US20150074976A1 - Joint member manufactured using pipe and manufacturing method of the same - Google Patents

Joint member manufactured using pipe and manufacturing method of the same Download PDF

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Publication number
US20150074976A1
US20150074976A1 US14/548,354 US201414548354A US2015074976A1 US 20150074976 A1 US20150074976 A1 US 20150074976A1 US 201414548354 A US201414548354 A US 201414548354A US 2015074976 A1 US2015074976 A1 US 2015074976A1
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United States
Prior art keywords
pipe
press
joint member
manufacturing
joint
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Abandoned
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US14/548,354
Inventor
Seung-li OH
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Kofulso Co Ltd
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Kofulso Co Ltd
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Filing date
Publication date
Application filed by Kofulso Co Ltd filed Critical Kofulso Co Ltd
Priority to US14/548,354 priority Critical patent/US20150074976A1/en
Publication of US20150074976A1 publication Critical patent/US20150074976A1/en
Assigned to KOFULSO CO., LTD. reassignment KOFULSO CO., LTD. ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: OH, SEUNG-LI
Abandoned legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21J—FORGING; HAMMERING; PRESSING METAL; RIVETING; FORGE FURNACES
    • B21J5/00—Methods for forging, hammering, or pressing; Special equipment or accessories therefor
    • B21J5/02—Die forging; Trimming by making use of special dies ; Punching during forging
    • B21J5/025—Closed die forging
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
    • B23P15/00—Making specific metal objects by operations not covered by a single other subclass or a group in this subclass
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21J—FORGING; HAMMERING; PRESSING METAL; RIVETING; FORGE FURNACES
    • B21J5/00—Methods for forging, hammering, or pressing; Special equipment or accessories therefor
    • B21J5/06—Methods for forging, hammering, or pressing; Special equipment or accessories therefor for performing particular operations
    • B21J5/12—Forming profiles on internal or external surfaces
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L25/00—Construction or details of pipe joints not provided for in, or of interest apart from, groups F16L13/00 - F16L23/00
    • F16L25/0036—Joints for corrugated pipes
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L41/00—Branching pipes; Joining pipes to walls
    • F16L41/08—Joining pipes to walls or pipes, the joined pipe axis being perpendicular to the plane of a wall or to the axis of another pipe
    • F16L41/14—Joining pipes to walls or pipes, the joined pipe axis being perpendicular to the plane of a wall or to the axis of another pipe by screwing an intermediate part against the inside or outside of the wall
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00—Metal working
    • Y10T29/49—Method of mechanical manufacture
    • Y10T29/49826—Assembling or joining
    • Y10T29/49863—Assembling or joining with prestressing of part
    • Y10T29/4987—Elastic joining of parts
    • Y10T29/49872—Confining elastic part in socket
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00—Metal working
    • Y10T29/49—Method of mechanical manufacture
    • Y10T29/4998—Combined manufacture including applying or shaping of fluent material

Definitions

  • the present invention relates to a joint member manufactured using a pipe and a manufacturing method of the same, and more particularly, to a joint member that is manufactured using a stainless steel pipe in various forms by pressing work and insert press-in work without needing a hazard inspection due to lead hazards.
  • a joint member for corrugated pipes or straight pipes has a spiral portion formed on the outer circumferential surface thereof or a spiral groove formed on a through hole, and the through hole has a stepped jaw or an inclined jaw portion, to which joint means having a packing and a compression ring can be mounted in a proper position.
  • a member that has a spiral groove formed on the inner circumference of a pipe is used at a connection portion of the joint member, which is welded integrally with various tools, and, to which the corrugated pipe or the straight pipe is connected.
  • the joint member is additionally joined to the connection portion, and then, the corrugated pipe or the straight pipe is connected to the joint member.
  • such a joint member is manufactured of brass casting, but recently, tends to be manufactured of stainless material due to controversy of lead hazards.
  • the joint member in order to form the stepped jaw or the inclined jaw portion on the through hole, the joint member must be manufactured through a precise casting method, but it causes an increase of manufacturing costs and a productivity loss. Accordingly, manufacturers, who work in the art, are in dilemma.
  • the present invention has been made to solve the above-mentioned problems occurring in the prior arts, and it is an object of the present invention to provide a joint member, which includes a retaining portion formed by pressing a stainless steel pipe that is cut into a predetermined length, a joining portion having a spiral portion or a spiral groove, and an insert member made of synthetic resin and being pressed into the pipe so that a packing and a compression ring can be located in a proper position.
  • the joint member may be a bolt or a nut, which is a component of joint means used for connecting a corrugated pipe or a straight pipe, or a connection portion that is welded integrally to a machine, such as a distributor for a boiler, to which the corrugated pipe or the straight pipe is connected.
  • a joint member including: a metal member having a retaining portion formed by pressing a stainless steel pipe cut into a predetermined length and a joining portion formed on the stainless steel pipe; and an insert member made of synthetic resin, the insert member being pressed to the retaining portion and mounted on the inner circumference of the metal member to locate joint means in a proper position.
  • a nut portion is formed on the outer circumference of the metal member, which is the stainless steel pipe, by pressing work, so that a corrugated pipe or a straight pipe can be joined easily.
  • a method of manufacturing a joint member using a pipe including: a press-molding process of manufacturing a metal member of half-finished goods by pressing a stainless steel pipe, which is cut into a predetermined length, to form a retaining portion; a screw forming process of forming a joining portion on the metal member of the half-finished goods; and an insert press-in process of pressing an insert member, which is made of synthetic resin material, to the retaining portion.
  • the press-molding process includes a first press-molding process of molding the retaining portion ( 11 ); and a second press-molding process of molding a nut portion ( 13 ) on the outer circumference of the pipe.
  • the present invention can manufacture joint members for various use purposes using a stainless steel pipe only by pressing work and insert press-in work, whereby joint members, which can calm the controversy of lead hazards, can be effectively manufactured.
  • FIGS. 1 a, 1 b and 1 c are views showing a manufacturing process of a joint member according to the present invention
  • FIG. 2 is a perspective view showing an example that the joint member according to the present invention is mounted on connection portions (see FIG. 1 a ) of various machines;
  • FIG. 3 is a sectional view of FIG. 2 ;
  • FIG. 4 is a perspective view showing an example that the joint member according to the present invention is a nut (see FIG. 1 b );
  • FIG. 5 is a sectional view of FIG. 4 ;
  • FIG. 6 is a perspective view showing an example that the joint member according to the present invention is a bolt (see FIG. 1 c );
  • FIGS. 7 a and 7 b are sectional views showing examples of a joining portion of FIGS. 6 ;
  • FIG. 8 is a perspective view, in a partial section, showing a state where a corrugated pipe is connected using the joint member according to the present invention.
  • FIGS. 1 a, 1 b and 1 c are views showing a manufacturing process of a joint member according to the present invention.
  • the manufacturing process of the joint member according to the present invention includes: a press-molding process of manufacturing a metal member 10 of half-finished goods by pressing a stainless steel pipe, which is cut into a predetermined length, to form a retaining portion 11 ; a screw forming process of forming a joining portion 12 on the metal member 10 of the half-finished goods; and an insert press-in process of pressing an insert member 20 , which is made of synthetic resin material, to the retaining portion 11 .
  • FIG. 1 a illustrates a state where a connection portion welded integrally to a machine, such as a distributor 30 , is manufactured as the joint member of the present invention.
  • the press-molding process includes a first press-molding process of molding the retaining portion 11 , 111 ; and a second press-molding process of molding a nut portion 13 , 131 formed on the outer circumference of the pipe.
  • the joint member according to the present invention is manufactured as a nut or a bolt for a connection device having the nut portion 13 , 131 on the outer face thereof.
  • Molds 41 and 42 that are used for the press-molding process may be a well-known press device having a shape corresponding to the shape of the metal member 10 , 100 , 1000 to be manufactured.
  • a mold 42 that is used for the second press-molding process may be a press device that includes at least two split stretchers 43 forming a hexagonal shape and being located inside the press device and a press-in tool 44 for extruding out while the stretchers 43 goes down.
  • FIGS. 2 and 3 illustrate an example that the connection portion welded integrally to the machine, such as the distributor 30 , is manufactured as the joint member according to the present invention. Because the retaining portion 11 is welded integrally to the distributor 30 , the connection portion serves as the joint member, on which a packing 31 and a compression ring 32 can be mounted by the insert member 20 , 120 . In this instance, the joining portion 121 is formed on the outer circumference of the connection portion of the joint member.
  • FIGS. 4 and 5 illustrate an example that the joint member having the nut portion 13 formed by the second press-molding process is manufactured as a nut, and in this instance, the joining portion 121 is a spiral groove.
  • FIGS. 6 and 7 a and 7 b illustrate an example that the joint member having the nut portion 131 formed by the second press-molding process is manufactured as a bolt, and in this instance, the joint member has a small diameter portion 14 extending from the nut portion 131 in the first press-molding process.
  • the joining portion 12 formed on the metal member 1000 having the small diameter portion 14 may selectively have a spiral groove 12 a or a spiral portion 12 b according to kinds of the bolt, which is the joint member.
  • FIG. 8 is a perspective view, in a partial section, showing a state where a corrugated pipe is connected using the nut and the bolt illustrated in FIGS. 4 to 7 a , which are the joint members manufactured according to the present invention.
  • joint means including the packing 31 and the compression ring 32 is mounted at a predetermined position by the insert member 20 , a corrugated pipe or a straight pipe can be connected and mounted with sealability.
  • the joint means may have one of various structures besides the above, and the insert member 20 is manufactured according to the structure of the joint means.
  • the joint member according to the present invention which is manufactured as the nut or the bolt, to the connection portion of various machines includes: a metal member 10 having a retaining portion 11 formed by pressing a stainless steel pipe cut into a predetermined length and a joining portion 12 formed on the stainless steel pipe; and an insert member 20 made of synthetic resin, the insert member 20 being pressed to the retaining portion 11 and mounted on the inner circumference of the metal member 10 to locate joint means in a proper position.
  • the metal member 100 which is a stainless steel pipe, further includes a nut 13 having a hexagonal appearance and being formed on the outer circumference of the metal member 100 by the pressing work.
  • the metal member 1000 is press-molded to have a small diameter portion 14 extending from the nut portion 131 .
  • the joining portion 12 may be the spiral portion formed on the outer circumference of the metal member 10 , 100 , 1000 or the spiral groove formed on the inner circumference of the metal member 10 , 100 , 1000 according to kinds of the joint member.
  • the joint member according to the present invention which can calm controversy of lead hazards, can be easily manufactured only by the manufacturing method including the steps of manufacturing the metal member of half-finished goods through a pressing process using the stainless steel pipe, finishing the metal member 10 by forming the joining portion thereon; and pressing the insert member 20 made of synthetic resin into the metal member 10 to locate the joint means in a proper position.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Shaping Metal By Deep-Drawing, Or The Like (AREA)

Abstract

A method for manufacturing a joint member, which includes a retaining portion formed by pressing a stainless steel pipe that is cut into a predetermined length, a joining portion having a spiral portion or a spiral groove, and an insert member made of synthetic resin and being pressed into the pipe so that a packing and a compression ring can be located in a proper position. The joint member using a pipe includes: a metal member having a retaining portion formed by pressing a stainless steel pipe cut into a predetermined length and a joining portion formed on the stainless steel pipe; and an insert member made of synthetic resin, the insert member being pressed to the retaining portion and mounted on the inner circumference of the metal member to locate joint means in a proper position.

Description

    BACKGROUND OF THE INVENTION
  • 1. Field of the Invention
  • The present invention relates to a joint member manufactured using a pipe and a manufacturing method of the same, and more particularly, to a joint member that is manufactured using a stainless steel pipe in various forms by pressing work and insert press-in work without needing a hazard inspection due to lead hazards.
  • 2. Background Art
  • In general, a joint member for corrugated pipes or straight pipes has a spiral portion formed on the outer circumferential surface thereof or a spiral groove formed on a through hole, and the through hole has a stepped jaw or an inclined jaw portion, to which joint means having a packing and a compression ring can be mounted in a proper position.
  • Moreover, a member that has a spiral groove formed on the inner circumference of a pipe is used at a connection portion of the joint member, which is welded integrally with various tools, and, to which the corrugated pipe or the straight pipe is connected. However, because the member does not have the stepped jaw or the inclined jaw portion and the joint means including the packing and the compression ring cannot be mounted thereon, the joint member is additionally joined to the connection portion, and then, the corrugated pipe or the straight pipe is connected to the joint member.
  • Typically, such a joint member is manufactured of brass casting, but recently, tends to be manufactured of stainless material due to controversy of lead hazards.
  • However, in case that the stainless material, which does not cause the controversy of lead hazards, in order to form the stepped jaw or the inclined jaw portion on the through hole, the joint member must be manufactured through a precise casting method, but it causes an increase of manufacturing costs and a productivity loss. Accordingly, manufacturers, who work in the art, are in dilemma.
    • SUMMARY OF THE INVENTION
  • Accordingly, the present invention has been made to solve the above-mentioned problems occurring in the prior arts, and it is an object of the present invention to provide a joint member, which includes a retaining portion formed by pressing a stainless steel pipe that is cut into a predetermined length, a joining portion having a spiral portion or a spiral groove, and an insert member made of synthetic resin and being pressed into the pipe so that a packing and a compression ring can be located in a proper position.
  • In the present invention, the joint member may be a bolt or a nut, which is a component of joint means used for connecting a corrugated pipe or a straight pipe, or a connection portion that is welded integrally to a machine, such as a distributor for a boiler, to which the corrugated pipe or the straight pipe is connected.
  • To accomplish the above object, according to the present invention, there is provided a joint member including: a metal member having a retaining portion formed by pressing a stainless steel pipe cut into a predetermined length and a joining portion formed on the stainless steel pipe; and an insert member made of synthetic resin, the insert member being pressed to the retaining portion and mounted on the inner circumference of the metal member to locate joint means in a proper position.
  • Moreover, a nut portion is formed on the outer circumference of the metal member, which is the stainless steel pipe, by pressing work, so that a corrugated pipe or a straight pipe can be joined easily.
  • In another aspect of the present invention, there is provided a method of manufacturing a joint member using a pipe including: a press-molding process of manufacturing a metal member of half-finished goods by pressing a stainless steel pipe, which is cut into a predetermined length, to form a retaining portion; a screw forming process of forming a joining portion on the metal member of the half-finished goods; and an insert press-in process of pressing an insert member, which is made of synthetic resin material, to the retaining portion.
  • Furthermore, the press-molding process includes a first press-molding process of molding the retaining portion (11); and a second press-molding process of molding a nut portion (13) on the outer circumference of the pipe.
  • As described above, the present invention can manufacture joint members for various use purposes using a stainless steel pipe only by pressing work and insert press-in work, whereby joint members, which can calm the controversy of lead hazards, can be effectively manufactured.
    • BRIEF DESCRIPTION OF THE DRAWINGS
  • The above and other objects, features and advantages of the present invention will be apparent from the following detailed description of the preferred embodiments of the invention in conjunction with the accompanying drawings, in which:
  • FIGS. 1 a, 1 b and 1 c are views showing a manufacturing process of a joint member according to the present invention;
  • FIG. 2 is a perspective view showing an example that the joint member according to the present invention is mounted on connection portions (see FIG. 1 a) of various machines;
  • FIG. 3 is a sectional view of FIG. 2;
  • FIG. 4 is a perspective view showing an example that the joint member according to the present invention is a nut (see FIG. 1 b);
  • FIG. 5 is a sectional view of FIG. 4;
  • FIG. 6 is a perspective view showing an example that the joint member according to the present invention is a bolt (see FIG. 1 c);
  • FIGS. 7 a and 7 b are sectional views showing examples of a joining portion of FIGS. 6; and
  • FIG. 8 is a perspective view, in a partial section, showing a state where a corrugated pipe is connected using the joint member according to the present invention.
    •  DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT
  • Reference will be now made in detail to the preferred embodiment of the present invention with reference to the attached drawings.
  • FIGS. 1 a, 1 b and 1 c are views showing a manufacturing process of a joint member according to the present invention. As shown in the drawings, the manufacturing process of the joint member according to the present invention includes: a press-molding process of manufacturing a metal member 10 of half-finished goods by pressing a stainless steel pipe, which is cut into a predetermined length, to form a retaining portion 11; a screw forming process of forming a joining portion 12 on the metal member 10 of the half-finished goods; and an insert press-in process of pressing an insert member 20, which is made of synthetic resin material, to the retaining portion 11.
  • FIG. 1 a illustrates a state where a connection portion welded integrally to a machine, such as a distributor 30, is manufactured as the joint member of the present invention.
  • Referring to FIGS. 1 b and 1 c, the press-molding process includes a first press-molding process of molding the retaining portion 11, 111; and a second press-molding process of molding a nut portion 13, 131 formed on the outer circumference of the pipe. In the drawings, the joint member according to the present invention is manufactured as a nut or a bolt for a connection device having the nut portion 13, 131 on the outer face thereof.
  • Molds 41 and 42 that are used for the press-molding process may be a well-known press device having a shape corresponding to the shape of the metal member 10, 100, 1000 to be manufactured.
  • A mold 42 that is used for the second press-molding process may be a press device that includes at least two split stretchers 43 forming a hexagonal shape and being located inside the press device and a press-in tool 44 for extruding out while the stretchers 43 goes down.
  • FIGS. 2 and 3 illustrate an example that the connection portion welded integrally to the machine, such as the distributor 30, is manufactured as the joint member according to the present invention. Because the retaining portion 11 is welded integrally to the distributor 30, the connection portion serves as the joint member, on which a packing 31 and a compression ring 32 can be mounted by the insert member 20, 120. In this instance, the joining portion 121 is formed on the outer circumference of the connection portion of the joint member.
  • FIGS. 4 and 5 illustrate an example that the joint member having the nut portion 13 formed by the second press-molding process is manufactured as a nut, and in this instance, the joining portion 121 is a spiral groove.
  • FIGS. 6 and 7 a and 7 b illustrate an example that the joint member having the nut portion 131 formed by the second press-molding process is manufactured as a bolt, and in this instance, the joint member has a small diameter portion 14 extending from the nut portion 131 in the first press-molding process. In this instance, the joining portion 12 formed on the metal member 1000 having the small diameter portion 14 may selectively have a spiral groove 12 a or a spiral portion 12 b according to kinds of the bolt, which is the joint member.
  • FIG. 8 is a perspective view, in a partial section, showing a state where a corrugated pipe is connected using the nut and the bolt illustrated in FIGS. 4 to 7 a, which are the joint members manufactured according to the present invention.
  • As described above, when joint means including the packing 31 and the compression ring 32 is mounted at a predetermined position by the insert member 20, a corrugated pipe or a straight pipe can be connected and mounted with sealability. The joint means may have one of various structures besides the above, and the insert member 20 is manufactured according to the structure of the joint means.
  • The joint member according to the present invention, which is manufactured as the nut or the bolt, to the connection portion of various machines includes: a metal member 10 having a retaining portion 11 formed by pressing a stainless steel pipe cut into a predetermined length and a joining portion 12 formed on the stainless steel pipe; and an insert member 20 made of synthetic resin, the insert member 20 being pressed to the retaining portion 11 and mounted on the inner circumference of the metal member 10 to locate joint means in a proper position.
  • As shown in FIG. 4, in case of the joint member used as the nut, the metal member 100, which is a stainless steel pipe, further includes a nut 13 having a hexagonal appearance and being formed on the outer circumference of the metal member 100 by the pressing work. Moreover, as shown in FIG. 6, in case of the joint member used as the bolt, the metal member 1000 is press-molded to have a small diameter portion 14 extending from the nut portion 131.
  • As shown in FIGS. 2 to 6, the joining portion 12 may be the spiral portion formed on the outer circumference of the metal member 10, 100, 1000 or the spiral groove formed on the inner circumference of the metal member 10, 100, 1000 according to kinds of the joint member.
  • As described above, the joint member according to the present invention, which can calm controversy of lead hazards, can be easily manufactured only by the manufacturing method including the steps of manufacturing the metal member of half-finished goods through a pressing process using the stainless steel pipe, finishing the metal member 10 by forming the joining portion thereon; and pressing the insert member 20 made of synthetic resin into the metal member 10 to locate the joint means in a proper position.
  • While the present invention has been described with reference to the particular illustrative embodiments illustrated in the attached drawings, it is not to be restricted by the embodiments but only by the appended claims. It is to be appreciated that those skilled in the art can change or modify the embodiment without departing from the scope and spirit of the present invention.

Claims (3)

What is claimed is:
1. A method of manufacturing a joint member using a pipe comprising:
a press-molding process of manufacturing a metal member of half-finished goods by pressing a stainless steel pipe, which is cut into a predetermined length, to form a retaining portion; a screw forming process of forming a joining portion on the metal member of the half-finished goods; and an insert press-in process of pressing an insert member, which is made of synthetic resin material, to the retaining portion.
2. The manufacturing method according to claim 1, wherein the press-molding process includes a first press-molding process of molding the retaining portion; and a second press-molding process of molding a nut portion on the outer circumference of the pipe.
3. The manufacturing method according to claim 1, wherein in the first pressing process, a small diameter portion is extendedly formed on the nut portion.
US14/548,354 2011-04-08 2014-11-20 Joint member manufactured using pipe and manufacturing method of the same Abandoned US20150074976A1 (en)

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US13/064,694 US20120256412A1 (en) 2011-04-08 2011-04-08 Joint member manufactured using pipe and manufacturing method of the same
US14/548,354 US20150074976A1 (en) 2011-04-08 2014-11-20 Joint member manufactured using pipe and manufacturing method of the same

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Cited By (2)

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Publication number Priority date Publication date Assignee Title
CN105834683A (en) * 2016-04-26 2016-08-10 苏州昭沃五金科技有限公司 Machining technique of sleeve with through groove
US10302598B2 (en) 2016-10-24 2019-05-28 General Electric Company Corrosion and crack detection for fastener nuts

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Publication number Priority date Publication date Assignee Title
US11306850B2 (en) * 2017-10-24 2022-04-19 Dong-A Flexible Metal Tubes Co., Ltd. Connecting device for corrugated pipe and coupling method thereof

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US3219367A (en) * 1964-10-23 1965-11-23 Imp Eastman Corp Tube connector with permanently assembled sleeve and nut elements
US4452063A (en) * 1980-09-24 1984-06-05 Enrico Sebastiani Process for making pipe fitting components, and the components obtained thereby

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US3957287A (en) * 1971-11-05 1976-05-18 The Maple Press Company Book and cover therefor
JPS6225146Y2 (en) * 1980-09-29 1987-06-27
DE3630928A1 (en) * 1986-09-11 1988-03-24 Messer Griesheim Gmbh METHOD FOR IMPROVING THE HOMOGENITY OF HIGHLY REACTIVE POLYCONDENSATES
US5308122A (en) * 1992-07-06 1994-05-03 Tylok International, Inc. Tube coupling
JP3538737B2 (en) * 2002-03-20 2004-06-14 東京エレクトロン株式会社 Pipe fittings

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Publication number Priority date Publication date Assignee Title
US3219367A (en) * 1964-10-23 1965-11-23 Imp Eastman Corp Tube connector with permanently assembled sleeve and nut elements
US4452063A (en) * 1980-09-24 1984-06-05 Enrico Sebastiani Process for making pipe fitting components, and the components obtained thereby

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105834683A (en) * 2016-04-26 2016-08-10 苏州昭沃五金科技有限公司 Machining technique of sleeve with through groove
US10302598B2 (en) 2016-10-24 2019-05-28 General Electric Company Corrosion and crack detection for fastener nuts

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