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1. 发明专利

JPH06185681A MANUFACTURE OF CORRUGATED PIPE INCORPORATING SLEEVE 失效
公开(公告)号：JPH06185681A
公开(公告)日：1994-07-08
申请号：JP34020592
申请日：1992-12-21
申请人： MITSUBISHI PETROCHEMICAL CO , KURIMOTO LTD
发明人： NAGASE SADAO , BAN HISAYOSHI , ITO MASAHIDE , KITAGAWA MASAYOSHI , SHIOMI ICHIRO
IPC分类号： F16L11/11 , F16L33/00 , F16L33/28
摘要： PURPOSE:To provide a double wall pipe incorporating a sleeve which can increase the connecting strength of the sleeve to the double wall pipe, which can completely seal the connecting part of the sleeve to the double wall pipe, and which can facilitate the connection of the sleeve to the double wall pipe. CONSTITUTION:A high density polyethylene double wall pipe 1 in which a cylindrical outer wall formed alternately with annular crest and trough parts is fitted on a cylindrical inner wall with the trough parts being thermally welded to the latter, is fitted therein with a high density polyethylene sleeve 2 having an inner diameter substantially equal to the outer diameter of the double wall pipe 1, and molten high density polyethylene is filled in annular gaps defined between the trough parts 1a of the double wall pipe 1 and the sleeve 2 through a filling hole 2a formed in the sleeve 2 so as to fix the pipe 1 and sleeve 2.

2. 发明专利

JPH06331086A CONNECTION METHOD FOR FLUID TRANSFERRING PIPE AND BRANCH PIPE 失效
公开(公告)号：JPH06331086A
公开(公告)日：1994-11-29
申请号：JP11715493
申请日：1993-05-19
申请人： MITSUBISHI PETROCHEMICAL CO , KURIMOTO LTD
发明人： NAGASE SADAO , BAN HISAYOSHI , ITO MASAHIDE , KITAGAWA MASAYOSHI , NAKANO RYOICHI , SHIOMI ICHIRO
IPC分类号： B29C65/00 , B29C65/34 , F16L47/02
摘要： PURPOSE:To prevent occurrence of partial fusion strength in a connection part of a branch port formed on a fluid transferring pipe such as a corrugate pipe to a branched pipe. CONSTITUTION:A branch pipe 2 made of thermosetting resin is inserted into a circular branch port 1a of a corrugated pipe 1 made of thermosetting resin. Current carrying is performed to a nichrome wire previously wound around a connection part 2a of the branch pipe 2 to the branch port 1a for connecting the corrugate pipe 1 to the branch pipe 2. An outer diameter of the branch pipe 2 at its connection part 2a to the branch port 1a is previously set larger than the diameter of the branch port 1a by 0.5 to 5.0%. A leading end 2b of the branch pipe 2 is gradually narrowed as it goes from the connection part 2a to the tip portion. In addition, the outer diameter of the leading end is previously set smaller than the diameter of the branch port 1a.

3. 发明专利

JPH06213385A PLASTIC DIVERGENT SADDLE FOR CORRUGATE PIPE AND METHOD FOR MOUNTING 失效
公开(公告)号：JPH06213385A
公开(公告)日：1994-08-02
申请号：JP2488793
申请日：1993-01-19
申请人： KURIMOTO LTD , MITSUBISHI PETROCHEMICAL CO
发明人： KITAGAWA MASAYOSHI , SHIOMI ICHIRO , NAGASE SADAO
IPC分类号： B29C65/34 , B29L31/24 , F16L33/00 , F16L33/28 , F16L41/06 , F16L47/02
摘要： PURPOSE:To facilitate mounting of a branch saddle by forming a surface unevenness on the pipe axis direction inside surface of the branch saddle so that the surface unevenness on the periphery of a corrugate pipe can be fitted concave to convex, mounting an electric wire for heating along this uneven surface on the saddle bore. and thereby enabling fusion attachment of the two uneven surfaces with current feed to the electric wire. CONSTITUTION:A branch saddle 1 made of plastic has a socket 12, which is in the form of a perfect cylinder perpendicular to the pipe axis and is positioned in the upper part of the saddle 1, and an uneven surface 11 which is positioned in the lower part, formed in a semi-cylinder parallel to the pipe axis, and whose inside surface can be fitted on/in convexes and concaves of the corrugated pipe uneven surface. An electric wire 3 for heating is laid along this uneven surface 11. When the saddle 1 is to be mounted, the uneven surfaces of the corrugated pipe and saddle 1 are fitted each other, and in this condition, current is fed to the electric wire 3 to melt the plastic material surrounding, and thereby the two members are fusion attached into a single piece. Thus joining is completed.

4. 发明专利

JPH06229492A JOINT STRUCTURE FOR CORRUGATE PIPE 失效
公开(公告)号：JPH06229492A
公开(公告)日：1994-08-16
申请号：JP3747593
申请日：1993-02-01
申请人： KURIMOTO LTD , MITSUBISHI PETROCHEMICAL CO
发明人： KITAGAWA MASAYOSHI , SHIOMI ICHIRO , NAKANO RYOICHI , NAGASE SADAO
IPC分类号： F16L33/00 , F16L33/28
摘要： PURPOSE:To apply as various kinds of pipe joints by forming a joint into a right circular cylinder and the like according to a pipe line to be formed, providing a projecting row to be engaged with a corrugate pipe end part side face in the inner face, and opening an insertion port for a falling out preventing pin to be engaged with a corrugate pipe recessed part in the outer circumferential part. CONSTITUTION:A plastic joint 2 is formed into a right circular cylinder, an elbow, a cheese, and the like according to a pipe line to be formed. A projecting row 21 to be engaged with the end part side faces 13 of corrugate pipes 1A, 1B is projectingly arranged on the inner face 23 of the joint 2. When the corrugate pipes 1A, 1B are inserted, the end part side faces 13 touch the projecting row to be positioned. Under this condition, a pin insertion port 22 is opened so that a pin 4 for preventing falling out can be inserted into a recessed part, 11A of each of the corrugate pipes 1A, 1B. In addition, a rubber ring 3 is arranged in another recessed part 11B of each of the corrugate pipes 1A, 1B.

5. 发明专利

JPH11315978A PIPE JOINT FOR PREVENTING DETACHING 失效
公开(公告)号：JPH11315978A
公开(公告)日：1999-11-16
申请号：JP13745098
申请日：1998-04-30
申请人： KURIMOTO LTD
发明人： SHIMOYASU TETSUJI , HIRATA SHOICHI , SHIOMI ICHIRO
IPC分类号： F16L21/08
摘要： PROBLEM TO BE SOLVED: To increase a bending moment for enduring the ununiform force of hydraulic pressure and greatly simplify the formation of an engaging projection in the vicinity of the tip of an insertion port, which is an essential condition for a detaching preventing function. SOLUTION: A pipe joint is provided with an annular bending preventing ring 5 provided in an annular space S between the opening end 11 of an socket 1 and the outer peripheral surface of a spigot 2 and a pipe cutting liner 6 fitted between the tip surface 22 of the spigot and the step 12 of the socket deepest part, and an engaging ring 61 is integrally formed where one end of the pipe cutting liner 6 is extended while being fitted to the tip surface 22 and the outer peripheral surface of the spigot and then fitted in an annular groove 23 formed in the outer peripheral surface of the spigot. By the bending preventing ring 5 and the pipe cutting liner 6, bending moment countering the ununiform forces of abnormal-shaped pipes adjacent to each other is strengthened in a multiplication manner. The attaching of the pipe cutting liner 6 is much easier than the on-site attaching of a conventional spigot ring, and reliability is increased with a good anti corrosive property.

6. 发明专利

JPH11153289A PIPE END CORROSION PREVENTIVE STRUCTURE OF PIPE JOINT PART AND ITS CORROSION PREVENTIVE CORE 失效
公开(公告)号：JPH11153289A
公开(公告)日：1999-06-08
申请号：JP32283597
申请日：1997-11-25
申请人： KURIMOTO LTD
发明人： HIRATA SHOICHI , SHIMOYASU TETSUJI , SHIOMI ICHIRO
IPC分类号： F16L21/02 , F16L58/18
摘要： PROBLEM TO BE SOLVED: To eliminate the adhering work of a corrosion protective core and to suppress the pressure loss in a flow passage. SOLUTION: A pipe insert 1 is covered with a corrosion protective core 30. The corrosion protective core 30 comprises an annular bag part consisting of inner and outer cylinders 31, 32, and the pipe insert 1 is inserted in the bag part. An internal projecting bar 35 is pressed against the inner surface of the pipe insertion 1 to seal water, and an external projecting bar 34 is pressed against the inner surface of a socket 2 to seal water. A part (dotted part) surrounded by a rubber ring 9, and the projecting bars 34, 35 becomes the corrosion protective area through the sealing. Even when the area is flooded with water and the rust is generated, no further proceeding of the rust is present if oxygen in the area is consumed. Because the core 30 is located within a recessed part of the socket 2, it is not synchronous with the insert 1 if the insert is moved, and the corrosion protective function is maintained. In addition, the core 30 need not be provided across the insert 1 and the socket 2, and the contraction length of the diameter of a flow passage due to the presence of the core 30 can be minimized, and the pressure loss in the flow passage can also be suppressed.

7. 发明专利

JPH11125374A SEPARATION PREVENTING PIPE JOINT 失效
公开(公告)号：JPH11125374A
公开(公告)日：1999-05-11
申请号：JP30647397
申请日：1997-10-20
申请人： KURIMOTO LTD
发明人： SHIMOYASU TETSUJI , SHIOMI ICHIRO , HIRATA SHOICHI
IPC分类号： F16L21/08 , F16L21/04 , F16L27/12
摘要： PROBLEM TO BE SOLVED: To impede movement of the fellow pipes at the time of an ordinary water pressure in a pipe joint, against unsteady external force, move the pipe, though it is extended/contracted, prevent uncoupling. SOLUTION: In this pipe joint, between an inner side surface 41 of a lock ring 4 and an inner side surface 22 of a spigot protrusive strap 21, a positioning spacer 5 formed by a single-split flexible material is fitted, the positioning spacer 5 is formed in an integral shrinkage convenient double level cylindrical shape with a step difference 53 by almost an equal length L of a large/small diametric part 51, 52. Sufficiently against an ordinary water pressure even when it is applied, by maintaining a mutual position relation, necessity for taking a conventional procedure, such that a water pressure test can be executed first after a mutual position of a pipe is fixed by back filling, is eliminated. Against unsteady external force of earthquake or the like, stress is concentrated to the step difference 53 of the positioning spacer, it is sheared, in accordance with separating both the pipes, in the large diametric part 51, the small diametric part 52 is overlapped together to creep in, a joint extension margin L is obtained, but in the end, the lock ring and the spigot protrusive strap are locked, uncoupling is impeded.

8. 发明专利

JPH10332060A SEPARATION PREVENTING PIPE JOINT 失效
公开(公告)号：JPH10332060A
公开(公告)日：1998-12-15
申请号：JP15778297
申请日：1997-05-29
申请人： KURIMOTO LTD
发明人： OKAMOTO YOSHIKI , SHIMOYASU TETSUJI , SHIOMI ICHIRO
IPC分类号： F16L1/024 , F16L21/04 , F16L21/08
摘要： PROBLEM TO BE SOLVED: To provide both earthquake resistance and integral reinforcement in a joint part, in a pipe line laid under the ground having many bent parts. SOLUTION: In this separation preventing pipe joint, an elastic separation preventing belt 5 holding in the circumferential direction many biting lock pawls 51, arranged with a lock ring 4 to be biting locked in a peripheral surface of a spigot 2 to play a role preventing separation at ordinary time, is fitted in an annular groove 11 engraved in an internal peripheral surface of a socket 1, and a spigot protrusion 21 engaged with the lock ring 4 to play a role preventing separation of a pipe against excessive extracting force at emergency time is peripherally provided in the vicinity of an end part 22 of the spigot 2. When a normal pressure of water is used, the biting lock pawl 51 of the pipe bites in a peripheral surface of the spigot 2, to be engaged to fix a position relation, even relating to non-averaged force of pipe in deformed shape, flexibility of the separation preventing belt is displayed, the biting lock pawl is uniformly engaged. When large scaled movement of the ground directly hits, movement of the pipe is caused, the lock ring 4 and the spigot protrusion 21 butt on each other, any more separation is completely impeded.

9. 发明专利

JPH0681993A FAUCET WITH SADDLE 失效
公开(公告)号：JPH0681993A
公开(公告)日：1994-03-22
申请号：JP25729492
申请日：1992-08-31
申请人： KURIMOTO LTD , MITSUBISHI GAS CHEMICAL CO
发明人： KITAGAWA MASAYOSHI , MICHIURA YOSHISADA , SHIOMI ICHIRO , WATANABE NORIYOSHI , YAMAMIYA KAZUO
IPC分类号： F16L41/04 , F16L41/06 , F16L47/00 , F16L58/18
摘要： PURPOSE:To lengthen a durable period and reduce the weight by peripherally forming reinforcing ribs on the respective peripheral surfaces of a saddle having a water-stock mechanism engaginly attached to its top part and of a band fastened to the saddle through a flange by means of a bolt. CONSTITUTION:A faucet 41 with a saddle is branched from a supply water main pipe P buried under the ground for distribution of water. Its main part comprises a water-stop mechanism made of a metal and a saddle mechanism. In this case, the saddle mechanism comprises a semi-cylindrical saddle 21 made of synthetic resin having a water-stop mechanism engagingly attached to its top part and a semi-cylindrical band 25 made of synthetic resin fastened to the saddle 21 through flanges 22A and 22B on both sides by means of a bolt 23 and nuts 24, both being made of a metal. A plurality of upper and lower reinforcing ribs 26 and 27 are peripherally formed on the sides of the outer peripheries of the saddle 21 and the band 25 with mounting holes 28A and 28B for the bolt 23 saudwiched therebetween. This constitution results lenthening of a durable period and facilitation of a work at a site through the weight reduction.

10. 发明专利

JP2008173849A Manufacturing method of exterior concrete pipe and formwork for manufacturing thereof 有权
标题翻译：外部混凝土管及其制造方法的制造方法
公开(公告)号：JP2008173849A
公开(公告)日：2008-07-31
申请号：JP2007009085
申请日：2007-01-18
申请人： Kurimoto Ltd , 株式会社栗本鐵工所
发明人： SHIOMI ICHIRO , OKAMOTO HIDEO , INOUE TOSHIBUMI
IPC分类号： B28B21/90 , B28B21/58
摘要： PROBLEM TO BE SOLVED: To easily remove a formwork embedded in a concrete layer.
SOLUTION: In a manufacturing method of an exterior concrete pipe, the outer periphery of a pipe body 1 having a flange part 6 at an insertion port 3 side is covered with a cylindrical exterior frame 10, and concrete is cast in an annular space between the outer periphery of the pipe body 1 and the inner periphery of the exterior frame 10 at the socket 2 side of the flange part 6 to be integrated, and the pipe body 1 and an excavating machine 21 can be connected through the bolt 26 inserted in a through-hole 22 provided on the flange part 6. Before placing the concrete, the formwork 15 is displaced at the socket 2 side of the flange part 6 to close the through-hole 22, and after placing the concrete, the bolt shaft 25 is screwed in the formwork 15 and the tip end 25a contacts the pipe body 1 to release the formwork 15 in the outside diameter direction. Since the formwork 15 is released by the reaction force of the bolt shaft 25, the fixed formwork 15 can be easily removed. Moreover, the peripheral concrete layer 9 is not damaged.
COPYRIGHT: (C)2008,JPO&INPIT
摘要翻译：要解决的问题：易于拆除嵌入混凝土层的模板。解决方案：在外部混凝土管的制造方法中，在插入口3侧具有凸缘部6的管体1的外周被圆筒形外框架10覆盖，并且将混凝土浇铸成环状管体1的外周与凸缘部6的插座2侧的外框架10的内周之间形成一体的空间，管体1和挖掘机21可以通过螺栓26连接插入到设置在凸缘部6上的通孔22中。在放置混凝土之前，模板15在凸缘部6的插座2侧移位以闭合通孔22，并且在放置混凝土之后，轴25旋入模板15中，并且尖端25a与管体1接触，以沿外径方向释放模板15。由于模板15被螺栓轴25的反作用力释放，所以可以容易地移除固定模板15。此外，周边混凝土层9不被损坏。版权所有（C）2008，JPO＆INPIT

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