50, the hook 6 of the trolley 50 is wound up in such a sequence as A1 A2 A3, and the hook 5 of the trolley 40 is made to move traversely in such a sequence as B1 B2 B3 in accordance with the wound up amount of the trolley 50. This is a driving method to keep the height of the hoisting hook 7 of the trolley 40 constant by way of holding each of ropes in parallel and in the vertical state against the ground, etc.

3. 发明专利

JPS62105897A METHOD OF ADJUSTING LOAD DETECTOR FOR OVERHEAD CRANE 失效
公开(公告)号：JPS62105897A
公开(公告)日：1987-05-16
申请号：JP24618885
申请日：1985-11-05
申请人： HITACHI LTD , HITACHI TECHNO ENG
发明人： AIKAWA YOSHIHIKO , KITAZAWA KEIJI
IPC分类号： B66C13/16 , B66C1/22 , B66C1/40 , B66D1/58 , G01G19/14

4. 发明专利

JP2001099777A CORROSIVE ENVIRONMENT MONITORING DEVICE 失效
公开(公告)号：JP2001099777A
公开(公告)日：2001-04-13
申请号：JP2000229055
申请日：2000-07-25
申请人： HITACHI LTD
发明人： FUJII KAZUMI , OHASHI TAKEYA , HIRA YASUO , WATANABE HIROSHI , KITAZAWA KEIJI , AONO TERUYUKI , SAITO YUTAKA , TAGIRI KATSUNORI , TANJI MASAYUKI
IPC分类号： G01N17/02 , G01N5/02 , G01N29/02
摘要： PROBLEM TO BE SOLVED: To provide an atmospheric corrosive environment monitoring device capable of sequentially mounting a type of a corrosive substance, density, and an amount of corrosion of metal in the atmosphere. SOLUTION: A plurality of piezoelectric elements respectively including different metal thin films on their surfaces are arranged in an environment to be measured. Each of the piezoelectric elements having the metal thin film is made to oscillate by an oscillating circuit, and a change of frequency due to time lapse outputted from the piezoelectric element is measured. The type of the corrosive substance or corrosive gas, and the density, and/or corrosion quantity of the metal thin film in the environment are detected based on a relation between the change due to time lapse and a previously obtained change of the frequency due to time lapse in respect of the metal thin film.

5. 发明专利

JPS59221810A ALTERNATE SECTOR DEVICE IN MAGNETIC STORAGE DEVICE 失效
公开(公告)号：JPS59221810A
公开(公告)日：1984-12-13
申请号：JP9395683
申请日：1983-05-30
申请人： HITACHI LTD
发明人： KITAZAWA KEIJI , TANJI MASAYUKI
IPC分类号： G06F3/06 , G11B20/12 , G11B20/18 , G11B5/09 , G06F13/04
摘要： PURPOSE:To execute skip processing of a defective sector without causing rotation waiting of a recording medium by providing a field for showing the position of the defective sector on a discriminating information area to data, so that a control device which has read it holds it in a storing circuit. CONSTITUTION:When a sector pulse is detected by a disk state information register 90, a control device 50 reads ID information. Subsequently, defective sector position information ID0 is stored in a control table in an RAM 70, and thereafter, a readout sector number of an ID1 part is compared with a designated sector number in a microprocessor, and when both of them coincide with each other, readout/write of the following data part are starded. In case when both of them do not coincide with each other, or in case when an error is detected when reading out the ID part, the operation is shifted to read the folowing ID part, the read operation of the ID part is executed up to a three-rotation portion, ana in case when a desired sector is still undetected, the operation is discontinued. In this way, skip processing of a defective sector can be executed without causing rotation waiting of a recording medium.

6. 发明专利

JPS57143770A CYLINDER ADDRESS CONVERTER FOR DISC TYPE MAGNETIC STORAGE DEVICE 失效
公开(公告)号：JPS57143770A
公开(公告)日：1982-09-06
申请号：JP2700281
申请日：1981-02-27
申请人： HITACHI LTD
发明人： KITAZAWA KEIJI , KUWABARA HIROSHI , OONUMA KUNIHIKO , NAKAMURA KUNIO
IPC分类号： G11B27/10
摘要： PURPOSE:To decrease wear in a drive section, by providing a device that a consecutive cylinder address designated with a processor is converted into a discontinuous cylinder address to a series of cylinders on a magnetic disc of a disc drive device. CONSTITUTION:Address information transmitted from a processor enters a control device, and a selector address of addresses of the information is delivered to a magnetic disc drive device 3 via a register 11. In this case, a cylinder address converting section 17 is provided between the register 11 and a register 12. The amount of movement of a head positioning mechanism of the disc drive device 3 is increased by repeating the access operation to the cylinder to be closed addressingly, allowing to reduce a small shaking movement of bearings of the head positioning mechanism so that fretting wear of bearings can hardly take plate.

7. 发明专利

JPS5433458A SAFETY SPPARATUS FOR ROPE SUSPENTION CRANE 失效
公开(公告)号：JPS5433458A
公开(公告)日：1979-03-12
申请号：JP9791377
申请日：1977-08-17
申请人： HITACHI LTD
发明人： KITAZAWA KEIJI
IPC分类号： B66C15/02
摘要： PURPOSE:To provide safety apparatus for rope suspention crane, in which winding rope is prevented from coming off trolley to prevent load from dropping when the rope is cut, and load is safely treated without skid, swing or slant.

8. 发明专利

JPH07240853A DISPLAY DEVICE 失效
公开(公告)号：JPH07240853A
公开(公告)日：1995-09-12
申请号：JP25824392
申请日：1992-09-28
申请人： HITACHI LTD
发明人： TOMITA KIKUO , KITAZAWA KEIJI
IPC分类号： H04N3/26
摘要： PURPOSE:To attain detailed focus correction by applying an optimum grid voltage to a focus collecting grid of a CRT corresponding to a scanning position of a current electron beam attended with a change in a video signal. CONSTITUTION:The display device is provided with a focus correction circuit 200 to provide a correction signal V2 synchronously with the scanning of a beam to a focusing grid 2 and with an adjustment section 300 that provides an output of a synchronizing separator circuit 6 to give focus correction data to the focus correction circuit 200 and provides focus correction data to the focus correction circuit 200. Then a display screen of a cathode ray tube is divided into plural zones (scanning positions) roughly or densely depending on a display object by a zone division means and a correction value storage means stores the correction value for focus correction of electron beams corresponding to each of plural divided zones and the focus correction circuit 200 corrects a focus of the electron beam on the display screen of the cathode ray tube 1 based on the stored correction value.

9. 发明专利

JPS60106794A CRANE TRAVERSING FEEDER DEVICE 失效
公开(公告)号：JPS60106794A
公开(公告)日：1985-06-12
申请号：JP21395183
申请日：1983-11-16
申请人： HITACHI LTD
发明人： KITAZAWA KEIJI
IPC分类号： B66C6/00 , B66C17/00

10. 发明专利

JPS58141470A FLEXIBLE DISC DRIVING DEVICE 失效
公开(公告)号：JPS58141470A
公开(公告)日：1983-08-22
申请号：JP2351982
申请日：1982-02-18
申请人： HITACHI LTD
发明人： KITAZAWA KEIJI , NAKAMURA KUNIO
IPC分类号： G11B19/20 , G11B19/02
摘要： PURPOSE:To rotate automatically a spindle motor for attachment and detachment of a disc, and to attach and detach the disc quickly, by rotating a DC motor, where the rise speed is made high only when a door mechanism in case of opening and closing a disc attaching and detaching aperture is opened and a motor on signal is outputted from a disc controller. CONSTITUTION:The motor on signal is generated by a retriggerrable one shot circuit 18 as a motor controlling circuit, At the access time, the one shot circuit 18 is triggerred retriggerrably by the trigger signal from a disc controller 12 to generate the motor on signal, and OR between this signal and the output signal of a switch 9 is operated by an OR gate 17 to control turning-on/off of a transistor 15. That is, a DC motor 14 is rotated when the motor on signal or an output signal related to opening of a door mechanism 8 from the switch 9 is obtained in the side of a disc device 13.

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