DK154244C - Fremgangsmaade til fremstilling af en elektrisk opvarmelig svejseroerfitting - Google Patents

Fremgangsmaade til fremstilling af en elektrisk opvarmelig svejseroerfitting

Info

Publication number
DK154244C
DK154244C DK177482A DK177482A DK154244C DK 154244 C DK154244 C DK 154244C DK 177482 A DK177482 A DK 177482A DK 177482 A DK177482 A DK 177482A DK 154244 C DK154244 C DK 154244C
Authority
DK
Denmark
Prior art keywords
manufacturing
electric heat
heat welding
welding fitting
fitting
Prior art date
Application number
DK177482A
Other languages
Danish (da)
English (en)
Other versions
DK177482A (da
DK154244B (da
Inventor
Arel Soumar
Earl Erling
Original Assignee
Ind Pipe Systems Pty Ltd
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
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=3768654&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=DK154244(C) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Ind Pipe Systems Pty Ltd filed Critical Ind Pipe Systems Pty Ltd
Publication of DK177482A publication Critical patent/DK177482A/da
Publication of DK154244B publication Critical patent/DK154244B/da
Application granted granted Critical
Publication of DK154244C publication Critical patent/DK154244C/da

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29D—PRODUCING PARTICULAR ARTICLES FROM PLASTICS OR FROM SUBSTANCES IN A PLASTIC STATE
    • B29D23/00—Producing tubular articles
    • B29D23/001—Pipes; Pipe joints
    • B29D23/003—Pipe joints, e.g. straight joints
    • B29D23/005—Pipe joints, e.g. straight joints provided with electrical wiring
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B26—HAND CUTTING TOOLS; CUTTING; SEVERING
    • B26D—CUTTING; DETAILS COMMON TO MACHINES FOR PERFORATING, PUNCHING, CUTTING-OUT, STAMPING-OUT OR SEVERING
    • B26D3/00—Cutting work characterised by the nature of the cut made; Apparatus therefor
    • B26D3/16—Cutting rods or tubes transversely
    • 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
    • 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
    • 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
    • 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
    • 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
    • Y10T156/00—Adhesive bonding and miscellaneous chemical manufacture
    • Y10T156/10—Methods of surface bonding and/or assembly therefor
    • Y10T156/1052—Methods of surface bonding and/or assembly therefor with cutting, punching, tearing or severing
    • Y10T156/1062—Prior to assembly
    • Y10T156/1064—Partial cutting [e.g., grooving or incising]
    • 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
    • Y10T29/49002—Electrical device making
    • Y10T29/49082—Resistor making
    • Y10T29/49083—Heater type
    • 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
    • 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
    • Y10T29/49881—Assembling or joining of separate helix [e.g., screw thread]
    • 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
    • Y10T29/49945—Assembling or joining by driven force fit
    • 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
    • Y10T29/51—Plural diverse manufacturing apparatus including means for metal shaping or assembling
    • Y10T29/5199—Work on tubes

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Forests & Forestry (AREA)
  • Branch Pipes, Bends, And The Like (AREA)
  • Lining Or Joining Of Plastics Or The Like (AREA)
  • Laying Of Electric Cables Or Lines Outside (AREA)
DK177482A 1980-08-22 1982-04-22 Fremgangsmaade til fremstilling af en elektrisk opvarmelig svejseroerfitting DK154244C (da)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
AUPE520780 1980-08-22
AUPE520780 1980-08-22
AU8100116 1981-08-18
PCT/AU1981/000116 WO1982000699A1 (en) 1980-08-22 1981-08-18 Electric fusion pipe fittings

Publications (3)

Publication Number Publication Date
DK177482A DK177482A (da) 1982-04-22
DK154244B DK154244B (da) 1988-10-24
DK154244C true DK154244C (da) 1989-03-28

Family

ID=3768654

Family Applications (1)

Application Number Title Priority Date Filing Date
DK177482A DK154244C (da) 1980-08-22 1982-04-22 Fremgangsmaade til fremstilling af en elektrisk opvarmelig svejseroerfitting

Country Status (14)

Country Link
US (1) US4470193A (ja)
EP (1) EP0058175B2 (ja)
JP (1) JPS6142160B2 (ja)
BR (1) BR8108749A (ja)
CA (1) CA1177630A (ja)
DE (1) DE3176913D1 (ja)
DK (1) DK154244C (ja)
GR (1) GR75330B (ja)
IL (1) IL63610A (ja)
IT (1) IT1171480B (ja)
MY (1) MY102623A (ja)
NZ (1) NZ198109A (ja)
WO (1) WO1982000699A1 (ja)
ZA (1) ZA815724B (ja)

Families Citing this family (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3204681C2 (de) * 1982-02-11 1986-02-06 Friedrichsfeld Gmbh, Steinzeug- Und Kunststoffwerke, 6800 Mannheim Verfahren und Vorrichtung zum Einbetten eines elektrischen Heizdrahtes in einem muffenartigen Kunststoffteil
US4626308A (en) * 1983-02-18 1986-12-02 The Victaulic Company Plc Method of making welded pipe joints
GB8410765D0 (en) * 1984-04-27 1984-06-06 Glynwed Tubes & Fittings Fusion pad
US4586624A (en) * 1984-08-07 1986-05-06 Bondico, Inc. Method and device for heat sealing thermoplastics materials
NL8602469A (nl) * 1986-09-30 1988-04-18 Wavin Bv Werkwijze alsmede inrichting en extrusiekop voor het onder toepassen van extrusie vervaardigen van lasbuismoffen en lasfittingen uit thermoplastische materiaal onder toepassing van een in een eerste extruder gevormd eerste buisdeel.
FR2648079B1 (fr) * 1989-06-09 1991-11-15 Boulet D Auria Teruzzi Cie Procede de fabrication de manchon electro-soudable, dispositif pour la mise en oeuvre de celui-ci et manchons obtenus selon ce procede
TR26471A (tr) * 1990-07-26 1995-03-15 Boulet Dauria Terlizzi Et Cie ELEKTRO-KAYNAK KOVANI üRETIM YÖNTEMI,BU üRETIMIN GERCEKLESTIRILMESI ICIN CIHAZ VE BU YÖNTEM ILE ELDE EDILEN KOVANLAR
US5387305A (en) * 1992-09-22 1995-02-07 Streng Plastic Ag Method for producing a theroelectrically weldable zone in a thermoplastic material
CH686123A5 (de) * 1992-09-22 1996-01-15 Streng Plastic Ag Elektrisch schweissbare Rohrverbindungsteile aus thermoplastischem Material.
CA2121400A1 (en) * 1993-04-27 1994-10-28 Alfred Thalmann Heating means for the surface welding of thermoplastics and process for the production thereof
US5708251A (en) * 1995-10-30 1998-01-13 Compucraft Ltd. Method for embedding resistance heating wire in an electrofusion saddle coupler
US7069637B2 (en) * 1997-12-24 2006-07-04 Msa Engineering Systems Limited Wirelaying tool
GB9727159D0 (en) * 1997-12-24 1998-02-25 Msa Engineering Systems Limite Wirelaying tool
JP2882602B1 (ja) 1998-03-17 1999-04-12 日本ピラー工業株式会社 うず巻形ガスケットの製造方法及び製造装置
JP5348573B2 (ja) * 2012-04-20 2013-11-20 日立金属株式会社 電気融着継手の製造方法
CN103398256B (zh) * 2013-08-06 2015-08-19 天津军星管业集团有限公司 一种电熔管件布线绕丝切削多功能布线机
CN104595610B (zh) * 2015-01-15 2017-05-31 浙江新杭宝管业有限公司 一种制备露线式电熔管件的方法及所得露线式电熔管件
CN114941756B (zh) * 2022-07-26 2022-10-21 南通希尔顿博世流体设备有限公司 一种流体管道连接用紧固接头

Family Cites Families (20)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2199113A (en) * 1935-03-13 1940-04-30 Ralph S Peirce Production of blanks for tamperproof seals
US2424974A (en) * 1943-04-24 1947-08-05 Standard Telephones Cables Ltd Method of and means for forming coils
US2917820A (en) * 1956-07-20 1959-12-22 American Pipe & Constr Co Method for lining pipelines
NL236188A (ja) * 1958-02-17
GB978106A (en) * 1963-01-15 1964-12-16 Keller Hans Improvements in or relating to connection sleeves for the welding together of synthetic plastic tubes
NL6412575A (ja) * 1964-10-29 1966-05-02
US3543805A (en) * 1966-06-24 1970-12-01 Moore & Co Samuel Composite tubing
GB1248461A (en) † 1968-06-04 1971-10-06 Trevor Frederick Moss High pressure hose
CH515449A (de) * 1970-09-08 1971-11-15 Rollmaplast Ag Elektrisch schweissbare Rohrmuffe aus Kunststoff mit Berührungsschutz
CH544906A (de) * 1971-11-12 1974-01-15 Gerbert & Cie Elektrisch heizbare Schweissmuffe und Verfahren zu deren Herstellung
NL175458C (nl) * 1973-03-14 1984-11-01 Sturm Werner Werkwijze voor het vervaardigen van een lasmof voor thermoplastische buizen.
US3973596A (en) * 1973-08-20 1976-08-10 Walker Grant W Tubular member and process of forming a tubular member
CH570577A5 (ja) * 1974-05-10 1975-12-15 Fischer Ag Georg
CH606895A5 (ja) * 1975-12-18 1978-11-15 Geberit Ag
FR2353381A1 (fr) * 1976-06-03 1977-12-30 Pont A Mousson Procede d'assemblage par soudure de tubes plastiques et raccord pour un tel assemblage
AT362143B (de) * 1977-12-27 1981-04-27 Pichler Heinrich Verfahren und vorrichtung zum einbetten von laenglichen verstaerkungselementen, insbesondere glasfasern grosser laenge, in kunststoffteile
CH627249A5 (ja) * 1978-04-21 1981-12-31 Werner Sturm
CH630162A5 (de) * 1978-05-02 1982-05-28 Werner Sturm Elektro-schweissmuffe aus thermoplastischem material.
CH632078A5 (en) * 1978-09-12 1982-09-15 Von Roll Ag Collar for connecting line elements
US4270254A (en) * 1979-04-26 1981-06-02 Anstalt Fur Stromungsmaschinen Gesellschaft Mbh Method for making grooved rollers for dehydrating runs of materials

Also Published As

Publication number Publication date
JPS57501340A (ja) 1982-07-29
DK177482A (da) 1982-04-22
EP0058175B1 (en) 1988-10-19
EP0058175A4 (en) 1984-06-13
DK154244B (da) 1988-10-24
ZA815724B (en) 1982-08-25
BR8108749A (pt) 1982-06-22
NZ198109A (en) 1984-07-06
JPS6142160B2 (ja) 1986-09-19
MY102623A (en) 1992-08-17
CA1177630A (en) 1984-11-13
EP0058175A1 (en) 1982-08-25
IT8149150A0 (it) 1981-08-21
US4470193A (en) 1984-09-11
DE3176913D1 (en) 1988-11-24
IL63610A (en) 1985-09-29
WO1982000699A1 (en) 1982-03-04
IT1171480B (it) 1987-06-10
GR75330B (ja) 1984-07-13
EP0058175B2 (en) 1992-05-06

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Legal Events

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