DE29603278U1 - Device for cleaning rotor blades of wind turbines - Google Patents

Device for cleaning rotor blades of wind turbines

Info

Publication number
DE29603278U1
DE29603278U1 DE29603278U DE29603278U DE29603278U1 DE 29603278 U1 DE29603278 U1 DE 29603278U1 DE 29603278 U DE29603278 U DE 29603278U DE 29603278 U DE29603278 U DE 29603278U DE 29603278 U1 DE29603278 U1 DE 29603278U1
Authority
DE
Germany
Prior art keywords
rotor blades
wind turbines
cleaning rotor
cleaning
turbines
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.)
Expired - Lifetime
Application number
DE29603278U
Other languages
German (de)
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.)
BEYER, REINHARD, DE
Original Assignee
BEYER REINHARD 23769 BANNESDORF DE
WITT JAN 23769 BANNESDORF DE
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 BEYER REINHARD 23769 BANNESDORF DE, WITT JAN 23769 BANNESDORF DE filed Critical BEYER REINHARD 23769 BANNESDORF DE
Priority to DE29603278U priority Critical patent/DE29603278U1/en
Publication of DE29603278U1 publication Critical patent/DE29603278U1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B64—AIRCRAFT; AVIATION; COSMONAUTICS
    • B64F—GROUND OR AIRCRAFT-CARRIER-DECK INSTALLATIONS SPECIALLY ADAPTED FOR USE IN CONNECTION WITH AIRCRAFT; DESIGNING, MANUFACTURING, ASSEMBLING, CLEANING, MAINTAINING OR REPAIRING AIRCRAFT, NOT OTHERWISE PROVIDED FOR; HANDLING, TRANSPORTING, TESTING OR INSPECTING AIRCRAFT COMPONENTS, NOT OTHERWISE PROVIDED FOR
    • B64F5/00—Designing, manufacturing, assembling, cleaning, maintaining or repairing aircraft, not otherwise provided for; Handling, transporting, testing or inspecting aircraft components, not otherwise provided for
    • B64F5/30—Cleaning aircraft
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66F—HOISTING, LIFTING, HAULING OR PUSHING, NOT OTHERWISE PROVIDED FOR, e.g. DEVICES WHICH APPLY A LIFTING OR PUSHING FORCE DIRECTLY TO THE SURFACE OF A LOAD
    • B66F11/00—Lifting devices specially adapted for particular uses not otherwise provided for
    • B66F11/04—Lifting devices specially adapted for particular uses not otherwise provided for for movable platforms or cabins, e.g. on vehicles, permitting workmen to place themselves in any desired position for carrying out required operations
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
    • E04G3/00—Scaffolds essentially supported by building constructions, e.g. adjustable in height
    • E04G3/24—Scaffolds essentially supported by building constructions, e.g. adjustable in height specially adapted for particular parts of buildings or for buildings of particular shape, e.g. chimney stacks or pylons
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
    • E04G3/00—Scaffolds essentially supported by building constructions, e.g. adjustable in height
    • E04G3/24—Scaffolds essentially supported by building constructions, e.g. adjustable in height specially adapted for particular parts of buildings or for buildings of particular shape, e.g. chimney stacks or pylons
    • E04G3/243—Scaffolds essentially supported by building constructions, e.g. adjustable in height specially adapted for particular parts of buildings or for buildings of particular shape, e.g. chimney stacks or pylons following the outside contour of a building
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
    • E04G3/00—Scaffolds essentially supported by building constructions, e.g. adjustable in height
    • E04G3/28—Mobile scaffolds; Scaffolds with mobile platforms
    • E04G3/30—Mobile scaffolds; Scaffolds with mobile platforms suspended by flexible supporting elements, e.g. cables
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
    • F03D—WIND MOTORS
    • F03D80/00—Details, components or accessories not provided for in groups F03D1/00 - F03D17/00
    • F03D80/50—Maintenance or repair
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
    • F03D—WIND MOTORS
    • F03D80/00—Details, components or accessories not provided for in groups F03D1/00 - F03D17/00
    • F03D80/50—Maintenance or repair
    • F03D80/55—Cleaning
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E10/00—Energy generation through renewable energy sources
    • Y02E10/70—Wind energy
    • Y02E10/72—Wind turbines with rotation axis in wind direction
DE29603278U 1996-02-23 1996-02-23 Device for cleaning rotor blades of wind turbines Expired - Lifetime DE29603278U1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE29603278U DE29603278U1 (en) 1996-02-23 1996-02-23 Device for cleaning rotor blades of wind turbines

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE29603278U DE29603278U1 (en) 1996-02-23 1996-02-23 Device for cleaning rotor blades of wind turbines

Publications (1)

Publication Number Publication Date
DE29603278U1 true DE29603278U1 (en) 1996-04-25

Family

ID=8019970

Family Applications (1)

Application Number Title Priority Date Filing Date
DE29603278U Expired - Lifetime DE29603278U1 (en) 1996-02-23 1996-02-23 Device for cleaning rotor blades of wind turbines

Country Status (1)

Country Link
DE (1) DE29603278U1 (en)

Cited By (32)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19726408C1 (en) * 1997-06-21 1999-03-18 Gerhard Reineke Schlosserei Un Working platform for maintenance of wind turbine rotor blades
WO2000017086A1 (en) * 1998-09-22 2000-03-30 Antonius Siebert Device for carrying out repair and service work, especially on the rotor blades of wind turbine generators
DE19909698C2 (en) * 1998-09-22 2001-06-28 Siebert Antonius J Device for carrying out repairs and services, in particular on rotor blades of wind turbines
EP1141543A1 (en) † 1998-12-09 2001-10-10 Aloys Wobben Reduction in the noise produced by a rotor blade of a wind turbine
DE10111523A1 (en) * 2001-03-09 2002-09-26 Erwin Keller Transportable working device with lifting device for working on a wind turbine
DE10119429A1 (en) * 2001-04-20 2002-10-24 Enron Wind Gmbh Wind turbine with sliding container
WO2003038277A1 (en) * 2001-11-02 2003-05-08 Blanca Benedicto Soler Scaffold for aerogenerators having a shaft with a variable section
NL1019943C2 (en) * 2002-02-11 2003-08-13 Ngup Holding B V Stand for carrying out work on wind turbines, comprises frame with movable bridge and clamping mechanism for securing stand to turbine mast
DE20210406U1 (en) * 2002-07-05 2003-11-13 Geo Ges Fuer En Und Oekologie Device for testing, maintaining wind energy system rotor blades has frame with two legs linked together, each with guide rollers and sensors, holding band attached to both legs, tensioning device
DE10225025A1 (en) * 2002-06-06 2003-12-24 Aloys Wobben Device for handling rotor blades
WO2004022970A1 (en) * 2002-09-04 2004-03-18 Pp Energy Aps A method and a device for lifting and/or lowering of objects at a wind turbine or the like and uses hereof
WO2004067954A1 (en) * 2003-01-29 2004-08-12 Aloys Wobben Method for mounting a rotor blade of a wind energy installation without using a crane
WO2004081373A2 (en) * 2003-03-11 2004-09-23 aeroconcept Ingenieurgesellschaft für Luftfahrttechnik und Faserverbundtechnologie mbH Maintenance platform
WO2004092577A1 (en) * 2003-04-15 2004-10-28 Vestas Wind Systems A/S Method of servicing the outer components of a wind turbine such as the wind turbine blades and the tower with a work platform and work platform
DE10333628A1 (en) * 2003-07-24 2005-02-17 Buss-Hamm-Plottki Ohg Cleaning device for cleaning a wind power plant's elongated rotor wings fitted above the earth's surface has a bogie, supporting elements with a cantilever arm and a rotary brush
EP1516846A2 (en) * 2003-09-19 2005-03-23 PERI, S.A. Sociedad Unipersonal Lifting device for lifting persons along the shaft of a wind generator.
WO2005064152A2 (en) 2003-12-30 2005-07-14 Pp Energy Aps Device for enabling access to a structure above ground level
WO2005119054A1 (en) * 2004-05-26 2005-12-15 Hexagon Metrology Gmbh Device for the on-site testing of rotor blades of wind power stations
WO2007033671A1 (en) * 2005-09-21 2007-03-29 Lm Glasfiber A/S Attachment devices on a wind turbine blade and a method of servicing utilising these devices
WO2008009352A1 (en) * 2006-07-20 2008-01-24 Repower Systems Ag Arrangement of a lifting device on a rotor blade of a wind energy system and method
EP1577550A3 (en) * 2004-03-17 2009-03-04 W2E Wind to Energy GmbH Method for provisioning a winch on a wind energy plant and device for carrying out this method
AU2002362203B2 (en) * 2001-12-06 2009-03-26 Pp Energy Aps Method and apparatus for treatment of a rotor blade on a windmill
CN100540886C (en) * 2004-11-22 2009-09-16 再生动力系统股份公司 Install and/or dismantle the apparatus and method of the member of wind generating unit
EP1826401A3 (en) * 2006-02-23 2010-05-12 REpower Systems AG Mounting and dismounting of a wind turbine blade
US8052396B2 (en) 2002-06-01 2011-11-08 Aloys Wobben Method for assembling/dismounting components of a wind power plant
GB2487797A (en) * 2011-02-07 2012-08-08 Vestas Wind Sys As Wind turbine rotor service platform
WO2012149935A1 (en) 2011-05-04 2012-11-08 Pp Energy Aps Platform assembly for enabling access to a wind turbine
WO2012167788A3 (en) * 2011-06-09 2013-04-18 Pp Energy Aps Lifting device for connecting two rotor blade segments of a wind turbine
US8490749B2 (en) 2006-01-27 2013-07-23 Pp Energy Aps Device for enabling access to a structure above ground level
ES2485592A1 (en) * 2013-02-12 2014-08-13 Global Energy Services Siemsa, S.A. Device for protecting lifting platforms for maintaining wind generators
CN108331721A (en) * 2018-04-16 2018-07-27 王明跃 A kind of fan blade of wind driven generator cleaning device
US10161389B2 (en) 2008-06-26 2018-12-25 Pp Energy Aps Device for enabling access to a wind turbine

Cited By (58)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19726408C1 (en) * 1997-06-21 1999-03-18 Gerhard Reineke Schlosserei Un Working platform for maintenance of wind turbine rotor blades
WO2000017086A1 (en) * 1998-09-22 2000-03-30 Antonius Siebert Device for carrying out repair and service work, especially on the rotor blades of wind turbine generators
DE19909698C2 (en) * 1998-09-22 2001-06-28 Siebert Antonius J Device for carrying out repairs and services, in particular on rotor blades of wind turbines
EP1141543A1 (en) † 1998-12-09 2001-10-10 Aloys Wobben Reduction in the noise produced by a rotor blade of a wind turbine
EP1141543B2 (en) † 1998-12-09 2013-11-20 Aloys Wobben Rotor blade of a wind turbine
DE10111523C2 (en) * 2001-03-09 2003-01-30 Erwin Keller Transportable working device with lifting device for working on a wind turbine
DE10111523A1 (en) * 2001-03-09 2002-09-26 Erwin Keller Transportable working device with lifting device for working on a wind turbine
DE10119429A1 (en) * 2001-04-20 2002-10-24 Enron Wind Gmbh Wind turbine with sliding container
US6750559B2 (en) 2001-04-20 2004-06-15 General Electric Company Wind power plant with a movable container
WO2003038277A1 (en) * 2001-11-02 2003-05-08 Blanca Benedicto Soler Scaffold for aerogenerators having a shaft with a variable section
ES2189671A1 (en) * 2001-11-02 2003-07-01 Servicios De Ingenieria Y Mont Scaffold for aerogenerators having a shaft with a variable section
US8887664B2 (en) 2001-12-06 2014-11-18 Pp Energy Aps Method and apparatus for treatment of a rotor blade on a windmill
EP1583905B1 (en) * 2001-12-06 2010-04-28 PP Energy ApS Method and apparatus for treatment of a rotor blade on a windmill
US7521083B2 (en) 2001-12-06 2009-04-21 Pp Energy Aps Method and apparatus for treatment of a rotor blade on a windmill
AU2002362203B2 (en) * 2001-12-06 2009-03-26 Pp Energy Aps Method and apparatus for treatment of a rotor blade on a windmill
NL1019943C2 (en) * 2002-02-11 2003-08-13 Ngup Holding B V Stand for carrying out work on wind turbines, comprises frame with movable bridge and clamping mechanism for securing stand to turbine mast
US8052396B2 (en) 2002-06-01 2011-11-08 Aloys Wobben Method for assembling/dismounting components of a wind power plant
DE10225025A1 (en) * 2002-06-06 2003-12-24 Aloys Wobben Device for handling rotor blades
DE20210406U1 (en) * 2002-07-05 2003-11-13 Geo Ges Fuer En Und Oekologie Device for testing, maintaining wind energy system rotor blades has frame with two legs linked together, each with guide rollers and sensors, holding band attached to both legs, tensioning device
WO2004022970A1 (en) * 2002-09-04 2004-03-18 Pp Energy Aps A method and a device for lifting and/or lowering of objects at a wind turbine or the like and uses hereof
US7785073B2 (en) 2003-01-29 2010-08-31 Aloys Wobben Method for mounting a rotor blade of a wind power installation without using a crane
CN100445551C (en) * 2003-01-29 2008-12-24 艾劳埃斯·乌本 Method for mounting a rotor blade of a wind energy installation without using a crane
WO2004067954A1 (en) * 2003-01-29 2004-08-12 Aloys Wobben Method for mounting a rotor blade of a wind energy installation without using a crane
WO2004081373A2 (en) * 2003-03-11 2004-09-23 aeroconcept Ingenieurgesellschaft für Luftfahrttechnik und Faserverbundtechnologie mbH Maintenance platform
DE10311674B4 (en) * 2003-03-11 2007-02-01 aeroconcept Ingenieurgesellschaft für Luftfahrttechnik und Faserverbundtechnologie mbH maintenance platform
EP2570567A3 (en) * 2003-03-11 2014-08-06 Aeroconcept Ingenieursgesellschaft für Luftfahrtechnik und Faserverbundtechnologie mbH Maintenance platform
DE10311674A1 (en) * 2003-03-11 2004-09-30 aeroconcept Ingenieurgesellschaft für Luftfahrttechnik und Faserverbundtechnologie mbH maintenance platform
US7740107B2 (en) 2003-03-11 2010-06-22 Aeroconcept Ingenieurgesellschaft für Luftfahrt-technik und Faserverbundtechnologie mbH Maintenance platform
WO2004081373A3 (en) * 2003-03-11 2004-10-28 Aeroconcept Ingenieurgesellsch Maintenance platform
CN100337024C (en) * 2003-04-15 2007-09-12 维斯塔斯风力系统有限公司 Method for examining and repairing wind turbine external component e.g. wind turbine vane and tower using work platform and work platform
US8453797B2 (en) 2003-04-15 2013-06-04 Vestas Wind Systems A/S Method of servicing the outer components of a wind turbine such as the wind turbine blades and the tower with a work platform and work platform
WO2004092577A1 (en) * 2003-04-15 2004-10-28 Vestas Wind Systems A/S Method of servicing the outer components of a wind turbine such as the wind turbine blades and the tower with a work platform and work platform
US7934585B2 (en) 2003-04-15 2011-05-03 Vestas Wind Systems A/S Method of servicing the outer components of a wind turbine such as the wind turbine blades and the tower with a work platform and work platform
DE10333628A1 (en) * 2003-07-24 2005-02-17 Buss-Hamm-Plottki Ohg Cleaning device for cleaning a wind power plant's elongated rotor wings fitted above the earth's surface has a bogie, supporting elements with a cantilever arm and a rotary brush
EP1516846A3 (en) * 2003-09-19 2006-11-29 PERI, S.A. Sociedad Unipersonal Lifting device for lifting persons along the shaft of a wind generator.
EP1516846A2 (en) * 2003-09-19 2005-03-23 PERI, S.A. Sociedad Unipersonal Lifting device for lifting persons along the shaft of a wind generator.
WO2005064152A2 (en) 2003-12-30 2005-07-14 Pp Energy Aps Device for enabling access to a structure above ground level
AU2004308998B2 (en) * 2003-12-30 2010-01-28 Pp Energy Aps Device for enabling access to a structure above ground level
US8083029B2 (en) 2003-12-30 2011-12-27 Pp Energy Aps Device for enabling access to a structure above ground level
EP1577550A3 (en) * 2004-03-17 2009-03-04 W2E Wind to Energy GmbH Method for provisioning a winch on a wind energy plant and device for carrying out this method
WO2005119054A1 (en) * 2004-05-26 2005-12-15 Hexagon Metrology Gmbh Device for the on-site testing of rotor blades of wind power stations
CN100540886C (en) * 2004-11-22 2009-09-16 再生动力系统股份公司 Install and/or dismantle the apparatus and method of the member of wind generating unit
US8500403B2 (en) 2005-09-21 2013-08-06 Lm Glasfiber A/S Attachment devices on a wind turbine blade and a method of servicing utilising these device
WO2007033671A1 (en) * 2005-09-21 2007-03-29 Lm Glasfiber A/S Attachment devices on a wind turbine blade and a method of servicing utilising these devices
US8490749B2 (en) 2006-01-27 2013-07-23 Pp Energy Aps Device for enabling access to a structure above ground level
EP1826401A3 (en) * 2006-02-23 2010-05-12 REpower Systems AG Mounting and dismounting of a wind turbine blade
WO2008009352A1 (en) * 2006-07-20 2008-01-24 Repower Systems Ag Arrangement of a lifting device on a rotor blade of a wind energy system and method
US10161389B2 (en) 2008-06-26 2018-12-25 Pp Energy Aps Device for enabling access to a wind turbine
GB2487797A (en) * 2011-02-07 2012-08-08 Vestas Wind Sys As Wind turbine rotor service platform
WO2012149935A1 (en) 2011-05-04 2012-11-08 Pp Energy Aps Platform assembly for enabling access to a wind turbine
US9714642B2 (en) 2011-06-09 2017-07-25 Pp Energy Aps Lifting device for connecting two rotor blade segments of a wind turbine
CN103597203A (en) * 2011-06-09 2014-02-19 Pp能源有限责任公司 Lifting device for connecting two rotor blade segments of a wind turbine
WO2012167788A3 (en) * 2011-06-09 2013-04-18 Pp Energy Aps Lifting device for connecting two rotor blade segments of a wind turbine
CN103597203B (en) * 2011-06-09 2016-10-12 Pp能源有限责任公司 For connecting the lowering or hoisting gear of two rotor blade sections of wind turbine
ES2485592A1 (en) * 2013-02-12 2014-08-13 Global Energy Services Siemsa, S.A. Device for protecting lifting platforms for maintaining wind generators
WO2014125142A1 (en) * 2013-02-12 2014-08-21 Global Energy Services Siemsa, S.A. Device for protecting lifting platforms for maintaining wind generators
CN108331721A (en) * 2018-04-16 2018-07-27 王明跃 A kind of fan blade of wind driven generator cleaning device
CN108331721B (en) * 2018-04-16 2024-01-30 王明跃 Fan blade cleaning device of wind driven generator

Similar Documents

Publication Publication Date Title
DE29603278U1 (en) Device for cleaning rotor blades of wind turbines
DE69534860D1 (en) turbine blades
DE69938470D1 (en) Method of inspection of turbine blades
EE200100306A (en) Wind turbine rotor blade
DK0767877T3 (en) Wind turbine with integrated rotor blade system with multiple units
DK0657646T3 (en) Rotor blade for wind turbines
DE69514361T2 (en) DEVICE AND METHOD FOR PRODUCING MAIN ROTOR BLADES FOR HELICOPTERS
DE69729980D1 (en) Turbine blade cooling
NO992642L (en) Water turbine with screw blade
GB9607578D0 (en) Turbine rotor blades
DE29720741U1 (en) Device for detecting vibrations of the rotor blades of a wind turbine
DE69602460T2 (en) ROTOR SYSTEM WITH DIFFERENT BLADE LENGTHS TO REDUCE THE NOISE LEVEL OF BLADES
DE69502389D1 (en) EFFECTIVE CLEANING OF TURBINE BLADES
DE69503217D1 (en) Device for the axial fastening of blades of a jet turbine rotor
DE69506985D1 (en) Device for adjusting the blades of a helicopter rotor
DE69503733T2 (en) Device for adjusting the blades of a helicopter rotor
DE59711982D1 (en) Rotor blade connection
GB9822806D0 (en) Analysis of vibration of turbine blades
DE29618525U1 (en) Blade flange for rotor blades of wind turbines
DE29822003U1 (en) Concrete vibrator for rotor blades on wind power plants
DE29602674U1 (en) Wind turbine
DE29621449U1 (en) Device for improving the grid compatibility of wind turbines with asynchronous generators
DE59703585D1 (en) Coolable turbine blade
DE29601634U1 (en) Wind turbine
GB2331556A9 (en) Rotating blade wind turbine

Legal Events

Date Code Title Description
R207 Utility model specification

Effective date: 19960605

R150 Utility model maintained after payment of first maintenance fee after three years

Effective date: 19990427

R081 Change of applicant/patentee

Owner name: BEYER, REINHARD, DE

Free format text: FORMER OWNER: REINHARD BEYER,JAN WITT, , DE

Effective date: 20010504

R151 Utility model maintained after payment of second maintenance fee after six years

Effective date: 20020712

R152 Utility model maintained after payment of third maintenance fee after eight years

Effective date: 20040211

R021 Search request validly filed

Effective date: 20040802

R163 Identified publications notified

Effective date: 20050126

R071 Expiry of right