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71. 发明专利

JPH11190489A TRANSITION JOINT 失效
公开(公告)号：JPH11190489A
公开(公告)日：1999-07-13
申请号：JP35855397
申请日：1997-12-25
申请人： HITACHI METALS LTD
发明人： NOZAKI HIDEO , FUJIYOSHI MINORU , MIYATA KAZUFUMI
IPC分类号： F16L33/26 , F16L1/00 , F16L9/06 , F16L33/00 , F16L33/28 , F16L47/06
摘要： PROBLEM TO BE SOLVED: To eliminate corrosion, and to facilitate job site work by arranging a resin coating film layer on the outside surface of a joint main body and a nut, projecting a cylinder body to the end part of a joint main body side resin coating film layer, and sealing/connecting a conduit pipe inserted into the outside surface of a bellows pipe through packing in/to a socket arranged in the end part of a nut side resin coating film layer. SOLUTION: In the connection with a metallic bellows pipe 4, first of all, a joint main body 1 and a nut 3 are set by sandwiching a spacer 5 in a state of being threadedly preengaged in the prescribed length. The bellows pipe 4 is inserted into a joint from the steel end part of the nut 3 by removing an outside surface resin coating film layer 41 of the connecting end part by the length of 4 to 5 crests from the end part. Since a crest 42 on the tip of the bellows pipe 4 pushes a projection 23 of a sleeve, after the sleeve 2 advances up to a locking position with the nut, the sleeve expands/contracts when the projection 23 is pushed by the wave crest of the bellows pipe in the locking position with the nut, so that the tip part of the bellows pipe 4 strikes on packing 13 of the airtight surface in a state of entering a first trough 43 to complete pipe inserting work.

72. 发明专利

JPH11183227A GAS METER SETTING METHOD 失效
公开(公告)号：JPH11183227A
公开(公告)日：1999-07-09
申请号：JP36375897
申请日：1997-12-17
申请人： TOKYO GAS CO LTD , HITACHI METALS LTD , SANKO GAS SEIKI KK
发明人： OKUBO ATSUSHI , SATO FUMITAKA , MINAMI TOMOYUKI , NOZAKI HIDEO , FUJIYOSHI MINORU , HASEGAWA MICHIO
IPC分类号： G01F3/22 , G01F15/18
摘要： PROBLEM TO BE SOLVED: To facilitate the setting operations by fixing a gas meter suspending unit with joints to be connected to the inlet and outlet of a gas meter and joints to be connected to entering- and outgoing-side piping to a building or a foundation and suspending a gas meter and the entering- and outgoing-side piping from the unit. SOLUTION: The suspending unit 1 has a π-shaped member 20 formed of a transverse part 22 extended in the lateral direction and down pipes 21 and 31 drooped downward beneath the transverse part 22 to the left and right. The π-shaped member 20 is fixed to the wall 2 of a building by a fixing metal 41. Gas connecting passages 19a and 33a open to the right and left end parts of the transverse part 22 and the lower end face of a leg part are formed between the end parts and the down pipes 21 and 31 adjacent to the end parts. A gas plug 13 is connected to the right side of the transverse part 22 as facing it, and a test opening 35 is connected to the connected part of the transverse part 22 and the right down pipe 31. A union nut 23 is connected to the lower end of the left down pipe 21, and a union nut 29 is connected to the lower end of the right down pipe 31.

73. 发明专利

JPH1194161A EARTHQUAKE RESISTANT PIPING STRUCTURE 失效
公开(公告)号：JPH1194161A
公开(公告)日：1999-04-09
申请号：JP25720897
申请日：1997-09-22
申请人： HITACHI METALS LTD
发明人： MINE NAOKI , NOZAKI HIDEO
IPC分类号： F16L27/12
摘要： PROBLEM TO BE SOLVED: To maintain stable displacement absorbing capacity over a long period of time by providing an L-shape flexible pipeline with flexible pipes of specified length connected almost in the right-angled direction through a joint part, and piping the L-shape flexible pipeline in the state of hanging down from both end parts so as to be freely movable in a piping pit. SOLUTION: Pipelines such as a feed water pipeline and a drain pipeline laid in a building 13 are connected to a main pipeline in the ground 14 by earthquake resistant pipeline 20, 30 inside a piping pit 15 at the lower part of the building 13. Flexible pipes 21, 22 of the feed water pipeline 20 are to be flexible pipes with strength against elongation formed by mounting bendable metallic protective pipes to the outside of bellows pipes made of stainless steel, and are connected in L-shape by an elbow joint 23. Flexible pipes 31, 32 of the drain pipeline 30 are to be rubber flexible tubes with strength against elongation formed by mounting a synthetic resin tube to the outside of a synthetic rubber tube, and are connected in L-shape by an elbow joint 33. The respective earthquake resistant pipelines 20, 30 are hangingly supported in almost V-shape with the respective elbow joints 23, 23 placed downward.

74. 发明专利

JPH10281362A COUPLING STRUCTURE FOR CONNECTING POLYETHYLENE TUBE 失效
公开(公告)号：JPH10281362A
公开(公告)日：1998-10-23
申请号：JP8483297
申请日：1997-04-03
申请人： HITACHI METALS LTD , TOKYO GAS CO LTD
发明人： NOZAKI HIDEO , FUJIMAKI TERUAKI , HOSHINO MITSUYOSHI , SAITO ISAO
IPC分类号： F16L21/04 , F16L47/06
摘要： PROBLEM TO BE SOLVED: To effectively absorb large drawing force, by forming teeth on the inner surface of the end outer periphery of a polyethylene tube, adhering a lock ring whose outer surface is tapered to the periphery, and pressing a color ring formed with a tapered inner face into its outer periphery. SOLUTION: A polyethylene tube 8 is connected with a ductile iron tube 10, by shooting a stiffener 8b into the polyethylene tube 8, inserting an angular rubber hoop 7, a round rubber hoop 6, and a back-up ring 5 from the end, and adjusting them to a prescribed position. A stopper ring 4, a color ring 3, and lock ring 2 are adhered on the tube end. The polyethylene tube 8 is inserted into a receiving step part 12 of the iron tube 10, the back-up ring 5 is pushed to a back tapered surface of the receiving step part 12, a pressing hoop 15 is set, and the pressing hoop 15 is tightened with a bolt 17 and a nut 18. Thus, the angular rubber hoop 7 and the round rubber hoop 6 seal a gap between the receiving step part 12 and the polyethylene tube 8, and provide seal function.

75. 发明专利

JPH10132168A JOINT STRUCTURE FOR CONNECTING POLYETHYLENE PIPE TO CAST IRON PIPE 失效
公开(公告)号：JPH10132168A
公开(公告)日：1998-05-22
申请号：JP28275896
申请日：1996-10-24
申请人： TOKYO GAS CO LTD , HITACHI METALS LTD
发明人： TAKEZAWA MASAAKI , NOZAKI HIDEO , SAITO ISAO , HOSHINO MITSUYOSHI
IPC分类号： F16L21/00 , F16L21/02 , F16L21/04 , F16L21/08
摘要： PROBLEM TO BE SOLVED: To connect a polyethylene pipe to a cast iron pipe by reducing connecting work and working load in the site and simplifying a structure. SOLUTION: In a joint structure for connecting a polyethylene pipe 7 to a cast iron pipe 10 provided with a mechanical connecting part on one end, the mechanical connecting part is composed of a backup ring 3, a round rubber ring 4, a square rubber ring 5 which are sequentially mounted from the innermost side in an opening part, a pressing ring 15 to be brought into contact with the square rubber ring 5 and for pressing them to the axial direction innermost side, a bolt 17 and a nut 18 for connecting the pressing ring 15 to the cast iron pipe 10. A lock ring 1 in which a tooth part is formed on its inner surface and a taper outer surface is formed on the outer surface, and a collar ring 2 in which a taper inner surface to be fitted to the taper outer surface are mounted on the innermost side of the backup ring 3. When the polyethylene pipe 7 and the cast iron pipe 10 are fastened, the collar ring 2 is pressed to the innermost side by pressing of the pressing ring 15, and the tooth part of the lock ring 1 bites the polyethylene pipe 7. Therefore, a joint structure for connecting the polyethylene pipe to the cast iron pipe, in which a slip preventing locking part A for the polyethylene pipe 7 is constituted is provided.

76. 发明专利

JPH1026288A SHUT-OFF JOINT FOR RESIN PIPE 失效
公开(公告)号：JPH1026288A
公开(公告)日：1998-01-27
申请号：JP17835396
申请日：1996-07-08
申请人： HITACHI METALS LTD
发明人： NOZAKI HIDEO , MIZUTANI SHIGERU , TAKEZAWA MASAAKI , NISHIKATA NOBUHIRO
IPC分类号： F16L47/02 , F16L47/06 , F16L55/10
摘要： PROBLEM TO BE SOLVED: To provide a shut-off joint for resin pipe which can shut off fluid in an embedded resin pipe speedily by screw-fitting a tap body in a female screw formed in a joint main body, removing a lid body mounted in an opening of the female screw of the joint main body, and closing it by an, operation tool inserted in the main body. SOLUTION: A tap body 20 has a male screw 21 and can move vertically and freely in a barrel part by screw-fitting in a female screw 11 of a joint main body 10. When a rubber cap 22 is mounted in a lower part of the tap body 20 and the tap body 20 is moved to a lower part, it is seated on a valve seat 12 of the joint main body and a valve port of the valve seat 12 is closed. A branch port of a female screw side part is released in a condition in which the tap body 20 closes the valve port to communicate a side part connection port 16 with a female screw opening 36 of an upper part of the barrel part. Such opening and closing operations of the tap body 20 are done by removing a lid body 30, engaging a lower end of an operation bar inserted through the female screw opening 36 in the upper part of the main body with a groove 23 on a top face of the tap body 20, and rotating the tap body 20 by this operation bar.

77. 发明专利

JPH09317982A CONDUIT PASSAGE INTERRUPTING METHOD 失效
公开(公告)号：JPH09317982A
公开(公告)日：1997-12-12
申请号：JP13614996
申请日：1996-05-30
申请人： OSAKA GAS CO LTD , HITACHI METALS LTD
发明人： KINUGAWA MASAYA , KISHINO SOICHI , NOZAKI HIDEO
IPC分类号： F16L55/12 , F16K1/18 , F16K1/22 , F16K1/226
摘要： PROBLEM TO BE SOLVED: To improve reliability of fluid interruption and prevent actual deteriora tion of strength of a conduit by forming a long hole through at least three punching steps showing cutouts linearly arranged on a longitudinal direction of the conduit. SOLUTION: Cutouts serving as longitudinal both ends of a long hole 90 are formed, and in addition, a new cutout is formed therebetween. Leading ends of a pair of projections are cut by the new cutouts near an intersection of the arcuate cutout on both ends. An effective opening in a direction of short axis of the long hole 90 is enlarged. It is thus possible to largely set separation width between a main shaft 20 and a pressure receiving plate 30 of an interruption closer 10 inserted into a conduit 200 from the long hole 90, that is, length L of a connection shaft without limitation. After insertion and turning by 90 degrees inside the conduction pipe, accordingly, pushing spacing of a seal rubber 50 in an axial direction of the pipe is sufficiently secured. The separation spacing between the edge of the long hole and seal rubber 50 is sufficiently large after interruption.

78. 发明专利

JPH09317975A GAS METER CONNECTING JOINT 失效
公开(公告)号：JPH09317975A
公开(公告)日：1997-12-12
申请号：JP13508096
申请日：1996-05-29
申请人： HITACHI METALS LTD
发明人： NOZAKI HIDEO
IPC分类号： G01F3/22 , F16L15/04 , F16L41/02 , F16L43/00
摘要： PROBLEM TO BE SOLVED: To directly fix a joint body to a building by providing a fixation plate having a fixation part which seals a rear side opening of a joint body and is operated for fixing it to a building. SOLUTION: A joint body 20 is a rectangular box on whose rear surface an opening is formed. A partition wall 21 a formed on a center portion thereinside. A primary flow passage 22 is arranged on a left side, while a secondary flow passage 23 is arranged on a right side. The rear side opening of the joint body 20 is sealed by packing and a fixed plate 24, and blocked by a bolt 25. The fixed plate 24 is extended around the joint body 20 to form fixer to a building. An inflow port A connected to a primary standing pipe 33 and an inlet pipe connection port C connected to an inlet pipe side connection port 31 are formed on the primary side flow passage 22. An outlet pipe connection port D connected to an upper outlet side connection port 32 of a gas member 30 and an outflow port B connected to a secondary side descanding pipe 34 are formed on the side of the secondary side flow passage 23.

79. 发明专利

JPH09303650A RISER PIPE FOR CONNECTING GAS METER 失效
公开(公告)号：JPH09303650A
公开(公告)日：1997-11-28
申请号：JP12291396
申请日：1996-05-17
申请人： HITACHI METALS LTD , TOKYO GAS CO LTD
发明人： ANAMIZU TAKASHI , MINAMI TOMOYUKI , FUKUSHIMA SHUJI , NOZAKI HIDEO , FUJIYOSHI MINORU
IPC分类号： F16L17/02 , F16L33/26 , F16L57/00 , F16L58/04
摘要： PROBLEM TO BE SOLVED: To shutout a plastic pipe for protecting it from an outside environment so as to solve the problem such that it is deteriorated by ultraviolet by fitting a metal bellows pipe connected to a feed gas meter through a packing to the upper end of the plastic pipe erected on the ground, whose lower end is connected to a plastic pipe which is laid in the underground. SOLUTION: A riser pipe is formed by connecting the plastic pipe 30 arranged on a lower part thereof and a metal bellows pipe 40 arranged on an upper part there of to each other. The metal bellow pipe 40 is connected to a gas meter through a gas meter unit on the upper end thereof, it is inserted into the plastic pipe 30, and it is covered with a resin film 41 ion an outer surface. The plastic pipe 30 is connected by a plastic pipe which is laid on the underground and a joint, erected on the ground, and its outer surface is covered with a protecting pipe 50. A male screw 54 screwed around the female screw 31 of the plastic pipe is arranged on the upper inner surface of the protecting pipe 50, a packing 20 which is screwed ion the plastic pipe 30 and mounted on the wave recesses/projection part of the metal bellows pipe 40 is compressed, and the packing 20 is sealed between the plastic pipe 30 and the metal bellows pipe 40.

80. 发明专利

JPH09280445A GAS METER CONNECTING COUPLING 失效
公开(公告)号：JPH09280445A
公开(公告)日：1997-10-31
申请号：JP9263296
申请日：1996-04-15
申请人： HITACHI METALS LTD
发明人： NOZAKI HIDEO , FUKUSHIMA SHUJI
IPC分类号： F16L43/00 , F16L27/12 , F17D1/02
摘要： PROBLEM TO BE SOLVED: To improve the workability of a gas meter connecting piping and reduce a gas meter installation space by fixing a secondary side relay coupling having a horizontal part for mounting to supporting plate having a horizontal part for mounting from a vertical direction, and connecting a gas supply side piping and a gas consumption installation side piping to each other by a flexible pipe. SOLUTION: A horizontal part for mounting 22 for attaching a primary side relay coupling 30 and a secondary side relay coupling 40 on a supporting plate 20 fixed to a building, is arranged in this gas meter connecting coupling, and a gas supply side piping connecting opening 33 and the inlet side connecting opening 34 of a gas meter 10 are formed in the coupling main body 31 of the primary side relay coupling 30. While, a gas consumpter side piping connecting opening 43 and the delivery pipe side connecting opening 44 of the gas meter 10 are formed in the main body 41 of the secondary side relay coupling 40. Horizontal parts for mounting 32, 42 are respectively arranged to the primary side relay coupling 30 and the secondary side relay coupling 40 so that the primary side relay coupling 30 and the secondary side relay coupling 40 are attached to the supporting plate 20 from an upper direction with easy work, and the horizontal mounting parts 32, 42 are overlapped on the horizontal mounting part 22, and threadedly fixed thereto from a vertical direction by machine screws and the like, for example, hexagon socket head cap screws.

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