WO2022137101A1 - Dispositif de raccordement à la presse - Google Patents

Dispositif de raccordement à la presse Download PDF

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Publication number
WO2022137101A1
WO2022137101A1 PCT/IB2021/062067 IB2021062067W WO2022137101A1 WO 2022137101 A1 WO2022137101 A1 WO 2022137101A1 IB 2021062067 W IB2021062067 W IB 2021062067W WO 2022137101 A1 WO2022137101 A1 WO 2022137101A1
Authority
WO
WIPO (PCT)
Prior art keywords
tubular portion
coupling portion
fitting
fitting device
plastic
Prior art date
Application number
PCT/IB2021/062067
Other languages
English (en)
Inventor
Paolo ARRUS
Matteo Fantoni
Marco ROSA BRUSIN
Michele SAVOINI
Andrea ZUFFELLATO
Original Assignee
Giacomini S.P.A.
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 Giacomini S.P.A. filed Critical Giacomini S.P.A.
Priority to EP21844399.2A priority Critical patent/EP4267877A1/fr
Priority to CN202180084032.2A priority patent/CN116635168A/zh
Publication of WO2022137101A1 publication Critical patent/WO2022137101A1/fr

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L33/00—Arrangements for connecting hoses to rigid members; Rigid hose connectors, i.e. single members engaging both hoses
    • F16L33/20—Undivided rings, sleeves or like members contracted on the hose or expanded in the hose by means of tools; Arrangements using such members
    • F16L33/207—Undivided rings, sleeves or like members contracted on the hose or expanded in the hose by means of tools; Arrangements using such members only a sleeve being contracted on the hose
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L25/00—Constructive types of pipe joints not provided for in groups F16L13/00 - F16L23/00 ; Details of pipe joints not otherwise provided for, e.g. electrically conducting or insulating means
    • F16L25/02—Electrically insulating joints or couplings
    • 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
    • F16L33/00—Arrangements for connecting hoses to rigid members; Rigid hose connectors, i.e. single members engaging both hoses
    • F16L33/01—Arrangements for connecting hoses to rigid members; Rigid hose connectors, i.e. single members engaging both hoses adapted for hoses having a multi-layer wall
    • 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
    • F16L33/00—Arrangements for connecting hoses to rigid members; Rigid hose connectors, i.e. single members engaging both hoses
    • F16L33/20—Undivided rings, sleeves or like members contracted on the hose or expanded in the hose by means of tools; Arrangements using such members
    • F16L33/207—Undivided rings, sleeves or like members contracted on the hose or expanded in the hose by means of tools; Arrangements using such members only a sleeve being contracted on the hose
    • F16L33/2071—Undivided rings, sleeves or like members contracted on the hose or expanded in the hose by means of tools; Arrangements using such members only a sleeve being contracted on the hose the sleeve being a separate connecting member
    • F16L33/2073—Undivided rings, sleeves or like members contracted on the hose or expanded in the hose by means of tools; Arrangements using such members only a sleeve being contracted on the hose the sleeve being a separate connecting member directly connected to the rigid member
    • 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
    • F16L13/00—Non-disconnectible pipe-joints, e.g. soldered, adhesive or caulked joints
    • F16L13/02—Welded joints

Definitions

  • the present invention refers to press fittings for coupling to pipes in plastic material (e.g. multilayer type) of the type that can be used in plumbing systems or for transporting gaseous fuels.
  • plastic material e.g. multilayer type
  • the press fitting of Figure 1 includes a fitting body 200, comprising a coupling portion 201 (having a male thread) intended to be connected to a component of the plumbing system, and an insertion portion 202.
  • the insertion portion 202 is intended to be inserted inside the pipe to be connected to (not shown) and on which a metal sleeve 203 is compressed, by cold deformation obtained with suitable jaws.
  • the insertion portion 202 is provided with ring seals 204 that contact the tube shod on the insertion portion 202.
  • a matching member 205 is provided for use in properly positioning the compression jaws of the metal sleeve 203.
  • the press fitting in Figure 1 is of the "straight" type, but can be made in other configurations (e.g., curved at 45°, 90°, or T-shaped).
  • Some possible configurations of known type press fittings are shown in the October 2020 catalog of the same Applicant and related to multi-pin press fittings, RM series: https:/ / static.giacomini.com/ giacomini.com/ catalog/ technical_documentation/ patent/ RM-FITTINGS.pdf.
  • the insertion portion 202 has an inside diameter that is significantly smaller than the diameter of the pipe into which it is inserted. Further, the installation procedure for this type of fitting typically requires preparation of the end of the pipe (flaring and calibration) prior to fitting it to the insertion portion 202 which is quite onerous.
  • Document US-A-6866302 describes metal fitting mounted on a hose for transporting hydrogen, air conditioner refrigerant, or automotive fuel.
  • the hose has a body-tube formed from corrugated metal tubing and layers of rubber or resin.
  • Document DE-A-20212772U1 describes a pressable connection comprising a fitting on which there is a first pressable section in the form of a sleeve and a second pressable section. Between these pressable sections is provided a collar in which a sealing ring is inserted.
  • Document US-A-2250286 relates to a fitting for fabric, rubber, and possibly metal lined piping and describes a sleeve intended to surround the piping and having a collar which houses a ring.
  • the technical problem addressed by the present invention is to provide a fitting device, of the press-fit type, for plastic tube, that at least partially overcomes the limitations of known type fittings with respect to fluid flow rate in the fitting and safety with respect to outward fluid leakage.
  • FIG. 1 shows a longitudinal section of a press fitting of known type
  • FIG. 2 shows a longitudinal section of an example of a fitting device according to a first embodiment of the present invention
  • figure 3 shows in perspective view an exploded view of a fitting device similar to that of figure 2;
  • FIG. 4 shows in longitudinal section an example of a fitting device in relation to a second form of implementation of the present invention
  • figure 5 shows in perspective view an exploded view of the fitting device analogous to figure 4;
  • figure 6 shows the device of figure 4 in side view, assembled.
  • Figure 2 and Figure 3 show an example of a fitting device 100 to plastic tube.
  • the fitting device 100 is of the "press fit" type and is employable in fluidic systems such as, typically, plumbing systems (e.g., cooling, heating, and domestic water) or gaseous fuel transport systems, to mechanically connect and fluidically connect one end 4 of a plastic tube with another component (not shown) of the system.
  • fluidic systems such as, typically, plumbing systems (e.g., cooling, heating, and domestic water) or gaseous fuel transport systems, to mechanically connect and fluidically connect one end 4 of a plastic tube with another component (not shown) of the system.
  • plastic tube means both tubes made by one or more layers of plastic material (e.g., polyvinyl chloride, polyethylene, polypropylene) between which are, optionally, arranged glues or adhesive layers, and multilayer plastic tube formed of layers of plastic material (e.g., cross-linked polyethylene), one or more layers of metallic material (e.g., aluminum), and adhesive layers (e.g., glue layers).
  • plastic material e.g., polyvinyl chloride, polyethylene, polypropylene
  • multilayer plastic tube formed of layers of plastic material (e.g., cross-linked polyethylene), one or more layers of metallic material (e.g., aluminum), and adhesive layers (e.g., glue layers).
  • multilayer tubes have the outer layer made of plastic material.
  • the innermost layer i.e., the layer in contact with the fluid, is made of plastic material.
  • the metal layers that may be used are internal to the plastic layers.
  • plastic tubes Some examples of types of materials for plastic tubes are: TEX (cross-linked polyethylene); PEX-A1-PEX (cross-linked polyethylene with aluminum layers); PB (polybutylene); PER-T (multilayer polyethylene).
  • TEX cross-linked polyethylene
  • PEX-A1-PEX cross-linked polyethylene with aluminum layers
  • PB polybutylene
  • PER-T multilayer polyethylene
  • the plastic tube referred to in the present description is of the smooth type i.e. not corrugated.
  • this comprises a fitting body 1 having a coupling portion 2 and a tubular portion 3.
  • the coupling portion 2 is configured to mechanically couple with a component (not shown) of the system while also allowing fluid coupling with said component.
  • a component may be, for example, another coupling device, a metal pipe, an inlet or outlet of a pump or boiler, a shut-off valve, etc.
  • the coupling portion 2 has the outline of a male coupling including a shaped region 7, typically polygonal, having the purpose of providing support planes suitable for housing a tool (typically, a wrench) and an insertion portion 8, which defines within itself a first conduit 6 and has an external thread 5 (i.e., a male thread) .
  • the tubular portion 3, in fluid communication with the coupling portion 2, is configured to house (in particular, in a second conduit 9) the end 4 of the plastic tube.
  • the first conduit 6 and the second conduit 9 have substantially equal diameters and, according to one example, are aligned along a relative longitudinal axis A-A.
  • the first conduit 6 opens onto the second conduit 9 by means of an intermediate passage 10 which has, for example, a reduced diameter compared to that of the first conduit 6.
  • the polygonal-shaped region 7 has a maximum outer diameter greater than the outer diameter of the tubular portion 3 and is connected to the tubular portion 3 by an annular groove 11.
  • the tubular portion 3 is provided with an insertion opening 12 for the end of the plastic tube 4.
  • tubular portion 3 of the fitting body 1 is plastically deformable, (in particular, cold deformable) under the action of compression exerted by suitable pressing tools, such as, for example, jaws, and encircles an outer wall 13 of the tubing end 4.
  • the fitting body 1 (comprising the coupling portion 2 and the tubular portion 3) is manufactured in one piece.
  • the coupling portion 2 and the tubular portion 3 are made of the same material.
  • the manufacturing materials of the fitting body 1, may be metals or metal alloys, such as, for example, steel or stainless steel, copper and its alloys (e.g., brass), bronze, cupronickel.
  • the one-piece fitting body 1 is made by at least one of the following manufacturing processes or combinations thereof: molding (such as, injection molding), machining, casting, cold working such as rolling, drawing, clinching, hydroforming, magnetoforming, or variations thereof.
  • the inner surface of the tubular portion 3 may be smooth, as depicted in Figure 2, or may be shaped to provide sealing reliefs (e.g., teeth) intended to act on the outer wall 13 of the end of the plastic tube 4.
  • the flat surface of the tubular portion 3 of the fitting body 1 allows for the affixing of markings, using different engraving technologies, bearing data of the product or tubing 4 to which it can be fitted.
  • the fitting device 100 includes a sleeve element 14, to be arranged internally to the tubular portion 3 and configured to be surrounded by the end of the plastic tube 4 when it is inserted into the second conduit 9.
  • the sleeve element 14 includes a cylindrical wall 23 provided with a first opening 17 and an opposing second opening 18.
  • the sleeve element 14 is provided, around the second opening 18, with a stop ring 15 that extends externally and perpendicularly to the cylindrical wall 23 of the sleeve element.
  • the stop ring 15 is configured to abut an inner annular wall 16 of the tubular portion 3, such that the sleeve element 14 finds itself facing and in fluid communication with the passage 10.
  • the sleeve element 14 has an inner diameter substantially equal to the inner diameter of the intermediate passage 10 of the coupling portion 2.
  • the sleeve element 14 may be manufactured from copper or alloys thereof (e.g., brass), steel, stainless steel, or a plastic material.
  • the outer surface of the sleeve member 14 may be smooth, as depicted in Figure 2, or may be shaped to provide for sealing reliefs (e.g., teeth).
  • the connecting device 100 may advantageously include a dielectric separator 19 (e.g., of a toroidal or cylindrical shape) to be disposed between the end of the tube 4 (when inserted into the second conduit 9) and a face of the stop ring 15.
  • a dielectric separator 19 e.g., of a toroidal or cylindrical shape
  • the dielectric separator 19 allows to limit the generation of eddy currents, due to the junction of elements with different electronegativity (such as, for example, copper alloys or steel of the junction body 1 and the aluminum present in the end of the tube 4).
  • the dielectric separator 19, which also serves as an anti-slip device for the sleeve element 14, can typically be made of an elastomeric or plastic material.
  • the fitting device 100 preferably includes a match element 20 (for example, a shaped ring) for correct positioning of the jaws, which may be made of a plastic or metallic material.
  • the matching element 20 may be in different colors to provide a visual indication of the size of the tubular portion.
  • the fitting device 100 of Figures 2 and 3 does not necessarily require sealing elements to prevent leakage of fluid from the end of the tubing 4 to the outside of the fitting device.
  • sealing elements may be avoided to be interposed between the sleeve element 14 and the end 4 of the tubing nor between the end of the tubing 4 the tubular portion 3.
  • the fitting device 100 may be provided pre-assembled or may be assembled during installation.
  • the sleeve member 14 is coaxially inserted into the second conduit 9 by bringing the stop ring 15 against the inner wall 16 of the fitting body 1.
  • the dielectric separator 19 is inserted into the second conduit 9 around the sleeve element 14, and against the stop ring 15 so that it acts as a retaining element.
  • a cavity for housing the end of the plastic tube 4 is formed between the outer surface of the sleeve element 14 and the inner surface of the tubular portion 3.
  • the matching member 20 is disposed externally to the coupling body 1 at the annular groove 11 and such that it extends, for example, partially over the tubular portion 3 and partially over the coupling portion 2.
  • the end 4 of the plastic tube is coaxially mounted on the sleeve member 14 such that it is disposed between the sleeve member itself and the tubular portion 3. In particular, the end 4 is inserted until it contacts the dielectric separator 19.
  • the end 4 of the plastic tube is pressed against the outer surface of the sleeve element 14 which, therefore, acts as a reinforcing element that prevents a collapse of said tubing.
  • the deformation to which the tubular portion 3 of the fitting body 1 is subjected places it in integral contact with the end of the tube 4, thus ensuring a seal.
  • the tubular portion 3 is in contact with the outer wall 13 of the tube which is a layer of plastic material.
  • the tubing end 4 is therefore mechanically coupled and in fluid connection with coupling device 1.
  • the coupling portion 2 of the coupling body 1 may be coupled to another component of the system, as already mentioned.
  • the tubular portion 3 is both a structural element of the fitting itself and the press fit element that realizes the grip on the plastic tube.
  • Figures 4-6 refer to a version of the fitting device 100 in which the tubular portion 3 and the coupling portion 2 of the fitting body 1 are not manufactured as one piece, but are manufactured separately and then connected to each other. In such a case, the coupling portion 2 and the tubular portion 3 are connected so as to obtain a permanent connection that ensures a tight connection between said portions 2 and 3.
  • the coupling portion 2 is fabricatable in plastic material, in addition to the materials and techniques described above with reference to the fabrication of the entire coupling body 1 and Figures 2 and 3.
  • the tubular portion 3 can be made from metal or metal alloys (preferably, stainless steel). Said tubular portion 3 may be obtained from a tube, strip or sheet metal, by welding or by cold working or deformation, such as deep drawing, rolling, shearing, sizing. The tubular portion 3 may also be obtained by processing such as welding, brazing, welding/brazing.
  • the permanent connection between the tubular portion 3 and the coupling portion 2 can be obtained during production, for example, by at least one of the following techniques: welding, brazing, braze welding, or cold forming techniques (preferably, magnetoforming) .
  • the coupling portion 2 has an annular portion 21 (i.e., an outer wall of the portion defining the intermediate passage 10) to which the tubular portion 3 is connected.
  • sealing elements 22 e.g., gaskets, Orings
  • annular portion 21 may be disposed between the annular portion 21 and the tubular portion 3.
  • the fitting device 100 (in the two described forms of implementation) is realizable in different sizes for coupling to different types of piping or system components.
  • the fitting device 100 is suitable for coupling to plastic piping events the following outer diameters: 16.00 mm; 20.00 mm; 26.00 mm; 32.00 mm; 40.00 mm; 50.00 mm and 63.00 mm.
  • Coupling portion 2 may have an external thread, as in Figures 2 and 4, or it may have an internal thread (female thread) .
  • the coupling portion 2 can have a geometry such as to allow the realization of connection devices having all the configurations currently available on the market.
  • connection devices having all the configurations currently available on the market.
  • RM series multi-pin press fittings
  • the tubular portion 3 is cylindrical, prior to the deformation action, and is directly in contact with the outer wall 13 of the tubing end 4 without the presence of any interposed teeth or gaskets. Nevertheless, it should be noted that, although not strictly necessary, it is possible to provide, both for the first embodiment of Figures 2 and 3 and for the second embodiment of Figures 4-6, that the tubular portion 3 is provided with a seat, obtained in its inner part, for housing a sealing element, such as a gasket or an Oring.
  • a sealing element such as a gasket or an Oring.
  • the fitting device 100 has a straight (i.e., straight) configuration but, according to a particular implementation form, the coupling portion 2 could be curved, for example at 45° or 90°.
  • press-press a configuration in which the coupling portion 2 is also connected (in one piece or permanently) to another tubular portion 3.
  • the coupling portion 2 is interposed between two tubular portions 3, each available to accommodate relative ends of tubing 4 to be connected.
  • Each of the two tubular portions 3 includes a corresponding sleeve 14 and a corresponding dielectric separator 19 and is provided with a corresponding matching element 20, as described above.
  • the two tubular portions 3 may have the same dimensions or different dimensions of the corresponding inner conduits 6.
  • connection device of the type described above may provide that the coupling portion 2 (intermediate to the two tubular portions 3) is straight or is curved, for example, at 45° or 90°.
  • the coupling portion 2 is shaped to form a curve (of 90°) and is integral with a bracket for wall installation.
  • the coupling portion 2 may be of the T-type (not shown) and have three ports at relative ends. According to a particular configuration, all three ports of said T-type coupling portion 2 are connected (in a manner analogous to that described above for Figures 2 and 4) to a respective tubular portion 3, provided with a corresponding sleeve 14, a corresponding dielectric separator 19 and a corresponding matching element 20.
  • the T-type coupling portion 2 has two of the three ports coupled to respective tubular portions 3 while the third port is a threaded connection, for example analogous to the coupling portion 2 of figure 3 (also in a female threaded version). It is also possible that a shut-off valve is integrated at one of the three ports.
  • the above-described fitting device 100 is advantageous over conventional fittings.
  • the use of a structural portion (i.e., the tubular portion 3) of the same fitting body 1, and not a separate sleeve as is the case with conventional fittings for plastic pipe, as the press element, allows for a passage for the fluid within the fitting of increased diameter.
  • the pipe to be connected is shod over an insertion portion of the fitting that has a significantly reduced inner diameter compared to that of the pipe.
  • the sleeve element 14 of the fitting device 100 can be made with an inner diameter that is only slightly smaller than the pipe diameter.
  • the fitting device 100 is not very sensitive to different profiles of the pressing jaws (i.e., it is multi-press ) since it can be used with different types of jaws.

Abstract

Dispositif de raccordement (100) à un tuyau en plastique d'un système fluidique comprenant : un corps de raccord (1) ayant une partie d'accouplement (2) à un composant du système et une partie tubulaire (3) conçue pour loger une extrémité de la tuyauterie en plastique (4). Le corps de raccord (1) est obtenu d'une seule pièce ou obtenu par une liaison entre la partie d'accouplement (2) et la partie tubulaire (3) d'un type permanent. Le dispositif comprend en outre un élément manchon (14) disposé dans la partie tubulaire (3) et conçu pour être entouré par l'extrémité du tube en plastique (4) lorsqu'il est inséré dans la partie tubulaire (3). La partie tubulaire (3) du corps de raccord (1) est plastiquement déformable de manière à réduire, sous l'action d'une compression, son extension radiale et à comprimer l'extrémité de tube en plastique (4) sur l'élément manchon (14).
PCT/IB2021/062067 2020-12-22 2021-12-21 Dispositif de raccordement à la presse WO2022137101A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
EP21844399.2A EP4267877A1 (fr) 2020-12-22 2021-12-21 Dispositif de raccordement à la presse
CN202180084032.2A CN116635168A (zh) 2020-12-22 2021-12-21 压接管件装置

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
IT102020000031820 2020-12-22
IT202000031820 2020-12-22

Publications (1)

Publication Number Publication Date
WO2022137101A1 true WO2022137101A1 (fr) 2022-06-30

Family

ID=75340036

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/IB2021/062067 WO2022137101A1 (fr) 2020-12-22 2021-12-21 Dispositif de raccordement à la presse

Country Status (3)

Country Link
EP (1) EP4267877A1 (fr)
CN (1) CN116635168A (fr)
WO (1) WO2022137101A1 (fr)

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2250286A (en) * 1937-09-27 1941-07-22 United Metal Hose Company Inc Hose coupling
EP0940620A1 (fr) * 1998-03-02 1999-09-08 Comap Abbeville S.A. Raccord à sertir pour un tuyau en matière synthétique
DE20212772U1 (de) * 2002-08-21 2004-01-08 Franz Viegener Ii Gmbh & Co. Kg Pressverbindung und Stützhülse für eine Pressverbindung
DE10333532A1 (de) * 2002-07-24 2004-03-25 Tokai Rubber Industries, Ltd., Komaki Schlauchverbindungsanordnung
EP1538383A1 (fr) * 2003-12-02 2005-06-08 Comap Raccord à sertir pour tubes multicouches
US20070157443A1 (en) * 2003-05-02 2007-07-12 Baldwin Gardner T Method of attachment for a high pressure reinforced rubber hose coupling
DE202013105869U1 (de) * 2013-12-20 2015-03-24 Dipl.-Ing. H. Schulz Hds Hydraulik Gmbh & Co. Kg Schlauchkupplung für Hydraulik-Schlauchleitungen mit Umfangsdichtung

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2250286A (en) * 1937-09-27 1941-07-22 United Metal Hose Company Inc Hose coupling
EP0940620A1 (fr) * 1998-03-02 1999-09-08 Comap Abbeville S.A. Raccord à sertir pour un tuyau en matière synthétique
DE10333532A1 (de) * 2002-07-24 2004-03-25 Tokai Rubber Industries, Ltd., Komaki Schlauchverbindungsanordnung
DE20212772U1 (de) * 2002-08-21 2004-01-08 Franz Viegener Ii Gmbh & Co. Kg Pressverbindung und Stützhülse für eine Pressverbindung
US20070157443A1 (en) * 2003-05-02 2007-07-12 Baldwin Gardner T Method of attachment for a high pressure reinforced rubber hose coupling
EP1538383A1 (fr) * 2003-12-02 2005-06-08 Comap Raccord à sertir pour tubes multicouches
DE202013105869U1 (de) * 2013-12-20 2015-03-24 Dipl.-Ing. H. Schulz Hds Hydraulik Gmbh & Co. Kg Schlauchkupplung für Hydraulik-Schlauchleitungen mit Umfangsdichtung

Also Published As

Publication number Publication date
CN116635168A (zh) 2023-08-22
EP4267877A1 (fr) 2023-11-01

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