ATE170272T1 - Verfahren zum herstellen von rohrverbindungen und werkzeug zum ausführen dieses verfahrens - Google Patents

Verfahren zum herstellen von rohrverbindungen und werkzeug zum ausführen dieses verfahrens

Info

Publication number
ATE170272T1
ATE170272T1 AT94907025T AT94907025T ATE170272T1 AT E170272 T1 ATE170272 T1 AT E170272T1 AT 94907025 T AT94907025 T AT 94907025T AT 94907025 T AT94907025 T AT 94907025T AT E170272 T1 ATE170272 T1 AT E170272T1
Authority
AT
Austria
Prior art keywords
pipe
expanded
connector sleeve
edges
inner diameter
Prior art date
Application number
AT94907025T
Other languages
English (en)
Inventor
Yngve Lundequist
Bengt Soerberg
Mikael Wild
Original Assignee
Wirsbo Bruks Ab
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 Wirsbo Bruks Ab filed Critical Wirsbo Bruks Ab
Application granted granted Critical
Publication of ATE170272T1 publication Critical patent/ATE170272T1/de

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
    • B29C65/66—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by liberation of internal stresses, e.g. shrinking of one of the parts to be joined
    • 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
    • B21D39/08—Tube expanders
    • B21D39/20—Tube expanders with mandrels, e.g. expandable
    • 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
    • B21D41/00—Application of procedures in order to alter the diameter of tube ends
    • B21D41/02—Enlarging
    • B21D41/026—Enlarging by means of 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
    • B29C55/00—Shaping by stretching, e.g. drawing through a die; Apparatus therefor
    • B29C55/22—Shaping by stretching, e.g. drawing through a die; Apparatus therefor of tubes
    • B29C55/24—Shaping by stretching, e.g. drawing through a die; Apparatus therefor of tubes radial
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/01—General aspects dealing with the joint area or with the area to be joined
    • B29C66/05—Particular design of joint configurations
    • B29C66/10—Particular design of joint configurations particular design of the joint cross-sections
    • B29C66/11—Joint cross-sections comprising a single joint-segment, i.e. one of the parts to be joined comprising a single joint-segment in the joint cross-section
    • B29C66/112—Single lapped joints
    • B29C66/1122—Single lap to lap joints, i.e. overlap 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
    • B29C66/50—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
    • B29C66/52—Joining tubular articles, bars or profiled elements
    • B29C66/522—Joining tubular articles
    • B29C66/5224—Joining tubular articles for forming fork-shaped connections, e.g. for making Y-shaped pieces
    • B29C66/52241—Joining tubular articles for forming fork-shaped connections, e.g. for making Y-shaped pieces with two right angles, e.g. for making T-shaped pieces
    • 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
    • B29C66/52—Joining tubular articles, bars or profiled elements
    • B29C66/522—Joining tubular articles
    • B29C66/5229—Joining tubular articles involving the use of a socket
    • B29C66/52291—Joining tubular articles involving the use of a socket said socket comprising a stop
    • B29C66/52293—Joining tubular articles involving the use of a socket said socket comprising a stop said stop being external
    • 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
    • B29C66/52—Joining tubular articles, bars or profiled elements
    • B29C66/522—Joining tubular articles
    • B29C66/5229—Joining tubular articles involving the use of a socket
    • B29C66/52297—Joining tubular articles involving the use of a socket said socket comprising slip-off prevention means
    • 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
    • F16L33/213—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 expanded inside 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
    • F16L47/00—Connecting arrangements or other fittings specially adapted to be made of plastics or to be used with pipes made of plastics
    • F16L47/20—Connecting arrangements or other fittings specially adapted to be made of plastics or to be used with pipes made of plastics based principally on specific properties of plastics
    • F16L47/22—Connecting arrangements or other fittings specially adapted to be made of plastics or to be used with pipes made of plastics based principally on specific properties of plastics using shrink-down material
    • 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
    • B29C66/737—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 state of the material of the parts to be joined
    • B29C66/7371—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 state of the material of the parts to be joined oriented or heat-shrinkable
    • B29C66/73715—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 state of the material of the parts to be joined oriented or heat-shrinkable heat-shrinkable

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Shaping Of Tube Ends By Bending Or Straightening (AREA)
  • Non-Disconnectible Joints And Screw-Threaded Joints (AREA)
  • Mutual Connection Of Rods And Tubes (AREA)
  • Quick-Acting Or Multi-Walled Pipe Joints (AREA)
  • Finish Polishing, Edge Sharpening, And Grinding By Specific Grinding Devices (AREA)
  • Joints That Cut Off Fluids, And Hose Joints (AREA)
  • Mechanical Coupling Of Light Guides (AREA)
  • Reinforcement Elements For Buildings (AREA)
  • Joints With Sleeves (AREA)
  • Lining Or Joining Of Plastics Or The Like (AREA)
AT94907025T 1993-02-05 1994-01-27 Verfahren zum herstellen von rohrverbindungen und werkzeug zum ausführen dieses verfahrens ATE170272T1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SE9300365A SE9300365L (sv) 1993-02-05 1993-02-05 Förfarande för upprättande av en rörförbindning samt för användning vid förfarandet lämpat rörförbindningsstycke

Publications (1)

Publication Number Publication Date
ATE170272T1 true ATE170272T1 (de) 1998-09-15

Family

ID=20388784

Family Applications (1)

Application Number Title Priority Date Filing Date
AT94907025T ATE170272T1 (de) 1993-02-05 1994-01-27 Verfahren zum herstellen von rohrverbindungen und werkzeug zum ausführen dieses verfahrens

Country Status (15)

Country Link
EP (1) EP0682758B1 (de)
JP (1) JP3325894B2 (de)
KR (1) KR100272066B1 (de)
AT (1) ATE170272T1 (de)
AU (1) AU690094B2 (de)
CA (1) CA2155510C (de)
DE (1) DE69412792T2 (de)
DK (1) DK0682758T3 (de)
ES (1) ES2122239T3 (de)
FI (1) FI109826B (de)
NO (1) NO312786B1 (de)
NZ (1) NZ261640A (de)
PL (1) PL173682B1 (de)
SE (1) SE9300365L (de)
WO (1) WO1994018486A1 (de)

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US5937501A (en) * 1993-03-27 1999-08-17 Imgram; Friedrich Process for making tube conduit connections
DE4310000C2 (de) * 1993-03-27 2002-03-28 Wirsbo Pex Gmbh Rohrleitungsverbindung, Rohrleitungsverbinder und Verwendung einer Hydraulikvorrichtung zur Herstellung von Rohrleitungsverbindungen
DE19504968A1 (de) * 1995-02-15 1996-08-22 Wirsbo Rohrprod Und Vertr Gmbh Spreizwerkzeug für Kaltverformungen
US5770139A (en) * 1996-03-27 1998-06-23 Medtronic, Inc. Method and apparatus for connecting tubing to barbed connectors
DE29613985U1 (de) * 1996-08-13 1996-11-14 Wirsbo Rohrprod Und Vertr Gmbh Spreizwerkzeug mit Rückholvorrichtung
US6170885B1 (en) * 1996-10-10 2001-01-09 The Gates Corporation Self-adjusting at-least-twice-oriented polymer hose and tubing clamp
ATE224802T1 (de) * 1997-05-12 2002-10-15 Virax Sa Aufweitungsvorrichtung zum formen von muffen an kunststoff- oder kunststoff/aluminium-rohrenden
DE19735261C1 (de) 1997-08-14 1998-12-24 Hewing Gmbh Anschlußvorrichtung für ein Kunststoffrohr
DE19802335A1 (de) 1998-01-23 1999-07-29 Basf Ag Mit Heterocyclen funktionalisierte Azoverbindungen
SE511766C2 (sv) * 1998-03-23 1999-11-22 Wirsbo Bruks Ab Flerskiktsrör av plast och dess användning
DE19907736A1 (de) * 1999-02-23 2000-08-24 Volkswagen Ag Dichtende Verbindung von Leitungen oder Rohren untereinander oder mit Behältern und Verfahren zur Herstellung einer solchen Verbindung
DE10130858A1 (de) * 2001-06-28 2003-01-16 Markus Schmidt Schiebehülsenverbindung für Rohrleitungen
DE202004016374U1 (de) * 2004-10-22 2006-02-23 Andreas Stihl Ag & Co. Kg Anschlußelement
EP1741968A1 (de) * 2005-07-08 2007-01-10 Uponor Innovation Ab Spannring
FI119657B (fi) * 2006-08-25 2009-01-30 Uponor Innovation Ab Menetelmä ja sovitelma putken liittämiseksi liitoskappaleeseen ja putkiliitos
EP1930605A1 (de) 2006-12-06 2008-06-11 Uponor Innovation Ab Fitting für ein Rohr, insbesondere ein Kunststoffrohr oder ein Kunststoff-/Metallverbundrohr
FR2910828B1 (fr) 2006-12-28 2009-03-06 Virax Soc Par Actions Simplifi Dispositif d'outil a expansion pour pince sur machine a realiser des emboitures aux extremites de tuyaux en matiere plastique ou composite
US8431067B2 (en) * 2007-03-06 2013-04-30 Mercury Plastics, Inc. Method for making a reservoir
DE102007024677B4 (de) * 2007-05-25 2009-07-30 Kautex Textron Gmbh & Co. Kg Verfahren zur Herstellung eines Behälters aus thermoplastischem Kunststoff durch Extrusionsblasformen sowie Anschlusselement zur Verwendung bei einem solchen Verfahren
ES2433372T5 (es) 2007-06-25 2024-04-02 Uponor Innovation Ab Procedimiento y herramienta de expansión de un extremo de tubería
CH699306A1 (de) * 2008-08-13 2010-02-15 Finemon Ag Aufweitwerkzeug für Rohre und Rohrpresskupplung.
PT2420333E (pt) 2010-08-16 2015-03-02 Uponor Innovation Ab Ferramenta e método de expansão de uma ponta de tubo
US20140338178A1 (en) * 2013-04-26 2014-11-20 Robert Bosch Tool Corporation Method and Jaw Assembly for Applying End Fittings or Couplings to a Fluid Hose
CN105179837B (zh) 2014-06-03 2019-11-05 机械工业股份公司 用于运送气体、压缩空气、和其他流体的导管的连接接头
US20150362109A1 (en) * 2014-06-12 2015-12-17 Buchanan Consulting LLC Tube fitting connection system and method
US10330228B2 (en) 2015-08-31 2019-06-25 Ingersoll-Rand Company Pipe connection fitting
US11543065B2 (en) 2016-09-02 2023-01-03 Zurn Industries, Llc Extruded cold-expansion compression collar
US11541581B2 (en) 2016-09-02 2023-01-03 Zurn Industries, Llc Injection molded cold-expansion compression collar
US11054076B2 (en) 2016-11-04 2021-07-06 Zurn Industries, Llc Reinforcing ring with sleeve
CN110735984B (zh) * 2019-10-24 2021-02-12 江苏宏博机械制造有限公司 一种便于安装的高密封性波纹管连接装置
CN111516275B (zh) * 2020-04-27 2022-05-03 四川中自科技有限公司 一种无扩口导管连接件挤压成型设备
EP4060212A1 (de) * 2021-03-18 2022-09-21 Uponor Innovation AB Rohrverbindung und verfahren zur herstellung einer rohrverbindung
TWI826120B (zh) * 2022-11-16 2023-12-11 白翼誌 燃氣閥管接頭之束管防脫裝置

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US924049A (en) 1908-12-17 1909-06-08 John W Faessler Flue or tube expander.
US4065953A (en) * 1976-06-15 1978-01-03 Mannesmann Aktiengesellschaft Mechanical tube expander
AU628743B2 (en) * 1990-06-22 1992-09-17 Crane Enfield Metals Pty Limited Expanding mandrel method and product produced thereby

Also Published As

Publication number Publication date
SE9300365D0 (sv) 1993-02-05
EP0682758B1 (de) 1998-08-26
NO953055L (no) 1995-10-04
NO312786B1 (no) 2002-07-01
FI109826B (fi) 2002-10-15
AU6047194A (en) 1994-08-29
FI953670A0 (fi) 1995-08-01
FI953670A (fi) 1995-08-01
WO1994018486A1 (en) 1994-08-18
PL309914A1 (en) 1995-11-13
CA2155510C (en) 2005-07-26
SE500665C2 (sv) 1994-08-01
NZ261640A (en) 1997-05-26
PL173682B1 (pl) 1998-04-30
EP0682758A1 (de) 1995-11-22
ES2122239T3 (es) 1998-12-16
DK0682758T3 (da) 1999-05-25
JP3325894B2 (ja) 2002-09-17
KR100272066B1 (ko) 2000-11-15
AU690094B2 (en) 1998-04-23
JPH08506407A (ja) 1996-07-09
DE69412792T2 (de) 1999-01-21
DE69412792D1 (de) 1998-10-01
SE9300365L (sv) 1994-08-01
NO953055D0 (no) 1995-08-03
CA2155510A1 (en) 1994-08-18

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UEP Publication of translation of european patent specification
EEFA Change of the company name