DE3523014C1 - Electrical welding fitting or welding collar - Google Patents
Electrical welding fitting or welding collarInfo
- Publication number
- DE3523014C1 DE3523014C1 DE3523014A DE3523014A DE3523014C1 DE 3523014 C1 DE3523014 C1 DE 3523014C1 DE 3523014 A DE3523014 A DE 3523014A DE 3523014 A DE3523014 A DE 3523014A DE 3523014 C1 DE3523014 C1 DE 3523014C1
- Authority
- DE
- Germany
- Prior art keywords
- welding
- fitting
- heating wire
- collar
- air
- 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.)
- Expired
Links
Classifications
-
- 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
- B29C66/01—General aspects dealing with the joint area or with the area to be joined
- B29C66/342—Preventing air-inclusions
-
- 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
-
- 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"
- B29C65/3468—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 means for supplying heat to said heated elements which remain in the join, e.g. special electrical connectors of windings
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
Description
Die Erfindung betrifft ein Elektro-Schweißfitting oder eine Schweißmuffe für Rohre aus einem thermoplastischen und/oder schweißbaren Werkstoff mit einem an einer Innenfläche angeordneten, zu einer Heizwendel gewickelten, Heizdraht, welchem zum Schweißen Strom zuführbar ist, wobei wenigstens eine Aus sparung vorgesehen ist, die Luft aus der Schweißzone ableiten kann.The invention relates to an electrical welding fitting or Welding sleeve for pipes made of a thermoplastic and / or weldable material with one arranged on an inner surface, to a heating coil, heating wire, which current can be supplied for welding, at least one off economy is provided, the air from the welding zone can.
Aus der CH-PS 5 04 642 ist eine Elektro-Schweißmuffe bekannt, an deren Innenfläche die Heizwendel angeordnet ist. Die Muffe weist eine Aussparung auf, die als ein durch die gesamte Wand stärke der Muffe reichender radialer Spalt ausgebildet ist. Dieser radiale Spalt dient zur Aufnahme und Durchführung des mit einem Stecker versehenen Endes vom Heizdraht der Heizwen del. Es besteht die Gefahr, daß beim Schweißen das abschmel zende Material nicht vollständig in die Aussparung hineinge langt und die Abdichtung folglich nicht ausreichend ist. Im Bereich dieser Aussparung kann nach dem Schweißen eine Materi alschwächung vorhanden sein. Um ggfs. auch höhere anforderun gen an die Dichtigkeit erfüllen zu können, wird zusätzlich ein elastischer Dichtungsring in eine Sicke der Muffe angeordnet. Durch die vorbekannte Aussparung kann im Bereich der Schweiß zone vorhandene Luft abgeleitet werden. Lufteinschlüsse in der Schweißzone sind nachteilig, da jene die Festigkeit und die Dichtheit der Schweißverbindung in Frage stellen. Besonders nachteilig ist, daß derartige Lufteinschlüsse bei einer Druck prüfung oftmals nicht feststellbar sind, weil benachbarte Bereiche zunächst eine hinreichende Abdichtung ergeben. Wirken nach dem Verlegen der verschweißten Rohre, beispielsweise über das Erdreich, zusätzliche Kräfte ein, so besteht im Laufe der Zeit die erhöhte Gefahr eines Aufreißens und Undichtwerdens der Verbindung.An electric welding sleeve is known from CH-PS 5 04 642, on the inner surface of the heating coil is arranged. The sleeve has a recess that acts as a through the entire wall strength of the sleeve-extending radial gap is formed. This radial gap serves to receive and carry out the with a plug end from the heating wire of the heater del. There is a risk that this will melt during welding material does not fully enter the recess reaches and the seal is consequently not sufficient. in the Area of this recess can be a material after welding weakening is present. To meet higher requirements if necessary To be able to meet the tightness is additionally an elastic sealing ring arranged in a bead of the sleeve. Due to the previously known recess in the area of sweat zone existing air can be derived. Air pockets in the Sweat zones are disadvantageous because the strength and the Question the tightness of the welded joint. Especially the disadvantage is that such air pockets at a pressure testing is often not ascertainable because neighboring Areas first provide adequate sealing. Act after laying the welded pipes, for example over the earth, additional forces, so exists in the course of Time the increased risk of tearing and leaking the connection.
Aus dem DE-GM 71 21 715 ist ein Heizelement zum Herstellen einer flächigen Schweißverbindung von Gegenständen aus thermo plastischem Kunststoff bekannt, das insbesondere zum Anschwei ßen eines Sattelstückes auf die Oberfläche eines Rohres vorge sehen ist. Im Gegensatz zu Schweißverbindungen von Muffen und Rohren, bei welchen eine ringförmig geschlossene Schweißfläche vorhanden ist, ist bei einem Sattelstück dessen etwa halbzy lindrische Innenfläche fest und dicht mit der Außenfläche eines Rohres zu verbinden. Gerade bei einer solchen offenen Geometrie der zu verschweißenden Flächen sind Lufteinschlüsse in der Schweißzone und die damit verbundene Schwächung der Verbindung nachteilig. Wirken nämlich nach dem Verlegen im Erdreich äußere Kräfte ein, so ist nicht nur eine mehr oder weniger starke Undichtheit, sondern darüber hinaus das Ablösen des Sattelstückes mit all den damit verbundenen Nachteilen zu befürchten.From DE-GM 71 21 715 is a heating element for manufacturing a flat weld connection of objects made of thermo plastic plastic known, in particular for welding a saddle piece on the surface of a pipe see is. In contrast to welded joints of sleeves and Pipes with an annular, closed welding surface is present, is with a saddle piece about half-zy Lindrich inner surface tight and tight with the outer surface to connect a pipe. Especially with such an open one Geometry of the surfaces to be welded are air pockets in the welding zone and the associated weakening of the Adverse connection. Act after laying in Soil external forces, so is not just one more or less severe leakage, but also detachment of the saddle with all the disadvantages associated with it fear.
Der Erfindung liegt daher die Aufgabe zugrunde, das Elektro- Schweißfitting oder die Schweißmuffe der eingangs genannten Art mit geringem Aufwand dahingehend weiterzubilden, daß bei einer zuverlässigen Abdichtung in der Schweißzone Luftein schlüsse möglichst vermieden werden.The invention is therefore based on the object of Welding fitting or the welding sleeve of the aforementioned Kind with little effort to further develop in that a reliable seal in the air zone conclusions should be avoided if possible.
Die Lösung erfolgt gemäß den Merkmalen des Patentanspruches.The solution is based on the features of the claim.
Das derart ausgebildete Elektro-Schweißfitting oder die Schweißmuffe gewährleistet eine zuverlässige Abdichtung auch im Bereich der als Rille ausgebildeten Aussparung. Es befindet sich bei der Schweißmuffe in radialer Richtung über der Rille genügend Material, und eine Schwächung in diesem Bereich ist nicht zu befürchten. Das im Bereich der Schweißzone schmelzen de Material füllt die Rille vollständig aus, und es wird ver mieden, daß in einem radial außerhalb befindlichen Teilbereich nach dem Schweißen kein Material vorhanden ist. Auch bei hohen Dichtigkeitsanforderungen werden zusätzliche Dichtungsringe oder dergleichen nicht erforderlich. Entsprechendes gilt auch für eine offenflächige Geometrie, wie z. B. bei einem Sattel stück, bei welchem die Rille bzw. Rillen etwa sternförmig angeordnet werden. Die Festigkeit der Schweißverbindung wird bei allen Ausführungsformen zuverlässig gewährleistet, und hohe Sicherheitsanforderungen werden erfüllt. Beim Verschwei ßen kann eventuell im Bereich der Schweißzone noch vorhandene Luft durch die Rille entweichen. Entsprechend der Größe und der Geometrie vom Schweißfitting oder der Schweißmuffe können auch mehrere Rillen vorgesehen werden, um Luft zu den Enden der Schweißzone hin entweichen zu lassen. Bei Schweißmuffen können die Rillen gleichmäßig über den Umfang der Innenfläche verteilt angeordnet werden, und bei einem Sattelstück werden die Rillen sternförmig angeordnet, um Luft auf dem kürzesten Wege aus der Schweißzone nach außen ableiten zu können.The electrical welding fitting designed in this way or the Welding sleeve also ensures a reliable seal in the area of the recess formed as a groove. It is in the welding sleeve in the radial direction over the groove enough material, and there is a weakening in this area not to fear. Melt that in the area of the welding zone The material fills the groove completely and it is ver avoid that in a radially outside section there is no material after welding. Even at high Leakage requirements become additional sealing rings or the like is not required. The same applies for an open surface geometry, such as B. with a saddle piece, in which the groove or grooves approximately star-shaped to be ordered. The strength of the welded joint is reliably guaranteed in all embodiments, and high security requirements are met. When welding may still be present in the area of the welding zone Air can escape through the groove. According to the size and the geometry of the welding fitting or the welding sleeve Multiple grooves are also provided to provide air to the ends to let the welding zone escape. With welding sockets the grooves can be even over the circumference of the inner surface be distributed, and be at a saddle the grooves arranged in a star shape to keep air on the shortest To be able to derive paths from the welding zone to the outside.
Das Elektro-Schweißfittung oder die Schweißmuffe gelangt vor allem für Rohre aus Polyolefin, z. B. Polyäthylen zum Einsatz. The electric welding fitting or the welding sleeve occurs especially for polyolefin pipes, e.g. B. polyethylene for use.
Fig. 1 zeigt schematisch einen Längsschnitt durch ein Schweißfit ting mit einer Heizwendel. Fig. 1 shows schematically a longitudinal section through a welding fit with a heating coil.
Fig. 2 zeigt vergrößert einen Teil eines Schnitts in einer Radial ebene des Schweißfittings gemäß Fig. 1. FIG. 2 shows an enlarged part of a section in a radial plane of the weld fitting according to FIG. 1.
Fig. 3 zeigt einen Schnitt ähnlich Fig. 2 einer weiteren Ausfüh rungsform. Fig. 3 shows a section similar to FIG. 2 of another embodiment.
Fig. 1 zeigt schematisch einen Längsschnitt durch ein Elektro- Schweißfittung 1, welches einen Körper 2 aus einem thermopla stischen, schweißbaren Werkstoff aufweist. Auf der Innenfläche 16 des Körpers 2 ist in bekannter Weise ein elektrischer Heiz draht 3 in Form einer Heizwendel angeordnet. Auf der Außensei te des Körpers 2 sind zwei Buchsen 4 zu sehen, in welche die Enden 12 des Heizdrahtes geführt und zu einer Anschlußwendel 11 gewickelt sind. Mittels geeigneten Steckern kann über die Heizdrahtenden 12 der Schweißstrom zugeführt werden. Die bei den Rohrenden 13 sind mittels des Schweißfittings 1 miteinan der verbindbar. Fig. 1 shows schematically a longitudinal section through an electric welding fitting 1 , which has a body 2 made of a thermoplastic, weldable material. On the inner surface 16 of the body 2 , an electric heating wire 3 is arranged in the form of a heating coil in a known manner. On the outside of the body 2 , two sockets 4 can be seen, in which the ends 12 of the heating wire are guided and wound into a connecting coil 11 . The welding current can be supplied via the heating wire ends 12 by means of suitable plugs. The at the pipe ends 13 are miteinan connectable by means of the welding fitting 1 .
Die Innenfläche 6 enthält eine Anzahl axial ausgerichteter Rillen 5, durch welche evtl. zwischen der Außenfläche 10 der Rohrenden 13 und der Innenfläche 6 vorhandene Luft in axialer Richtung beim Schweißen abströmen kann. Wichtig ist hierbei, daß durch den Heizdraht 3 die Lüftungsrillen nicht vollständig verschlossen werden.The inner surface 6 contains a number of axially aligned grooves 5 , through which air present between the outer surface 10 of the tube ends 13 and the inner surface 6 can flow out in the axial direction during welding. It is important here that the ventilation grooves are not completely closed by the heating wire 3 .
In Fig. 2 ist teilweise ein Radialschnitt vergrößert darge stellt. Der Heizdraht 3 der Heizwendel ist in die Innenfläche 6 eingebettet und ragt etwas über diese hinaus. Die Eindring tiefe 14 des Heizdrahtes 3 ist kleiner als die Tiefe 16 der Rillen 5. Es verbleibt somit ein freier Bereich 18, der ein Abströmen von evtl. vorhandener Luft ermöglicht. Die Rille 5 wurde vor dem Eindrücken des Heizdrahtes 3 bzw. der Heizwendel in die Innenfläche 6 durch ein etwa V- förmiges Werkzeug kalt oder warm eingebracht.In Fig. 2 is a radial section enlarged Darge provides. The heating wire 3 of the heating coil is embedded in the inner surface 6 and projects somewhat beyond it. The penetration depth 14 of the heating wire 3 is smaller than the depth 16 of the grooves 5 . A free area 18 thus remains, which allows any air to flow away. The groove 5 was introduced cold or warm by an approximately V-shaped tool before the heating wire 3 or the heating coil was pressed into the inner surface 6 .
Die der Innenfläche 6 am weitesten abgewandte Seite 15 des Heizdrahtes 3 weist zum dahinterliegenden Teil des Kunststof fes einen derartigen Abstand auf, daß der freie Bereich 18 vorhanden ist. Die Rille 5 wird also von dem Heizdraht 3 nur teilweise abgedeckt.The side 15 of the heating wire 3 which is furthest away from the inner surface 6 is at such a distance from the part of the plastic behind that the free area 18 is present. The groove 5 is therefore only partially covered by the heating wire 3 .
Fig. 3 zeigt einen Axialschnitt einer alternativen Ausfüh rungsform des Schweißfittings, welches aus zwei zueinander koaxialen Teilen 20, 21 zusammengesetzt ist. Der Heizdraht 3 ist hierbei vollständig in das Innere des Materials des Schweißfittings 1 eingebettet und die Rille 5 befindet sich wiederum im Bereich der Innenfläche 6. Auch bei dieser Ausführungsform ist die wichtige Voraussetzung erfüllt, daß die Rille bzw. die Rillen im Bereich der Schweißzone sich befinden und eine axiale Entlüf tung derselben ermöglichen. Bei einem derart vollständig ein gebetteten Heizdraht 3 ist also die Rille 5 zwischen der der Innenfläche 6 zugewandten Seite 17 und der Innenfläche 6 angeordnet. Fig. 3 shows an axial section of an alternative embodiment of the welding fitting, which is composed of two mutually coaxial parts 20, 21 . The heating wire 3 is completely embedded in the interior of the material of the weld fitting 1 and the groove 5 is in turn located in the area of the inner surface 6 . In this embodiment, too, the important requirement is met that the groove or the grooves are located in the area of the welding zone and enable the same to be vented axially. With such a fully bedded heating wire 3 thus 5 is disposed between the inner surface 6 facing side 17 and the inner surface 6 of the groove.
Die anhand von Fig. 3 grundsätzlich erläuterte Ausführung mit vollständig eingebettetem Heizdraht 3 wird bei Druckarmaturen eingesetzt. Strichpunktiert ist in Fig. 2 eine Achse 22 eines weiteren hier nicht dargestellten Rohres bzw. einer Abzweigleitung angedeutet. Der Heizdraht ist bei einer derartigen Ausführung etwa spiralartig zur Achse 22 angeord net, und die Rillen verlaufen in der offenen Innenflä che etwa sternförmig von der Achse 22 weg.The embodiment explained in principle with reference to FIG. 3 with a fully embedded heating wire 3 is used in pressure fittings. Dashed lines in FIG. 2 indicate an axis 22 of a further pipe or a branch line, not shown here. In such an embodiment, the heating wire is arranged approximately spirally to the axis 22 , and the grooves run in the open inner surface approximately in a star shape from the axis 22 .
Claims (1)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE3523014A DE3523014C1 (en) | 1985-06-27 | 1985-06-27 | Electrical welding fitting or welding collar |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE3523014A DE3523014C1 (en) | 1985-06-27 | 1985-06-27 | Electrical welding fitting or welding collar |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| DE3523014C1 true DE3523014C1 (en) | 1987-01-02 |
Family
ID=6274362
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DE3523014A Expired DE3523014C1 (en) | 1985-06-27 | 1985-06-27 | Electrical welding fitting or welding collar |
Country Status (1)
| Country | Link |
|---|---|
| DE (1) | DE3523014C1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102013108881A1 (en) | 2013-08-16 | 2015-03-12 | Horst Severyns | socket connection |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CH504642A (en) * | 1969-01-17 | 1971-03-15 | Gebert & Cie | Plastic pipe sleeve for welded or packed jnt |
| DE7121715U (en) * | 1971-09-02 | Mannesmann Ag | Resistance heating element for welding objects made of thermoplastic plastic | |
| DE2823455B2 (en) * | 1977-06-03 | 1980-10-30 | Sturm, Werner, Haegendorf | Thermoplastic welding socket |
-
1985
- 1985-06-27 DE DE3523014A patent/DE3523014C1/en not_active Expired
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE7121715U (en) * | 1971-09-02 | Mannesmann Ag | Resistance heating element for welding objects made of thermoplastic plastic | |
| CH504642A (en) * | 1969-01-17 | 1971-03-15 | Gebert & Cie | Plastic pipe sleeve for welded or packed jnt |
| DE2823455B2 (en) * | 1977-06-03 | 1980-10-30 | Sturm, Werner, Haegendorf | Thermoplastic welding socket |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102013108881A1 (en) | 2013-08-16 | 2015-03-12 | Horst Severyns | socket connection |
| DE102013108881B4 (en) | 2013-08-16 | 2023-03-16 | Polymont GmbH & Co. KG | socket connection |
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