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21. 发明专利

JPH0618379A JIG FOR NOTCHED SAMPLE PIECE PRODUCING LASER 失效
公开(公告)号：JPH0618379A
公开(公告)日：1994-01-25
申请号：JP17290792
申请日：1992-06-30
申请人： TOKYO GAS CO LTD
发明人： AKIYAMA SHINICHI
IPC分类号： G01N1/28 , G01N1/06
摘要： PURPOSE:To simply perform the adjustment of the length and horizontality of the edge of laser and notching work by making the member having the laser attached thereto freely adjustable up and down within an adjusting space. CONSTITUTION:Laser 1 is attached to a laser attaching member 15 so as to sufficiently obtain the height on the side of an edge 1a. The member 15 is fitted in adjusting space 13 in an up-and-down freely slidable and adjustable manner by the engagement of guide grooves 14, 14a and projections 17,17a. At this time, the upper ends 27,27a of notch depth adjusting screws 23, 23a are brought into contact with the under surface of the member 15 to support the member 15 from below. Next, a laser fixing member 18 is attached to a stepped part by screws 20, 20a and the pressure surface 18a thereof presses the laser to a pressure contact surface 10a. At this time, the protruding length of the edge 1a from adjusting surfaces 11, 19 is adjusted by the adjusting screws 23, 23a after the member 18 is once loosened and the edge la is again fixed by the member 18. As a result, by pressing a sample piece to the edge 1a, a notch having the depth corresponding to the protruding quantity of the edge 1a from the adjusting surfaces 11, 19 can be formed.

22. 发明专利

JP2002347120A CHECKING RESISTOR DEVICE AND POWER SUPPLY CONTROL DEVICE 失效
公开(公告)号：JP2002347120A
公开(公告)日：2002-12-04
申请号：JP2001153133
申请日：2001-05-22
申请人： TOKYO GAS CO LTD , HITACHI METALS LTD
发明人： AKIYAMA SHINICHI , MINAMI TOMOYUKI , YOSHII TAKAAKI , INOUE YASUYUKI
IPC分类号： F16L47/02 , B29C65/34 , B29L23/00
摘要： PROBLEM TO BE SOLVED: To provide a checking resistor device capable of detecting electric failures at an adapter terminal means or the like. SOLUTION: In the checking resistance device used in the power supply control device, the adapter input terminals 46 of the adapter terminal means 19 are connected to the tip end terminals 18 of the two output cables 16 of the power supply control device, and the adapter input terminals of the adapter terminal means are connected to the input terminals 8 of resin joints 4 having a built in heating heater 6 therein to be soldered to a resin pipe member. The device is provided with the two checking terminals 56 to be detachably attached either to the tip end terminals of the two output cables or to the adapter output terminals, and the reference resistors 58 connected between the two checking terminals. In this way, electric failures at the adapter terminal means or the like are detected.

23. 发明专利

JP2002206686A BRANCH DERIVING JOINT 审中-公开
公开(公告)号：JP2002206686A
公开(公告)日：2002-07-26
申请号：JP2001240004
申请日：2001-08-08
申请人： HITACHI METALS LTD , TOKYO GAS CO LTD
发明人： AKIYAMA SHINICHI , YOSHII TAKAAKI , KATO KAZUMI , MIZUTANI SHIGERU , AOKI SHINJI
IPC分类号： B26F1/32 , F16L41/06
摘要： PROBLEM TO BE SOLVED: To solve the problem wherein a joint is so large-size that a borer D, an opening and closing cutoff device C, and a stopper plug mounting machine F are needed and a work process is complicated, normal boring is difficult, a large rigidity is needed, and when a large flow is branched and derived, a hole saw becomes large so that the whole joint becomes a large size. SOLUTION: This branch deriving joint is formed by a saddle part 11 connected to the surface of a main pipe, and a joint main body formed by a branch pipe part 12 branching off the saddle part intersecting the axis of the main pipe and a bored pipe part 13 provided in a space up to the branch pipe part at an angle of 40 to 50 degrees relative to the axis of the main pipe. An elliptical hole is bored in the surface of the main pipe by the hole saw in the bored pipe part to perform branch deriving. The inside diameter of the branch pipe part 12 substantially approximates the inside diameter of the main pipe 20, and the hole saw having the outside diameter h 75 to 90% of the inside diameter d of the main pipe is used to bore an elliptical hole in the surface of the main pipe to perform the branch deriving.

24. 发明专利

JP2000266276A REPAIR WORK METHOD FOR ANTICORROSION TREATED PIPELINE 失效
公开(公告)号：JP2000266276A
公开(公告)日：2000-09-26
申请号：JP6793299
申请日：1999-03-15
申请人： TOKYO GAS CO LTD
发明人： AKIYAMA SHINICHI
IPC分类号： E03F7/00 , F16L55/16
摘要： PROBLEM TO BE SOLVED: To provide a repair work method which can easily and properly repair a separating and defective part while incidental work of excavating work or the like is reduced. SOLUTION: This repair work method, aiming at a coating layer 1A of a metal pipe 1 buried in the ground to be formed with the corrosion-proof coating layer 1A in an external surface, has at least a washing process washing in the vicinity of a damaged position 1B like a separating part or defective part generated in the coating layer 1A and a fusion process integrally fusing the total region of the damaged position 1B and its periphery in a condition that a sheet material 2, having a thickness equivalent to or larger than the coating layer 1A to be formed in a size capable of covering a total region of the damaged position and affinity to the coating layer 1A, is held to the damaged position 1B.

25. 发明专利

JP2000161578A PIPE CONNECTING METHOD 失效
公开(公告)号：JP2000161578A
公开(公告)日：2000-06-16
申请号：JP33712098
申请日：1998-11-27
申请人： TOKYO GAS CO LTD
发明人： AKIYAMA SHINICHI , YOSHII TAKAO
IPC分类号： F16L43/00 , F16L1/024 , F16L47/02
摘要： PROBLEM TO BE SOLVED: To provide a connecting method for a pipe reducing the working cost in connecting the pipe having a curved part in the midway to the laying direction. SOLUTION: This pipe connecting method for a pipe having a curved part in the midway of a polyethylene pipe laid under the ground is that a joint member 1 inserting the ends of polyethylene pipes A, B or the objects to be connected in the inside is arranged in a part corresponding to the curved part; heat generating sources 2, 3 corresponding to a melting region 1A melt with respective ends of the polyethylene pipes A, B and a bent region 1B provided in a space toward the melting region 1A and having different heat generating state from the melting region 1A are arranged in the joint member 1; the melting region 1A of the joint member 1 is set to such a temperature as melting the ends of the polyethylene pipes A, B with each other and the bent region 1B is set to such a softening temperature as bending the polyethylene pipe B so that it is characterized that the region 1B can be bent.

26. 发明专利

JP2000161533A PIPE LINE SHUTOFF CONSTRUCTION METHOD 失效
公开(公告)号：JP2000161533A
公开(公告)日：2000-06-16
申请号：JP33711998
申请日：1998-11-27
申请人： TOKYO GAS CO LTD
发明人： AKIYAMA SHINICHI , YOSHII TAKAO
IPC分类号： F16L1/00
摘要： PROBLEM TO BE SOLVED: To provide a pipe line shutoff construction method which does not require exaggerared equipment for crushing part of the pipe line and shutting it off, and can do workable crushing. SOLUTION: In this pipe line shutoff construction method which shuts off fluid by crushing one part in the laid direction of the pipe line inside which the fluid such as gas is flowed, a pressurizing means 1 for pressurizing from the relative position of the pipe line periphery is installed on the shutoff position in the pipe line A and in the pressurizing means 1, a heat source 3 abutting or approaching the outer periphery of the pipe line is provided on the hold part 2 contacted to the outer periphery of the pipe line and prior to the pressurizing of the pipe line A, the hold part 2 of the pressurizing means 1 is made to abut the periphery of the pipe line and the pipe line A is pressurized after increasing the temperature of the pipe line A.

27. 发明专利

JP2002295724A REMOVING METHOD FOR RESIN MADE BRANCH PIPE 失效
公开(公告)号：JP2002295724A
公开(公告)日：2002-10-09
申请号：JP2001102989
申请日：2001-04-02
申请人： TOKYO GAS CO LTD
发明人： AKIYAMA SHINICHI , YOSHII TAKAAKI
IPC分类号： F16L1/00
摘要： PROBLEM TO BE SOLVED: To provide a removing method for a resin made branch pipe capable of reducing the risk of damaging a remaining branch pipe in the other engineering works after removing the branch pipe. SOLUTION: In a first stage, a cutter 106 stored in the upper part 105a of a service T 105 is inserted into a tapping hole 101a opened in a side wall of an original pipe 101. In a second stage, the root of the upper part 105a of the service T 105 is cut upside the cutter 106, and then the upper part 105a and a branch part 105c of the service T 105, and the branch pipe 103 connected to this via a socket 111 are removed. In a third state, a no-blow gas bag 10 is mounted to the upper root 105a' of the service T 105, the cutter 106 is removed in it, and then a temporary plug 11 is mounted into a tapping hole 101a. In a forth stage, a regular closing plug 15 is fused with the tapping hole 101a using a closing tool 20.

28. 发明专利

JP2002013691A METHOD AND DEVICE FOR EFFECTING EMERGENCY REPAIR OF RESIN PIPE 失效
公开(公告)号：JP2002013691A
公开(公告)日：2002-01-18
申请号：JP2000194597
申请日：2000-06-28
申请人： TOKYO GAS CO LTD
发明人： AKIYAMA SHINICHI , YOSHII TAKAAKI
IPC分类号： F16L55/16
摘要： PROBLEM TO BE SOLVED: To surely close the damaged opening part of a resin pipe and quantify the amount of closing material used in the same kinds of resin pipes. SOLUTION: A method for effecting emergency repair of a resin pipe comprises a process, where a flexible hose 9 connected to an extrusion port 8 of a molten resin extruding device 1 is inserted in a damaged opening part B of the resin pipe A; a process where molten resin 10 extruded from the molten resin extruding device 1 is fed in the resin pipe A through the flexible hose 9; and a process where the damaged opening part B of the resin pipe A is closed through filling with the molten resin 10 fed in the resin pipe A.

29. 发明专利

JP2000310356A PIPE LINE REPAIR METHOD AND DEVICE USING THEREFOR 失效
公开(公告)号：JP2000310356A
公开(公告)日：2000-11-07
申请号：JP12141999
申请日：1999-04-28
申请人： TOKYO GAS CO LTD
发明人： AKIYAMA SHINICHI , YOSHII TAKAAKI
IPC分类号： F16L1/024
摘要： PROBLEM TO BE SOLVED: To prevent increase in working man-hour and a working period, and also to certainly prevent gas leakage after recovering. SOLUTION: This method repairs a broken part 1A produced in a part of a synthetic resin conduit 1 laid in the ground. In this case, only a part matched to the broken part 1A is excavated. A joint 2 which can enclose the inner and outer parts of the synthetic resin conduit 1 is arranged under condition that the broken part 1A is covered with the joint 2 and the joint 2 is tightly stuck to the peripheral surface of the synthetic resin conduit 1 on an outer side than the periphery of the broken part 1A, and the peripheral surface of the synthetic resin conduit 1 and the joint 2 are fused together by exothermic action generated by carrying electric current to the joint 2.

30. 发明专利

JP2000283370A ELECTROFUSION-TYPE SADDLE JOINT AND MANUFACTURE OF THE SAME 失效
公开(公告)号：JP2000283370A
公开(公告)日：2000-10-13
申请号：JP8864199
申请日：1999-03-30
申请人： HITACHI METALS LTD , TOKYO GAS CO LTD
发明人： AKIYAMA SHINICHI , MINAMI TOMOYUKI , MIZUKAMI SEIJI , AOKI SHINJI
IPC分类号： F16L41/06 , F16L47/02
摘要： PROBLEM TO BE SOLVED: To simplify a service tee for special pipe by correcting a saddle part of an electrofusion-type saddle joint molded for a connection pipe, by remolding the saddle part corresponding to an outer surface of another connection pipe having a small diameter within a predetermined ratio with respect to an outer diameter of the connection pipe. SOLUTION: A piercing tool 10 is screwed to a central part of an electrofusion-type service tee, a spigot part 4 is perpendicularly branched from an approximately cylindrical barrel part 2 comprising a screw 20 for movement forward and backward, and a saddle part 3 is formed over a pipe to be connected. This saddle part is corrected by remolding the same corresponding to an outer surface of another connection pipe B having a small diameter within 30% with respect to an outer diameter of a connection pipe A. A heating wire 7 is spirally buried in a bottom inner peripheral surface of the saddle part 3 to provide an electrofusion-type joint connected to the connector pins 8 at both ends.

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