AT399049B - CONNECTING PIPE - Google Patents

CONNECTING PIPE Download PDF

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Publication number
AT399049B
AT399049B AT0136690A AT136690A AT399049B AT 399049 B AT399049 B AT 399049B AT 0136690 A AT0136690 A AT 0136690A AT 136690 A AT136690 A AT 136690A AT 399049 B AT399049 B AT 399049B
Authority
AT
Austria
Prior art keywords
connection
welding flange
piece
ring
film
Prior art date
Application number
AT0136690A
Other languages
German (de)
Other versions
ATA136690A (en
Inventor
Walter Dkfm Ing Neumueller
Original Assignee
Bauveg Baubetrieb Gmbh
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 Bauveg Baubetrieb Gmbh filed Critical Bauveg Baubetrieb Gmbh
Priority to AT0136690A priority Critical patent/AT399049B/en
Priority to DE4120785A priority patent/DE4120785C2/en
Priority to CH1896/91A priority patent/CH683873A5/en
Priority to FR9107957A priority patent/FR2664020B1/en
Publication of ATA136690A publication Critical patent/ATA136690A/en
Application granted granted Critical
Publication of AT399049B publication Critical patent/AT399049B/en

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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
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/40—General aspects of joining substantially flat articles, e.g. plates, sheets or web-like materials; Making flat seams in tubular or hollow articles; Joining single elements to substantially flat surfaces
    • B29C66/47—Joining single elements to sheets, plates or other substantially flat surfaces
    • B29C66/474—Joining single elements to sheets, plates or other substantially flat surfaces said single elements being substantially non-flat
    • B29C66/4742—Joining single elements to sheets, plates or other substantially flat surfaces said single elements being substantially non-flat said single elements being spouts
    • B29C66/47421—Joining single elements to sheets, plates or other substantially flat surfaces said single elements being substantially non-flat said single elements being spouts said spouts comprising flanges
    • 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
    • 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
    • B29C65/82—Testing the joint
    • B29C65/8207—Testing the joint by mechanical methods
    • B29C65/8246—Pressure tests, e.g. hydrostatic pressure tests
    • 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
    • B29C66/004—Preventing sticking together, e.g. of some areas of the parts to be joined
    • 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
    • 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
    • B29C66/13—Single flanged joints; Fin-type joints; Single hem joints; Edge joints; Interpenetrating fingered joints; Other specific particular designs of joint cross-sections not provided for in groups B29C66/11 - B29C66/12
    • B29C66/131—Single flanged joints, i.e. one of the parts to be joined being rigid and flanged 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
    • B29C66/01—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
    • B29C66/70—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
    • B29C66/73—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 intensive physical properties of the material of the parts to be joined, by the optical properties of the material of the parts to be joined, by the extensive physical properties of the parts to be joined, by the state of the material of the parts to be joined or by the material of the parts to be joined being a thermoplastic or a thermoset
    • B29C66/739—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 intensive physical properties of the material of the parts to be joined, by the optical properties of the material of the parts to be joined, by the extensive physical properties of the parts to be joined, by the state of the material of the parts to be joined or by the material of the parts to be joined being a thermoplastic or a thermoset characterised by the material of the parts to be joined being a thermoplastic or a thermoset
    • B29C66/7392—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 intensive physical properties of the material of the parts to be joined, by the optical properties of the material of the parts to be joined, by the extensive physical properties of the parts to be joined, by the state of the material of the parts to be joined or by the material of the parts to be joined being a thermoplastic or a thermoset characterised by the material of the parts to be joined being a thermoplastic or a thermoset characterised by the material of at least one of the parts being a thermoplastic
    • 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
    • B29C66/73—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 intensive physical properties of the material of the parts to be joined, by the optical properties of the material of the parts to be joined, by the extensive physical properties of the parts to be joined, by the state of the material of the parts to be joined or by the material of the parts to be joined being a thermoplastic or a thermoset
    • B29C66/739—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 intensive physical properties of the material of the parts to be joined, by the optical properties of the material of the parts to be joined, by the extensive physical properties of the parts to be joined, by the state of the material of the parts to be joined or by the material of the parts to be joined being a thermoplastic or a thermoset characterised by the material of the parts to be joined being a thermoplastic or a thermoset
    • B29C66/7392—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 intensive physical properties of the material of the parts to be joined, by the optical properties of the material of the parts to be joined, by the extensive physical properties of the parts to be joined, by the state of the material of the parts to be joined or by the material of the parts to be joined being a thermoplastic or a thermoset characterised by the material of the parts to be joined being a thermoplastic or a thermoset characterised by the material of at least one of the parts being a thermoplastic
    • B29C66/73921—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 intensive physical properties of the material of the parts to be joined, by the optical properties of the material of the parts to be joined, by the extensive physical properties of the parts to be joined, by the state of the material of the parts to be joined or by the material of the parts to be joined being a thermoplastic or a thermoset characterised by the material of the parts to be joined being a thermoplastic or a thermoset characterised by the material of at least one of the parts being a thermoplastic characterised by the materials of both parts being thermoplastics
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
    • G01M3/00—Investigating fluid-tightness of structures
    • G01M3/02—Investigating fluid-tightness of structures by using fluid or vacuum
    • G01M3/027—Details with respect to the testing of elastic elements, e.g. gloves, condoms
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
    • G01M3/00—Investigating fluid-tightness of structures
    • G01M3/02—Investigating fluid-tightness of structures by using fluid or vacuum
    • G01M3/26—Investigating fluid-tightness of structures by using fluid or vacuum by measuring rate of loss or gain of fluid, e.g. by pressure-responsive devices, by flow detectors
    • G01M3/28—Investigating fluid-tightness of structures by using fluid or vacuum by measuring rate of loss or gain of fluid, e.g. by pressure-responsive devices, by flow detectors for pipes, cables or tubes; for pipe joints or seals; for valves ; for welds
    • G01M3/2884—Investigating fluid-tightness of structures by using fluid or vacuum by measuring rate of loss or gain of fluid, e.g. by pressure-responsive devices, by flow detectors for pipes, cables or tubes; for pipe joints or seals; for valves ; for welds for welds

Description

AT 399 049 BAT 399 049 B

Die Erfindung bezieht sich auf einen Anschluß zur Prüfung der Dichtheit zweier thermoplastischer Folienbahnen gemäß dem Oberbegriff des Anspruches 1. Nähte zur Verbindung zweier Folienbahnen werden häufig bei Tunnelauskleidungen verwendet, wobei die Notwendigkeit der Prüfung auf Dichtheit der Naht, bzw. des zwischen den Nähten eingeschlossenen Raumes besteht.The invention relates to a connection for testing the tightness of two thermoplastic film webs according to the preamble of claim 1. Seams for connecting two film webs are often used in tunnel linings, the need for testing for tightness of the seam, or the space enclosed between the seams consists.

Bisher wurden die zum Anschluß einer Vakuumquelle erforderlichen Anschlußrohre direkt mit einer Folie verbunden, wobei sich aber häufig Probleme hinsichtlich der Dichtheit der an der Mantelfläche eines entsprechenden Rohres angepreßten Folie ergaben.So far, the connecting pipes required for connecting a vacuum source have been connected directly to a film, but problems with the tightness of the film pressed onto the outer surface of a corresponding pipe have often arisen.

Ziel der Erfindung ist es diese Nachteile zu vermeiden und einen Anschluß der eingangs erwähnten Art vorzuschlagen, der sich relativ leicht mit den Dichtungsbahnen verschweißen läßt und ein hohes Maß an Dichtheit gewährleistet.The aim of the invention is to avoid these disadvantages and to propose a connection of the type mentioned at the outset, which can be welded relatively easily to the sealing sheets and ensures a high degree of tightness.

Erfindungsgemäß wird dies bei einem Anschluß der eingangs erwähnten Art durch die kennzeichnenden Merkmale des Anspruches 1 erreicht.According to the invention this is achieved with a connection of the type mentioned at the outset by the characterizing features of claim 1.

Auf diese Weise kann die obere Folie im Bereich der Doppelnaht einfach mit dem Stutzen verbunden werden, wodurch sich ein hohes Maß an Dichtheit bei der Verbindung der Folie mit dem Stutzen erreichen läßt.In this way, the upper film in the area of the double seam can be easily connected to the nozzle, which allows a high degree of tightness to be achieved when the film is connected to the nozzle.

Außerdem ergibt sich auch der Vorteil, daß es bei einer Kontrolle der Dichtheit mit Unterdrück nicht zu einem Verschluß des Stutzens, bzw. seiner Öffnung durch die untere Folie kommen kann, da durch die Noppen bzw. Erhebungen ein entsprechender Abstand zwischen der Unterseite des Flansches und der Innenseite der unteren Folie sichergestellt ist, sodaß zumindest Spalte freibleiben, durch die hindurch die Luft aus dem zwischen den einzelnen Nähten der Doppelnaht verbleibenden Raum abgesaugt werden kann.In addition, there is also the advantage that a check of the tightness with negative pressure cannot result in a closure of the nozzle or its opening through the lower film, since a corresponding distance between the underside of the flange and the inside of the lower film is ensured, so that at least gaps remain, through which the air can be sucked out of the space remaining between the individual seams of the double seam.

Durch die Merkmale des Anspruches 2 ist ein einfacher Anschluß des Stutzens an einen mit der Vakuumquelle verbundenen Schlauch möglich.Due to the features of claim 2, a simple connection of the nozzle to a hose connected to the vacuum source is possible.

Bei einer bevorzugten Ausführungsform der Erfindung ist vorgesehen, daß der Stutzen von einem mit dem Schweißflansch verbundenen, vorzugsweise mit einem Gewinde versehenen Ring umgeben ist.In a preferred embodiment of the invention it is provided that the socket is surrounded by a ring which is connected to the welding flange and is preferably provided with a thread.

Auf diese Weise ist es möglich den Stutzen, bzw. den an diesem angeschlossenen Schlauch durch ein Schutzrohr zu führen, das auf das Gewinde des Ringes aufgeschraubt werden kann. Dies ermöglicht es z.B. während Betonierarbeiten den Schlauch gegen Beschädigungen sicher zu schützen.In this way, it is possible to lead the nozzle or the hose connected to it through a protective tube that can be screwed onto the thread of the ring. This enables e.g. protect the hose against damage during concreting work.

Als besonders vorteilhaft hat es sich erwiesen, wenn der Stutzen mit dem Schweißflansch und gegebenenfalls dem Ring einstückig ausgebildet, und vorzugsweise durch Spritzgießen einer thermoplastischen Kunststoffmasse hergestellt ist.It has proven to be particularly advantageous if the connection piece is made in one piece with the welding flange and, if appropriate, the ring, and is preferably produced by injection molding a thermoplastic material.

Dadurch wird eine dichte Verbindung des Schweißflansches mit dem Stutzen und dem Ring auf einfachste Weise hergestellt.As a result, a tight connection of the welding flange with the socket and the ring is produced in the simplest way.

Der Anschluß weist vorzugsweise eine mittlere Shorehärte von 75 bis 90 auf, da bei diesen Werten der Stutzen einerseits flexibel genug ist, um eine gute Verschweißbarkeit mit der Folie sicherzustellen und andererseits hart genug ist, um eine ausreichende Formbeständigkeit zu gewährleisten.The connection preferably has an average Shore hardness of 75 to 90, since at these values the nozzle is flexible enough on the one hand to ensure good weldability with the film and on the other hand is hard enough to ensure sufficient dimensional stability.

Die Erfindung wird nun anhand der Zeichnung näher erläutert, die einen erfindungsgemäßen Anschluß zeigt.The invention will now be explained in more detail with reference to the drawing, which shows a connection according to the invention.

Der erfindungsgemäße Anschluß weist einen Schweißflansch 1 auf, der mit der Innenseite der oberen Folie 2 verschweißt ist, die mit der unteren Folie 3 mittels einer nicht dargestellten Naht verbunden ist. Die Unterseite des Schweißflansches 1 ist mit Noppen 4 versehen, zwischen denen Durchlässe 5 ausgespart sind, durch die hindurch die Luft beim Evakuieren des Raumes 6 zwischen den doppellagigen Dichtungsbahnen hindurchströmen kann und die ein dichtes Verschließen der Öffnung 7 des Stutzens 8, der mit dem Schweißfiansch einstückig verbunden ist, verhindern.The connection according to the invention has a welding flange 1, which is welded to the inside of the upper film 2, which is connected to the lower film 3 by means of a seam, not shown. The underside of the welding flange 1 is provided with knobs 4, between which passages 5 are recessed, through which the air can flow when the space 6 is evacuated between the double-layer sealing sheets and which tightly closes the opening 7 of the connector 8, which is connected to the welding flange is connected in one piece, prevent.

Der Stutzen 8 ist im Bereich seines freien Endes mit einer Abstufung 9 versehen, auf die eine nicht dargestellte Normtülle aufsteckbar ist, mit der ein zu einer Vakuumquelle führender, nicht dargestellter Schlauch an den Stutzen angeschlossen werden kann.The connector 8 is provided in the region of its free end with a gradation 9, onto which a standard nozzle, not shown, can be attached, with which a hose, not shown, leading to a vacuum source can be connected to the connector.

Der Stutzen 8 ist von einem mit dem Schweißflansch 1 ebenfalls einstückig verbundenen Ring 10 umgeben, der mit einem Gewinde 11 versehen ist, auf das ein Schutzrohr (nicht dargestellt) aufschraubbar ist, das den angeschlossenen Schlauch vor einer Beschädigung schützt. Dabei ist es auch möglich während der Prüfung der Doppelnaht, bei der in dem Raum 6 zwischen den Folien 2, 3 ein Unterdrück angelegt und das Ansteigen des Druckes bei abgeschalteter Vakuumquelle beobachtet wird, im Bereich der Naht Betonierungsarbeiten durchzuführen, da der Anschlußschlauch durch das erwähnte Schutzrohr gegen Beschädigungen gesichert ist.The socket 8 is surrounded by a ring 10, which is also connected in one piece to the welding flange 1 and is provided with a thread 11, onto which a protective tube (not shown) can be screwed, which protects the connected hose from damage. It is also possible to carry out concreting work in the area of the seam during the testing of the double seam, in which a negative pressure is applied in the space 6 between the foils 2, 3 and the increase in pressure is observed with the vacuum source switched off, since the connecting hose through the mentioned Protective tube is secured against damage.

Der Anschluß ist zweckmäßigerweise durch Spritzgießen hergestellt, wobei ein Kunststoff verwendet wird, der sich gut mit der Folie 2 verschweißen läßt und im fertigen Zustand des Anschlusses eine Shorehärte zwischen 75 und 90 aufweist. 2The connection is expediently produced by injection molding, a plastic being used which can be easily welded to the film 2 and has a Shore hardness between 75 and 90 in the finished state of the connection. 2nd

Claims (5)

AT 399 049 B Patentansprüche 1. Anschluß zur Prüfung der Dichtheit zweier thermoplastischer Foiienbahnen, die mittels Flächenabschnitte umschließender Nähte aufeinandergeschweißt sind, dadurch gekennzeichnet, daß ein mit einem Schweißflansch (1) versehener Stutzen (8) vorgesehen ist, der mit der Oberseite seines Schweißflansches (1) mit der Innenseite der oberen Folie (2) verschweißt ist, wobei die Unterseite des Schweißflansches mit Erhebungen (4) versehen ist, zwischen denen freie Durchlässe (5) vorhanden sind.AT 399 049 B 1. Connection for testing the tightness of two thermoplastic film webs which are welded to one another by means of seams enclosing surface sections, characterized in that a connection piece (8) provided with a welding flange (1) is provided, which is connected to the top of its welding flange ( 1) is welded to the inside of the upper film (2), the underside of the welding flange being provided with elevations (4) between which there are free passages (5). 2. Anschluß nach Anspruch 1, dadurch gekennzeichnet, daß der Stutzen (8) an seinem freien Ende entsprechend einer Normtülle ausgebildet ist.2. Connection according to claim 1, characterized in that the socket (8) is formed at its free end according to a standard nozzle. 3. Anschluß nach Anspruch 1 oder 2, dadurch gekennzeichnet, daß der Stutzen (8) von einem mit dem Schweißflansch (1) verbundenen, vorzugsweise mit einem Gewinde (11) versehenen Ring (10) umgeben ist.3. Connection according to claim 1 or 2, characterized in that the connection piece (8) is surrounded by a ring (10) connected to the welding flange (1), preferably provided with a thread (11). 4. Anschluß, nach einem der Ansprüche 1 dis 3, dadurch gekennzeichnet, daß der Stutzen (8) mit dem Schweißflansch (1) und gegebenenfalls dem Ring (10) einstückig ausgebildet, und vorzugsweise durch Spritzgießen einer thermoplastischen Kunststoffmasse hergestellt ist.4. Connection, according to one of claims 1 to 3, characterized in that the connecting piece (8) with the welding flange (1) and optionally the ring (10) is formed in one piece, and is preferably produced by injection molding a thermoplastic material. 5. Anschluß nach einem der Ansprüche 1 bis 4, dadurch gekennzeichnet, daß der Anschluß eine mittlere Shorehärte von 75 bis 90 aufweist Hiezu 1 Blatt Zeichnungen 35. Connection according to one of claims 1 to 4, characterized in that the connection has an average Shore hardness of 75 to 90. Here 1 sheet of drawings 3rd
AT0136690A 1990-06-27 1990-06-27 CONNECTING PIPE AT399049B (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
AT0136690A AT399049B (en) 1990-06-27 1990-06-27 CONNECTING PIPE
DE4120785A DE4120785C2 (en) 1990-06-27 1991-06-24 Connecting piece
CH1896/91A CH683873A5 (en) 1990-06-27 1991-06-26 Hydrants.
FR9107957A FR2664020B1 (en) 1990-06-27 1991-06-27 CONNECTING TUBE FOR CHECKING THE SEALING OF PLASTIC SHEETS.

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
AT0136690A AT399049B (en) 1990-06-27 1990-06-27 CONNECTING PIPE

Publications (2)

Publication Number Publication Date
ATA136690A ATA136690A (en) 1994-07-15
AT399049B true AT399049B (en) 1995-03-27

Family

ID=3512327

Family Applications (1)

Application Number Title Priority Date Filing Date
AT0136690A AT399049B (en) 1990-06-27 1990-06-27 CONNECTING PIPE

Country Status (4)

Country Link
AT (1) AT399049B (en)
CH (1) CH683873A5 (en)
DE (1) DE4120785C2 (en)
FR (1) FR2664020B1 (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102010033114A1 (en) * 2010-08-02 2012-02-02 Siemens Aktiengesellschaft Pipe joint has sealing surface that is provided for engaging to be bonded metal sheets that are arranged between two points in region of adhesive joint surface
CN105004496A (en) * 2015-08-19 2015-10-28 核工业理化工程研究院 Device for detecting sealing of ultrasonically welded seam

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB779240A (en) * 1953-03-24 1957-07-17 Leopold Rado Collapsible container and method for the production thereof
GB853082A (en) * 1957-12-13 1960-11-02 Meyer Horst Improvements in or relating to inflatable balls
BE795542A (en) * 1972-02-18 1973-06-18 Dynamit Nobel Ag METHOD AND DEVICE FOR CHECKING THE LEAKAGE OF THE WELDING CORDS OF PLASTIC STRIPS IN A VACUUM
DE3201515A1 (en) * 1982-01-20 1983-07-28 Manfred 5210 Troisdorf Hawerkamp "METHOD AND DEVICE FOR TESTING WELDED SEALED COMPONENTS MADE OF THERMOPLASTIC PLASTIC, ESPECIALLY WELDED PLASTIC TUBES AND PLASTIC CONTAINERS"
AT372787B (en) * 1982-03-17 1983-11-10 Bauveg Bergbau Gmbh METHOD FOR MEASURING THE TIGHTNESS OF MULTIPLE WELDING SEAMS
EP0098322A1 (en) * 1982-07-07 1984-01-18 Bier-Drive Ag Plastic bag
US4733555A (en) * 1987-04-13 1988-03-29 Franks Stephen H Pressure entry and test system

Also Published As

Publication number Publication date
FR2664020B1 (en) 1994-04-15
FR2664020A1 (en) 1992-01-03
DE4120785A1 (en) 1992-01-02
ATA136690A (en) 1994-07-15
CH683873A5 (en) 1994-05-31
DE4120785C2 (en) 2000-10-05

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