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31. 发明专利

JPH07103380A FLEXIBLE PIPE JOINT 失效
公开(公告)号：JPH07103380A
公开(公告)日：1995-04-18
申请号：JP24664193
申请日：1993-10-01
申请人： TOKYO GAS CO LTD , HITACHI METALS LTD , SANKO GAS SEIKI KK
发明人： FUJIYOSHI MINORU , UENO TOSHIYUKI , SHIKAMATA SHINICHI , ANAMIZU TAKASHI , SAITO MORIO , SATO FUMITAKA
IPC分类号： F16L33/00 , F16L33/28
摘要： PURPOSE:To improve connecting workability by inserting a flexible pipe into a temporarily assembled fitting mainframe and a nut and sliding the nut into a really fastened condition to compress a seal packing with a stopper and lock the flexible pipe. CONSTITUTION:During connection, a joint main body 10 is locked to a nut 20 in a temporarily assembled condition in such a state that a seal packing 30 and a stopper 40 are mounted to a pipe socket 18 in the joint main body 10. When a flexible pipe 50 is put through the rear end of the nut 20 in such a state, the pipe 50 is inserted into the packing 30 while pushing and enlarging the inside face of a key-shaped locking portion 43 of the stopper 40 at the end 51 of the pipe, and nut in contact with an O-ring 14 mounted on a pipe supporting wall 17. At this time, the stopper 40 is fitted to the outer periphery of the pipe 50 by the elastic resilience of the packing 30 and a retainer ring 44. Then, when the nut 20 is slided to the fitting main frame 10, a stopper ring 11 is shrinked and fitted into a really-fastening annular groove 22 in the nut 20 to lock the nut 20 to the main body 10.

32. 发明专利

JPH0198795A CLAMPING DEVICE 失效
公开(公告)号：JPH0198795A
公开(公告)日：1989-04-17
申请号：JP25525587
申请日：1987-10-09
申请人： HITACHI METALS LTD , TOKYO GAS CO LTD
发明人： AKIYAMA SABURO , TSUTSUMI CHIAKI , TAKADA HIDEMASA , SHIBAYAMA KOKICHI , SATO FUMITAKA
IPC分类号： F16L41/06
摘要： PURPOSE: To enable the body and pipe to be fixed with simple operation by making the body to be screwed in the female screw thread of a clamp member by rotating the clamp member and a hook member to be screwed in the counter female screw thread of the clamp member to approach to or depart from each other. CONSTITUTION: When a clamp member 50 is rotated, the female screw thread 51 in the upper portion of a clamp member 50 is screwed with the male screw thread 25 of a body member 20 so that the clamp member 50 advances to the upper portion of the body member 20, and the counter female screw thread 52 in the lower portion of the clamp member 50 is screwed with the counter male screw thread 25 of a hook member 60 so that the hook member 60 is advanced to the upper portion of the clamp member 50. Thus, a U-shaped member 70 engaged by the hook 63 of the hook member 60 also moves to the upper portion with respect to the body member 20, therefore the body member 20 clamping the pipe 1 is fixed integrally with the pipe 1.

33. 发明专利

JP2003185075A LEAKAGE DETECTING METHOD 审中-公开
公开(公告)号：JP2003185075A
公开(公告)日：2003-07-03
申请号：JP2002363142
申请日：2002-12-13
申请人： SANKO GAS SEIKI KK , TOKYO GAS CO LTD , HITACHI METALS LTD
发明人： FUJIYOSHI MINORU , ANAMIZU TAKASHI , SATO FUMITAKA , OKI KATSUHIRO , UENO TOSHIYUKI
IPC分类号： G01M3/04 , F16L33/26 , F16L55/07 , G01M3/12
摘要： PROBLEM TO BE SOLVED: To provide a leakage detecting method capable of surely detecting leakage at the time of a leakage test by positively discharging to the outside a leak due to a nailing mistake. SOLUTION: In the leakage detecting method, a joint for a metal flexible pipe comprising a joint body 1 and a nut 3 to detect gas leaked from the metal flexible pipe in which the outer surface of a metal corrugated pipe 70 passing gas is coated with a synthetic resin layer 71. Gas leaking from the metal corrugated pipe reaches the joint for the metal flexible pipe through the clearance between the metal corrugated pipe and the synthetic resin layer, and passes through a selective permeation member 5 which allows gas to pass through and does not allow liquid to pass through. Thus, the leakage of gas can be detected by positively discharging the gas to the outside. COPYRIGHT: (C)2003,JPO

34. 发明专利

JP2003176888A INSERTION TYPE TUBE FITTING 审中-公开
公开(公告)号：JP2003176888A
公开(公告)日：2003-06-27
申请号：JP2002289486
申请日：2002-10-02
申请人： TOKYO GAS CO LTD , HITACHI METALS LTD , SANKO GAS SEIKI KK
发明人： MINAMI TOMOYUKI , SATO FUMITAKA , FUJINAWA YASUSHI , IGARASHI KAZUTADA , IBAYASHI MAKOTO , FUJIYOSHI MINORU , KASAI SHINYA
IPC分类号： F16L33/00 , F16L33/28
摘要： PROBLEM TO BE SOLVED: To provide an insertion type tube fitting capable of certainly sealing and attaching a bellows pipe only by pressing a nut member. SOLUTION: The insertion type tube fitting 16 for connecting the bellows pipe F is provided with a coupling body 26 of which an inner wall is stepped; a ring-like nut member 30 longitudinally slidably mounted to a tip end of the coupling body; a packing member 42 provided on the stepped part of the inner wall surface of the coupling body; a ring-like stopper member 44 butted to a tip end of the bellows pipe when the bellows pipe is inserted and inwardly inserting the bellows pipe while it is elastically expanded/contracted in a radial direction of the bellows pipe; a ring-like retainer 50 which presses the packing member upon insertion of the nut member and of which one end side can be elastically expanded/contracted in a center direction of the bellows pipe; and a stop ring member 40 for fixing the nut member when the nut member is inserted into the coupling body side. COPYRIGHT: (C)2003,JPO

35. 发明专利

JP2003113976A INSERTION PIPE JOINT 审中-公开
公开(公告)号：JP2003113976A
公开(公告)日：2003-04-18
申请号：JP2001308801
申请日：2001-10-04
申请人： TOKYO GAS CO LTD , HITACHI METALS LTD , SANKO GAS SEIKI KK
发明人： MINAMI TOMOYUKI , SATO FUMITAKA , FUJINAWA YASUSHI , IGARASHI KAZUTADA , IBAYASHI MAKOTO , FUJIYOSHI MINORU , KASAI SHINYA
IPC分类号： F16L33/00 , F16L33/28
摘要： PROBLEM TO BE SOLVED: To provide a safe insertion pipe joint of a simple structure capable of facilitating disassembly for re-construction. SOLUTION: In the insertion pipe joint in which a bellows pipe F having wave shape projection and recess parts 18, 20 on an outer circumference surface is fixed by inserting the bellows pipe F into a cylindrical nut member 30 and a joint body 26 fitted slidably each other in a longitudinal direction and by pressing the nut member into the joint body 26 so as to make a retainer member 52 provided in the joint body engage with the recess part of the bellows pipe, an elastic stop member 36 put to always apply force on a main groove part 32 formed on an outer circumference surface of the nut member in a diameter reducing direction and allowing the nut member to slide in pressing-in direction and a diameter reducing step part 47 engaging with the elastic stop member to materialize a lock condition with the joint body when the nut member is pressed in are included, and a sleeve member 44 slidable in a longitudinal direction of the nut member and a collar member 46 detachably and attachably provided to regulate slide movement of the sleeve member are provided.

36. 发明专利

JP2002340649A UNIT FOR SUSPENDING GAS METER 失效
公开(公告)号：JP2002340649A
公开(公告)日：2002-11-27
申请号：JP2001144636
申请日：2001-05-15
申请人： TOKYO GAS CO LTD , HITACHI METALS LTD , SANKO GAS SEIKI KK
发明人： OKUBO ATSUSHI , SATO FUMITAKA , NOZAKI HIDEO , MATSUBA SATORU , FUJINAWA YASUSHI , SATO YOICHI
IPC分类号： G01F3/22
摘要： PROBLEM TO BE SOLVED: To provide a unit for suspending gas meter for which positioning and attaching work to a building wall or the like can be easily and skillfully conducted. SOLUTION: A patch 111 of a fixing hardware 100 is made to contact with the building wall or the like and to be fixed to thereto. The patch 111 comprises a central plate part 112 and a fixing-to-wall part 113. Screws 115 for attaching a connection metal are attached to vicinities of four corners of the central plate part 112 in a temporarily tightened condition. A connection metal 121 of the fixing hardware 100 is fixed to a reverse face of a unit body 90. The connection metal 121 comprises a ridged part 122 and patch fixing parts 124, 125. Four clearance holes 128 are opened in the patch fixing parts 124, 125 to correspond to the four screws 115 implanted to the patch 111. The each clearance hole 128 is opened by a size capable of passing a head part of the screw 115 therethrough with a margin. A groove 129 for setting the screw joined to the clearance hole 128 to be extended upwards is cut in an upper part of the each clearance hole 128.

37. 发明专利

JP2001349478A RISER JOINT FOR CONNECTING GAS METER 失效
公开(公告)号：JP2001349478A
公开(公告)日：2001-12-21
申请号：JP2000168643
申请日：2000-06-06
申请人： HITACHI METALS LTD , TOKYO GAS CO LTD
发明人： OKUBO ATSUSHI , SATO FUMITAKA , NOZAKI HIDEO
IPC分类号： F16L21/00 , F16L9/02 , F16L57/00 , F16L59/147
摘要： PROBLEM TO BE SOLVED: To provide a riser joint for connecting a gas meter free from corrosion, capable of easily performing piping work in the field, providing safety at a fire, suitably connecting with a gas meter on the ground by rising up and piping from an underground buried part, and connecting a resin pipe and a metal bellows pipe. SOLUTION: The riser joint for connecting a gas meter is provided with a joint body 10 for connecting with a metal pipe 19 on an one end, a resin coating layer 12 formed by injecting thermoplastic resin on an outer surface of the joint body, and a piping body 14 for fusion-splicing with a thermoplastic resin pipe 1, which is buried and piped, on an end part of the resin coating layer on an other end. The joint body includes the underground buried part and a rising-up part for connecting with the metal pipe. In the underground buried part, a heat insulating member 31 is attached between the joint body 10 and the resin coating layer 12.

38. 发明专利

JP2000193147A RISER PIPE FOR FLUID PIPING 失效
公开(公告)号：JP2000193147A
公开(公告)日：2000-07-14
申请号：JP37441198
申请日：1998-12-28
申请人： HITACHI METALS LTD , TOKYO GAS CO LTD
发明人： OKUBO ATSUSHI , SATO FUMITAKA , NOZAKI HIDEO
IPC分类号： F16L33/00 , F16L5/00 , F16L33/28
摘要： PROBLEM TO BE SOLVED: To easily connect an underground buried plastic pipe to equipment piping on the ground by comprising an upper packing for sealing the plastic pipe and a bellows pipe, and mounting a protection pipe for covering an outer surface of the plastic pipe raised on the ground. SOLUTION: A metallic bellows pipe 40 on the upper side is inserted into a plastic pipe 30 raised from the ground, and comprises a resin coating 41 of vinyl chloride on its outer surface. A lower end of the plastic pipe 30 is an end part to be connected to an underground buried plastic pipe, and the plastic pipe 30 comprises a bent part 6 on its intermediate part, and a male screw 31 on its upper end outer surface. A protection pipe 50 is made of a weather-proof material having the durability to the outside air and ultraviolet ray, such as metal, vinyl chloride and the like, and covers the outer surface of the plastic pipe 30 raised to the ground for protecting the plastic pipe 30 from the damage and the deterioration by ultraviolet ray. Whereby the corrosion can be prevented, and the deterioration by ultraviolet ray can be also prevented.

39. 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.

40. 发明专利

JPH07103381A FLEXIBLE PIPE JOINT 失效
公开(公告)号：JPH07103381A
公开(公告)日：1995-04-18
申请号：JP24664393
申请日：1993-10-01
申请人： TOKYO GAS CO LTD , HITACHI METALS LTD , SANKO GAS SEIKI KK
发明人： FUJIYOSHI MINORU , SAKUMI SEIICHIROU , SHIKAMATA SHINICHI , ANAMIZU TAKASHI , SAITO MORIO , SATO FUMITAKA
IPC分类号： F16L33/00 , F16L33/28
摘要： PURPOSE:To provide a joint which is connectable with one step and uniformly held on a flexible pipe by a stopper. CONSTITUTION:A flexible pipe joint consists of a stopper 50 mounted in a stopper groove 16, which has the tapered inside face 17 so as to be enlarged from the end toward the corner, provided on the inside face of a joint main body where a flexible pipe 20 is inserted, an elastic member to energize the stopper 50 mounted in a spring mounted chamber 15 following the stopper groove 16 to the small-diameter side of the tapered inside face 17, and a packing 18 to seal a packing chamber 14 provided on the corner side of the spring mounted chamber 15 spaced from a wall to the outside face of the flexible pipe 20 mounted therein. The stopper 50 is mounted with both sides held between a retainer guide 51, which has rings spaced one from the other on both sides and connected together at multiple points in the peripheral direction, the outside face of one ring being put in contact with the inside face of the joint main body in a slidable manner, and the rings of the retainer guide 51, so that the inside face can be locked to the outside face of the flexible pipe 20.

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