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1. 发明专利

JPH05230300A CHLORINE-WATER-RESISTANT RUBBER COMPOSITION AND RUBBER PRODUCT FORMED THEREFROM 失效
公开(公告)号：JPH05230300A
公开(公告)日：1993-09-07
申请号：JP3642792
申请日：1992-02-24
申请人： HITACHI METALS LTD , TOHOKU RUBBER , HITACHI CABLE
发明人： INAGAKI MITSUSACHI , HOSHINO NOBUO , SHIMAZAKI YUKIO , MURAKAMI OSAMU , YAGYU HIDEKI
IPC分类号： C08L23/16 , C08L23/00 , C08L23/18 , C08L23/22 , C08L27/12
摘要： PURPOSE:To obtain an inexpensive rubber compsn. excellent in chlorine water resistance by blending a blend rubber comprising an ethylene-propylene rubber or the same and a butyl rubber with a fine fluororesin powder. CONSTITUTION:A blend rubber comprising an ethylene-propylene rubber, or the ethylene-propylene rubber and a butyl rubber is blended with a fine fluororesin powder to obtain a chlorine-water-resistant rubber compsn. Since the conventional ethylene-propylene rubber is good but inferior in chlorine water resistance to fluororubbers, etc., members formed therefrom are gradually eroded when used in water service pipings for a long time to have problems such as softening, a decrease in strength and an increase in the percentage of permanent deformation, and are quickly eroded and deteriorated particularly when used in hot water service pipings because of contact thereof with high- temp. chlorine water to have a problem of short practical service life. The title rubber compsn., which have solved the problems of the prior art, is inexpensive and excellent in chlorine water resistance.

2. 发明专利

JPH05164286A ELECTRIC FUSION BONDING TYPE PLASTIC TUBE FITTING 失效
公开(公告)号：JPH05164286A
公开(公告)日：1993-06-29
申请号：JP32726991
申请日：1991-12-11
申请人： TOKYO GAS CO LTD , HITACHI METALS LTD
发明人： ANAMIZU TAKASHI , INAGAKI MITSUSACHI , NOZAKI HIDEO , KATO TAKESHI , IKEDA MITSUO
IPC分类号： B29C65/36 , B29C65/34 , F16L47/02
摘要： PURPOSE:To provide a tube fitting, which is easily adaptable to tube connection, injection molding and change of specifications for special form tube fittings and various shapes, by bonding both ends of an intermediate member through electric fusion bonding to the respective one ends of a pair of connecting members, to whose opposite ends plastic tubes are to be connected. CONSTITUTION:A pair of connecting members 10 and 11 are provided so as to have the internal diameter, into which a pair of plastic tubes to be connected to the connecting members 10 and 11 can be inserted, and in addition, two series of electric heating wires 12 and 17 are buried in the respective internal peripheries. Furthermore, two series of connector pins 13 and 14 are buried in both ends of the respective connecting members 10 and 11 so as to project outwards, and in addition, both ends of the respective electric heating wires 12 and 17 are connected to the connector pins 13 and 14. Furthermore, the respective one ends 15 and 16 of the respective connecting members 10 and 11 are engaged with both ends of an intermediate member 60. Then, the respective connecting members 10 and 11 are bonded to the intermediate member 60 by electric fusion bonding through supplying current to the electric heating wires 12 of the engaged connecting members 10 and 11 from a controller 3. On the other hand, in order to connect tubes, electric fusion bonding is performed by supplying current to another electric heating wires 17 after inserting the respective tubes into the respective opposite ends of the respective connecting members 10 and 11.

3. 发明专利

JPS5270940A METHOD OF BREAKING GATE OF CASTING BY UTILIZING TUMBLER 失效
公开(公告)号：JPS5270940A
公开(公告)日：1977-06-13
申请号：JP14012076
申请日：1976-11-24
申请人： HITACHI METALS LTD
发明人： NAGAOKA HIDETAKA , INAGAKI MITSUSACHI , SUGIMOTO SHIYUN
IPC分类号： B22D31/00

4. 发明专利

JPS51126962A METHOD AND APPARATUS WORKING PIPE JOINTS 失效
公开(公告)号：JPS51126962A
公开(公告)日：1976-11-05
申请号：JP5139875
申请日：1975-04-30
申请人： HITACHI METALS LTD
发明人： ITOU HISAAKI , INAGAKI MITSUSACHI
IPC分类号： B21C37/29 , B21C37/28 , B21D43/12 , B21D51/00 , B30B13/00

5. 发明专利

JPH09207225A ELECTRO-FUSION WELDER AND METHOD FOR TURNING ON ELECTRICITY USING THAT 失效
公开(公告)号：JPH09207225A
公开(公告)日：1997-08-12
申请号：JP1847696
申请日：1996-02-05
申请人： HITACHI METALS LTD
发明人： INAGAKI MITSUSACHI , INOUE YASUYUKI
IPC分类号： F16L47/02 , B29C65/34 , B29L23/00
摘要： PROBLEM TO BE SOLVED: To obtain always normal fusion weld connection by removing an aging-like error generated in electro-fusion welding operation. SOLUTION: This electro-fusion welder supplies fusion weld energy En to an electro-fusion weld joint 1 having a heating wire 2 buried in a fusion weld part of a joint main body 6, and connecter pins 4, 4 connected to both ends of the heating wire 2 by connecting mechanically terminals to the connecter pins 4, 4. In this case, a means is provided wherein a current value determining the fusion weld energy En is classified into a plurality of steps (11, 12, 13...), and constant current control En =I Rt (I=11, 12, 13...) by a plurality of constant current values is carried out.

6. 发明专利

JPH05164288A ELECTRIC FUSION BONDING TYPE PLASTIC TUBE FITTING 失效
公开(公告)号：JPH05164288A
公开(公告)日：1993-06-29
申请号：JP32727191
申请日：1991-12-11
申请人： TOKYO GAS CO LTD , HITACHI METALS LTD
发明人： ANAMIZU TAKASHI , INAGAKI MITSUSACHI , KATO TAKESHI , NISHIKATA NOBUHIRO
IPC分类号： B29C65/36 , B29C65/34 , F16L47/02
摘要： PURPOSE:To provide a tube fitting, which can be formed and connected easily, by integrally connecting both ends of an intermediate member to the respective opposite ends or a pair of connecting members, which have been provided with an electric heating wire arranged at an internal periphery of the end, into which a tube is to be inserted, and a connector pin arranged at an external periphery. CONSTITUTION:A pair of connecting parts 10 and 11 have respective sleeves 15 and 16 having male threads at the respective central sides and internal diameters into which respective plastic tubes to be connected to the connecting parts 10 and 11 can be inserted. In addition, respective electric heating wires 12 are buried in the internal periphery. Furthermore, respective connector pins 13 and 14 are buried at both ends of the respective connecting members 10 and 11 so as to project outwards respectively, and both ends of the electric heating wires 12 are connected to the connector pins 13 and 14. Furthermore, respective female threads 61 and 62 formed on both ends of an intermediate member 60 are engaged with the respective male threads of the respective connecting members 10 and 11 through packings 63. In order to connect tubes by this tube fitting, the respective tubes are fusion-bonded with this tube fitting by supplying current to the electric heating wires 12 after inserting the tubes into the respective opposite sides of the respective connecting members 10 and 11.

7. 发明专利

JPH05157189A ELECTRIC FUSION TYPE PLASTIC PIPE FITTING 失效
公开(公告)号：JPH05157189A
公开(公告)日：1993-06-22
申请号：JP32029691
申请日：1991-12-04
申请人： TOKYO GAS CO LTD , HITACHI METALS LTD
发明人： ANAMIZU TAKASHI , INAGAKI MITSUSACHI , KATO TAKESHI , NOZAKI HIDEO
IPC分类号： B29C65/36 , B29C65/34 , B29D23/00 , B29L31/24 , F16L47/02
摘要： PURPOSE:To perform simple and reliable melting and joining of resin by a method wherein a plurality of inner cylinders in a pipe fitting and a central part except the mounting area of a resin pipe are surrounded with an outer cylinder member formed of thermoplastic molten resin and a heating wire disposed on the outer surface of the inner cylinder member is energized. CONSTITUTION:In an electric fusion type plastic pipe fitting 1, a main part comprises inner and outer cylinder members 10 and 20. In this case, the inner cylinder member 10 is formed in the shape of a thin cylinder with a given bore formed of thermoplastic resin and a groove 12 in which a heating wire 11 is placed is formed in the outer surface thereof. The connector pins 13 and 14 of the heating wire 11 are disposed to the outer surfaces of two ends. The inner members 10 are arranged to the mounting parts of resin pipes 50, intended to be interconnected, at the two end parts of the pipe fitting 1. Further, the outer surface of the inner cylinder member 10 and the central part of the resin pipe 50 are surrounded with the outer cylinder member 20 for integral formation. By feeding a power to the heating wire 11, only the outer peripheral surface of the resin pipe 50 is heated with high efficiency and the resin pipes 50 are properly molten and interconnected.

8. 发明专利

JPS6199538A Method and device for inserting core 失效
标题翻译：插入核心的方法和装置
公开(公告)号：JPS6199538A
公开(公告)日：1986-05-17
申请号：JP22135484
申请日：1984-10-23
申请人： Hitachi Metals Ltd , Osaka Gas Co Ltd
发明人： SUGIMOTO SHUN , INAGAKI MITSUSACHI , DEGUCHI NOBUAKI , KAWASHIMA TOSHIYA , SUGA HIROZO , MATSUBARA TOSHIHIKO , IPPONMATSU MASAMICHI , OGAWA TAKUYA
IPC分类号： B22C9/10 , B22C9/12 , B22C25/00
CPC分类号： B22C9/12 , B22C9/10
摘要： PURPOSE:To eliminate the need for a core conveying line and a receiving tray for conveying many cores and to simplify jigs and devices in a method for inserting cores which synchronizes a molding line for casting and a core molding machine by cooling quickly the cores molded at an ordinary temp. or above by a cooling source. CONSTITUTION:Uncured sand is inserted from a hopper 1 into a receiver 2 and is packed into a metallic mold for molding core positioned beneath a receiver 2 from the top surface of an upper mold box 4a of said mold by a box carrier 6 which is moved back and forth by the compressed air of a blow head 3. The upper and lower mold boxes 4a, 4b are kept heated at all times and the uncured sand therein is quickly solidified by the effect of the thermosetting resin incorporated their. The box 4a is then hoisted by a core stripper 7 and is transferred onto a heat insulating holding tank 9 contg. liquid nitrogen by a carriage 8. The core 12 held in the box 4a is ejected by ejector pins 13 onto a dipping plate 11 in the upper part of the tank 9 and is dipped and cooled by a lifter 14 into the nitrogen 10. The core 12 on the plate 11 moved upward by the lifter 14 is sucked by a suction plate 15 upon completion of the cooling and is inserted into a drag mold 17b.
摘要翻译：目的：为了消除对用于输送多个芯的芯输送线和接收托盘的需要，并且在用于插入芯的方法中简化夹具和装置，所述方法同步铸造用成型线和芯成型机，通过快速冷却在一个普通的温度或以上。构成：将未固化的砂从料斗1插入到接收器2中，并通过盒式运载器6被包装在一个金属模具中，该金属模具用于模制位于接收器2下面的模具，上下模具盒4a，4b始终保持加热，其中未固化的砂通过包含它们的热固性树脂的作用而迅速凝固。然后盒4a由芯剥离器7提升，并被转移到隔热容纳槽9上。通过滑架8保持液氮。保持在盒4a中的芯12由喷射销13喷射到罐9的上部的浸渍板11上，并通过升降器14浸入并冷却成氮10。由升降器14向上移动的板11上的叶片12在冷却完成时被吸板15吸入并被插入拖模17b中。

9. 发明专利

JPH1194175A ELECTRIC RUSION TYPE SAME DIAMETER HOT LINE SERVICE TEE 失效
公开(公告)号：JPH1194175A
公开(公告)日：1999-04-09
申请号：JP26005097
申请日：1997-09-25
申请人： HITACHI METALS LTD
发明人： INAGAKI MITSUSACHI , MIZUTANI SHIGERU
IPC分类号： F16L47/02
摘要： PROBLEM TO BE SOLVED: To easily and inexpensively obtain electric fusion type service tee capable of performing the same diameter hot line branching by a punching work. SOLUTION: This electric fusion type same diameter hot line service tee remolds saddle part of electric fusion type different diameter hot line service tee 1B so as to conform to the outside surface of a pipe to be connected of a bore (a)/cross-sectional area A by using this different diameter hot line service tee 1B which has an inside surface 22 conforming to a pipe of a bore (b) which is larger than a bore (a)/cross-sectional area A and is provided with a saddle part 3 burying a heating member 7 in this inside surface 22, a drum part 2 provided with a punching tool 10 for forming a punch hole of a bore (a)/cross- sectional area A and a spigot part 4 which branches from this drum part 2 and takes out a branch pipe of the bore (a)/cross-sectional area A and is preliminarily manufactured.

10. 发明专利

JPH1194130A BURIED PIPING STRUCTURE OF SYNTHETIC RESIN PIPE AND ITS PIPE JOINT 失效
公开(公告)号：JPH1194130A
公开(公告)日：1999-04-09
申请号：JP26005397
申请日：1997-09-25
申请人： HITACHI METALS LTD
发明人： INAGAKI MITSUSACHI , MIZUTANI SHIGERU
IPC分类号： F16L1/024 , F16L39/00 , F16L41/04
摘要： PROBLEM TO BE SOLVED: To heighten earthquake resistance and supply a large capacity of flow by providing two saddle type branch pipe joints at a specified distance on the outer peripheral surface of a main pipe, and communicating the branch takeoff ports of the respective branch pipe joints through a different diameter T-shape pipe joint in piping structure of a synthetic resin pipe piped underground. SOLUTION: Two saddle type branch pipe joints 20 are disposed at a specified distance on the outer peripheral surface of a main pipe 10 made of polyethylene and piped in an underground excavated hole 11, and these branch pipe joints 20 are connected to the main pipe 10 by electric fusion by applying a current to each connector 20a through a cable. Each branch pipe joint has a boring cutter built in a through hole of a joint body 21 so as to be able to bore the main pipe 10 after electric fusion connection. After boring, a cap 23 is thread-fastened to the joint body 21 through an O-ring to keep airtightness. Branch takeoff ports 22 of the right and left branch pipe joints 20 are connected and communicated by an electric-fusion-welded type T-shape pipe joint 24.

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