BR0100267A - Conector de fibra ótica removivelmente montado e adaptador associado - Google Patents

Conector de fibra ótica removivelmente montado e adaptador associado

Info

Publication number
BR0100267A
BR0100267A BR0100267-8A BR0100267A BR0100267A BR 0100267 A BR0100267 A BR 0100267A BR 0100267 A BR0100267 A BR 0100267A BR 0100267 A BR0100267 A BR 0100267A
Authority
BR
Brazil
Prior art keywords
removably mounted
fiber optic
optic connector
connector
associated adapter
Prior art date
Application number
BR0100267-8A
Other languages
English (en)
Inventor
Michael De Jong
Scott E Semmler
Original Assignee
Corning Cable Sys Llc
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 Corning Cable Sys Llc filed Critical Corning Cable Sys Llc
Publication of BR0100267A publication Critical patent/BR0100267A/pt

Links

Classifications

    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
    • G02B6/24—Coupling light guides
    • G02B6/36—Mechanical coupling means
    • G02B6/38—Mechanical coupling means having fibre to fibre mating means
    • G02B6/3801—Permanent connections, i.e. wherein fibres are kept aligned by mechanical means
    • G02B6/3806—Semi-permanent connections, i.e. wherein the mechanical means keeping the fibres aligned allow for removal of the fibres
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
    • G02B6/24—Coupling light guides
    • G02B6/36—Mechanical coupling means
    • G02B6/38—Mechanical coupling means having fibre to fibre mating means
    • G02B6/3807—Dismountable connectors, i.e. comprising plugs
    • G02B6/381—Dismountable connectors, i.e. comprising plugs of the ferrule type, e.g. fibre ends embedded in ferrules, connecting a pair of fibres
    • G02B6/3825—Dismountable connectors, i.e. comprising plugs of the ferrule type, e.g. fibre ends embedded in ferrules, connecting a pair of fibres with an intermediate part, e.g. adapter, receptacle, linking two plugs
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
    • G02B6/24—Coupling light guides
    • G02B6/36—Mechanical coupling means
    • G02B6/38—Mechanical coupling means having fibre to fibre mating means
    • G02B6/3807—Dismountable connectors, i.e. comprising plugs
    • G02B6/3833—Details of mounting fibres in ferrules; Assembly methods; Manufacture
    • G02B6/3846—Details of mounting fibres in ferrules; Assembly methods; Manufacture with fibre stubs
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
    • G02B6/24—Coupling light guides
    • G02B6/36—Mechanical coupling means
    • G02B6/38—Mechanical coupling means having fibre to fibre mating means
    • G02B6/3807—Dismountable connectors, i.e. comprising plugs
    • G02B6/3869—Mounting ferrules to connector body, i.e. plugs
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
    • G02B6/24—Coupling light guides
    • G02B6/36—Mechanical coupling means
    • G02B6/38—Mechanical coupling means having fibre to fibre mating means
    • G02B6/3807—Dismountable connectors, i.e. comprising plugs
    • G02B6/3873—Connectors using guide surfaces for aligning ferrule ends, e.g. tubes, sleeves, V-grooves, rods, pins, balls
    • G02B6/3885—Multicore or multichannel optical connectors, i.e. one single ferrule containing more than one fibre, e.g. ribbon type
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
    • G02B6/24—Coupling light guides
    • G02B6/36—Mechanical coupling means
    • G02B6/38—Mechanical coupling means having fibre to fibre mating means
    • G02B6/3807—Dismountable connectors, i.e. comprising plugs
    • G02B6/3833—Details of mounting fibres in ferrules; Assembly methods; Manufacture
    • G02B6/3834—Means for centering or aligning the light guide within the ferrule
    • G02B6/3838—Means for centering or aligning the light guide within the ferrule using grooves for light guides
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
    • G02B6/24—Coupling light guides
    • G02B6/36—Mechanical coupling means
    • G02B6/38—Mechanical coupling means having fibre to fibre mating means
    • G02B6/3807—Dismountable connectors, i.e. comprising plugs
    • G02B6/3873—Connectors using guide surfaces for aligning ferrule ends, e.g. tubes, sleeves, V-grooves, rods, pins, balls
    • G02B6/3882—Connectors using guide surfaces for aligning ferrule ends, e.g. tubes, sleeves, V-grooves, rods, pins, balls using rods, pins or balls to align a pair of ferrule ends
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
    • G02B6/24—Coupling light guides
    • G02B6/36—Mechanical coupling means
    • G02B6/38—Mechanical coupling means having fibre to fibre mating means
    • G02B6/3807—Dismountable connectors, i.e. comprising plugs
    • G02B6/3887—Anchoring optical cables to connector housings, e.g. strain relief features
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
    • G02B6/24—Coupling light guides
    • G02B6/36—Mechanical coupling means
    • G02B6/38—Mechanical coupling means having fibre to fibre mating means
    • G02B6/3807—Dismountable connectors, i.e. comprising plugs
    • G02B6/389—Dismountable connectors, i.e. comprising plugs characterised by the method of fastening connecting plugs and sockets, e.g. screw- or nut-lock, snap-in, bayonet type
    • G02B6/3893—Push-pull type, e.g. snap-in, push-on
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
    • G02B6/24—Coupling light guides
    • G02B6/36—Mechanical coupling means
    • G02B6/38—Mechanical coupling means having fibre to fibre mating means
    • G02B6/3807—Dismountable connectors, i.e. comprising plugs
    • G02B6/3897—Connectors fixed to housings, casing, frames or circuit boards

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Mechanical Coupling Of Light Guides (AREA)
  • Processing Of Terminals (AREA)

Abstract

Patente de Invenção <B>"CONECTOR DE FIBRA óTICA REMOVIVELMENTE MONTADO E ADAPTADOR ASSOCIADO"<D>, caracterizado pelo fato de compreender um conector de fibra ótica que é provido para utilização em fibra para aplicações de escrivaninha. O conector de acordo com a presente invenção, inclui um alojamento principal com uma passagem através do mesmo, um conjunto de virolas ou barras de fixação montáveis no alojamento principal, e um membro de tala ou barra. O conector também inclui um fecho sobre pelo menos uma superfície externa do alojamento principal para engatar uma estrutura correspondente em uma luva do adaptador.
BR0100267-8A 2000-01-14 2001-01-10 Conector de fibra ótica removivelmente montado e adaptador associado BR0100267A (pt)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US09/483,250 US6379052B1 (en) 1999-05-12 2000-01-14 Removably mounted fiber optic connector and associated adapter

Publications (1)

Publication Number Publication Date
BR0100267A true BR0100267A (pt) 2001-08-21

Family

ID=23919313

Family Applications (1)

Application Number Title Priority Date Filing Date
BR0100267-8A BR0100267A (pt) 2000-01-14 2001-01-10 Conector de fibra ótica removivelmente montado e adaptador associado

Country Status (6)

Country Link
US (1) US6379052B1 (pt)
EP (1) EP1116974A3 (pt)
JP (1) JP2001215361A (pt)
AR (1) AR029218A1 (pt)
BR (1) BR0100267A (pt)
CA (1) CA2327007A1 (pt)

Families Citing this family (77)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7056157B2 (en) * 2000-05-26 2006-06-06 Hubbell Incorporated Adapter for data transmission systems
AUPS120702A0 (en) * 2002-03-18 2002-04-18 Kingfisher International Pty. Ltd. An optical fibre connector system
US6848838B2 (en) * 2002-09-19 2005-02-01 3M Innovative Properties Company Optical fiber plug
US6816662B2 (en) 2002-09-19 2004-11-09 3M Innovative Properties Company Article for cleaving and polishing optical fiber ends
US6870996B2 (en) * 2002-09-19 2005-03-22 3M Innovative Properties Company Optical fiber plug including fiber positioning holder
US20040062488A1 (en) * 2002-09-26 2004-04-01 Charles Wood Fiber optic adapter sleeve
DE10342908A1 (de) * 2003-09-17 2005-04-28 Krone Gmbh Gehäuse für Glasfaser- Steckverbinder und Verfahren zum Verlegen von Glasfaserkabeln
US7192194B2 (en) * 2005-01-13 2007-03-20 Frank Giotto Universal adapter for fiber optic connectors
TWM278133U (en) * 2005-04-14 2005-10-11 John Peng Shielded waterproof connector
US11294135B2 (en) 2008-08-29 2022-04-05 Corning Optical Communications LLC High density and bandwidth fiber optic apparatuses and related equipment and methods
US8452148B2 (en) 2008-08-29 2013-05-28 Corning Cable Systems Llc Independently translatable modules and fiber optic equipment trays in fiber optic equipment
EP2221932B1 (en) 2009-02-24 2011-11-16 CCS Technology Inc. Holding device for a cable or an assembly for use with a cable
US8699838B2 (en) 2009-05-14 2014-04-15 Ccs Technology, Inc. Fiber optic furcation module
US9075216B2 (en) 2009-05-21 2015-07-07 Corning Cable Systems Llc Fiber optic housings configured to accommodate fiber optic modules/cassettes and fiber optic panels, and related components and methods
US8538226B2 (en) 2009-05-21 2013-09-17 Corning Cable Systems Llc Fiber optic equipment guides and rails configured with stopping position(s), and related equipment and methods
EP2443497B1 (en) 2009-06-19 2020-03-04 Corning Cable Systems LLC High density and bandwidth fiber optic apparatus
US8712206B2 (en) 2009-06-19 2014-04-29 Corning Cable Systems Llc High-density fiber optic modules and module housings and related equipment
US8625950B2 (en) 2009-12-18 2014-01-07 Corning Cable Systems Llc Rotary locking apparatus for fiber optic equipment trays and related methods
US8593828B2 (en) 2010-02-04 2013-11-26 Corning Cable Systems Llc Communications equipment housings, assemblies, and related alignment features and methods
US8913866B2 (en) 2010-03-26 2014-12-16 Corning Cable Systems Llc Movable adapter panel
EP2558895B1 (en) 2010-04-16 2019-04-17 Corning Optical Communications LLC Sealing and strain relief device for data cables
EP2381284B1 (en) 2010-04-23 2014-12-31 CCS Technology Inc. Under floor fiber optic distribution device
US8660397B2 (en) 2010-04-30 2014-02-25 Corning Cable Systems Llc Multi-layer module
US8879881B2 (en) 2010-04-30 2014-11-04 Corning Cable Systems Llc Rotatable routing guide and assembly
US9632270B2 (en) 2010-04-30 2017-04-25 Corning Optical Communications LLC Fiber optic housings configured for tool-less assembly, and related components and methods
US9720195B2 (en) 2010-04-30 2017-08-01 Corning Optical Communications LLC Apparatuses and related components and methods for attachment and release of fiber optic housings to and from an equipment rack
US9519118B2 (en) 2010-04-30 2016-12-13 Corning Optical Communications LLC Removable fiber management sections for fiber optic housings, and related components and methods
US8705926B2 (en) 2010-04-30 2014-04-22 Corning Optical Communications LLC Fiber optic housings having a removable top, and related components and methods
US9075217B2 (en) 2010-04-30 2015-07-07 Corning Cable Systems Llc Apparatuses and related components and methods for expanding capacity of fiber optic housings
JP5471801B2 (ja) * 2010-05-13 2014-04-16 住友電気工業株式会社 光データリンク
US8718436B2 (en) 2010-08-30 2014-05-06 Corning Cable Systems Llc Methods, apparatuses for providing secure fiber optic connections
US9279951B2 (en) 2010-10-27 2016-03-08 Corning Cable Systems Llc Fiber optic module for limited space applications having a partially sealed module sub-assembly
US8662760B2 (en) * 2010-10-29 2014-03-04 Corning Cable Systems Llc Fiber optic connector employing optical fiber guide member
US9116324B2 (en) 2010-10-29 2015-08-25 Corning Cable Systems Llc Stacked fiber optic modules and fiber optic equipment configured to support stacked fiber optic modules
AU2011336747A1 (en) 2010-11-30 2013-06-20 Corning Cable Systems Llc Fiber device holder and strain relief device
WO2012106518A2 (en) 2011-02-02 2012-08-09 Corning Cable Systems Llc Optical backplane extension modules, and related assemblies suitable for establishing optical connections to information processing modules disposed in equipment racks
EP2685299B1 (en) * 2011-03-09 2023-05-10 The Furukawa Electric Co., Ltd. Optical connector, method for aligning multi-core fiber and bundle structure, and fiber arrangement conversion member
US9008485B2 (en) 2011-05-09 2015-04-14 Corning Cable Systems Llc Attachment mechanisms employed to attach a rear housing section to a fiber optic housing, and related assemblies and methods
WO2013003303A1 (en) 2011-06-30 2013-01-03 Corning Cable Systems Llc Fiber optic equipment assemblies employing non-u-width-sized housings and related methods
CN102928931B (zh) * 2011-08-11 2015-02-04 鸿富锦精密工业（深圳）有限公司 光纤连接器及其安装工具
US8953924B2 (en) 2011-09-02 2015-02-10 Corning Cable Systems Llc Removable strain relief brackets for securing fiber optic cables and/or optical fibers to fiber optic equipment, and related assemblies and methods
JP5390582B2 (ja) * 2011-11-25 2014-01-15 三和電気工業株式会社 光コンセント
US9038832B2 (en) 2011-11-30 2015-05-26 Corning Cable Systems Llc Adapter panel support assembly
US9250409B2 (en) 2012-07-02 2016-02-02 Corning Cable Systems Llc Fiber-optic-module trays and drawers for fiber-optic equipment
US9042702B2 (en) 2012-09-18 2015-05-26 Corning Cable Systems Llc Platforms and systems for fiber optic cable attachment
EP2725397B1 (en) 2012-10-26 2015-07-29 CCS Technology, Inc. Fiber optic management unit and fiber optic distribution device
US8985862B2 (en) 2013-02-28 2015-03-24 Corning Cable Systems Llc High-density multi-fiber adapter housings
US9618702B2 (en) 2014-06-09 2017-04-11 Senko Advanced Components, Inc. Reduced-profile data transmission element connectors, adapters, and connection assemblies thereof
CN111239919A (zh) * 2014-06-09 2020-06-05 扇港元器件有限公司 减小轮廓的连接组件
US9494744B2 (en) 2014-11-10 2016-11-15 Corning Optical Communications LLC Fiber optic connector having a main connector body and a plurality of removable sub-connectors
US9810861B2 (en) * 2014-12-19 2017-11-07 3M Innovative Properties Company Ruggedized optical fiber connection structures and assemblies
US9726830B1 (en) 2016-06-28 2017-08-08 Senko Advanced Components, Inc. Connector and adapter system for two-fiber mechanical transfer type ferrule
EP3574356A4 (en) * 2017-01-30 2020-08-19 Senko Advanced Components Inc. OPTICAL CONNECTORS WITH REVERSIBLE POLARITY
US10444444B2 (en) 2017-01-30 2019-10-15 Senko Advanced Components, Inc. Remote release tab connector assembly
US12001064B2 (en) 2017-07-14 2024-06-04 Senko Advanced Components, Inc. Small form factor fiber optic connector with multi-purpose boot
US11822133B2 (en) 2017-07-14 2023-11-21 Senko Advanced Components, Inc. Ultra-small form factor optical connector and adapter
US10281669B2 (en) 2017-07-14 2019-05-07 Senko Advance Components, Inc. Ultra-small form factor optical connectors
US10718911B2 (en) 2017-08-24 2020-07-21 Senko Advanced Components, Inc. Ultra-small form factor optical connectors using a push-pull boot receptacle release
JP2019086572A (ja) * 2017-11-02 2019-06-06 株式会社フジクラ 光コネクタ、把持部材、及び、光コネクタの製造方法
US11002923B2 (en) 2017-11-21 2021-05-11 Senko Advanced Components, Inc. Fiber optic connector with cable boot release having a two-piece clip assembly
CN112292230A (zh) 2018-03-19 2021-01-29 扇港元器件股份有限公司 用于从适配器接口移除多个微型光学连接器的移除工具
CN111033339B (zh) 2018-03-28 2023-09-19 扇港元器件股份有限公司 光纤连接器
CN112088327A (zh) 2018-07-15 2020-12-15 扇港元器件股份有限公司 超小型光学连接器和适配器
WO2020036992A1 (en) * 2018-08-13 2020-02-20 Senko Advanced Components, Inc A cable boot assembly for releasing fiber optic connector from a receptacle
US10921531B2 (en) 2018-09-12 2021-02-16 Senko Advanced Components, Inc. LC type connector with push/pull assembly for releasing connector from a receptacle using a cable boot
US10921530B2 (en) 2018-09-12 2021-02-16 Senko Advanced Components, Inc. LC type connector with push/pull assembly for releasing connector from a receptacle using a cable boot
CN112955797B (zh) 2018-09-12 2022-11-11 扇港元器件股份有限公司 具有用于利用缆线护套将连接器从插座释放的夹式推/拉舌片的lc型连接器
US11806831B2 (en) 2018-11-21 2023-11-07 Senko Advanced Components, Inc. Fixture and method for polishing fiber optic connector ferrules
US11175464B2 (en) 2018-11-25 2021-11-16 Senko Advanced Components, Inc. Open ended spring body for use in an optical fiber connector
WO2020198755A1 (en) 2019-03-28 2020-10-01 Senko Advanced Components, Inc Fiber optic adapter assembly
US12038613B2 (en) 2019-03-28 2024-07-16 Senko Advanced Components, Inc. Behind-the-wall optical connector and assembly of the same
US11340406B2 (en) 2019-04-19 2022-05-24 Senko Advanced Components, Inc. Small form factor fiber optic connector with resilient latching mechanism for securing within a hook-less receptacle
CN114026480B (zh) 2019-06-13 2023-05-26 扇港元器件有限公司 用于从插座端口释放光纤连接器的杆驱动闩锁臂和使用方法
CN114600018B (zh) 2019-07-23 2024-04-09 扇港元器件有限公司 用于接收与插芯组件相对的光纤连接器的超小型插座
US10782500B1 (en) 2019-10-25 2020-09-22 Afl Telecommunications Llc Fiber optic furcation units, kits, and methods
GB2589365B (en) * 2019-11-28 2023-11-15 Ridgemount Tech Limited Fibre optic connector
JP7526637B2 (ja) 2020-10-20 2024-08-01 株式会社フジクラ 光コネクタおよび光コネクタの製造方法

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4291943A (en) * 1977-08-05 1981-09-29 Minnesota Mining And Manufacturing Company Connector for optical fiber cables
US4233724A (en) * 1979-04-20 1980-11-18 Amp Incorporated Method of accurately positioning fiber cables within ferrules
EP0743543A3 (en) * 1991-03-01 1997-08-13 Whitaker Corp Optical waveguide termination device
JPH09318841A (ja) * 1996-05-28 1997-12-12 Kel Corp 光ファイバ用コネクタ
US5862289A (en) * 1997-02-18 1999-01-19 Amphenol Corporation Adhesiveless fiber optic connector, and an apparatus and method for terminating a fiber optic cable to an adhesiveless fiber optic connector
US6173097B1 (en) * 1998-07-01 2001-01-09 Siecor Operations, Llc Field installable multifiber connector
US6623172B1 (en) * 1999-05-12 2003-09-23 Corning Cable Systems Llc Removably mounted fiber optic connector and associated adapter

Also Published As

Publication number Publication date
AR029218A1 (es) 2003-06-18
EP1116974A2 (en) 2001-07-18
US6379052B1 (en) 2002-04-30
JP2001215361A (ja) 2001-08-10
EP1116974A3 (en) 2004-05-12
CA2327007A1 (en) 2001-07-14

Similar Documents

Publication Publication Date Title
BR0100267A (pt) Conector de fibra ótica removivelmente montado e adaptador associado
BR0003504A (pt) Conector de fibras opticas montado de forma removivel, e adaptador correspondente
BR0011423A (pt) Detentor para fibras ópticas
BR0001214A (pt) Luva conectora para fibras ópticas
PT1502142E (pt) Dispositivo de ligacao por fibra optica
BR0202302A (pt) Conector de fibra ótica e um retentor de pino associado
AR029060A1 (es) Conectador duplex para conectadores por enchufe de fibra de vidrio
BR0009342A (pt) Montagem de adaptador de iluminador de fibra óptica para conectores de guia de luz múltiplos
ATE298430T1 (de) Einrichtung zur ausrichtung faseroptischer verbinder
BR0107927A (pt) Linha e método de transmissão de fibra óptica compósita
MX9304583A (es) Fibra optica que tiene una dispersion de modo de baja polarizacion, metodo para su fabricacion y articulo que la incluye.
ATE161308T1 (de) Verbindungshaken
BR9404890A (pt) Mecanismo de tranca para conector de fibra ótica
GB2431730A (en) Flat optical fiber light emitters
MY169566A (en) Microscope drape lens cover system and assembly method
BR9915563A (pt) Adaptador de fibra óptica, que inclui sistema de conector hìbrido
DE60011148D1 (de) Faseroptische verbindungsvorrichtung zur verbindung von bauteilen auf sich schneidenden ebenen
WO2005119319A3 (en) Adapter for coupling an external post connector or a bnc connector to an sma bushing
BR0300003A (pt) Conector ótico de fibra, e, métodos para montar o mesmo, e para terminar uma fibra ótica de campo em multicamada
BR9707291A (pt) Dispositivo óptico e aparelho de comunicação óptica.
BR9811141A (pt) Fibra de guia deonda ótica de modo simples de compensação de dispersão
BR0008415A (pt) Fibra de multimodo otimizada de laser e método para uso com fontes de laser e led e sistema empregando a mesma
DE50210456D1 (de) Faseroptisches steckverbindersystem
BR9904656A (pt) Conjunto de luva de conexão e painel para estruturas de distribuição óptica
ATE331966T1 (de) Reversible steckerhülse mit einer abbrechbaren lasche

Legal Events

Date Code Title Description
B11A Dismissal acc. art.33 of ipl - examination not requested within 36 months of filing
B11Y Definitive dismissal - extension of time limit for request of examination expired [chapter 11.1.1 patent gazette]