CH334763A - Method for producing a pipe connection and connecting sleeve used for carrying out the method - Google Patents

Method for producing a pipe connection and connecting sleeve used for carrying out the method

Info

Publication number
CH334763A
CH334763A CH334763DA CH334763A CH 334763 A CH334763 A CH 334763A CH 334763D A CH334763D A CH 334763DA CH 334763 A CH334763 A CH 334763A
Authority
CH
Switzerland
Prior art keywords
sleeve
socket
pipe
bath
pipe connection
Prior art date
Application number
Other languages
German (de)
Inventor
Tschappu Franz
Original Assignee
Forster Ulrich
Reutimann Fritz
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 Forster Ulrich, Reutimann Fritz filed Critical Forster Ulrich
Publication of CH334763A publication Critical patent/CH334763A/en

Links

Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C65/00Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
    • B29C65/66Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by liberation of internal stresses, e.g. shrinking of one of the parts to be joined
    • B29C65/68Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by liberation of internal stresses, e.g. shrinking of one of the parts to be joined using auxiliary shrinkable elements
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00General aspects of processes or apparatus for joining preformed parts
    • B29C66/01General aspects dealing with the joint area or with the area to be joined
    • B29C66/05Particular design of joint configurations
    • B29C66/10Particular design of joint configurations particular design of the joint cross-sections
    • B29C66/12Joint cross-sections combining only two joint-segments; Tongue and groove joints; Tenon and mortise joints; Stepped joint cross-sections
    • B29C66/122Joint cross-sections combining only two joint-segments, i.e. one of the parts to be joined comprising only two joint-segments in the joint cross-section
    • B29C66/1222Joint cross-sections combining only two joint-segments, i.e. one of the parts to be joined comprising only two joint-segments in the joint cross-section comprising at least a lapped joint-segment
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00General aspects of processes or apparatus for joining preformed parts
    • B29C66/01General aspects dealing with the joint area or with the area to be joined
    • B29C66/05Particular design of joint configurations
    • B29C66/10Particular design of joint configurations particular design of the joint cross-sections
    • B29C66/12Joint cross-sections combining only two joint-segments; Tongue and groove joints; Tenon and mortise joints; Stepped joint cross-sections
    • B29C66/122Joint cross-sections combining only two joint-segments, i.e. one of the parts to be joined comprising only two joint-segments in the joint cross-section
    • B29C66/1224Joint cross-sections combining only two joint-segments, i.e. one of the parts to be joined comprising only two joint-segments in the joint cross-section comprising at least a butt joint-segment
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00General aspects of processes or apparatus for joining preformed parts
    • B29C66/50General 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
    • B29C66/51Joining 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
    • B29C66/52Joining tubular articles, bars or profiled elements
    • B29C66/522Joining tubular articles
    • B29C66/5221Joining tubular articles for forming coaxial connections, i.e. the tubular articles to be joined forming a zero angle relative to each other
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00General aspects of processes or apparatus for joining preformed parts
    • B29C66/50General 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
    • B29C66/51Joining 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
    • B29C66/52Joining tubular articles, bars or profiled elements
    • B29C66/522Joining tubular articles
    • B29C66/5223Joining tubular articles for forming corner connections or elbows, e.g. for making V-shaped pieces
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00General aspects of processes or apparatus for joining preformed parts
    • B29C66/50General 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
    • B29C66/51Joining 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
    • B29C66/52Joining tubular articles, bars or profiled elements
    • B29C66/522Joining tubular articles
    • B29C66/5223Joining tubular articles for forming corner connections or elbows, e.g. for making V-shaped pieces
    • B29C66/52231Joining tubular articles for forming corner connections or elbows, e.g. for making V-shaped pieces with a right angle, e.g. for making L-shaped pieces
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00General aspects of processes or apparatus for joining preformed parts
    • B29C66/50General 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
    • B29C66/51Joining 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
    • B29C66/52Joining tubular articles, bars or profiled elements
    • B29C66/522Joining tubular articles
    • B29C66/5224Joining tubular articles for forming fork-shaped connections, e.g. for making Y-shaped pieces
    • B29C66/52241Joining tubular articles for forming fork-shaped connections, e.g. for making Y-shaped pieces with two right angles, e.g. for making T-shaped pieces
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00General aspects of processes or apparatus for joining preformed parts
    • B29C66/50General 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
    • B29C66/51Joining 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
    • B29C66/52Joining tubular articles, bars or profiled elements
    • B29C66/522Joining tubular articles
    • B29C66/5229Joining tubular articles involving the use of a socket
    • B29C66/52291Joining tubular articles involving the use of a socket said socket comprising a stop
    • B29C66/52292Joining tubular articles involving the use of a socket said socket comprising a stop said stop being internal
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16LPIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L47/00Connecting arrangements or other fittings specially adapted to be made of plastics or to be used with pipes made of plastics
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00General aspects of processes or apparatus for joining preformed parts
    • B29C66/50General 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
    • B29C66/51Joining 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
    • B29C66/52Joining tubular articles, bars or profiled elements
    • B29C66/522Joining tubular articles
    • B29C66/5229Joining tubular articles involving the use of a socket
    • B29C66/52296Joining tubular articles involving the use of a socket said socket comprising sealing elements, e.g. gaskets
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00General aspects of processes or apparatus for joining preformed parts
    • B29C66/70General 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
    • B29C66/71General 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

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Lining Or Joining Of Plastics Or The Like (AREA)
  • Non-Disconnectible Joints And Screw-Threaded Joints (AREA)

Description

       

  



  Verfahren zur Herstellung einer Rohrverbindung und zur Ausübung des Verfahrens dienende Verbindungsmuffe    Rohrverbindungsmuffen    aus Kunststoff sind bekannt. Diese werden speziell zur Verbindung von Rohren zur Leitung aggressiver   lledien    benötigt und bedingen ein kompliziertes   Befestigungs-und Abdichtungsver-      falren.   



   Die vorliegende Erfindung betrifft nun ein Verfahren zur Herstellung einer Rohrverbindung unter Verwendung einer Verbindungsmuffe aus Kunststoff, insbesondere thermoplastischem Kunststoff, wie Cellulosederivate,   Polyvinylehlorid,        Ultramideo,   Lu-      polen   (eingetragene blarken),    Polystyrol, Polyamide,   Polyäthylene    usw.

   Das Verfahren besteht darin, dass die Muffe vor dem Ge  brauch    in ein Bad, bestehend aus einer das Aufquellen der Muffe bewirkenden Flüssigkeit gebraeht und naeh Erreiehung eines durch Aufquellen vergrösserten Innendurchmessers auf die zu verbindenden Rohrenden aufge  steekt    wird, auf welchen die   Sehrumpfung    und   Erhärtung der Muffe durch Verflüchti-    gung der im Bad aufgenommenen Stoffe sich vollzieht, wobei eine hermetisch dichtende   Umsehliessung    der Rohrenden durch die   Aluffe erreieht    wird.



   Bei der zur Herstellung der   Rohrverbin-    dung dienenden Rohrmuffe ist gemäss der Erfindung der Innendurchmesser kleiner als der Aussendurchmesser der beiden miteinander zu verbindenden Rohrenden. Diese Rohrmuffe kann als   gerade Muffe, Winkel-    bogenmuffe,   T-Stückmuffe, Reduktionsmuffe    usw. ausgebildet sein.



   In der Zeichnung sind beispielsweise Aus  führungsformen    des Erfindungsgegenstandes dargestellt, und zwar zeigt :
Fig.   1    eine Ausführung der Muffe als gerades   Verbindungsstüek,   
Fig. 2 eine Ausführungsform der Muffe als   Winkelstüek,   
Fig. 3 eine Ausführungsform der Muffe als   T-Stüek    und
Fig. 4 bis 6 eine Reduktionsmuffe vor dem Bad, nach dem Bad sowie in montiertem Zustande nach der Schrumpfung und Erhärtung auf den Rohrenden.



   Die in den Fig.   1    bis 4 dargestellten Verbindungsmuffen sind beispielsweise aus Poly äthylen oder einem andern Kunststoff hergestellt. Sie weisen in ihrem   Innendurchmes-    ser gegenüber den zu verbindenden Rohrenden etwa 20  /o Untermass auf, das heisst die lichte Weite der Verbindungsmuffe muss kleiner sein, als der Aussendurchmesser der zu verbindenden Rohrenden.



   Diese Kunststoffmuffen werden im Sinne des Verfahrens zur Herstellung einer Rohrverbindung vor dem Gebraueh, das heisst vor der Montage in ein Bad aus Methylenchlorid oder Azeton eingelegt, bis sie beispielsweise   Un'113    ihres ursprünglichen   Innendurchmes-    sers durch Aufquellen grosser geworden sind.



  Bei diesem Bad wird der   Kunststoffmuffe    während des   Aufquellens    der Weichmacher entzogen. Die   aufgequollene    Muffe wird aus dem Bad herausgenommen und kann nun leicht auf die zu verbindenden Rohrenden aufgesteekt werden. Durch Verdunsten des von der Kunststoffmuffe während des Bades auf  genommenen Methylenehlorides    bzw. Azetons   schrumpft    die Muffe, indem sie die Rohrenden mit zunehmender Spannung umschliesst, auf ihr ursprüngliches Volumen zusammen, wobei sie   sieh    infolge Fehlens des Weichmachers erhärtet. Durch die bei der Schrumpfung erzeugte Spannung in der Umschliessung der Rohrenden wird eine vollkommende Dichtung der Rohrverbindung sowie ein überraschend fester Halt der Rohrenden in der Muffe erzielt.

   Die durch den   Entzug des Weieh-    machers bewirkte zusätzliehe Erhärtung trägt noch erheblich bei zur Erhaltung einer stabilen Rohrverbindung.



   Je nach der Art des für die Muffe verwendeten Kunststoffes ist auch eine entspre  chende,    das Aufquellen der Muffe bewirkende Flüssigkeit für das Bad zu verwenden. Dabei ist der Entzug des Weichmachers von   sekun-      därer    Bedeutung.



   Bei der Ausführungsform nach Fig.   1    handelt es   sieh    um eine gerade Verbindungsmuffe   1    von üblieher Form, in deren Hohlraum in der Mitte ein ringförmiger Rohranschlag 2 aus Metall, Kork oder Kunststoff vorgesehen ist. Der   Rohranschlag    kann auch aus gleichem Material wie die Muffe und aus einem Stüek mit derselben bestehen, wie dies bei der win  kelförmigen    Rohrmuffe in Fig.   2,    bei der   T-formigen    Rohrmuffe in Fig. 3 sowie auch bei der   Reduktionsmuffe    in Fig. 4 bis 6 der Fall ist. Die Rohre 3 stossen satt an den   Rohranschlag    2 an.

   Bei der   Reduktionsmuffe    gemäss den Fig.   4    bis 6 ist in Fig. 5 die Muffe in   aufgequollenem    Zustande unmittelbar naeh dem Bade veranschaulicht.



      PS TENTANSPROCHE   
I. Verfahren zur   Herstellung'einer    Rohrverbindung mit einer   Kunststoffmuffe,    dadurch gekennzeichnet, dass die Muffe vor dem Gebraueh in ein Bad, bestehend aus einer das Aufquellen der Muffe bewirkenden Flüs  sigkeit,    gebraeht und nach Erreichung eines durch Aufquellen   vergrösserten Innendurch-    messers auf die zu verbindenden Rohrenden aufgesteekt wird, auf welchen die   Sehrump-      fung    und Erhärtung der Muffe durch Ver  flüchtigung    der im Bad aufgenommenen Stoffe sieh vollzieht, wobei eine hermetisch dichtende   Umsehliessung    der Rohrenden dureh die Muffe erreicht wird.



   II.   Kunststoffmuffe    zur Ausübung des Verfahrens naeh   Patentansprueh    I, dadureh gekennzeichnet, dass der Innendurchmesser dieser Muffe kleiner ist als der Aussendurchmesser der durch sie zu verbindenden Rohrenden.



  



  Process for producing a pipe connection and connecting sleeve used for carrying out the method Pipe connecting sleeves made of plastic are known. These are specifically required for connecting pipes for conducting aggressive oil and require a complicated fastening and sealing procedure.



   The present invention relates to a method for producing a pipe connection using a connecting sleeve made of plastic, in particular thermoplastic material, such as cellulose derivatives, polyvinyl chloride, ultramideo, lupoles (registered blarks), polystyrene, polyamides, polyethylene, etc.

   The method consists in that the socket is brewed in a bath consisting of a liquid that causes the socket to swell before use and, after an internal diameter enlarged by swelling, is attached to the pipe ends to be connected, on which the swelling and hardening of the Sleeve takes place through the evaporation of the substances absorbed in the bath, whereby a hermetically sealed enclosure of the pipe ends is achieved by the aluminum sleeve.



   In the case of the pipe socket used to produce the pipe connection, according to the invention, the inside diameter is smaller than the outside diameter of the two pipe ends to be connected to one another. This pipe socket can be designed as a straight socket, elbow socket, T-piece socket, reduction socket, etc.



   In the drawing, for example, embodiments of the subject matter of the invention are shown, namely:
Fig. 1 shows an embodiment of the sleeve as a straight connecting piece,
Fig. 2 shows an embodiment of the sleeve as an angle piece,
Fig. 3 shows an embodiment of the sleeve as a T-piece and
4 to 6 show a reduction sleeve before the bath, after the bath and in the assembled state after the shrinkage and hardening on the pipe ends.



   The connecting sleeves shown in Figs. 1 to 4 are made for example of poly ethylene or another plastic. In terms of their inner diameter, they are about 20% undersize compared to the pipe ends to be connected, that is to say the inside diameter of the connecting sleeve must be smaller than the outer diameter of the pipe ends to be connected.



   In the sense of the process for producing a pipe connection, these plastic sleeves are placed in a bath of methylene chloride or acetone before use, that is to say before assembly, until, for example, their original internal diameter has increased due to swelling.



  In this bath, the plasticizer is removed from the plastic sleeve while it swells. The swollen sleeve is taken out of the bath and can now be easily attached to the pipe ends to be connected. The evaporation of the methylene chloride or acetone absorbed by the plastic socket during the bath causes the socket to shrink to its original volume by enclosing the pipe ends with increasing tension, whereby it hardens due to the lack of the plasticizer. As a result of the tension generated in the enclosure of the pipe ends during the shrinkage, a complete seal of the pipe connection and a surprisingly firm hold of the pipe ends in the socket is achieved.

   The additional hardening caused by the withdrawal of the softener still contributes significantly to maintaining a stable pipe connection.



   Depending on the type of plastic used for the sleeve, a corresponding, the swelling of the sleeve causing liquid to be used for the bath. The removal of the plasticizer is of secondary importance.



   The embodiment according to FIG. 1 is a straight connecting sleeve 1 of usual shape, in the cavity of which an annular pipe stop 2 made of metal, cork or plastic is provided in the middle. The pipe stop can also be made of the same material as the sleeve and of one piece with the same, as in the case of the angled pipe socket in Fig. 2, the T-shaped pipe socket in Fig. 3 and also the reduction socket in Fig. 4 to 6 is the case. The tubes 3 abut the tube stop 2 snugly.

   In the case of the reduction sleeve according to FIGS. 4 to 6, FIG. 5 shows the sleeve in the swollen state immediately after the bath.



      PS TENTANSPROCHE
I. A method for producing a pipe connection with a plastic sleeve, characterized in that the sleeve is poured into a bath consisting of a liquid which causes the sleeve to swell before it is used and, after an internal diameter that is enlarged by swelling, is approached connecting pipe ends is plugged on, on which the vascularization and hardening of the socket takes place through volatilization of the substances absorbed in the bath, with a hermetically sealed enclosure of the pipe ends through the socket.



   II. Plastic socket for carrying out the method according to patent claim I, characterized in that the inside diameter of this socket is smaller than the outside diameter of the pipe ends to be connected by it.


    

Claims (1)

IJNTERANSPRÜCHE 1. Verfahren naeh Patentanspruch I, dadurch gekennzeichnet, dass die Muffe vor der Montage in ein Bad aus Methylenehlorid gebracht wird. INTERCLAIMS 1. The method according to claim I, characterized in that the sleeve is placed in a bath of methylene chloride before assembly. 2. Verfahren nach Patentanspruch I. dadurch gekennzeichnet, dass die Muffe vor der Montage in ein Bad aus Azeton gebracht wird. 2. The method according to claim I. characterized in that the sleeve is placed in a bath of acetone before assembly. 3. Kunststoffmuffe nach Patentanspruch II, dadurch gekennzeichnet, dass sie im Innern eine in der Mitte befindliehe Ringschulter als Rohransehlag aufweist. 3. Plastic sleeve according to claim II, characterized in that it has a ring shoulder located in the center as a Rohransehlag inside. 4. Kunststoffmuffe nach Patentansprueh II, dadmeh gekennzeichnet, dass sie aus thermoplastisehem Kunststoff besteht. 4. Plastic sleeve according to patent claim II, dadmeh characterized in that it consists of thermoplastic plastic.
CH334763D 1955-12-12 1955-12-12 Method for producing a pipe connection and connecting sleeve used for carrying out the method CH334763A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH334763T 1955-12-12

Publications (1)

Publication Number Publication Date
CH334763A true CH334763A (en) 1958-12-15

Family

ID=4503308

Family Applications (1)

Application Number Title Priority Date Filing Date
CH334763D CH334763A (en) 1955-12-12 1955-12-12 Method for producing a pipe connection and connecting sleeve used for carrying out the method

Country Status (1)

Country Link
CH (1) CH334763A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2702542A1 (en) * 1976-01-22 1977-07-28 Raychem Corp HEAT RESET, HOLLOW METALLIC COUPLING
FR2615266A1 (en) * 1987-05-12 1988-11-18 Renault Device for connecting a flexible duct onto a rigid end-fitting
US4954299A (en) * 1986-08-18 1990-09-04 Greig John M Structures of plastics material

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2702542A1 (en) * 1976-01-22 1977-07-28 Raychem Corp HEAT RESET, HOLLOW METALLIC COUPLING
FR2339121A1 (en) * 1976-01-22 1977-08-19 Raychem Corp THERMAL RETURN COUPLING SLEEVE
US4954299A (en) * 1986-08-18 1990-09-04 Greig John M Structures of plastics material
FR2615266A1 (en) * 1987-05-12 1988-11-18 Renault Device for connecting a flexible duct onto a rigid end-fitting

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