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1. 发明专利

JPH11304079A REPAIRING MEMBER AND REPAIRING METHOD FOR PLASTIC PIPE 失效
公开(公告)号：JPH11304079A
公开(公告)日：1999-11-05
申请号：JP11401298
申请日：1998-04-24
申请人： KUBOTA KK
发明人： BAI HIDEKI , WATABE HIROTSUGU , HIOKI MASATO , ENOMOTO HIDEKAZU
IPC分类号： F16L55/16
摘要： PROBLEM TO BE SOLVED: To repair a plastic pipe speedily and easily even in the case when a tape is temporarily wound around a damaged part or a circumference of the damaged part is rolled up. SOLUTION: A repairing member 10 for a plastic pipe made of a curved plate 5 to be arranged by being assembled in an outer peripheral overall periphery of the plastic pipe which is damaged and a central part of a curved plate inner surface 5a of which is thinned 7 by leaving a circumferential part and a heater 8 arranged along an axial direction end 5b and a connecting surface 6 of an inner surface of the curved plate 5 is arranged on a part where the damage is caused by covering the overall periphery of the plastic pipe, an outer surface is fixed by a fastening member and the heater 8 is heated and fused.

2. 发明专利

JPH11254546A METHOD AND APPARATUS FOR DETERMINING SHAPE OF REPAIR MEMBER 失效
公开(公告)号：JPH11254546A
公开(公告)日：1999-09-21
申请号：JP5728698
申请日：1998-03-10
申请人： KUBOTA KK
发明人： WATABE HIROTSUGU , HIOKI MASATO , BAI HIDEKI , ENOMOTO HIDEKAZU
IPC分类号： B29C65/36 , B29C73/10 , F16L55/18
摘要： PROBLEM TO BE SOLVED: To repair the damage part of a plastic pipe simply and to stabilize fusion performance. SOLUTION: Plane coordinates are set around the damage part 2 of a plastic pipe 1, the surface pressure distribution of an area enclosing the damage part 2 is measured by a surface pressure distribution sensor 3. A pattern forming device 5 extracts a closed area of zero surface pressure based on the surface pressure distribution measured by the sensor 3, and the maximum value and the minimum value on the X-axis of the coordinates of the closed area and the maximum value and the minimum value on the Y-axis are obtained to form the closed area, the first cold zone is set outside the closed area, a heater zone is set outside the first cold zone, the second cold zone is set outside the heater zone, at least, the diagram of the lines which forms a diagram consisting of lines outside the second cold zone and the heater zone is printed by a printer 13.

3. 发明专利

JP2000343578A PRODUCTION OF POLYOLEFINIC LINER PIPE 失效
公开(公告)号：JP2000343578A
公开(公告)日：2000-12-12
申请号：JP15726399
申请日：1999-06-04
申请人： KUBOTA KK
发明人： YONEDA RYUICHI , ENOMOTO HIDEKAZU , HARADA TAKATOMO
IPC分类号： B29C47/02 , B29C63/34 , F16L1/00 , F16L55/16
摘要： PROBLEM TO BE SOLVED: To certainly and closely bond the outer surface of a liner pipe to the inner surface of a worn-out pipe to enhance the strength of the pipe. SOLUTION: A round pipe 12a having an outer diameter of a first size is extruded to be pulled downwardly to set the outer diameter of the pipe 12a to a second size almost same to the inner diameter of a worn-out pipe and, thereafter, a part of the round pipe 12a is pushed inwardly in a diameter direction to contract the outer diameter of the pipe 12a as a whole to form a liner pipe 12. This liner pipe 12 is inserted in the worn-out pipe and, when steam pressure is applied to the interior of the liner pipe 12 to restore the pipe 12 under heating, the outer diameter of the liner pipe 12 exceeds the second size to be expanded and the outer surface of the liner pipe 12 is closely bonded to the inner surface of the worn-out pipe.

4. 发明专利

JPH11348123A RESIN PIPE FUSING JIG 失效
公开(公告)号：JPH11348123A
公开(公告)日：1999-12-21
申请号：JP15344698
申请日：1998-06-03
申请人： KUBOTA KK
发明人： YONEDA RYUICHI , ENOMOTO HIDEKAZU , HARADA TAKATOMO
IPC分类号： B23K37/053 , B29C65/02 , B29K23/00 , B29L23/00
摘要： PROBLEM TO BE SOLVED: To obtain a resin pipe fusing jig capable of fusing a pipe large in SDR being the ratio of the diameter and wall thickness of the pipe under sufficient resin pressure without leaving a core in the pipe and capable of easily correcting the pipe to a perfect circle state. SOLUTION: A resin pipe fusing jig being a cylindrical body wherein an outer surface 4a is a parallel surface 4a and an inner surface 4c is set to be an inclined surface which increases in thickness toward one end 4b consists of split cylindrical bodies 4...4 formed by dividing the cylindrical body in the circumferential direction, a base plate 5 supporting each one end parts 4b of the split pieces 4 of the respective split cylindrical bodies 4 movably parallelly in the diameter direction of the cylindrical body, a conical trapezoidal member 6 with the outer periphery concentrically arranged in the space 7 surrounded by the split pieces 4 of the cylindrical body in a state that the inner surface 4c increasing in wall thickness toward to one end 4b is provided along the inclined surface, and a drive member 8 allowing the conical trapezoidal member 6 to forcibly approach and move in the direction of a base plate 5.

5. 发明专利

JPH11344190A CONNECTION FITTING FOR DIFFERENT DIAMETER PIPE 失效
公开(公告)号：JPH11344190A
公开(公告)日：1999-12-14
申请号：JP15344598
申请日：1998-06-03
申请人： KUBOTA KK
发明人： YONEDA RYUICHI , ENOMOTO HIDEKAZU , HARADA TAKATOMO
IPC分类号： F16L47/02
摘要： PROBLEM TO BE SOLVED: To surely and easily connect thermoplastic different diameter pipes using a small number of part items. SOLUTION: This connection fitting is provided with a fitting 5 having diameters that can receive plastic pipes 1 and 2 at both ends, a short pipe 6 having wall thickness (t) equal to the difference in radius between the inner diameter of the fitting 5 and the outer diameter of the plastic pipe 1 to be connected to the inner diameter section of the fitting 5, and heaters to be inserted between the short pipe 6 and the plastic pipe 2 and between the short pipe 6 and the inner face of the fitting 5.

6. 发明专利

JPH11304080A REPAIRING MEMBER AND REPAIRING METHOD FOR PLASTIC PIPE 失效
公开(公告)号：JPH11304080A
公开(公告)日：1999-11-05
申请号：JP11401398
申请日：1998-04-24
申请人： KUBOTA KK
发明人： WATABE HIROTSUGU , HIOKI MASATO , BAI HIDEKI , ENOMOTO HIDEKAZU
IPC分类号： F16L55/16
摘要： PROBLEM TO BE SOLVED: To stop the eruption of fluid by speedily covering a damaged part when a damage is produced on a plastic conduit run and simultaneously to speedily repair it by induction heating or electric heating by arranging also a heater. SOLUTION: A thin plate 5 made of thermoplastic resin on which a heater is arranged is molded in a shape furnished with a cylindrical part or a curved part free to elastically fit on a pipe outer periphery, a repairing member 10 for this plastic pipe is elastically fitted on an outer periphery of the plastic pipe 1 by covering a damaged part, a part between a circumference of the reparing member 10 for the plastic pipe and the outer periphery of the plastic pipe 1 is sealed, a curved plate 9 made of thermoplastic resin is applied and fixed at a position corresponding to the damaged part, and the heater arranged on the repairing member 10 for the plastic pipe is heated and fused.

7. 发明专利

JPH11304078A REPAIRING METHOD AND REPAIRING MEMBER FOR PLASTIC PIPE 失效
公开(公告)号：JPH11304078A
公开(公告)日：1999-11-05
申请号：JP10681398
申请日：1998-04-17
申请人： KUBOTA KK
发明人： WATABE HIROTSUGU , HIOKI MASATO , BAI HIDEKI , ENOMOTO HIDEKAZU
IPC分类号： F16L55/16
摘要： PROBLEM TO BE SOLVED: To correspond to all large damages caused on a plastic pipe, to speedily repair them and to easily set supply capacity at a construction site. SOLUTION: Plural tile type repairing members 4 previously formed in a constant outline shape and on an inner surface of each of which a heater 4b is provided are connected on a part where a damage 1a of a plastic pipe 1 is caused in width to cover the damage 1a, arranged and placed between connecting surfaces with no clearance through a heater, fixed on the plastic pipe 1 and heated by generating a vortex electric current by electromagnetic induction by a heater 4a.

8. 发明专利

JPH11287390A REPAIRING DEVICE FOR PLASTIC PIPE 失效
公开(公告)号：JPH11287390A
公开(公告)日：1999-10-19
申请号：JP8911898
申请日：1998-04-02
申请人： KUBOTA KK
发明人： WATABE HIROTSUGU , HIOKI MASATO , BAI HIDEKI , ENOMOTO HIDEKAZU
IPC分类号： F16L55/16 , F16L55/18
摘要： PROBLEM TO BE SOLVED: To eliminate the necessity for taking any measure to shut off a fluid, shorten the working time to a great extent, prevent certainly the internal fluid from leaking outside, allow easy and safe execution of specified repairing works, and reduce the working costs. SOLUTION: A repairing device for plastic pipe comprises a two-split cylindrical fixing jig body 4 having an inside surface 2a curving along the peripheral surface of a plastic pipe 10 and arranged on the outside of a plate-form repair member 2 of plastics in such a way as covering the whole repair member 2 where a heater 3 is embedded on the side with inside surface 2a, a fixing/holding tool 5 whereby the jig body 4 is fixed to and held on the plastic pipe 10, and a ring-shaped seal member 9 which is equipped with a power supplying device to the heater 3 and generates tight attachment to the peripheral surface of the plastic pipe 10 where the periphery of the repair member 2 is wound fast to the inside surface of the jig body 4.

9. 发明专利

JP2000343606A PRODUCTION OF POLYOLEFIN-BASED LINER PIPE 失效
公开(公告)号：JP2000343606A
公开(公告)日：2000-12-12
申请号：JP15726299
申请日：1999-06-04
申请人： KUBOTA KK , OSAKA GAS CO LTD
发明人： YONEDA RYUICHI , ENOMOTO HIDEKAZU , HARADA TAKATOMO
IPC分类号： B29C48/32 , B29C53/08 , B29C63/34 , B29C47/20
摘要： PROBLEM TO BE SOLVED: To provide a method for producing a polyolefin-based liner pipe in which partial insufficiency in strength of the liner pipe is solved and stable quality is obtained. SOLUTION: When a thick-wall part provided in a part of a pipe 12a is pushed into the inside in the radial direction by a forming plate 90, the pipe wall of the pipe 12a is deformed into a nearly U-shaped form and a nearly heart-shaped liner pipe 12 is obtained. At this time, since the thick-wall part is stretched in accordance with deformation of the pipe wall, wall thickness of the thick-wall part is made thin and wall thickness is made uniform in the whole periphery of the liner pipe 12.

10. 发明专利

JPH11320685A MANUFACTURE OF POLYOLEFIN LINER PIPE 失效
公开(公告)号：JPH11320685A
公开(公告)日：1999-11-24
申请号：JP13248298
申请日：1998-05-15
申请人： KUBOTA KK
发明人： YONEDA RYUICHI , ENOMOTO HIDEKAZU , HARADA TAKATOMO
IPC分类号： B29C48/32 , B29C53/08 , B29C63/34 , B29K23/00 , B29L23/00 , B29C47/20
摘要： PROBLEM TO BE SOLVED: To easily continuously mold a polyolefin liner pipe to be inserted without resistance even in a bent pipeline. SOLUTION: The method for manufacturing a polyolefin liner pipe comprises the steps of extrusion molding a melted polyolefin resin in a tubular state, then once cooling the molded product 3 in a cooling tank 4, then reheating the molding 3 in a heating tank 5 at a softening point to a melting point, deforming it flatly at a tube section of the heated molded product 3, and cooling the flatly deformed molding 3 in a cooling tank 7.

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