US20100052317A1 - Integral pipe and fitting assembly of polymer material, and method of making same - Google Patents

Integral pipe and fitting assembly of polymer material, and method of making same Download PDF

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Publication number
US20100052317A1
US20100052317A1 US12/305,202 US30520207A US2010052317A1 US 20100052317 A1 US20100052317 A1 US 20100052317A1 US 30520207 A US30520207 A US 30520207A US 2010052317 A1 US2010052317 A1 US 2010052317A1
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US
United States
Prior art keywords
hose
assembly
polymer material
end portion
fitting
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.)
Abandoned
Application number
US12/305,202
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English (en)
Inventor
Rinaldo Mezzalira
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Fitt SpA
Original Assignee
Fitt SpA
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Filing date
Publication date
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Application filed by Fitt SpA filed Critical Fitt SpA
Publication of US20100052317A1 publication Critical patent/US20100052317A1/en
Abandoned legal-status Critical Current

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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
    • F16L11/00—Hoses, i.e. flexible pipes
    • 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
    • B29C57/00—Shaping of tube ends, e.g. flanging, belling or closing; Apparatus therefor, e.g. collapsible mandrels
    • 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
    • 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
    • B29C66/116—Single bevelled joints, i.e. one of the parts to be joined being bevelled in the joint area
    • B29C66/1162—Single bevel to bevel joints, e.g. mitre 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
    • B29C66/12—Joint cross-sections combining only two joint-segments; Tongue and groove joints; Tenon and mortise joints; Stepped joint cross-sections
    • B29C66/122—Joint 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
    • B29C66/1222—Joint 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
    • 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
    • B29C66/12—Joint cross-sections combining only two joint-segments; Tongue and groove joints; Tenon and mortise joints; Stepped joint cross-sections
    • B29C66/122—Joint 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
    • B29C66/1224—Joint 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
    • 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
    • B29C66/12—Joint cross-sections combining only two joint-segments; Tongue and groove joints; Tenon and mortise joints; Stepped joint cross-sections
    • B29C66/124—Tongue and groove joints
    • B29C66/1244—Tongue and groove joints characterised by the male part, i.e. the part comprising the tongue
    • B29C66/12441—Tongue and groove joints characterised by the male part, i.e. the part comprising the tongue being a single wall
    • 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
    • B29C66/12—Joint cross-sections combining only two joint-segments; Tongue and groove joints; Tenon and mortise joints; Stepped joint cross-sections
    • B29C66/124—Tongue and groove joints
    • B29C66/1246—Tongue and groove joints characterised by the female part, i.e. the part comprising the groove
    • B29C66/12463—Tongue and groove joints characterised by the female part, i.e. the part comprising the groove being tapered
    • 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
    • B29C66/12—Joint cross-sections combining only two joint-segments; Tongue and groove joints; Tenon and mortise joints; Stepped joint cross-sections
    • B29C66/124—Tongue and groove joints
    • B29C66/1246—Tongue and groove joints characterised by the female part, i.e. the part comprising the groove
    • B29C66/12469—Tongue and groove joints characterised by the female part, i.e. the part comprising the groove being asymmetric
    • 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
    • B29C66/12—Joint cross-sections combining only two joint-segments; Tongue and groove joints; Tenon and mortise joints; Stepped joint cross-sections
    • B29C66/128—Stepped joint cross-sections
    • B29C66/1282—Stepped joint cross-sections comprising at least one overlap joint-segment
    • 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
    • B29C66/12—Joint cross-sections combining only two joint-segments; Tongue and groove joints; Tenon and mortise joints; Stepped joint cross-sections
    • B29C66/128—Stepped joint cross-sections
    • B29C66/1282—Stepped joint cross-sections comprising at least one overlap joint-segment
    • B29C66/12821—Stepped joint cross-sections comprising at least one overlap joint-segment comprising at least two overlap joint-segments
    • 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
    • B29C66/12—Joint cross-sections combining only two joint-segments; Tongue and groove joints; Tenon and mortise joints; Stepped joint cross-sections
    • B29C66/128—Stepped joint cross-sections
    • B29C66/1284—Stepped joint cross-sections comprising at least one butt joint-segment
    • B29C66/12841—Stepped joint cross-sections comprising at least one butt joint-segment comprising at least two butt joint-segments
    • 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
    • B29C66/12—Joint cross-sections combining only two joint-segments; Tongue and groove joints; Tenon and mortise joints; Stepped joint cross-sections
    • B29C66/128—Stepped joint cross-sections
    • B29C66/1286—Stepped joint cross-sections comprising at least one bevelled joint-segment
    • 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
    • B29C66/135—Single hemmed joints, i.e. one of the parts to be joined being hemmed 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
    • B29C66/50—General aspects of joining tubular articles; General aspects of joining long products, i.e. bars or profiled elements; General aspects of joining single elements to tubular articles, hollow articles or bars; General aspects of joining several hollow-preforms to form hollow or tubular articles
    • B29C66/51—Joining tubular articles, profiled elements or bars; Joining single elements to tubular articles, hollow articles or bars; Joining several hollow-preforms to form hollow or tubular articles
    • B29C66/53—Joining single elements to tubular articles, hollow articles or bars
    • B29C66/534—Joining single elements to open ends of tubular or hollow articles or to the ends of bars
    • B29C66/5344—Joining single elements to open ends of tubular or hollow articles or to the ends of bars said single elements being substantially annular, i.e. of finite length, e.g. joining flanges to tube ends
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/50—General aspects of joining tubular articles; General aspects of joining long products, i.e. bars or profiled elements; General aspects of joining single elements to tubular articles, hollow articles or bars; General aspects of joining several hollow-preforms to form hollow or tubular articles
    • B29C66/61—Joining from or joining on the inside
    • B29C66/612—Making circumferential 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
    • B29C66/70—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
    • B29C66/72—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 structure of the material of the parts to be joined
    • B29C66/721—Fibre-reinforced materials
    • B29C66/7214—Fibre-reinforced materials characterised by the length of the fibres
    • B29C66/72141—Fibres of continuous length
    • 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
    • B29C66/72—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 structure of the material of the parts to be joined
    • B29C66/723—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 structure of the material of the parts to be joined being multi-layered
    • 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
    • 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
    • F16L33/34—Arrangements for connecting hoses to rigid members; Rigid hose connectors, i.e. single members engaging both hoses with bonding obtained by vulcanisation, gluing, melting, or the like
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L47/00—Connecting arrangements or other fittings specially adapted to be made of plastics or to be used with pipes made of plastics
    • F16L47/02—Welded joints; Adhesive joints
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
    • B29C65/02—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure
    • B29C65/04—Dielectric heating, e.g. high-frequency welding, i.e. radio frequency welding of plastic materials having dielectric properties, e.g. PVC
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
    • B29C65/02—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure
    • B29C65/06—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using friction, e.g. spin welding
    • B29C65/0672—Spin welding
    • 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
    • B29C66/71—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 composition of the plastics material 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
    • B29C66/90—Measuring or controlling the joining process
    • B29C66/92—Measuring or controlling the joining process by measuring or controlling the pressure, the force, the mechanical power or the displacement of the joining tools
    • B29C66/924—Measuring or controlling the joining process by measuring or controlling the pressure, the force, the mechanical power or the displacement of the joining tools by controlling or regulating the pressure, the force, the mechanical power or the displacement of the joining tools
    • B29C66/9241—Measuring or controlling the joining process by measuring or controlling the pressure, the force, the mechanical power or the displacement of the joining tools by controlling or regulating the pressure, the force, the mechanical power or the displacement of the joining tools by controlling or regulating the pressure, the force or the mechanical power
    • B29C66/92431—Measuring or controlling the joining process by measuring or controlling the pressure, the force, the mechanical power or the displacement of the joining tools by controlling or regulating the pressure, the force, the mechanical power or the displacement of the joining tools by controlling or regulating the pressure, the force or the mechanical power the pressure, the force or the mechanical power being kept constant over time
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
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    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/90—Measuring or controlling the joining process
    • B29C66/92—Measuring or controlling the joining process by measuring or controlling the pressure, the force, the mechanical power or the displacement of the joining tools
    • B29C66/929—Measuring or controlling the joining process by measuring or controlling the pressure, the force, the mechanical power or the displacement of the joining tools characterized by specific pressure, force, mechanical power or displacement values or ranges
    • 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
    • B29C66/90—Measuring or controlling the joining process
    • B29C66/93—Measuring or controlling the joining process by measuring or controlling the speed
    • B29C66/934—Measuring or controlling the joining process by measuring or controlling the speed by controlling or regulating the speed
    • B29C66/93451—Measuring or controlling the joining process by measuring or controlling the speed by controlling or regulating the speed by controlling or regulating the rotational speed, i.e. the speed of revolution
    • 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
    • B29C66/90—Measuring or controlling the joining process
    • B29C66/93—Measuring or controlling the joining process by measuring or controlling the speed
    • B29C66/939—Measuring or controlling the joining process by measuring or controlling the speed characterised by specific speed values or ranges
    • 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
    • B29C66/90—Measuring or controlling the joining process
    • B29C66/94—Measuring or controlling the joining process by measuring or controlling the time
    • B29C66/949—Measuring or controlling the joining process by measuring or controlling the time characterised by specific time values or ranges
    • 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
    • B29C67/00—Shaping techniques not covered by groups B29C39/00 - B29C65/00, B29C70/00 or B29C73/00
    • B29C67/0014—Shaping techniques not covered by groups B29C39/00 - B29C65/00, B29C70/00 or B29C73/00 for shaping tubes or blown tubular films
    • B29C67/0018—Turning tubes inside out
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
    • B29L2009/00—Layered products

Definitions

  • the present invention finds application in the field of flexible hoses, and particularly relates to an integral hose and fitting assembly of polymer material.
  • the invention further relates to a method of making such hose and fitting assembly.
  • Hose and fitting assemblies are known, specifically in the field of household appliances, industrial applications and gardening, which comprise a flexible hose of a thermoplastic polymer material and a fitting, also made from a polymer material, which is integrally associated thereto.
  • the fitting is designed for connection to an external point of use, such as a tap, for transfer of liquids and various fluids.
  • inner pressure and wear can cause radial expansions and deformations to various extents at the coupling until a “burst”, i.e. mechanical failure thereof occurs.
  • the object of this invention is to overcome the above drawbacks, by providing a hose and fitting assembly that is highly efficient and relatively cost-effective.
  • a particular object is to provide an assembly that provides a good mechanical and/or hydraulic seal between hose and fitting.
  • a further object is to provide a method for making an assembly, which maximizes productivity and minimizes scrap parts.
  • a hose and fitting assembly as defined in claim 1 , which comprises: a hose of a first thermoplastic polymer material having an end portion with an inner surface and an outer surface and a fitting of a second polymer material for connection with an external point of use.
  • the fitting has a central tubular projection with an axial fluid passageway.
  • the central tubular projection has an inner wall which defines the fluid passageway and an outer wall, at least partly integrally coupled to the inner surface of the end portion of the hose.
  • the assembly comprises reinforcement means of a third polymer material at the periphery of the end portion of the hose.
  • the assembly of the invention has an excellent mechanical and/or hydraulic sealing capability.
  • reinforcement means at the periphery of the end portion of the hose restrains radial deformations of the hose and provides improved mechanical and/or hydraulic sealing capability as compared with prior art hose assemblies.
  • the term “at least partly integrally coupled” and derivatives thereof, has the meaning of an either total or partial integral coupling, such integral coupling involving the whole or a part of the longitudinal extension of the surfaces and/or walls and/or faces and/or portions of interest.
  • the invention relates to a method for making such hose and fitting assembly, according to claim 24 , which comprises the steps of: providing a hose of a first thermoplastic polymer material having an end portion with an inner surface and an outer surface; providing a fitting of a second polymer material for connection to an external point of use, said fitting comprising a central tubular projection with an axial fluid passageway, said central tubular projection having an inner wall which defines the fluid passageway and an outer wall designed to be coupled to the inner surface of the end portion of the hose; securing the fitting to the hose by at least partial integral coupling of the outer wall of the tubular projection to the inner surface of the end portion; providing reinforcement means of a third polymer material designed to be placed at the periphery of the end portion of the hose; placing the reinforcement means at the periphery of the end portion of the hose for restraining radial deformations of the hose and ensure integrity of the assembly.
  • FIGS. 1 and 2 are side views of a first embodiment of the assembly of the invention
  • FIGS. 3 and 4 are side views of another embodiment of the assembly of the invention.
  • FIGS. 5 , 6 , 7 and 8 are side views of yet another embodiment of the assembly of the invention.
  • FIGS. 9 , 10 and 11 are side views of a further embodiment of the assembly of the invention.
  • FIG. 12 is a sectional view of one embodiment of the hose forming part of the assembly of the invention.
  • FIG. 13 is a side view of certain details of the hose of FIG. 12 ;
  • FIG. 14 is a side view of another embodiment of the hose forming part of the assembly of the invention.
  • FIG. 15 is a view of the hose of FIG. 14 , fragmented along a XV-XV plane.
  • the hose/fitting assembly of the invention essentially comprises a hose 2 of a first thermoplastic polymer material, integrally coupled to a fitting 3 of a second polymer material, for connection to an external point of use, not shown but well known per se.
  • the fitting 3 comprises a central tubular projection 4 having an inner wall 5 which defines an axial fluid passageway 6 and an outer wall 7 , integrally coupled to the inner surface 8 of an end portion 9 of the pipe 2 .
  • Integral coupling between the outer wall 7 and the inner surface 8 may be obtained by means of various techniques such as, by way of non limiting example, rotational friction welding, radio frequency welding or the like.
  • the hose and fitting assembly 1 may comprise reinforcement means of a third polymer material, generally designated by numeral 11 , located at the periphery of the end portion 9 of the hose 2 for restraining radial deformations of the hose and providing the assembly with a good mechanical and/or hydraulic sealing capability.
  • the first polymer material and/or the second polymer material and/or the third polymer material may be selected from the group comprising PVC, PU, EVA, PE, PP, PBT, PET, PA, PMMA, of either the homopolymer or copolymer type, natural or synthetic rubbers or a combination thereof.
  • the first polymer material of the hose 2 may be compatible with the second polymer material of the fitting 3 and/or the third polymer material of the reinforcement means 11 .
  • compatible materials are meant to indicate two materials that can be integrally coupled while maintaining the properties of their physico-chemical bond unaltered with time.
  • the second polymer material of the fitting 3 and/or the third polymer material of the reinforcement means 11 mat have a higher stiffness than the first polymer material of the hose 2 , to allow coupling therebetween by at least partial melting of the surface layers of the relevant surfaces such as, without limitation, by rotational friction welding.
  • the first polymer material of the hose 2 may be of the same nature as the second polymer material of the fitting 3 and/or as the third polymer material of the reinforcement means 11 , such as PVC.
  • the reinforcement means may be situated in any position at the periphery of the end portion 9 of the hose 2 and may be arranged in any manner without departure from the scope of projection as defined by the annexed claims.
  • the reinforcement means 11 may include an annular member 12 of a third polymer material, having an outer face 13 and an inner face 14 susceptible of being coupled to the outer surface 15 of the end portion 9 of the hose 2 .
  • the third polymer material of the annular member 12 may be stiffer than the first polymer material, and may be of the same nature as the second polymer material of the fitting 3 .
  • the third polymer material may advantageously be substantially as stiff as the second polymer material.
  • the ratio between the length of the tubular projection 4 and the inside diameter D I of the hose 2 may be in a range from about 0.5 to about 8, and preferably of nearly 2 .
  • the ratio between the length L B of the annular member 12 and the inside diameter D I of said hose is in a range from about 1 to about 12, and may preferably be of about 4.
  • the ratio between the length L B of the annular member 12 and the length L A of the tubular projection 4 may be suitably in a range from about 1 to about 4, and may preferably be of about 2.
  • Such sizing arrangement of the tubular projection 4 and/or the annular member 12 provides an improved mechanical and/or hydraulic sealing capability of the assembly.
  • the outer wall 7 of the tubular projection 4 may be inwardly tapered for easier connection with the inner surface 8 of the end portion 9 of the hose 2 .
  • the inner face 14 of the annular member 12 may be outwardly tapered for easier connection with the outer surface 15 of the same end portion 9 .
  • the annular member 12 may be integral with the fitting 3 , i.e. formed of one piece therewith.
  • the annular member 12 may be coaxial with the tubular projection 4 and radially spaced therefrom to define an interspace 16 having a bottom wall 17 and an opening 18 , particularly shown in FIG. 1 , designed to receive the end portion 9 of the hose 2 .
  • the third polymer material is apparently identical to the second polymer material.
  • FIG. 2 The final operating configuration of this embodiment is shown in FIG. 2 , wherein the outer surface 15 of the end portion 9 of the hose 2 is integrally coupled to the inner face 14 of the annular member 12 , whereas the outer wall 7 of the projection 4 is integrally coupled to the inner surface 8 of the end portion 9 of the hose 2 . Furthermore, in this position, the end portion 9 of the hose 2 is integrally coupled to the bottom wall 17 of the interspace 16 , for example at an end area 28 thereof.
  • final operating configuration and derivatives thereof, as used herein, are meant to indicate the configuration of an object during its normal operation.
  • the annular member 12 may be separate from the fitting 3 , and be fitted onto the hose 2 at the end portion 9 .
  • FIG. 4 shows the final operating configuration of this embodiment, in which the outer surface 15 of the end portion 9 of the hose 2 is integrally coupled to the inner face 14 of the annular member 12 , and the outer wall 7 of the projection 4 is integrally coupled to the inner surface 8 of the end portion 9 of the hose 2 . Furthermore, the annular member 12 interacts with the fitting 3 by a radial projection 19 which abuts, in operation, against the area 20 of the fitting 3 at the periphery of the central tubular projection 4 .
  • the reinforcement means 11 may also include an expanded area 21 of the end portion 9 of the hose 2 , which may have a thickness s 1 greater than the thickness s 2 of the hose 2 .
  • FIGS. 9 , 10 and 11 show by way of example and without limitation, an embodiment of the invention in which the reinforcement means 11 may include, besides the annular member 12 , the expanded area 21 formed by enlargement of the end portion 9 of the hose 2 .
  • both the annular member and the expanded area 21 act in synergy to restrain radial deformations of the hose and to provide the assembly with a good mechanical and/or hydraulic sealing capability.
  • FIG. 11 shows the final operating configuration of this embodiment, in which the outer surface 15 of the end portion 9 of the hose 2 is integrally coupled to the inner face 14 of the annular member 12 , whereas the outer wall 7 of the projection 4 is integrally coupled to the inner surface 8 of the end portion 9 of the hose 2 . Furthermore, in this position, the end portion 9 of the hose 2 may be integrally coupled to the area 20 of the fitting 3 at the periphery of the tubular projection 4 by its end area 28 .
  • the annular member 12 may further be integrally coupled to the area 20 a head portion 23 thereof.
  • FIGS. 5 , 6 , 7 and 8 show another embodiment of the invention, wherein the expanded area 21 may be defined by two adjacent overlapping hose sections 22 , 22 ′.
  • the reinforcement means 11 may include both the expanded area 21 formed by the overlapped sections 22 , 22 ′ and the annular member 12 at the periphery of the outer surface 15 of the end portion 9 of the hose 2 .
  • both the expanded area 21 formed by the overlapped sections 22 , 22 ′ and the annular member 12 act in synergy to restrain radial deformations of the hose and to provide the assembly with a good mechanical and/or hydraulic sealing capability.
  • the expanded area 21 may be defined either entirely or partially by two or more overlapped hose sections, and that such overlapping area may cover such sections either entirely or partially, without departure from the scope of protection as defined by the annexed claims.
  • FIG. 5 shows an intermediate step of the overlapping process for forming the expanded area 21 , in which the section 22 ′ of the end portion 9 of the hose 2 is outwardly folded onto the section 22 , in the direction of arrows F 1 , F 1 ′.
  • the end portion 9 may be heated, e.g. in a hot water bath.
  • FIG. 8 shows the final operating configuration of this embodiment, in which the outer surface 15 of the end portion 9 of the hose 2 may be integrally coupled to the inner face 14 of the annular member 12 , whereas the outer wall 7 of the projection 4 is integrally coupled to the inner surface 8 of the end portion 9 of the hose 2 . Furthermore, in this position, the end portion 9 of the hose 2 may be integrally coupled to the area 20 of the fitting 3 at the periphery of the tubular projection 4 by its end area 28 .
  • the annular member 12 may further be integrally coupled to the area 20 by an end portion 23 thereof.
  • the reinforcement means 11 may further include a fibrous reinforcement layer 24 in the hose 2 between an outer protective layer 25 and an inner layer 26 designed to contact the fluid to be carried.
  • the reinforcement layer 24 may be made from natural or synthetic fibers, whereas the outer layer 25 and the inner layer 26 may be made from the first polymer material, such as PVC.
  • the fibrous reinforcement layer 24 may have a braided, spiral wrapped, knitted, taped or mesh form with simple or double chain stitches, and be formed in accordance with the teachings of patents EP-B1-0623776 or EP-B1-0960297, by the same Applicant.
  • the chain-mesh fibrous layer 24 may have substantially parallel lines of stitches 27 and substantially parallel rows of stitches 29 , as shown in FIG. 13 .
  • the lines 27 and the rows 29 of stitches may be mutually inclined with respect to the longitudinal axis Y of the hose 2 , at respective predetermined angles ⁇ , ⁇ .
  • these angles ⁇ , ⁇ may be substantially equal.
  • the fibrous reinforcement layer 24 will provide a synergic effect on the other reinforcement means 11 to restrain radial deformations of the hose 2 and to provide the assembly with a good mechanical and/or hydraulic sealing capability. Particularly, as shown in FIGS. 1 to 13 , it can act synergistically with the annular member 12 , whether the latter is integral with the fitting 3 or not, as particularly shown in the final operating configurations of FIG. 2 and FIG. 4 , and also with the expanded area 21 , as shown in the final operating configurations of FIG. 8 and FIG. 11 .
  • the hose forming part of the assembly according to the invention may be of the well-known “braided” type, i.e. having two overlapped rows of fibrous material.
  • the two rows 30 , 30 ′ are wound in opposite directions to form a network, as shown in FIG. 14 .
  • a method of making a hose and fitting assembly 1 will include the following steps.
  • the first steps consist in providing the hose 2 , the fitting 3 and the reinforcement means 11 .
  • provision and derivatives thereof, have the meaning of preparation of a relevant component for a relevant process step, thereby including any preventive treatment designed for optimal performance of such relevant step, such as, without limitation, collection from a storage site, forming the component or any thermal and/or chemical and/or physical pre-treatments or the like.
  • the steps may even not follow the above sequence, without departure from the scope of protection as defined in the annexed claims.
  • the step of fixing the fitting 3 to the hose 2 may precede the step of providing the reinforcement means 11 .
  • the relative rotation speed and the compressive force exerted on the end portion 9 of the hose 2 and the fitting 3 may be set to allow the contact area to melt in 3 to 10 seconds, preferably in about 5 seconds.
  • the rotation speed may be of 50 to 3000 rpm and preferably of about 1000 rpm, whereas the compressive force between the portion 9 and the fitting 3 may be substantially constant and in a range from 3 N to 300 N, preferably of about 30 N.
  • the hose/fitting assembly of the invention fulfills the intended objects and particularly to provide an assembly that exhibits a good mechanical and/or hydraulic sealing capability between hose and fitting.
  • the provision of the reinforcement means 11 of polymer material at the periphery of the end portion 9 of the hose 2 restrains radial deformations of the hose and provides a good mechanical and/or hydraulic sealing capability of the assembly.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Rigid Pipes And Flexible Pipes (AREA)
  • Branch Pipes, Bends, And The Like (AREA)
US12/305,202 2006-07-07 2007-04-18 Integral pipe and fitting assembly of polymer material, and method of making same Abandoned US20100052317A1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
IT000213A ITVI20060213A1 (it) 2006-07-07 2006-07-07 Assieme tubo/raccordo integrale in materiale polimerico, nonche' metodo di realizzazione dello stesso
ITVI2006A000213 2006-07-07
PCT/IB2007/051398 WO2008007230A2 (en) 2006-07-07 2007-04-18 Integral pipe and fitting assembly of polymer material, and method of makng same

Related Parent Applications (1)

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PCT/IB2007/051398 A-371-Of-International WO2008007230A2 (en) 2006-07-07 2007-04-18 Integral pipe and fitting assembly of polymer material, and method of makng same

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US13/736,560 Active 2027-06-26 US9249905B2 (en) 2006-07-07 2013-01-08 Integral pipe and fitting assembly of polymer material, and method of making same

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EP (1) EP2047169B2 (de)
JP (1) JP2009543005A (de)
CN (1) CN101490459A (de)
AT (1) ATE512331T1 (de)
AU (1) AU2007273941B2 (de)
CA (1) CA2655742C (de)
ES (1) ES2366746T5 (de)
IT (1) ITVI20060213A1 (de)
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ITVI20060213A1 (it) 2008-01-08
AU2007273941B2 (en) 2011-06-09
EP2047169B1 (de) 2011-06-08
US20130118629A1 (en) 2013-05-16
PL2047169T3 (pl) 2011-12-30
US9249905B2 (en) 2016-02-02
ES2366746T3 (es) 2011-10-25
ATE512331T1 (de) 2011-06-15
RU2426027C2 (ru) 2011-08-10
CA2655742C (en) 2014-06-03
RU2009104070A (ru) 2010-08-20
CN101490459A (zh) 2009-07-22
CA2655742A1 (en) 2008-01-17
EP2047169B2 (de) 2014-03-19
ES2366746T5 (es) 2014-07-07
PL2047169T5 (pl) 2015-05-29
WO2008007230A3 (en) 2008-12-04
PT2047169E (pt) 2011-08-04
WO2008007230A2 (en) 2008-01-17
JP2009543005A (ja) 2009-12-03
AU2007273941A1 (en) 2008-01-17
EP2047169A2 (de) 2009-04-15

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