[go: up one dir, main page]

BR8802797A - Pa essencialmente em material composito,especialmente para uma helice de multiplas pas e seu processo de fabricacao - Google Patents

Pa essencialmente em material composito,especialmente para uma helice de multiplas pas e seu processo de fabricacao

Info

Publication number
BR8802797A
BR8802797A BR8802797A BR8802797A BR8802797A BR 8802797 A BR8802797 A BR 8802797A BR 8802797 A BR8802797 A BR 8802797A BR 8802797 A BR8802797 A BR 8802797A BR 8802797 A BR8802797 A BR 8802797A
Authority
BR
Brazil
Prior art keywords
propeller
essentially
manufacturing process
composite material
multiple pas
Prior art date
Application number
BR8802797A
Other languages
English (en)
Inventor
Bruno Barbier
Jean Alain Michaud-Soret
Original Assignee
Aerospatiale
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 Aerospatiale filed Critical Aerospatiale
Publication of BR8802797A publication Critical patent/BR8802797A/pt

Links

Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29DPRODUCING PARTICULAR ARTICLES FROM PLASTICS OR FROM SUBSTANCES IN A PLASTIC STATE
    • B29D99/00Subject matter not provided for in other groups of this subclass
    • B29D99/0025Producing blades or the like, e.g. blades for turbines, propellers, or wings
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B64AIRCRAFT; AVIATION; COSMONAUTICS
    • B64CAEROPLANES; HELICOPTERS
    • B64C11/00Propellers, e.g. of ducted type; Features common to propellers and rotors for rotorcraft
    • B64C11/16Blades
    • B64C11/20Constructional features
    • B64C11/26Fabricated blades
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B64AIRCRAFT; AVIATION; COSMONAUTICS
    • B64CAEROPLANES; HELICOPTERS
    • B64C27/00Rotorcraft; Rotors peculiar thereto
    • B64C27/32Rotors
    • B64C27/46Blades
    • B64C27/473Constructional features
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B64AIRCRAFT; AVIATION; COSMONAUTICS
    • B64CAEROPLANES; HELICOPTERS
    • B64C27/00Rotorcraft; Rotors peculiar thereto
    • B64C27/32Rotors
    • B64C27/46Blades
    • B64C27/473Constructional features
    • B64C2027/4733Rotor blades substantially made from particular materials
    • B64C2027/4736Rotor blades substantially made from particular materials from composite materials
    • YGENERAL 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
    • Y10TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10TTECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00Metal working
    • Y10T29/49Method of mechanical manufacture
    • Y10T29/49316Impeller making
    • Y10T29/49332Propeller making
    • YGENERAL 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
    • Y10TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10TTECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00Metal working
    • Y10T29/49Method of mechanical manufacture
    • Y10T29/49316Impeller making
    • Y10T29/49336Blade making
    • Y10T29/49337Composite blade

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Aviation & Aerospace Engineering (AREA)
  • Moulding By Coating Moulds (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)
  • Turbine Rotor Nozzle Sealing (AREA)
BR8802797A 1987-06-09 1988-06-08 Pa essencialmente em material composito,especialmente para uma helice de multiplas pas e seu processo de fabricacao BR8802797A (pt)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR8707981A FR2616409B1 (fr) 1987-06-09 1987-06-09 Pale en materiaux composites et son procede de fabrication

Publications (1)

Publication Number Publication Date
BR8802797A true BR8802797A (pt) 1989-01-03

Family

ID=9351832

Family Applications (1)

Application Number Title Priority Date Filing Date
BR8802797A BR8802797A (pt) 1987-06-09 1988-06-08 Pa essencialmente em material composito,especialmente para uma helice de multiplas pas e seu processo de fabricacao

Country Status (9)

Country Link
US (2) US4892462A (pt)
EP (1) EP0296014B1 (pt)
JP (1) JP2555152B2 (pt)
CN (1) CN1019178B (pt)
AU (1) AU615197B2 (pt)
BR (1) BR8802797A (pt)
CA (1) CA1325627C (pt)
DE (1) DE3879287T2 (pt)
FR (1) FR2616409B1 (pt)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107061104A (zh) * 2017-06-12 2017-08-18 罗雪睿 一种双曲面尖齿状叶片水轮机转轮

Families Citing this family (97)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5314309A (en) * 1990-05-25 1994-05-24 Anthony Blakeley Turbine blade with metallic attachment and method of making the same
US5118257A (en) * 1990-05-25 1992-06-02 Sundstrand Corporation Boot attachment for composite turbine blade, turbine blade and method of making turbine blade
US5174024A (en) * 1990-09-17 1992-12-29 Sterrett Terry L Tail rotor abrasive strip
US5110260A (en) * 1990-12-17 1992-05-05 United Technologies Corporation Articulated helicopter rotor within an improved blade-to-hub connection
US5178457A (en) * 1991-11-19 1993-01-12 Tandem Products, Inc. Mixer fin
DE4203205C2 (de) * 1992-02-05 1995-12-07 Muehlbauer Luftfahrttechn Gmbh Propellerblattlagerung
US5392514A (en) * 1992-02-06 1995-02-28 United Technologies Corporation Method of manufacturing a composite blade with a reinforced leading edge
FR2699498B1 (fr) * 1992-12-23 1995-03-10 Eurocopter France Pale en composite thermoplastique, notamment pour rotor arrière caréné d'hélicoptère, et son procédé de fabrication.
FR2699499B1 (fr) * 1992-12-23 1995-03-10 Eurocopter France Pale en composite thermoplastique, notamment pour rotor arrière caréné d'hélicoptère, et son procédé de fabrication avec étape d'injection.
DE4411679C1 (de) * 1994-04-05 1994-12-01 Mtu Muenchen Gmbh Schaufelblatt in Faserverbundbauweise mit Schutzprofil
US5433002A (en) * 1994-05-05 1995-07-18 The United States Of America As Represented By The Secretary Of The Navy Fabrication process for complex composite parts
US5486096A (en) * 1994-06-30 1996-01-23 United Technologies Corporation Erosion resistant surface protection
DE19529706C2 (de) * 1995-08-11 2001-08-02 Deutsch Zentr Luft & Raumfahrt Flächentragwerk, insbesondere für ein Luftfahrzeug
FR2740378B1 (fr) * 1995-10-30 1998-01-02 Eurocopter France Procede de fabrication d'une pale a pas variable en materiau composite pour rotor d'helicoptere, et pale a pas variable pouvant etre obtenue par un tel procede
FR2740380B1 (fr) * 1995-10-30 1998-01-02 Eurocopter France Procede de fabrication d'une pale a pas variable en materiau composite pour rotor d'helicoptere
FR2740379B1 (fr) * 1995-10-30 1998-01-02 Eurocopter France Procede de fabrication d'une pale en materiau composite pour rotor d'helicoptere, et pale pouvant etre obtenue par un tel procede
EP0861145B1 (en) * 1995-11-13 2003-06-04 GMIC, Corp. Fabrication of tooling by thermal spraying
FR2756211B1 (fr) * 1996-11-26 1999-01-29 Eurocopter France Procede de fabrication d'un element composite flexible et torsible
US6109871A (en) * 1997-03-31 2000-08-29 Horton, Inc. Integrated fan assembly with variable pitch blades
US6327957B1 (en) * 1998-01-09 2001-12-11 Wind Eagle Joint Venture Wind-driven electric generator apparatus of the downwind type with flexible changeable-pitch blades
FR2776264B1 (fr) * 1998-03-23 2000-06-02 Eurocopter France Pale a pas variable en materiau composite pour rotor d'helicoptere et procede de fabrication d'une telle pale
US6253716B1 (en) 1999-07-07 2001-07-03 Horton, Inc. Control system for cooling fan assembly having variable pitch blades
IL141214A (en) * 2001-02-01 2004-03-28 Vladimir Kliatzkin Components with a structure made of composite material
US6715992B2 (en) * 2001-04-04 2004-04-06 R & M Technology, Llc Helicopter blade and method of manufacture
RU2239583C1 (ru) * 2003-05-23 2004-11-10 Рыбаулин Василий Михайлович Способ изготовления лопасти ветрового колеса из композиционных материалов
FR2855811B1 (fr) * 2003-06-05 2005-08-05 Eurocopter France Pale de rotor a pas variable, pour rotors carenes, notamment d'helicopteres
JP4585230B2 (ja) * 2004-05-17 2010-11-24 学校法人東海大学 繊維強化複合材料
US7749421B2 (en) 2006-12-27 2010-07-06 Hexcel Corporation Helicopter blade mandrel
GB2450139B (en) * 2007-06-14 2010-05-05 Rolls Royce Plc An aerofoil for a gas turbine engine
CN100494695C (zh) * 2007-07-20 2009-06-03 南京航空航天大学 复合材料空腔风扇叶片
ITTO20070666A1 (it) * 2007-09-24 2009-03-25 Blue H Intellectual Properties Sistema di conversione di energia eolica offshore per acque profonde
WO2009078871A1 (en) * 2007-12-18 2009-06-25 Bell Helicopter Textron Inc. Rotor blade and method of making same
US8066504B2 (en) * 2008-01-25 2011-11-29 Hexcel Corporation Helicopter blade mandrel with roller assembly
IT1392320B1 (it) * 2008-12-09 2012-02-24 Alenia Aeronautica Spa Bordo d'attacco per ali ed impennaggi di aeromobili
WO2010117262A1 (en) * 2009-04-10 2010-10-14 Xemc Darwind B.V. A protected wind turbine blade, a method of manufacturing it and a wind turbine
DE102009002501A1 (de) * 2009-04-20 2010-10-28 Wobben, Aloys Rotorblattelement und Herstellverfahren
EP2246258B1 (en) * 2009-04-29 2011-08-03 EUROCOPTER DEUTSCHLAND GmbH Rotor blade with control tube
EP2246259B1 (en) * 2009-04-29 2012-12-12 Eurocopter Deutschland GmbH Rotor wing with integrated tension-torque-transmission element and method for its production
ATE522438T1 (de) * 2009-04-29 2011-09-15 Eurocopter Deutschland Rotorschaufel aus einem faserverstärkten verbundstoffmaterial
DK2275673T3 (en) * 2009-07-17 2018-03-05 Vestas Wind Sys As Manufacture of WTG wing with a cross beam
ES2423186T3 (es) * 2009-08-20 2013-09-18 Siemens Aktiengesellschaft Estructura de plástico reforzado con fibra y método para producir la estructura de plástico reforzado con fibra
WO2011026009A1 (en) * 2009-08-28 2011-03-03 Polystrand, Inc Thermoplastic rotor blade
RU2419541C1 (ru) * 2009-10-13 2011-05-27 Российская Федерация, От Имени Которой Выступает Министерство Промышленности И Торговли Российской Федерации Устройство для получения многослойной заготовки для изготовления слоистых изделий
JP5551411B2 (ja) * 2009-11-06 2014-07-16 株式会社Ihi ケースの製造方法、及びケース
US8807931B2 (en) * 2010-01-04 2014-08-19 General Electric Company System for impact zone reinforcement
KR101713882B1 (ko) 2010-01-14 2017-03-09 센비온 게엠베하 윈드 터빈 로터 블레이드 컴포넌트 및 그것을 만드는 방법
US10137542B2 (en) 2010-01-14 2018-11-27 Senvion Gmbh Wind turbine rotor blade components and machine for making same
FR2957545B1 (fr) * 2010-03-19 2012-07-27 Snecma Procede de realisation d'un insert metallique pour la protection d'un bord d'attaque en materiau composite
US8500407B1 (en) * 2010-03-28 2013-08-06 The Boeing Company Composite blade root-end drill-through lug and attachment method
US8662847B2 (en) 2010-10-11 2014-03-04 Eurocopter Deutschland Gmbh Rotor blade with control tube
EP2619086B1 (en) * 2010-11-12 2014-03-19 Bell Helicopter Textron Inc. Composite rotor blade having weighted material for mass balancing
ES2403361B1 (es) * 2010-12-17 2014-04-29 Airbus Operations, S.L. Optimización de estructuras sometidas a corrientes de gases calientes.
JP5662566B2 (ja) 2011-04-26 2015-02-04 株式会社Ihi 成形部品
EP2599714B1 (en) 2011-11-30 2014-10-08 Hamilton Sundstrand Corporation Propeller blade having compliant adhesive at spar interface
CN102530015B (zh) * 2011-12-29 2016-01-20 上海庞丰交通设备科技有限公司 空气动力制动风翼板
EP2682256A1 (en) 2012-07-03 2014-01-08 Fiberline A/S A method of producing an assembly for use in a fibre reinforced structural element
CN102966565A (zh) * 2012-11-07 2013-03-13 无锡惠山泵业有限公司 气动水泵
US9845162B2 (en) * 2013-05-03 2017-12-19 The Boeing Company Protective finish for wing tip devices
US9682773B2 (en) 2013-06-25 2017-06-20 The Boeing Company Systems and methods for blade attachment
FR3007737B1 (fr) 2013-06-26 2017-07-14 Eurocopter France Pale a rigidite en torsion reduite et rotor muni d'une telle pale
US9709030B2 (en) * 2013-12-16 2017-07-18 General Electric Company Methods of manufacturing rotor blade components for a wind turbine
US9945389B2 (en) 2014-05-05 2018-04-17 Horton, Inc. Composite fan
US9895840B2 (en) * 2014-05-15 2018-02-20 The Boeing Company Thermoformed cascades for jet engine thrust reversers
WO2015183658A1 (en) * 2014-05-30 2015-12-03 Sikorsky Aircraft Corporation Structurally efficient pin wrap
DE102014220249A1 (de) 2014-10-07 2016-04-07 Wobben Properties Gmbh Rotorblatt einer Windenergieanlage
CN105329442B (zh) * 2015-11-16 2017-09-22 深圳市龙云创新航空科技有限公司 一种本体旋转的小型无人机
FR3051439B1 (fr) * 2016-05-17 2018-06-01 Airbus Helicopters Pale monolithique, rotor de giravion equipe d'une telle pale monolithique et giravion associe
US10618629B2 (en) 2016-08-09 2020-04-14 Gopro, Inc. Automated variable pitch propeller blade
JP6885168B2 (ja) * 2017-04-07 2021-06-09 株式会社Ihi ブレード
JP6885167B2 (ja) * 2017-04-07 2021-06-09 株式会社Ihi ブレード
GB2561851A (en) * 2017-04-25 2018-10-31 Airbus Operations Ltd Fibre reinforced composite aerofoil structures
US10823112B2 (en) 2017-05-25 2020-11-03 The Boeing Company Method for manufacturing and assembly of a thrust reverser cascade
JP6672233B2 (ja) * 2017-09-25 2020-03-25 三菱重工業株式会社 複合材翼の成形方法、複合材翼及び複合材翼の成形型
US10710712B2 (en) * 2018-03-26 2020-07-14 Bell Helicopter Textron Inc. Rotor blade afterbody
CN108657417A (zh) * 2018-05-21 2018-10-16 魏浩峰 一种无人机螺旋桨及其生产工艺
CN108757270B (zh) * 2018-07-10 2024-01-09 江苏新扬新材料股份有限公司 一体化成型复合材料桨叶结构
US11242140B2 (en) 2018-08-10 2022-02-08 Sikorsky Aircraft Corporation Method of removal and replacement of a tip section of a rotor blade
US11066188B2 (en) 2018-08-10 2021-07-20 Sikorsky Aircraft Corporation Method and apparatus for locating and forming fastener holes in a replacement tip section of a rotor blade
EP3659909B1 (en) * 2018-11-27 2023-03-22 Ratier-Figeac SAS Propeller blades
CN109624369B (zh) * 2018-12-07 2020-12-18 江苏新扬新材料股份有限公司 一种低温叶片的制备方法
BR112021025566A2 (pt) * 2019-06-20 2022-03-03 Galactic Co Llc Perfis compostos pultrudados integrados e método para fabricação dos mesmos
US11491686B2 (en) 2019-07-22 2022-11-08 The Boeing Company Compression molded cascades with two piece mold
CN110562450B (zh) * 2019-09-17 2021-07-13 深圳市中科金朗产业研究院有限公司 一种直升机旋翼结构及其制造方法
US11292578B2 (en) * 2019-11-14 2022-04-05 Spirit Aerosystems, Inc. Composite aerodynamic structure
FR3107300B1 (fr) * 2020-02-18 2022-07-08 Safran Aircraft Engines Pale composite pour rotor de turbomachine
US11946391B2 (en) 2021-03-11 2024-04-02 General Electric Company Turbine engine with composite airfoil having a non-metallic leading edge protective wrap
JPWO2022209454A1 (pt) * 2021-03-30 2022-10-06
CN112977815B (zh) * 2021-05-10 2021-08-27 北京三快在线科技有限公司 旋翼飞行器、旋翼飞行器的桨叶及其翼型
CN113370556A (zh) * 2021-06-10 2021-09-10 威驰腾(福建)汽车有限公司 真空成型覆皮方法
CN113459032A (zh) * 2021-07-27 2021-10-01 中航西安飞机工业集团股份有限公司 一种大尺寸复材壁板装配型架和装配方法
FR3127472A1 (fr) 2021-09-27 2023-03-31 Airbus Helicopters pale de rotor avec un système de rétention et de reprises d’efforts dissociés et rotor muni de telles pales
US20240003329A1 (en) * 2022-07-01 2024-01-04 Rohr, Inc. Composite thermoplastic rotor blade with integral cuff
CN115771610B (zh) * 2022-11-18 2025-06-13 中国直升机设计研究所 一种分叉区域高疲劳强度过渡段铺层及其使用方法
US11982205B1 (en) * 2022-12-28 2024-05-14 General Electric Company Airfoil having a spar assembly for a turbine engine
CN116697825A (zh) * 2023-06-07 2023-09-05 湖南弘辉科技有限公司 轻质高刚度复合材料折叠翼、其加工设备及其加工方法
FR3154441A1 (fr) * 2023-10-19 2025-04-25 Safran Aircraft Engines Dispositif de calage conique pour aube mobile et ensemble le comprenant
US12535009B1 (en) 2025-02-13 2026-01-27 General Electric Company Airfoil assembly

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2381662A1 (fr) * 1977-02-28 1978-09-22 Aerospatiale Pale, notamment pour un rotor d'helicoptere, et son procede de fabrication
FR2430354A1 (fr) * 1978-07-07 1980-02-01 Aerospatiale Helice multipale a pas variable d'un type simplifie
US4648921A (en) * 1980-10-02 1987-03-10 United Technologies Corporation Method of making fiber reinforced articles
DE3113079C2 (de) * 1981-04-01 1985-11-21 Messerschmitt-Bölkow-Blohm GmbH, 8000 München Aerodynamischer Groß-Flügel und Verfahren zu dessen Herstellung
US4470862A (en) * 1982-05-27 1984-09-11 United Technologies Corporation Manufacture of fiber reinforced articles
FR2542695B1 (fr) * 1983-03-18 1985-07-26 Aerospatiale Helice multipale a pas variable a pale s en materiaux composites demontables individuellement, procede de fabrication de telles pales et pales ainsi realisees
FR2574752B1 (fr) * 1984-12-19 1987-02-20 Aerospatiale Pale pour rotor d'helicoptere en materiau composite multilongeron a caissons de torsion et son procede de fabrication

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107061104A (zh) * 2017-06-12 2017-08-18 罗雪睿 一种双曲面尖齿状叶片水轮机转轮

Also Published As

Publication number Publication date
CN88103525A (zh) 1988-12-28
FR2616409A1 (fr) 1988-12-16
US4892462A (en) 1990-01-09
US4990205A (en) 1991-02-05
EP0296014B1 (fr) 1993-03-17
JPS6452595A (en) 1989-02-28
AU1742288A (en) 1988-12-15
AU615197B2 (en) 1991-09-26
CA1325627C (fr) 1993-12-28
EP0296014A1 (fr) 1988-12-21
JP2555152B2 (ja) 1996-11-20
DE3879287D1 (de) 1993-04-22
CN1019178B (zh) 1992-11-25
FR2616409B1 (fr) 1989-09-15
DE3879287T2 (de) 1993-09-02

Similar Documents

Publication Publication Date Title
BR8802797A (pt) Pa essencialmente em material composito,especialmente para uma helice de multiplas pas e seu processo de fabricacao
BR8803651A (pt) Folha sanduiche laminada em camadas multiplas,processo para a fabricacao da mesma e embalagem
BR8901945A (pt) Aparelho de limpeza de uma maquina colheitadeira para a medicao de perda de grao na maquina,e processo para a medicao de perda de graos em uma maquina colheitadeira
BR8906866A (pt) Composicao oral,dentifricio de composicao oral,processo para controlar a placa oral e preparacao oral
FI873262L (fi) Menetelmä vahvistettujen termoplastilaminaattien valmistamiseksi ja niistä valmistetut tuotteet
PT88732A (pt) Processo para a preparacao de uma folha metalica laminada e laminado produzido de acordo com esse processo
ES2012494B3 (es) Pala en material compuesto, para estructura bilarguero y bicaja y revestimientos estratificados en sandwich de nidos de abejas y su procedimiento de fabricacion.
BR8907680A (pt) Processo para temperar uma lamina de vidro e a respectiva lamina
BR8806508A (pt) Material termoplastico e artigo composito estrutural,processo de formacao dos mesmos,e processo para preparar artigos termoplasticos estruturais
BR8906744A (pt) Processo para substituir uma lamina em um rotor e para fabricar um rotor integralmente laminado
BR8200748A (pt) Pneumatico,por exemplo para avioes,e seu processo de fabricacao
BR8904867A (pt) Processo para fabricacao de uma estrutura composite rigida com uma superficie polimerica termoplastica;estrutura de folha composite;estrutura composite;composite;e estrutura de folha termoformavel
FI863786A7 (fi) Mikrosoluiset, energiapitoiset komposiittimateriaalit ja menetelmä niiden valmistamiseksi.
BR8403992A (pt) Composito em camadas flexiveis,laminado e processo para aplicar graficos a uma superficie de exposicao
BR8803663A (pt) Processo para moldar material em lamina passivel de ser amolecido por meio do calor;aparelhagem para moldar uma lamina de material como o vidro em uma forma predeterminada;e matriz de encurvamento de contorno
BR8704477A (pt) Barcaca conversivel,barcaca de assentamento e processo para a conversao de uma barcaca em uma barcaca de assentamento
PT90481A (pt) Processo de producao de laminado constituido por camadas texteis e folhas respiratorias
BR8705614A (pt) Composicao termoplastica processavel por fusao e processo para sua fabricacao
BR8905075A (pt) Processo para fabricar uma composicao de veiculo de barrilha peroxigenado e a composicao obtida
BR8801022A (pt) Material termoplastico reforcado e seu processo de fabricacao
BR8801569A (pt) Impressora e processo para controlar a mesma
BR9007558A (pt) Material laminado aperfeicoado e processo para sua producao
BR8701525A (pt) Particula polimerica de latex estruturada adequada para ser utilizada na preparacao de uma folha composita,e processo para a sua preparacao
BR8200747A (pt) Pneumatico,notadamente para avioes e seu processo de fabricacao
BR8900765A (pt) Torre de resfriamento em contracorrente aperfeicoada,processo aperfeicoado para conduzir ar atraves da mesma e folha de enchimento aperfeicoada para uma torre de resfriamento

Legal Events

Date Code Title Description
B21A Expiry acc. art. 78, item i of ipl- expiry of the term of protection

Free format text: PATENTE EXTINTA EM 08/06/2003