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1. 发明专利

JPH10261305A LAMP LIGHTING DEVICE 失效
公开(公告)号：JPH10261305A
公开(公告)日：1998-09-29
申请号：JP6693897
申请日：1997-03-19
申请人： TOKYO METROPOLITAN GOV , YEC KK
发明人： TAKAHASHI SHIGEO , SUZUKI HARUHIRO , MUSASHIJIMA SHINJI
IPC分类号： F21S9/00 , F21Y101/00 , F21M5/00
摘要： PROBLEM TO BE SOLVED: To prevent a voltage drop in the projector of a lamp lighting device at smaller cost while causing no increase in weight of the projector. SOLUTION: A lamp lighting device 1 feeds power from its power source to its projector 4 through a connection cable 3 to switch on a lamp 22 arranged in the projector 4. The power source is provided with a constant-current control part 40 to feed constant voltage to the lamp 22. The control part 40 comprises a chopper constant-current circuit 41 for feeding constant current to the cable 3, a current detection circuit 42 for detecting current flowing in the cable 3, and a control circuit 43 for controlling the constant-current circuit 41 on the basis of the detected current.

2. 发明专利

JPH08113176A FOUR WHEEL DOLLY 失效
公开(公告)号：JPH08113176A
公开(公告)日：1996-05-07
申请号：JP27608094
申请日：1994-10-15
申请人： YEC KK , TOKYO METROPOLITAN GOV
发明人： TAKAHASHI SHIGEO , YAMADA MASATOSHI
IPC分类号： A62C27/00 , B62K21/12 , B62K5/00
摘要： PURPOSE: To secure the space of a load carrying platform and the lowest ground clearance for a space between driving wheels by disposing a driving means above the axle axial center of each driving wheel, disposing a slide frame in a housed condition below the above-mentioned drive means in a space for an axle between the paired right and left driving wheels, and thereby letting the upper surface of the slide frame be positioned above the axle axial center of each driving wheel. CONSTITUTION: A body frame 2 is made up of a frame main body 3, and of a slide frame 4, and the slide frame 4 is made freely movable in the longitudinal direction with respect to the frame main body 3 between a housing position and a draw-out position. And the power of a motor 64 as a drive means is transmitted to the driving wheels 5 by way of a driving shaft 62, a gear box 60, and an axle 61 through a differential gear 63 acting as a power transmitting means. The slide frame 4 in a housing condition is disposed in a space for the axle 61 between the driving wheels 5 down below the motor 64, and let its upper surface be positioned above the axle 61. As a result, the lowest ground clearance for a space for the axle 61 can be assured, and a load carrying platform as one flat surface can thereby be sufficiently assured with the load carrying platform kept low in height.

3. 发明专利

JPH09295580A LOADING GOODS LOADING DEVICE FOR SPECIAL PURPOSE CARRYING TRUCK 失效
公开(公告)号：JPH09295580A
公开(公告)日：1997-11-18
申请号：JP13426896
申请日：1996-04-30
申请人： TOKYO METROPOLITAN GOV , YEC KK
发明人： TAKAHASHI SHIGEO , SUZUKI HARUHIRO
IPC分类号： B62B3/04
摘要： PROBLEM TO BE SOLVED: To fix plural goods to be loaded in a flat state without projection by engaging a locking projecting part of first loading goods with a locking recessed part of the loading surface of a truck to be fixed to the truck, and then locking the other loading goods on the first loading goods to be similarly fixed to the truck. SOLUTION: In the case of loading a truck 10 with a first loading box 20 for storing a hose, first the loading box 20 is placed on a placing surface S, and the front surface thereof is brought into contact with a control box 14. At this time, projecting pieces 24... of the loading box 20 are fitted in the inside locking recessed parts of the frame 141 of the control box 14 to be locked, and in such a condition, a bolt 252 is screw- engaged with a nut fixed to the truck frame 11. Subsequently, in the case of loading two second loading boxes 30 for storing nozzles or the like, the respective loading boxes 30 are placed on both side end parts of the placing surface S, and the front surfaces thereof are brought into contact with the loading box 20. At this time, the projecting pieces 34... of the loading boxes 30 are fitted in the inside part of the frame 21 of the loading box 20 to be locked, and similarly fixed by the screw- engagement of a bolt 352.

4. 发明专利

JPH07286600A SHAFT SEAL DEVICE FOR PUMP FOR FIRE ENGINE 失效
公开(公告)号：JPH07286600A
公开(公告)日：1995-10-31
申请号：JP10151394
申请日：1994-04-15
申请人： NIPPON KIKAI KOGYO , TOKYO METROPOLITAN GOV
发明人： TAKAHASHI SHIGEO , NAKAJIMA HATSUHIKO
IPC分类号： A62C27/00 , F04D29/08
摘要： PURPOSE:To prevent abrasion or breakage of a shaft seal device by overheat by cooling lubrication liquid in an inner side circular chamber of a shaft seal chamber by part of discharged water during water discharge operation of a pump. CONSTITUTION:A branch tube 30 communicated with a secondary water passage 9 is installed on a lower end of a pump housing 8, and a drain 10 is connected to a lower end of the branch tube 30. Next, an aperture 31 communicated with an outer side circular chamber 20 is provided in a shaft seal cylinder 14, a branch port 30' of the branch tube 30 and the aperture 31 are connected to each other by pipings 32, secondary pressure water supplied through a primary impeller 1 of a pump, a primary water passage 23, a secondary impeller 2, and a secondary water passage 9 is introduced through the branch tube 30 and pipings 32 to an outer side circular chamber 20 to cool the shaft seal cylinder 14, and after cooling, it is sent to the primary water passage 23.

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