WO2005059428A1 - Tubes ondules fabriques a partir d'un materiau a base de plastique combine a un procede de soudage par electro-fusion - Google Patents

Tubes ondules fabriques a partir d'un materiau a base de plastique combine a un procede de soudage par electro-fusion Download PDF

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Publication number
WO2005059428A1
WO2005059428A1 PCT/TR2004/000051 TR2004000051W WO2005059428A1 WO 2005059428 A1 WO2005059428 A1 WO 2005059428A1 TR 2004000051 W TR2004000051 W TR 2004000051W WO 2005059428 A1 WO2005059428 A1 WO 2005059428A1
Authority
WO
WIPO (PCT)
Prior art keywords
muff
spigot
corrugated pipe
connection according
conical shape
Prior art date
Application number
PCT/TR2004/000051
Other languages
English (en)
Inventor
Zekariya Zengin
Original Assignee
Dizayn Teknik Plastik Boru Ve Elemanlari Sanayi Ve Ticaret A.S.
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Dizayn Teknik Plastik Boru Ve Elemanlari Sanayi Ve Ticaret A.S. filed Critical Dizayn Teknik Plastik Boru Ve Elemanlari Sanayi Ve Ticaret A.S.
Publication of WO2005059428A1 publication Critical patent/WO2005059428A1/fr

Links

Classifications

    • 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—Constructive types of pipe joints not provided for in groups F16L13/00 - F16L23/00 ; Details of pipe joints not otherwise provided for, e.g. electrically conducting or insulating means
    • F16L25/0036—Joints for corrugated pipes
    • F16L25/0063—Joints for corrugated pipes with two corrugated pipes being directly connected to each other
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
    • B29C65/02—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure
    • B29C65/34—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using heated elements which remain in the joint, e.g. "verlorenes Schweisselement"
    • B29C65/3404—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using heated elements which remain in the joint, e.g. "verlorenes Schweisselement" characterised by the type of heated elements which remain in the joint
    • B29C65/342—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using heated elements which remain in the joint, e.g. "verlorenes Schweisselement" characterised by the type of heated elements which remain in the joint comprising at least a single wire, e.g. in the form of a winding
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/01—General aspects dealing with the joint area or with the area to be joined
    • B29C66/05—Particular design of joint configurations
    • B29C66/10—Particular design of joint configurations particular design of the joint cross-sections
    • B29C66/11—Joint cross-sections comprising a single joint-segment, i.e. one of the parts to be joined comprising a single joint-segment in the joint cross-section
    • B29C66/112—Single lapped joints
    • B29C66/1122—Single lap to lap joints, i.e. overlap joints
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/50—General aspects of joining tubular articles; General aspects of joining long products, i.e. bars or profiled elements; General aspects of joining single elements to tubular articles, hollow articles or bars; General aspects of joining several hollow-preforms to form hollow or tubular articles
    • B29C66/51—Joining tubular articles, profiled elements or bars; Joining single elements to tubular articles, hollow articles or bars; Joining several hollow-preforms to form hollow or tubular articles
    • B29C66/52—Joining tubular articles, bars or profiled elements
    • B29C66/522—Joining tubular articles
    • B29C66/5221—Joining tubular articles for forming coaxial connections, i.e. the tubular articles to be joined forming a zero angle relative to each other
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/50—General aspects of joining tubular articles; General aspects of joining long products, i.e. bars or profiled elements; General aspects of joining single elements to tubular articles, hollow articles or bars; General aspects of joining several hollow-preforms to form hollow or tubular articles
    • B29C66/51—Joining tubular articles, profiled elements or bars; Joining single elements to tubular articles, hollow articles or bars; Joining several hollow-preforms to form hollow or tubular articles
    • B29C66/52—Joining tubular articles, bars or profiled elements
    • B29C66/522—Joining tubular articles
    • B29C66/5229—Joining tubular articles involving the use of a socket
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/50—General aspects of joining tubular articles; General aspects of joining long products, i.e. bars or profiled elements; General aspects of joining single elements to tubular articles, hollow articles or bars; General aspects of joining several hollow-preforms to form hollow or tubular articles
    • B29C66/51—Joining tubular articles, profiled elements or bars; Joining single elements to tubular articles, hollow articles or bars; Joining several hollow-preforms to form hollow or tubular articles
    • B29C66/52—Joining tubular articles, bars or profiled elements
    • B29C66/522—Joining tubular articles
    • B29C66/5229—Joining tubular articles involving the use of a socket
    • B29C66/52296—Joining tubular articles involving the use of a socket said socket comprising sealing elements, e.g. gaskets
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/50—General aspects of joining tubular articles; General aspects of joining long products, i.e. bars or profiled elements; General aspects of joining single elements to tubular articles, hollow articles or bars; General aspects of joining several hollow-preforms to form hollow or tubular articles
    • B29C66/63—Internally supporting the article during joining
    • 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
    • F16L47/00—Connecting arrangements or other fittings specially adapted to be made of plastics or to be used with pipes made of plastics
    • F16L47/02—Welded joints; Adhesive joints
    • F16L47/03—Welded joints with an electrical resistance incorporated in the joint
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
    • B29C65/02—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure
    • B29C65/34—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using heated elements which remain in the joint, e.g. "verlorenes Schweisselement"
    • B29C65/3472—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using heated elements which remain in the joint, e.g. "verlorenes Schweisselement" characterised by the composition of the heated elements which remain in the joint
    • B29C65/3476—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using heated elements which remain in the joint, e.g. "verlorenes Schweisselement" characterised by the composition of the heated elements which remain in the joint being metallic
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
    • B29C65/02—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure
    • B29C65/34—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using heated elements which remain in the joint, e.g. "verlorenes Schweisselement"
    • B29C65/3472—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using heated elements which remain in the joint, e.g. "verlorenes Schweisselement" characterised by the composition of the heated elements which remain in the joint
    • B29C65/3476—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using heated elements which remain in the joint, e.g. "verlorenes Schweisselement" characterised by the composition of the heated elements which remain in the joint being metallic
    • B29C65/348—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using heated elements which remain in the joint, e.g. "verlorenes Schweisselement" characterised by the composition of the heated elements which remain in the joint being metallic with a polymer coating
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/01—General aspects dealing with the joint area or with the area to be joined
    • B29C66/05—Particular design of joint configurations
    • B29C66/10—Particular design of joint configurations particular design of the joint cross-sections
    • B29C66/11—Joint cross-sections comprising a single joint-segment, i.e. one of the parts to be joined comprising a single joint-segment in the joint cross-section
    • B29C66/116—Single bevelled joints, i.e. one of the parts to be joined being bevelled in the joint area
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/70—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material
    • B29C66/71—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the composition of the plastics material of the parts to be joined
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
    • B29L2023/00—Tubular articles
    • B29L2023/18—Pleated or corrugated hoses
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
    • B29L2023/00—Tubular articles
    • B29L2023/22—Tubes or pipes, i.e. rigid

Definitions

  • Present invention relates to the corrugated pipes made from plastic based material and especially relates to the plastic based corrugated pipes, which are used in waste water systems such as for sewer systems and rain water and which are combined by using electrofusion welding method.
  • fusion welding Following the plastic parts to be melted, to get them in one piece is called fusion welding.
  • aluminium plates coated with Teflon or brass wires are used.
  • the welding process carried out by transferring a current from a wire is called electrofusion welding.
  • the purpose of the wire is to cause the plastic to be melted and to create a pressure by dilating, forming a resistance and transferring the heat occurred when the current is transferred to the plastic.
  • Plastic molecules combine under high heat and pressure and the welding structure is formed.
  • the invention especially relates to the mounting the male (spigot) and female (muff) tips of the corrugated pipes, which are made from plastic based material by using electrofusion welding method and, peculiarly, where the copper wires were used to melt the regions to be combined, to each other.
  • Corrugated pipes made from plastic material are generally used in waste water systems such as for sewer systems and rain water and they are manufactured generally from PP and HDPE materials because of their advantageous effects such as raw material access, cost convenience and mechanical and chemical behaviour stability.
  • gasket muff combining and built in gasket muff combining methods are gasket muff combining and built in gasket muff combining methods.
  • gasket muff combining method plastic based corrugated pipes, which enters from the openings on the both side of the female part, which is also called muff, are mechanically connected by means of the gaskets supplied to the inside of the rib slots built in the outer circumferential surfaces of said pipes, in order to ensure the sealing.
  • the object of the present invention is to combine the corrugated type pipes made from plastic materials by using electrofusion method and enhancing the sealing function.
  • Another object of the invention is to combine the corrugated type pipes made from plastic materials by using electrofusion method and to extend the lifespan of homogenous mechanical connection and connection points.
  • Another object of the invention is to combine the corrugated type pipes made from plastic materials by using electrofusion method and to provide a decrease in manufacture costs.
  • the present invention is a corrugated pipe, which is to be combined by electrofusion method, comprising a spigot part male part (2) made from plastic based material and a muff part/female part (1) and a rib formation (5), which is circumferentially embodied along the outer surface of the body (4) region located between the said spigot part (2) and said muff part (1 ) and which is composed of indent/rib slot (6) and juts, characterized in that, the spigot part (2) and the muff part (1 ) entering into the spigot part (2), the melting means (9), ensuring electrofusion, is supplied therebetween, comprise a predetermined rate of conical shape.
  • the conductive wires which ensure the combination of the plastic based corrugated pipes by the electrofusion method within the scope of the present invention, preferably comprise a high rate of copper element by weight.
  • the alteration of the resistance of the copper material by temperature is that the resistance increases by temperature.
  • Plastic materials conduct less heat per unit time by increase in their temperature. As soon as the electricity is given to the wire and pipe system, which are cool in the initial phase of the welding process, the copper wire heats and begin to melt the surrounding plastic, the heat flow transferring through the melting plastic begins to cool in connection to that and the wire works to increase the surface temperature. However, due to the increase in the resistance of the wire, the heat flow produced by it begins to decrease. Consequently, the heat need of the plastic decreases and the wire ensures the convenient working of such dual by giving less heat. Characteristic of the plastic materials may be controlled during the welding process in this way.
  • Figure 1 is a representative application drawing of the gasket muff corrugated pipe combination that depicts the state of the art.
  • Figure 2 is a representative application drawing of the built in gasket muff corrugated pipe combination of the invention, which depicts the state of the art.
  • Figure 3a is a representative application drawing of the corrugated pipe made from plastic based material of the invention.
  • Figure 3b is a representative application drawing of the combination condition of the corrugated pipes made from plastic based material of the invention.
  • Figure 4a is a representative application drawing of the alternative corrugated pipe made from plastic based material of the invention.
  • Figure 4a is a representative application drawing of the combination condition of the alternative corrugated pipe made from plastic based material of the invention.
  • FIG. 1 and Figure 2 are representative illustrations of the previous art and shall not be considered in this section.
  • tip parts of the pipe comprise a female part - muff part - (1 ) and a male part - spigot part (2).
  • Outer surface of the body (4) of the corrugated pipe which is located between said tip parts (1.2) consists of a rib (5) composed of a certain amount of indents and juts. Indents of such rib (5) are called rib slot (6) and the dimension of depth is in certain values which are determined before as desired.
  • a muff rib (3) is configured at a region of the muff essentially towards to its tip part.
  • Such muff rib (3) is a result of the manufacture process of the corrugated pipe and, if desired, the number of the muff ribs may be two, three or more.
  • Either muff part or the spigot part that is the internal surface of the muff part (11 ) and the external surface of the spigot part (10), comprise a predetermined amount of conical shape throughout all such parts or along a certain distance of such parts.
  • apparatuses that prevent the dilation shall be positioned on the welding region, namely muff part (1) and on the spigot part (2) which enters into the muff part (1 ).
  • an external compression apparatus (6) shall be supplied on the external surface of the muff part (1) and an internal tension apparatus (7) shall be supplied on the internal surface of the spigot part (2) respectively, hence a suitable pressure force shall be provided.
  • the conductive wires which are used in the combination of the corrugated pipes made from plastic based material by the electrofusion method within the scope of the present invention, are copper based but other wires such as from brass etc. may be used during the pipe connection procedure.
  • conical angles of the muff part (1), spigot part (2) or spigot external surface (10) and/or the muff internal surface (11) of the plastic based pipes to be combined by electrofusion are preferably between 1° - 10° and more preferable ranges between 2° - 4°.
  • all conical values must be considered within the scope of present invention.
  • an instable independent welding brace in the pipe may be used as an interval layer.
  • Such independent welding brace may be used by locating it on the rib (5) or into the rib slot (6).
  • a welding brace is formed by coiling the copper wires on a separate plate, preferably HDPE plate, having the form of a strip. Such welding brace may be used later by locating it externally on the rib or into the rib slot.
  • the muff part (1 ) of the plastic based pipes and the spigot parts (2) comprise a conical form in predetermined values.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Lining Or Joining Of Plastics Or The Like (AREA)
  • Branch Pipes, Bends, And The Like (AREA)

Abstract

La présente invention concerne un tube ondulé combiné à un procédé d'électro-fusion, qui comprend une partie ergot/partie mâle (2) fabriquée à partir d'un matériau à base de plastique et une partie manchon/femelle (1) et une formation de nervures (5), qui est réalisée au niveau de la périphérie le long de la surface extérieure de la région du corps (4) située entre cette partie ergot (2) et cette partie manchon (1) et, qui est composé de fente d'indentation/nervure (6) et de saillies et, qui se caractérise en ce que la partie ergot (2) et la partie manchon (1) entrant dans la partie ergot (2), l'organe de mélange (9) assurant l'électro-fusion étant fourni entre ces deux parties, comprend un angle prédéterminé de forme conique
PCT/TR2004/000051 2003-12-17 2004-12-17 Tubes ondules fabriques a partir d'un materiau a base de plastique combine a un procede de soudage par electro-fusion WO2005059428A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
TR2003/02195A TR200302195A2 (tr) 2003-12-17 2003-12-17 Elektrofüzyon kaynak metodu ile birleştirilebilen plastik esaslı malzemeden mamül koruge borular.
TR2003/02195 2003-12-17

Publications (1)

Publication Number Publication Date
WO2005059428A1 true WO2005059428A1 (fr) 2005-06-30

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ID=34699282

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Application Number Title Priority Date Filing Date
PCT/TR2004/000051 WO2005059428A1 (fr) 2003-12-17 2004-12-17 Tubes ondules fabriques a partir d'un materiau a base de plastique combine a un procede de soudage par electro-fusion

Country Status (2)

Country Link
TR (1) TR200302195A2 (fr)
WO (1) WO2005059428A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1873438A1 (fr) * 2006-06-29 2008-01-02 Plastiflex Belgium Ensemble de tuyau flexible

Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3061503A (en) * 1956-10-29 1962-10-30 Dow Chemical Co Method of joining pipes by means of an electrically heatable sleeve
US4842305A (en) * 1984-08-14 1989-06-27 Osterreichische Salen-Kunststoffwerk Gmbh Pipe joint connecting plastic pipes and process of making such joint
US5772824A (en) * 1994-11-28 1998-06-30 Georg Fischer Rohrleitungssysteme Ag Process and means for welding corrugated tubes and/or compound tubes and weld connection produced thereby
EP1024321A2 (fr) * 1999-01-29 2000-08-02 Loredana Fontanive Bächle Tuyau avec sections lisses et ondulées disposées en alternance
JP2000291875A (ja) * 1999-04-02 2000-10-20 Hitachi Metals Ltd 波付管の電気融着接続構造
US6149756A (en) * 1996-03-05 2000-11-21 Uponor Innovation Ab Method for joining plastic pipes, a joint ring used in the joining and a pipe joint provided with the method
DE10032623A1 (de) * 1999-05-07 2002-01-17 Bridgstock Kenworthy Ltd Kupplungsring
US20020130124A1 (en) * 2001-03-12 2002-09-19 Karl-Heinz Krah Gmbh Electrofusion socket forming system
DE20213974U1 (de) * 2002-09-06 2002-11-07 Henze Gmbh Kunststoffwerk Kunststoffrohr

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3061503A (en) * 1956-10-29 1962-10-30 Dow Chemical Co Method of joining pipes by means of an electrically heatable sleeve
US4842305A (en) * 1984-08-14 1989-06-27 Osterreichische Salen-Kunststoffwerk Gmbh Pipe joint connecting plastic pipes and process of making such joint
US5772824A (en) * 1994-11-28 1998-06-30 Georg Fischer Rohrleitungssysteme Ag Process and means for welding corrugated tubes and/or compound tubes and weld connection produced thereby
US6149756A (en) * 1996-03-05 2000-11-21 Uponor Innovation Ab Method for joining plastic pipes, a joint ring used in the joining and a pipe joint provided with the method
EP1024321A2 (fr) * 1999-01-29 2000-08-02 Loredana Fontanive Bächle Tuyau avec sections lisses et ondulées disposées en alternance
JP2000291875A (ja) * 1999-04-02 2000-10-20 Hitachi Metals Ltd 波付管の電気融着接続構造
DE10032623A1 (de) * 1999-05-07 2002-01-17 Bridgstock Kenworthy Ltd Kupplungsring
US20020130124A1 (en) * 2001-03-12 2002-09-19 Karl-Heinz Krah Gmbh Electrofusion socket forming system
DE20213974U1 (de) * 2002-09-06 2002-11-07 Henze Gmbh Kunststoffwerk Kunststoffrohr

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN vol. 2000, no. 13 5 February 2001 (2001-02-05) *

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1873438A1 (fr) * 2006-06-29 2008-01-02 Plastiflex Belgium Ensemble de tuyau flexible

Also Published As

Publication number Publication date
TR200302195A2 (tr) 2005-07-21

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