EP2443375A1 - Assemblage à raccords, embout de raccord et flexible hybride, en particulier pour les applications de climatisation selon r744 - Google Patents

Assemblage à raccords, embout de raccord et flexible hybride, en particulier pour les applications de climatisation selon r744

Info

Publication number
EP2443375A1
EP2443375A1 EP10714576A EP10714576A EP2443375A1 EP 2443375 A1 EP2443375 A1 EP 2443375A1 EP 10714576 A EP10714576 A EP 10714576A EP 10714576 A EP10714576 A EP 10714576A EP 2443375 A1 EP2443375 A1 EP 2443375A1
Authority
EP
European Patent Office
Prior art keywords
connection
line element
hose
conduit
connecting part
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.)
Withdrawn
Application number
EP10714576A
Other languages
German (de)
English (en)
Inventor
Carlo Burkhard
Bernhard Heil
Carsten Ilg
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Witzenmann GmbH
Original Assignee
Witzenmann 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 Witzenmann GmbH filed Critical Witzenmann GmbH
Publication of EP2443375A1 publication Critical patent/EP2443375A1/fr
Withdrawn legal-status Critical Current

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
    • F16L33/26—Arrangements for connecting hoses to rigid members; Rigid hose connectors, i.e. single members engaging both hoses specially adapted for hoses of metal
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D26/00—Shaping without cutting otherwise than using rigid devices or tools or yieldable or resilient pads, i.e. applying fluid pressure or magnetic forces
    • B21D26/14—Shaping without cutting otherwise than using rigid devices or tools or yieldable or resilient pads, i.e. applying fluid pressure or magnetic forces applying magnetic forces
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D39/00—Application of procedures in order to connect objects or parts, e.g. coating with sheet metal otherwise than by plating; Tube expanders
    • B21D39/04—Application of procedures in order to connect objects or parts, e.g. coating with sheet metal otherwise than by plating; Tube expanders of tubes with tubes; of tubes with rods
    • B21D39/046—Connecting tubes to tube-like fittings
    • 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
    • F16L13/14—Non-disconnectible pipe-joints, e.g. soldered, adhesive or caulked joints made by plastically deforming the material of the pipe, e.g. by flanging, rolling
    • F16L13/141—Non-disconnectible pipe-joints, e.g. soldered, adhesive or caulked joints made by plastically deforming the material of the pipe, e.g. by flanging, rolling by crimping or rolling from the outside
    • 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
    • F16L25/0036—Joints for corrugated pipes
    • 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

Definitions

  • the present invention relates to a connection connection of a first conduit element made of a metallic material with a second conduit element made of a metallic material and / or with a sheath for the second conduit element, in particular for R744 air conditioning hoses, according to the O-berbegriff of patent claim 1.
  • connection part for a hose in particular R744 air conditioning hose, which is designed as a pipe element.
  • the present invention relates to a hybrid tube, especially for R744 climate applications.
  • hoses for building equipment or refrigerant hoses for R744 for example, from the house of the present applicant, regularly comprise a connector made of stainless steel and connected to said connector metal hose (corrugated hose, helical hose or bellows). To limit the elongation of the metal hose, it is surrounded by a metal body, in particular likewise made of stainless steel. In order to achieve an optimum friction pairing between the metal braid and the metal hose, a silicone layer is regularly provided between said elements. The connection of the connection part and the metal hose is made by welding.
  • the conventionally used metal braid has a relatively low degree of coverage with respect to the metal hose, which would result in a relatively low bursting pressure. Therefore, in the previously known hoses, the wall thickness of the metal hose is increased, which indeed improves the bursting pressure, but leads to a lower mobility and thus to a shorter service life under deformation.
  • the stainless steel braid used so far is relatively expensive and has a relatively high tendency to corrosion due to the residual lubricant in the production, which leads to an increased risk of failure over the life of the hose.
  • a tensile strength loss of about 20% occurs when the temperature is raised from room temperature up to 180 ° C.
  • connection connection of the type mentioned above, a connection part, in particular for a R744- climatic hose or hoses in the field of building technology, as well as a hybrid hose, in particular for the applications mentioned, that at lower production costs extended life is achieved.
  • connection connection with the features of claim 1, by a connecting part with the features of claim 12 and by a hybrid hose with the features of patent claim 15th
  • a connection connection of a first conduit element made of a metallic material with at least one second conduit element made of a metallic material and / or with a sheath for the second conduit element in particular for R744 air conditioning hoses or for hoses in the field of building services / building equipment, characterized in that the first line element and the second line element and / or the first line element and the envelope are connected to one another in a connection region by means of magnet forming.
  • connection part according to the invention in particular for a R744 air conditioning hose or for hoses in the field of building technology / building equipment, which is designed as a pipe element, is characterized in that the connection part has at least one feature on at least one of its ends which is characteristic of the above said first conduit member, namely: it is formed in steel, preferably stainless steel; or it has an outer form-fitting structure in the connection area; or it has at least one circumferential groove in the connection area, in which preferably an O-ring for sealing the connection is received; or it is designed as a corrugated hose at least partially cross-tube or sleeve member made of a magnetumformbaren material and connectable by magnet forming with the annular corrugated hose.
  • a hybrid hose according to the invention in particular for R744 air conditioning applications or for hoses in the field of building technology / building equipment, is characterized by:
  • At least one connecting part according to the invention as the first conducting element as the first conducting element
  • At least one metal corrugated hose as a second line element
  • connection part and the corrugated hose.
  • the use according to the invention of magnet forming allows the wrapping of the second power element, which is preferably designed as a corrugated tube, to be formed in a non-metallic braiding, since in the context of the present invention this does not have to be welded to the remaining tube arrangement.
  • a non-metallic braid by mechanical pressing on a hose assembly, but this leads to the partial separation of the braid into individual threads and therefore is not feasible in practice.
  • various textile materials can now be used as a braided sheath for the second conduit element, in particular aramid (Kevlar), carbon or other suitable textiles. In this way, any desired color configurations of the hybrid hose according to the invention can be realized at a reasonable expense, which may be advantageous for reasons of safety but also for reasons of aesthetics.
  • aramid has substantially constant material properties over a temperature range of -40 0 C to +180 0 C, while an E delstahlgeflecht already in the range between room temperature and 180 0 C about 20% of the tensile strength loses.
  • the enclosure in addition to a radially inner non-metallic braid has a radially outer metal braid.
  • the inner, textile braid serves to reduce friction between the metal braid and the second conduit element, which is preferably designed as an annular corrugated hose or the like.
  • connection connection according to the invention, the first line element and the second line element and / or the first line element and the envelope are connected by means of a radially outer sleeve of a magnetoformable material.
  • the first line element in the connection region has an outer form-fitting structure, which in particular serves for braiding.
  • the first conduit element in the connection region may also have at least one circumferential groove in which an O-ring for sealing the connection is preferably accommodated.
  • an O-ring By providing an O-ring, particularly high tightness can be achieved.
  • special O-ring compositions can be used as protection against aggressive media.
  • the terminal connection according to the invention is equally suitable for connecting a corrugated hose to a hose connection part, preferably made of stainless steel, as well as for direct connection by magnetic deformation of a first conduit member, for example made of stainless steel, with a second conduit element in the form of a pipe element made of aluminum, copper, brass or the like, the present invention is not limited to the aforementioned materials or material combinations. As the expert knows, for example, relatively poorly conductive metallic materials can be connected to each other by magnet forming, if in this context a so-called driver is used from a relatively electrically conductive material.
  • connection connection provides that each of the two joining partners (line elements) consists of one of the following metals: steel / stainless steel, aluminum, copper, brass or bronze.
  • connection connection connection is designed as an annular corrugated hose.
  • the connection connection can then be realized in such a way that the first conduit element at least partially overlaps the corrugated tube in the manner of a tube or sleeve element, is formed from a magnetformable material and is connected to the corrugated tube by magnetic deformation.
  • an intermediate layer made of a sealing medium can be arranged between the annular corrugated tube and the crude tube sleeve element.
  • the sealing medium may be, for example, a film or an adhesive.
  • the adhesive preferably cures under pressure, so that is achieved by the compression of corrugated hose and tube or sleeve element in the course of magnet forming.
  • connection part according to the invention provides - as stated - that this has an outer form-fitting structure.
  • This can serve on the one hand for braiding.
  • the te form-fitting structure also be provided to connect the first line element directly permanently with a second conduit element, for example, the above-mentioned aluminum, copper or brass tube, by magnet forming.
  • the aforementioned form-fitting structure can have a number of circumferential webs, preferably of triangular or tooth-shaped cross-section.
  • knurls may be provided in the region of the form-fitting structure, which knurls are preferably arranged between adjacent circumferential webs of the form-fitting structure in order to increase the torsional strength.
  • connection part To seal off the connection, another development of the connection part according to the invention provides that, starting from one end of the connection part, first the circumferential groove already mentioned above and then the remaining positive locking structure with the circumferential webs and / or knurls are arranged.
  • the (pipe) line elements used in the context of the present invention do not have to be round, but due to the magnetic conversion methods used can have virtually any cross-sections, for example oval or polygonal cross sections.
  • connection or connecting sleeves is not made of stainless steel but of a (highly) conductive material, such as aluminum, copper, brass or the like, forms the manufacturing cost of the present connection connection or the present Hybridschiauches.
  • the wall thickness of the second conduit element or of the annular corrugated hose can be reduced, which leads to increased flexibility and improved service life of the overall arrangement.
  • the proposed textile fibers with the same strength on a smaller wall thickness than metal mesh. Due to the correspondingly reduced outside diameter of the overall arrangement, this leads to increased flexibility and further improved service life.
  • the braid used can be combined with other materials, such as PVC or the like, in order to make the connection connection according to the invention or the hybrid tube according to the invention also available for other purposes of use.
  • the present invention is by no means limited to the use of the exemplified metallic materials and material combinations.
  • the magnetic deformation can be carried out basically with any metallic materials.
  • connection of the invention can be used both when connecting two (smooth cylindrical) pipe elements as well as when connecting a metalwellwellschlauchs with a (smooth cylindrical) pipe element. Furthermore, it allows in a novel way, the integration of a non-metallic braid, especially in the production of a composite hose with a (smooth cylindrical) connector and a metallic corrugated hose.
  • connection part according to the invention is used, in particular when producing a connection according to the invention between two (smooth-cylindrical) pipeline elements. This makes it possible to realize a particularly good tensile and torsional strength of the connection.
  • connection part according to the invention leads to the hybrid hose according to the invention, which is particularly suitable for R744 climate applications.
  • FIG. 1 shows a first embodiment of the connection according to the invention or of the hybrid hose according to the invention
  • FIG. 2a shows a second embodiment of the connection according to the invention
  • FIG. 2b shows a detailed detail from FIG. 2a
  • FIG. 3 shows a third embodiment of the connection according to the invention
  • FIG. 4 shows an embodiment of the connection part according to the invention
  • FIG. 5a shows a fourth embodiment of the connection according to the invention using the connection part from FIG. 4;
  • FIG. 5b shows a detailed detail from FIG. 5a.
  • FIG. 1 shows a first embodiment of the connection connection according to the invention or of the hybrid tube according to the invention for R744 climate applications, wherein the connection connection is designated in the present case by the reference numeral 1, while the reference symbol 2 is used for the hybrid tube as a whole.
  • connection connection 1 or the hybrid hose 2 comprises a first line element 3, which is designed in the manner of a pipe element in a first metallic material, preferably stainless steel.
  • first pipe element 3 is alternatively also referred to as a connection part, since it regularly serves for connecting or connecting the hybrid hose 2 to or to further pipe elements (on the left in FIG.
  • second conduit element 4 made of a metallic material, which is embodied here as an annular corrugated tube or bellows.
  • the corrugated tube 4 has a series of wave crests 4a and troughs 4b and further has a substantially flat terminal board 4c, whose end portion 4d is angled radially outward.
  • the first line element has on its outer side in the region of the connection connection 1 on a form-fitting structure 3a, which in the present case comprises two axially successively arranged circumferential recesses 3b, 3c.
  • the recesses 3b, 3c are approximately trapezoidal in cross section.
  • the first conduit element 3 has a conical taper 3d, which interacts with the said board 4c of the annular corrugated tube 4 in a surface-sealing manner. Accordingly, points the corrugated tube 4 in this area a cone-shaped extension.
  • the annular corrugated tube 4 and the first conduit element 3 can be welded, glued or otherwise fixed to one another in the stated region 4c, 3d.
  • the corrugated hose 4 is preferably surrounded on its outer side over its entire length by a non-metallic braid 5, which is preferably formed in a textile material, such as aramid, carbon or the like.
  • the braid 5 is fixed by means of a sleeve 6 on the first line element 3.
  • the sleeve 6 was reshaped by means of a magnetic forming process or a magnetic pulse transformation in such a way that it partially engages in the recesses or depressions 3b, 3c of the first conduit element 3 in a form-fitting manner, so that the braid 5 is held non-positively in the engagement region.
  • the braid 5 is supported at reference numeral 4b and then continues to rest against the corrugated hose 4 in the region of the wave peaks 4a.
  • the mesh 5 forms an envelope of the annular corrugated tube 4 and serves for the axial length limitation.
  • the textile material preferably used in the context of the present invention is significantly lighter than conventionally used metal mesh (up to 90% weight saving) and thereby significantly more stable, in particular corrosion-resistant, also with regard to an impairment of the metal tube.
  • the first conduit member 3 or connecting part is - as stated - preferably in steel, most preferably in stainless steel formed.
  • the sleeve 6 is preferably made of a metallic material which is suitable for the magnet forming, that is, an at least relatively good electrical conductor, such as aluminum, copper, brass or the like.
  • the embodiment shown is not limited to such a choice of materials, since the person skilled in the art knows that other materials can also be transformed by means of magnet forming if, in addition, a so-called driver made of an electrically highly conductive material is used.
  • the driver can be used as solid material, for. B. in the form of a sleeve, be formed. Alternatively, a design as a coating or plating of the material to be formed is possible.
  • FIG. 2a shows a further embodiment of the connection connection 1 according to the invention
  • FIG. 2b shows a detail D1 from FIG. 2a.
  • connection connection 1 comprises a corrugated hose or bellows 4 as well as a pipe element or connection part 3.
  • connection part 3 acts as a first line element
  • corrugated hose 4 functions as a second line element.
  • the corrugated hose 4 has at 4c a terminal, smooth cylindrical portion which serves for connection to the connector part 3, which is also formed as a smooth cylindrical pipe element.
  • the connecting part 3 has on its outer side in the overlapping region with the smooth cylindrical section 4c of the annular corrugated hose on a circumferential groove 3e, in which a sealing means in the form of an O-ring 7 is inserted.
  • a sleeve member 6 Radially outside of the connecting part 3 and the annular corrugated hose 4 is in the region of the circumferential groove 3e and the O-ring 7 in turn a sleeve member 6 is arranged, which was formed by magnetic deformation of the connecting part 3 and the annular corrugated hose 4 or pressed to the connecting part and to connect the annular corrugated hose 4 together.
  • the second conduit element 4 is designed as a corrugated hose or bellows.
  • Reference numeral 3 again denotes the first line element, which is designed in the manner of a pipe element and is connected in its bellows 4 facing end portion by magnet forming with the bellows 4.
  • an intermediate layer 8 is provided in the connecting or forming region between the bellows 4 and the radially outer first conduit element 3, which consists of a sealing medium, preferably a film or an adhesive.
  • this adhesive can be a pressure-curing adhesive, which thus hardens upon magnet forming of the outer conduit member 3 for connection to the bellows 4 and thus ensures optimum connection of the two conduit members 3, 4.
  • FIG. 4 shows an embodiment according to the invention of the connection part 3, which in the context of the present description has repeatedly been referred to alternatively as the first line element.
  • the connection part 3 shown in FIG. 4 serves with its one end 3f for connection to a (connecting) pipeline not shown in FIG. 4 and with its other end 3g for connection to a second conduit element, for example the annular corrugated hose 4 according to FIGS , 2a, 2b and 3 (also not shown in FIG. 4).
  • the connection part 3 has a positive-locking structure 3a already described above in another context. According to FIG.
  • this comprises three equidistantly arranged circumferential webs 3h, which are of tooth-shaped or triangular cross-section, as will be seen more clearly below, in particular on the attached FIG. 5b.
  • a knurl structure 3i is arranged in the form of a multiplicity of longitudinally oriented elongated elevations.
  • the connection part 3 has the circumferential groove, already explained above with reference to FIGS. 2a and 2b, for receiving an O-ring seal (not shown in FIG. 4).
  • the end 3f and the end 3g of the connection part 3 are delimited from one another by a radial thickening 3j.
  • FIG. 5a and the detailed detail D2 in FIG. 5b show the use of the connection part 3 according to FIG. 4 for creating a further connection connection 1 according to the invention between the connection part 3 as the first conduction element and a second conduction element 4 ', which in the present case is not a corrugated hose or bladder but a smoothly cylindrical one Tubular element is formed.
  • the second line element 4 ' is pushed with one end onto the end 3f of the connection part 3 and fixed there by magnetic deformation.
  • the second line element 4 ' covers the connection part 3 in the region of the circumferential groove 3e (with inserted O-ring 7) and the interlocking structure 3a, that is, the knurl structure 3i and the circumferential webs 3h (see FIG. 4), whereby it is up against the thickening 3j of the connection part 3 extends.
  • a hybrid hose 2 according to FIG. 1 suitable in particular for R744 climate applications can be connected in a particularly simple and cost-effective manner to a connecting line (reference numeral 4 'in FIG. 5a), wherein, for example, the connection part 3 made of stainless steel and the said connecting line 4' are made of another metallic material, such as aluminum or the like, may exist without any difficulty in connection occur.
  • a connecting line reference numeral 4 'in FIG. 5a

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Rigid Pipes And Flexible Pipes (AREA)

Abstract

La présente invention concerne un assemblage à raccords (1) entre, d'une part un premier élément de conduit (3) en matière métallique, et d'autre part au moins un second élément de conduit (4, 4') en matière métallique et/ou un gainage (5) destiné au second élément de conduit (4, 4'), convenant en particulier à des flexibles de climatisation selon R744 ou à des applications du domaine de la technique des bâtiments. Cet assemblage à raccords (1) se distingue en ce que le premier élément de conduit (3) et le second élément de conduit (4, 4'), et/ou le premier élément de conduit (3) et le gainage (5) s'assemblent l'un à l'autre dans la zone de raccordement par déformation plastique magnétique.
EP10714576A 2009-06-16 2010-03-31 Assemblage à raccords, embout de raccord et flexible hybride, en particulier pour les applications de climatisation selon r744 Withdrawn EP2443375A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE200910024975 DE102009024975A1 (de) 2009-06-16 2009-06-16 Anschlussverbindung, Anschlussteil und Hybridschlauch, insbesondere für R744-Klimaanwendungen
PCT/EP2010/002037 WO2010145725A1 (fr) 2009-06-16 2010-03-31 Assemblage à raccords, embout de raccord et flexible hybride, en particulier pour les applications de climatisation selon r744

Publications (1)

Publication Number Publication Date
EP2443375A1 true EP2443375A1 (fr) 2012-04-25

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Family Applications (1)

Application Number Title Priority Date Filing Date
EP10714576A Withdrawn EP2443375A1 (fr) 2009-06-16 2010-03-31 Assemblage à raccords, embout de raccord et flexible hybride, en particulier pour les applications de climatisation selon r744

Country Status (3)

Country Link
EP (1) EP2443375A1 (fr)
DE (1) DE102009024975A1 (fr)
WO (1) WO2010145725A1 (fr)

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