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31. 发明专利

JPH0221095A CORROSIONPROOF FITTING AND RESISTANCE MEASURING METHOD OF CORROSIONPROOF FITTING 失效
公开(公告)号：JPH0221095A
公开(公告)日：1990-01-24
申请号：JP17133588
申请日：1988-07-08
申请人： OSAKA GAS CO LTD , NIPPON KOKAN PIPE FITTING MFG
发明人： MORITA HIROSHI , MATSUMOTO SEIICHI , NISHIDA SHUHEI , INOUE MASACHIKA , HIRABAYASHI HIDEO
IPC分类号： G01R27/02 , F16L25/02
摘要： PURPOSE:To readily measure resistance by forming through holes on the sleeves made of synthetic resin coat layers extending in the protrusional direction from connecting ports. CONSTITUTION:Thread sections 4 and 5 composed of tapered female threads are formed on the internal surfaces of the connecting ports 2 and 3 provided to both ends of a metallic fitting body 1 respectively. On the external surface of the fitting body 1 are formed synthetic resin coat layers 8 forming themselves into sleeves 9 and 10 extending in the protrusional direction from connecting ports 2 and 3. On the synthetic resin coat layer 8 a through hole 11 extending to the external surface of the fitting body 1 is formed, and in addition through holes 12 and 13 are also formed on the root sections of the sleeve 9 and 10 respectively.

32. 发明专利

JPH11287730A METHOD FOR TESTING AIR TIGHTNESS OF BRANCH PIPING 失效
公开(公告)号：JPH11287730A
公开(公告)日：1999-10-19
申请号：JP9028598
申请日：1998-04-02
申请人： OSAKA GAS CO LTD , NIPPON KOKAN PIPE FITTING MFG
发明人： FUJISAWA SHOZO , NAGAYAMA SEIICHI , HIRABAYASHI HIDEO , TONO TAKETOSHI
IPC分类号： G01M3/28
摘要： PROBLEM TO BE SOLVED: To perform air tightness test not only of a branch pipe itself, at the joint of the branch pipe to a branch opening but also the entire air tightness test easily in a short time after the branch pipe is fixed to each of a plurality of branch openings. SOLUTION: A pipe 2 coupled, at a plurality of branch openings 21-25, with branch pipes 31-35 each having a closed fluid outlet is closed, at one end part thereof, with a tight plug 4 and then a rod 6 having forward end fixed with a sound collecting part 5 is inserted into the plug 4 such that the rod 6 can slide airtightly. The rod 6 is pushed/pulled in the axial direction of the pipe 1 to face the sound collecting part 5 sequentially against each of the plurality of branch openings 21-25 and detect the sound of fluid at each branch opening 21-25 thus deciding whether a leak is present or not. Similarly, the sound of fluid is detected at one end of the pipe 2 thus deciding whether a leak is present or not.

33. 发明专利

JPH11287388A GAS PIPING STRUCTURE 失效
公开(公告)号：JPH11287388A
公开(公告)日：1999-10-19
申请号：JP9028498
申请日：1998-04-02
申请人： OSAKA GAS CO LTD , NIPPON KOKAN PIPE FITTING MFG
发明人： FUJISAWA SHOZO , SHIMIZU HIROSHI , HIRABAYASHI HIDEO , TONO TAKETOSHI
IPC分类号： F16L55/10
摘要： PROBLEM TO BE SOLVED: To interlock the closing motion of a passage by a shutoff valve built in a gas meter of vibratory sensitive type with the shutoff motion of gas supply to the line of the primary pipings. SOLUTION: A fitting 5 is installed at the starting part of the primary pipings between a main pipe and a gas meter. The fitting 5 is equipped with a housing 55 including a gas inlet side connection hole 51, gas outlet side connection hole 52, a valve chest 53, and a solenoid valve accommodating chamber 54. The valve chest 53 is fitted with a valve seat 56 and a valve element 57, and a solenoid valve 58 capable of driving the valve element 57 both in the closing and opening directions is installed in the chamber 54. The solenoid valve 58 is remotely controlled via a control device installed on the ground.

34. 发明专利

JPH10196858A SEAL DEVICE INTERLOCKED JOINT FOR RESINOUS CONDUIT AND METALLIC CONDUIT 失效
公开(公告)号：JPH10196858A
公开(公告)日：1998-07-31
申请号：JP379597
申请日：1997-01-13
申请人： OSAKA GAS CO LTD , NIPPON KOKAN PIPE FITTING MFG
发明人： FUJISAWA SHOZO , HIRABAYASHI HIDEO , KISHIMOTO YUJI
IPC分类号： F16L15/04
摘要： PROBLEM TO BE SOLVED: To prevent a fluid leak in an interlocked joint through clearance gaps produced between it and associated conduits, which possibly cause a leak of fluid flowing through the conduits, by checking the inflow of the fluid into the clearance gaps, and prevent contraction of the connection cylinders of the interlocked joint, which is possibly caused in the process of their molding, from adversely influencing the sealing performance of the interlocked joint. SOLUTION: A seal device is applied to an interlocked joint comprising a first connection cylinder of synthetic resin for connection to a resinous conduit and a second connection cylinder 2 of metal for connection to a metallic conduit. The first connection cylinder and the second connection cylinder 2 respectively have a coupling cylinder part 3 and a coupled cylinder part 4 both radially overlapping each other. The seal device involves a support ring 6 provided with two seal members 35 and 45, which individually seal the coupling cylinder part 3 and the coupled cylinder part 4.

35. 发明专利

JPH0814458A SYNTHETIC RESIN JOINT FOR RESIN FLEXIBLE PIPE AND MANUFACTURE THEREOF 失效
公开(公告)号：JPH0814458A
公开(公告)日：1996-01-16
申请号：JP14332394
申请日：1994-06-24
申请人： OSAKA GAS CO LTD , NIPPON KOKAN PIPE FITTING MFG
发明人： KAIRIKU TSUTOMU , FUJISAWA SHOZO , KAWABATA ICHIRO , HIRABAYASHI HIDEO
IPC分类号： F16L33/00 , B29D99/00 , B29K23/00 , B29K77/00 , B29K105/08 , F16L33/28 , B29D31/00
摘要： PURPOSE:To prevent easy generation of relaxation of stress in a tightening part between a nut body and a connection port part, simultaneously eliminate corrosion and rust of the nut body and the connection port part. CONSTITUTION:A connection port part 10, formed of synthetic resin of nylon 66 or the like excellent in mechanical strength and rarely generating relaxation of stress, is connected to a polyethylene-made short pipe 1. A nut body 2 is made of synthetic resin of polyacetal or the like excellent in mechanical strength and rarely generating relaxation of stress.

36. 发明专利

JPH0719379A CONNECTION STRUCTURE OF PIPE JOINT AND RESIN PIPE 失效
公开(公告)号：JPH0719379A
公开(公告)日：1995-01-20
申请号：JP16165093
申请日：1993-06-30
申请人： OSAKA GAS CO LTD , NIPPON KOKAN PIPE FITTING MFG
发明人： ISHIKAWA TETSUO , TANAKA TAKAHIRO , HIRABAYASHI HIDEO , NODA SHOZABURO
IPC分类号： F16L21/08
摘要： PURPOSE:To increase connection strength between a resin pipe and a pipe joint in a structure where a resin pipe provided with a tubular stiffener at the end part is inserted in a receiving port and whose bite teeth of a receiving port inner surface are caught in the resin tube, by improving the shape and dimension of the stiffener. CONSTITUTION:In a pipe joint 1, an anti-corrosion layer 3 is formed at the outer peripheral part of the receiving port, and rind-shaped bite teeth 3 are formed in the inner surface of the receiving port, 2 at plural positions in an axial direction at, prescribed intervals. A tubular stiffener 60 which uses ductile material such as steel pipe on the end part is fitted onto a heat insulation tube 50. After the end part where the stiffener 60 is fitted is inserted in the receiving port 2, a diameter widening device is moved inside the stiffener in an axial direction to widen the diameter of the end part, of a resin pipe 5, and make the bite teeth 3 caught in the external wall. With this constitution, the dimension of the stiffener 60 is set so that its end part, 61 may be protruded from the outmost end bite teeth 3A by H in a pull-out direction X, thus it is possible to widen the whole length uniformly.

37. 发明专利

JPH0392698A CORROSION-PROOF PIPE JOINT 失效
公开(公告)号：JPH0392698A
公开(公告)日：1991-04-17
申请号：JP23192989
申请日：1989-09-06
申请人： OSAKA GAS CO LTD , NIPPON KOKAN PIPE FITTING MFG
发明人： ONOUE TERUTAKA , MINAMIDE YOSHIAKI , HIRABAYASHI HIDEO
IPC分类号： F16L58/18
摘要： PURPOSE:To improve safety and workability in supply pipe service extension by incorporating a closing means provided on its branch part with a valve body which is brought into contact with and separated from a valve seat in capable of mounted and removed and by blocking either one of ports by a blocking means in capable of mounted and removed. CONSTITUTION:In a service extension work of a supply pipe, ground is drilled, a corrosion-proof pipe joint 10 is exposed, and after a cap 15D and a plug 15C are removed, a valve body 15A is closed. Next, a blocking means 16 is removed from the other port 11B so as to open the other port 11B. At this time, a ball band 22 for preventing coming-off, a retainer 22 and a ring shaped seal member 20 are incorporated into a presser ring 18 which has been removed, and it is attached to an initial end of the supply pipe for extension. And the initial end part of the supply pipe for extension is inserted into the port 11B, and the presser ring 18 is tightened. Then, a valve holder 15B is rotated so as to open the valve body 15A.

38. 发明专利

JPH0221014A SCREW 失效
公开(公告)号：JPH0221014A
公开(公告)日：1990-01-24
申请号：JP17133388
申请日：1988-07-08
申请人： OSAKA GAS CO LTD , NIPPON KOKAN PIPE FITTING MFG
发明人： MORITA HIROSHI , MATSUMOTO SEIICHI , FUJISAWA SHOZO , NISHIDA SHUHEI , INOUE MASACHIKA , HIRABAYASHI HIDEO
IPC分类号： F16L15/00 , F16B33/06 , F16B39/34 , G06F9/44
摘要： PURPOSE:To enable electrical insulation by forming a screw having a different diameter at a metallic screw body and adhering blended fabric wove by glass fiber and ceramics fiber on the surface of the screw having the different diameter in an electrical insulation coupling, etc. for a threaded type gus tube. CONSTITUTION:A screw 2a having a different diameter larger than that of a screw 3 having a standard diameter is formed at the inner circumference of the respective ends of a cylindrical coupling body 2, and blended fabric 4a consisting of glass fiber 4aa and ceramics fiber 4ab is adhered to the surface of the screw 2a having the different diameter to form a screw 3 having standard diameter. Accordingly, an electrical insulating layer 4 can be formed on the surface of the screw so that electrical insulation can be possible.

39. 发明专利

JP2001132886A HEADER USED FOR WATER PIPING 失效
公开(公告)号：JP2001132886A
公开(公告)日：2001-05-18
申请号：JP31102499
申请日：1999-11-01
申请人： NIPPON KOKAN PIPE FITTING MFG
发明人： OSUGA SHOICHI , TAKIMOTO AYANORI , HIRABAYASHI HIDEO , NAGAYAMA SEIICHI
IPC分类号： E03C1/02 , A62C35/68 , F16L27/093 , F16L41/03
摘要： PROBLEM TO BE SOLVED: To provide a header used for water piping such as many kinds of water and not water supply pipelines different in the number and direction of branch pipe takeoff ports only by preparing a small number of parts. SOLUTION: A first divided header 1 and a second divided header 2 respectively have end connection parts 3, 4, 8, 9 mutually communication with one end and the other end, and have at least one branch pipe outlet ports 5, 10 respectively communicating with the one-end connection parts 3, 8 and other-end connection parts 4, 9, at each intermediate part between the one-end connection parts 3, 8 and other-end connection parts 4, 9. A third divided header 30 has an end connection part 31 of the same shape and size as the one-end connection part 8 of the second divided header 2 at one end, and an end connection part 32 of the same shape and size as the other-end connection part 4 of the first divided header 1 at the other end, and has at least one branch pipe outlet port 33 communication with each of the one-end connection part 31 and other-end connection part 32, at an intermediate part between the one-end end connection part 31 and other-end connection part 32.

40. 发明专利

JPH11241792A PIPE JOINT 失效
公开(公告)号：JPH11241792A
公开(公告)日：1999-09-07
申请号：JP32495998
申请日：1998-11-16
申请人： NIPPON KOKAN PIPE FITTING MFG , NIPPON KOKAN KK , KEIWA KOGYO KK
发明人： HIRABAYASHI HIDEO , KISHIMOTO YUJI , NISHINO KATSUHIKO , IKEDA MASAHIRO
IPC分类号： F16L19/08 , F16L33/22
摘要： PROBLEM TO BE SOLVED: To provide a pipe joint that cannot easily be disassembled but can be disassembled when the disassembly is required, and to screw in a press ring to prevent the pipe from being loosed only when inserting length of the tube into a connecting opening part is enough long. SOLUTION: An annular groove 18 is formed at the intermediate part of a male screw 17 of a joint body 1 having a connecting opening part 12, and an elastic extensible ring body 2 is held on it. The joint has a press ring 3, a loose preventing ring 4, and a support body for the loose preventing ring 5. When a female screw 31 of the press ring 3 moves from a first screw part 17a of the male screw 17 to a second screw part 17b, an engaging part 33 of the press ring 3 faces the ring body 2 projecting from the annular groove 18. When a pipe is inserted into the inner part, the support body 5 for the loose preventing ring is pressed out from the loose preventing ring 4 and the press ring 3 can be screwed in.

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