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1. 发明专利

GB8500174D0 REGENERATING MAN CONVEYOR HANDRAIL 未知
公开(公告)号：GB8500174D0
公开(公告)日：1985-02-13
申请号：GB8500174
申请日：1985-01-04
申请人： HITACHI ELEVATOR ENG & SERVICE
IPC分类号： B66B31/02 , B05D3/10 , B05D3/12 , B05D5/00 , B05D5/06 , B05D7/02 , B05D7/24 , C23F3/00
摘要： The color and luster of a man conveyor handrail can be restored by mechanically grinding the surface of the handrail, degreasing the thus-ground surface of the handrail with a low-solubility solvent, and then coating a solution, which contains a room-temperature curable silicone resin containing methoxy groups and an organic solvent having a kauri-butanol value smaller than 100, onto the thus-degreased surface of the handrail. The process of this invention permits the operation of a man conveyor with handrails which always have a color and luster similar to fresh handrails without need for substantial increase to its running cost.

2. 发明专利

GB8809931D0 MAGNETIC TREATER 未知
公开(公告)号：GB8809931D0
公开(公告)日：1988-06-02
申请号：GB8809931
申请日：1988-04-27
申请人： HITACHI ELEVATOR ENG & SERVICE
IPC分类号： C02F1/46 , C02F1/48
摘要： Disclosed herein is a magnetic treated suitable for arrangement in a flow path of a fluid so as to introduce the fluid into a magnetic field to perform its magnetic treatment. The magnetic treater includes a magnetically-acting member having at least two magnetically-acting surfaces magnetized in opposite polarities and maintained opposite to each other at a predetermined interval via an interval-limiting means, a fluid inlet, a fluid outlet, and a casing. The casing is provided with the fluid inlet and fluid outlet and encloses the magnetically-acting member in such a way that at least spacing between the magnetically-acting surfaces is in communication with the fluid inlet and fluid outlet and serves as a flow passage for the fluid. As the magnetically-acting member, stacked permanent magnets or a combination of a permanent magnet and magnetic pole plates connected to and magnetized by the permanent magnet may be chosen.

3. 发明专利

GB8826606D0 CONTROLLING DEVICE FOR PERMANENT MAGNET SYNCHRONOUS MOTOR 未知
公开(公告)号：GB8826606D0
公开(公告)日：1988-12-21
申请号：GB8826606
申请日：1988-11-14
申请人： HITACHI ELEVATOR ENG & SERVICE
IPC分类号： H02P27/06 , B66B1/28 , H02P21/00 , H02P21/22 , H02P23/16 , H02P23/18 , H02P25/02 , H02P25/026 , H02P27/04 , H02P6/00
摘要： A controlling device for a permanent magnet synchronous motor wherein a permanent magnet is used as a rotor and which includes three-phase armature windings comprises a detecting means for detecting a rotational position and a rotational angle of said rotor, a comparison means for comparing the rotational speed detected by said cetecting means with a predetermined reference speed and for developing a value of a difference between the rotational speed and the reference speed, a converting means for determining currents to be supplied individually to said armature windings in response to a vector value obtained from the rotational position detected by said detecting means and the value of the difference delivered from said comparison means, and a current controlling means for controlling current flows through said individual armature windings in response to values obtained by said converting means.

4. 发明专利

GB8506274D0 SUPERVISORY OPERATION CONTROL SYSTEM 未知
公开(公告)号：GB8506274D0
公开(公告)日：1985-04-11
申请号：GB8506274
申请日：1985-03-11
申请人： HITACHI ELEVATOR ENG & SERVICE , HITACHI LTD
IPC分类号： B66B5/02 , G01V1/00 , G08B21/02 , G08B21/10
摘要： A supervisory operation control system responds to detection of vibration occurring at a predetermined location of an equipment for causing the equipment susceptible to adverse influence of the vibration to perform a predetermined supervisory operation. Transition to the supervisory operation is enabled when a product of speed and displacement of the vibration exceeds a predetermined value.

6. 发明专利

JP2513792B2 失效
公开(公告)号：JP2513792B2
公开(公告)日：1996-07-03
申请号：JP17273688
申请日：1988-07-13
申请人： HITACHI ELEVATOR ENG & SERVICE
发明人： NOKITA AKIHIRO , ANDO TAKEYOSHI , KUROSAWA TOSHIAKI , INABA HIROMI , TAKAHASHI HIDEAKI
IPC分类号： B66B1/30

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