ES2190939T3 - Acoplamiento mejorado para conducto de fluido. - Google Patents

Acoplamiento mejorado para conducto de fluido.

Info

Publication number
ES2190939T3
ES2190939T3 ES00204329T ES00204329T ES2190939T3 ES 2190939 T3 ES2190939 T3 ES 2190939T3 ES 00204329 T ES00204329 T ES 00204329T ES 00204329 T ES00204329 T ES 00204329T ES 2190939 T3 ES2190939 T3 ES 2190939T3
Authority
ES
Spain
Prior art keywords
locking
coupling halves
pair
tine
arcuate
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
ES00204329T
Other languages
English (en)
Inventor
Todd A Eyster
Albert B Olsen
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.)
Stanley Aviation Corp
Original Assignee
Stanley Aviation Corp
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 Stanley Aviation Corp filed Critical Stanley Aviation Corp
Application granted granted Critical
Publication of ES2190939T3 publication Critical patent/ES2190939T3/es
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16LPIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L23/00Flanged joints
    • F16L23/04Flanged joints the flanges being connected by members tensioned in the radial plane
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16LPIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L21/00Joints with sleeve or socket
    • F16L21/06Joints with sleeve or socket with a divided sleeve or ring clamping around the pipe ends
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16LPIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L21/00Joints with sleeve or socket
    • F16L21/08Joints with sleeve or socket with additional locking means
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16LPIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L25/00Construction or details of pipe joints not provided for in, or of interest apart from, groups F16L13/00 - F16L23/00
    • F16L25/01Construction or details of pipe joints not provided for in, or of interest apart from, groups F16L13/00 - F16L23/00 specially adapted for realising electrical conduction between the two pipe ends of the joint or between parts thereof
    • 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
    • Y10STECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S285/00Pipe joints or couplings
    • Y10S285/921Snap-fit
    • 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
    • Y10T24/00Buckles, buttons, clasps, etc.
    • Y10T24/45Separable-fastener or required component thereof [e.g., projection and cavity to complete interlock]
    • Y10T24/45225Separable-fastener or required component thereof [e.g., projection and cavity to complete interlock] including member having distinct formations and mating member selectively interlocking therewith
    • Y10T24/45471Projection having movable connection between components thereof or variable configuration
    • Y10T24/45524Projection having movable connection between components thereof or variable configuration including resiliently biased projection component or surface segment
    • Y10T24/45545Projection having movable connection between components thereof or variable configuration including resiliently biased projection component or surface segment forming total external surface of projection
    • Y10T24/45581Projection having movable connection between components thereof or variable configuration including resiliently biased projection component or surface segment forming total external surface of projection having inserted end formed by oppositely biased surface segments

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Quick-Acting Or Multi-Walled Pipe Joints (AREA)
  • Ultra Sonic Daignosis Equipment (AREA)
  • Error Detection And Correction (AREA)
  • Measurement Of Velocity Or Position Using Acoustic Or Ultrasonic Waves (AREA)
  • Extraction Or Liquid Replacement (AREA)

Abstract

Un conjunto de acoplamiento (A) para interconectar de modo liberable pestañas anulares primera y segunda (26, 28) en respectivos extremos enfrentados de miembros de conducto que llevan fluido primero y segundo (22, 24), en que dicho conjunto de acoplamiento (A) incluye un par de mitades del acoplamiento arqueadas (2, 4) unidas a pivotamiento juntas en primeros extremos adyacentes para rodear circunferencialmente a dichos extremos enfrentados y que cada una incluye una pared circunferencial arqueada (15, 19) que tiene un grosor y un par de nervios espaciados (16, 17 y 20, 20¿) que se extienden hacia dentro desde los bordes circunferenciales opuestos de la misma, al menos un canal de bloqueo longitudinal en la superficie exterior del extremo opuesto de una de dichas mitades del acoplamiento (4), y un par de púas de bloqueo elásticas (48, 50) que se extienden longitudinalmente desde la superficie exterior del extremo opuesto de la otra de las mitades del acoplamiento (2), siendo dichas púas debloqueo (48, 50) susceptibles de ser dobladas cada una hacia la otra para ser recibidas dentro de dicho canal de bloqueo, y teniendo cada una un borde exterior (54, 58) con un radio, de modo que cada lado interior de dicho canal de bloqueo hace contacto con cada uno de dichos bordes exteriores (54, 58) de dichas púas de bloqueo respectivas (48, 50) durante el cierre y la liberación, y que cada una incluye además una superficie de bloqueo (68, 70) que salta a aplicación con las superficies de bloqueo (72, 74) de dicho canal de bloqueo para retener de modo liberable dichas mitades del acoplamiento (2, 4) en posición de cerradas alrededor de dichos extremos enfrentados, caracterizado por: una abertura de visor (14) que se extiende a través de dicha pared circunferencial (15) arqueada de una de dicho par de mitades del acoplamiento arqueada (2) desde el exterior al interior, teniendo dicha abertura de visor (14) un par de rebajos (118) formados opuestos entre sí adyacentes al interior de la misma; un puente de conexión (B) que tiene un elemento anular (104) susceptible de ser situada sobre dicho lado exterior de dicha pared circunferencial (15) que tiene un borde exterior y un borde interior, teniendo dicho borde interior un diámetro sustancialmente idéntico al de dicha abertura de visor (14), un par de dientes centrales (120) situados en oposición sobre y pendientes de dicho borde interior, teniendo dichos dientes (120) labios vueltos hacia fuera (122) susceptibles de aplicación respectivamente con dicho par de rebajos (118), teniendo además dicho puente de conexión (B) un par de brazos (106, 108) que se extienden en sentidos opuestos, teniendo cada uno de dichos brazos (106, 108) un extremo que pende (112, 116) susceptible de aplicación respectivamente con dichas pestañas anulares primera y segunda (16, 17).
ES00204329T 1995-10-24 1996-10-22 Acoplamiento mejorado para conducto de fluido. Expired - Lifetime ES2190939T3 (es)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US08/547,647 US5620210A (en) 1995-10-24 1995-10-24 Fluid conduit coupling

Publications (1)

Publication Number Publication Date
ES2190939T3 true ES2190939T3 (es) 2003-09-01

Family

ID=24185530

Family Applications (2)

Application Number Title Priority Date Filing Date
ES00204329T Expired - Lifetime ES2190939T3 (es) 1995-10-24 1996-10-22 Acoplamiento mejorado para conducto de fluido.
ES96937712T Expired - Lifetime ES2165527T3 (es) 1995-10-24 1996-10-22 Acoplamiento mejorado para conductos de fluido.

Family Applications After (1)

Application Number Title Priority Date Filing Date
ES96937712T Expired - Lifetime ES2165527T3 (es) 1995-10-24 1996-10-22 Acoplamiento mejorado para conductos de fluido.

Country Status (7)

Country Link
US (1) US5620210A (es)
EP (2) EP1092905B1 (es)
AT (1) ATE205586T1 (es)
BR (1) BR9611702A (es)
DE (2) DE69627217T2 (es)
ES (2) ES2190939T3 (es)
WO (1) WO1997015778A1 (es)

Families Citing this family (73)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6015298A (en) * 1998-06-09 2000-01-18 Truplast Konststofftechnik Gmbh Vacuum-cleaner hose with electrical conductors
US6908123B2 (en) * 2000-10-27 2005-06-21 Fluidmaster, Inc. Bayonet quick coupler
DE10134154A1 (de) * 2001-07-13 2003-01-30 Knorr Bremse Systeme Verschlussanordnung für pneumatische/hydraulische Membranaktoren
US6672628B2 (en) 2002-02-20 2004-01-06 Masco Corporation Of Indiana Quick connect hose coupling
SE524585C2 (sv) * 2002-03-04 2004-08-31 Aba Sweden Ab Kopplingsanordning för rör innefattande två ledbara halvor
US6913294B2 (en) 2002-11-14 2005-07-05 Halla Climate Control Canada, Inc. Coupling for coaxial connection of fluid conduits
US6883836B2 (en) 2003-01-17 2005-04-26 Stanley Aviation Corporation Positive locking fitting assembly
US6971682B2 (en) * 2003-04-15 2005-12-06 Adel Wiggins Group, Transdigm, Inc. Coupling assembly
US20040244149A1 (en) * 2003-06-04 2004-12-09 Joseph Anscher Hinge
US6880859B2 (en) 2003-07-31 2005-04-19 Stanley Aviation Corporation Conduit coupling assembly
US7144047B2 (en) * 2003-12-10 2006-12-05 Victaulic Company Flexible pipe coupling
US7425146B2 (en) * 2006-03-06 2008-09-16 Hubbell Incorporated Lock-on boot
AU2008234410B2 (en) * 2007-03-30 2012-06-07 Sun Chan Conduit joining apparatus
US20090091126A1 (en) * 2007-10-04 2009-04-09 Carns James A Shrouded coupling assemblies for conduits
US20090096209A1 (en) * 2007-10-10 2009-04-16 Transdigm, Inc., Flexible, self-bonding coupling assembly
US9360144B2 (en) * 2007-10-22 2016-06-07 The Boeing Company Conduit with joint covered by a boot
US7942452B2 (en) * 2007-11-20 2011-05-17 The Boeing Company Flange fitting with leak sensor port
US7845952B2 (en) * 2008-05-12 2010-12-07 Thomas & Betts International, Inc. Detachable magnetic ground strap assembly
US8075024B2 (en) * 2008-06-30 2011-12-13 Eaton Corporation Coupling assembly
US20100089494A1 (en) * 2008-10-14 2010-04-15 Pam Brady Container coupler
US8356390B2 (en) * 2009-12-16 2013-01-22 Eaton Corporation Coupling clamping system
US8360477B2 (en) * 2009-12-18 2013-01-29 Eaton Corporation Compliant conduit connector
JP5360498B2 (ja) * 2010-01-27 2013-12-04 株式会社ニフコ クランプ
US20120011640A1 (en) * 2010-07-13 2012-01-19 Ykk Corporation Of America Releasable Clips
US20120011686A1 (en) * 2010-07-13 2012-01-19 Ykk Corporation Of America Releasable Clips
FR2974613B1 (fr) * 2011-04-26 2014-04-11 In Flex Dispositif d'accouplement pour relier de maniere liberable deux tubes.
CN202419053U (zh) * 2012-02-16 2012-09-05 舞阳县龙田精密仪器有限责任公司 快速夹紧装置
US9688419B2 (en) 2012-06-08 2017-06-27 The Boeing Company Composite tubes for a fluid transport system
US9145993B1 (en) * 2012-10-22 2015-09-29 The Boeing Company Non-metallic fluid coupling assemblies
WO2014143501A1 (en) 2013-03-13 2014-09-18 Eaton Corporation Concentric slide clamshell coupler
WO2014172370A1 (en) 2013-04-16 2014-10-23 Eaton Corporation Bonding clip for fluid conduit coupling
US9261211B2 (en) 2013-10-11 2016-02-16 Eaton Corporation Latching mechanisms for clamshell type couplers
US11338951B1 (en) 2014-04-07 2022-05-24 Billy Don Hinkle Bag holder clamp and Method
US10550977B1 (en) 2014-04-07 2020-02-04 Billy Don Hinkle Overcenter pipe clamp and method for lay flat tubing
US20150285419A1 (en) * 2014-04-07 2015-10-08 Billy Don Hinkle Overcenter pipe clamp and method for lay flat tubing
US10563798B1 (en) 2014-04-07 2020-02-18 Billy Don Hinkle Compactable pipe T for poly irrigation tubing
US11092269B2 (en) * 2014-05-30 2021-08-17 Oetiker Ny, Inc. Fluid connector with full insertion assurance cap with secondary latches
NL2013396B1 (nl) * 2014-09-01 2016-09-26 Visser Jacob Werkwijze en inrichting voor het elektrisch verbinden van een flenskoppeling.
CN104868424B (zh) * 2015-04-20 2018-02-27 国网辽宁省电力有限公司鞍山供电公司 用于10kV电力架空线路的立式绝缘子棘扣及使用方法
GB2548559A (en) 2016-03-17 2017-09-27 Eaton Ltd Aircraft fluid line coupling assembly for releasably interconnecting fluid conveying members
JP6695222B2 (ja) * 2016-06-30 2020-05-20 Ckd株式会社 流体機器接続構造
US10512218B2 (en) * 2016-08-25 2019-12-24 Bruce Fullerton Mower having collection system with quick connect vacuum hose adapter
AU201715625S (en) * 2017-03-16 2017-10-11 Bio Pure Tech Limited Clamp with tamper evident cover
KR101934289B1 (ko) * 2017-04-14 2019-01-03 엠에스인텍(주) 개폐식 선반 고정클램프
US11054069B1 (en) 2017-04-25 2021-07-06 Billy Don Hinkle Compactable pipe T for poly irrigation tubing
USD859136S1 (en) * 2017-07-31 2019-09-10 Ge Healthcare Bio-Sciences Corp. Tubing clamp
USD859970S1 (en) * 2017-07-31 2019-09-17 Ge Healthcare Bio-Sciences Corp. Tubing clamp
USD867867S1 (en) * 2017-07-31 2019-11-26 Ge Healthcare Bio-Sciences Corp. Tubing clamp
USD859137S1 (en) * 2017-07-31 2019-09-10 Ge Healthcare Bio-Sciences Corp. Tubing clamp
USD858264S1 (en) * 2017-07-31 2019-09-03 Ge Healthcare Bio-Sciences Corp. Tubing clamp
USD865507S1 (en) * 2017-07-31 2019-11-05 Ge Healthcare Bio-Sciences Corp. Tubing clamp
USD858265S1 (en) * 2017-07-31 2019-09-03 Ge Healthcare Bio-Sciences Corp. Tubing clamp
USD867119S1 (en) * 2017-07-31 2019-11-19 Ge Healthcare Bio-Sciences Corp. Tubing clamp
USD859971S1 (en) * 2017-07-31 2019-09-17 Ge Healthcare Bio-Sciences Corp. Tubing clamp
USD856123S1 (en) * 2017-08-08 2019-08-13 Victaulic Company Coupling
FR3074557B1 (fr) * 2017-12-01 2019-11-29 Airbus Operations Dispositif de maintien d'au moins un isolant sur un conduit, conduit equipe dudit dispositif de maintien
KR102010373B1 (ko) * 2017-12-13 2019-08-13 엠에스인텍(주) 개폐식 고정클램프가 구비된 선반
FR3075307B1 (fr) 2017-12-20 2021-02-19 Airbus Operations Sas Dispositif de fixation
KR102010372B1 (ko) * 2017-12-22 2019-10-21 엠에스인텍(주) 개폐식 고정클램프가 구비된 다용도 선반
USD861473S1 (en) * 2018-04-11 2019-10-01 Victaulic Company Pipe coupling
CN109185291B (zh) * 2018-08-28 2020-12-29 中航光电科技股份有限公司 一种具有冗余设计的三锁扣卡箍锁紧机构
US11183795B2 (en) * 2018-11-05 2021-11-23 Alpha/Omega Energy Solutions, LLC Three-phase electrical connector securing apparatus with flexible inserts
US20220006229A1 (en) * 2018-11-15 2022-01-06 Molex, Llc Waterproof electrical connector
US10651572B1 (en) * 2019-06-10 2020-05-12 Meter Technology Werks, LLC Bonding jumper system
JP7372075B2 (ja) * 2019-08-07 2023-10-31 日本ピラー工業株式会社 連結部材
US11286015B2 (en) * 2020-02-24 2022-03-29 Kimpex Inc. Accessory mounting system for a vehicle and method for using the same
US11608917B2 (en) * 2020-03-09 2023-03-21 AdelWiggins Group, a Division of Transdigm Inc. Non-metallic fluid coupling
WO2022031791A1 (en) * 2020-08-04 2022-02-10 Micropen Technologies Corporation Fluid conduit assemblies and fluid transport systems
JP7431416B2 (ja) * 2021-06-17 2024-02-15 淀川ヒューテック株式会社 流体機器連結具及び流体機器連結構造
CA221886S (en) * 2022-12-01 2024-08-22 Kibosh Ltd Pipe clamp
USD1105422S1 (en) * 2024-02-09 2025-12-09 Icu Medical, Inc. Medical connector cover
US12467569B1 (en) 2024-05-08 2025-11-11 TripleEight LLC Automatic locking quick release mechanisms
CN120027299A (zh) * 2025-03-07 2025-05-23 优口净水科技集团(广东)有限公司 一种工业反渗透净水设备的管道免焊结构

Family Cites Families (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3181189A (en) * 1963-05-27 1965-05-04 Riviera Appliance Corp Power operated toothbrush
US4008937A (en) * 1974-09-20 1977-02-22 Stanley Aviation Corporation Coupling assembly
US4150464A (en) * 1977-08-10 1979-04-24 Illinois Tool Works Inc. Buckle
US4346428A (en) * 1980-06-05 1982-08-24 Stanley Aviation Corp. Coupling assembly with bonding jumper
US4534090A (en) * 1981-09-21 1985-08-13 Max Skobel Releasable clasp
GB2117038B (en) * 1982-03-23 1985-09-04 Nippon Notion Kogyo Buckle
JPS59177312U (ja) * 1983-05-13 1984-11-27 日本ノ−シヨン工業株式会社 バツクル
US4621840A (en) * 1983-10-31 1986-11-11 Stanley Aviation Corporation Self-locking, selectively releasable mechanism for locking structural parts together with load relieving retention
JPS6129604U (ja) * 1984-07-27 1986-02-22 日本ノ−シヨン工業株式会社 バツクル
US4712280A (en) * 1985-04-26 1987-12-15 Gerhard Fildan Strap fastener
NZ216292A (en) * 1985-06-03 1988-09-29 Deutsher Pty Ltd Strap buckle
US4699403A (en) * 1985-10-17 1987-10-13 Imo Delaval Inc. Self-contained connectors for standard tubes
US4688337A (en) * 1985-12-20 1987-08-25 National Molding Corporation Buckle type fastener
US4808117A (en) * 1987-09-08 1989-02-28 Stanley Aviation Corporation Coupler with combination locking and bonding ring
US4881760A (en) * 1988-11-07 1989-11-21 Stanley Aviation Corporation Conduit coupling device with redundancy features
US4900070A (en) * 1989-02-21 1990-02-13 Stanley Aviation Corporation Conduit coupling device with redundancy features
US5188400A (en) * 1991-09-17 1993-02-23 Stanley Aviation Corporation Spring loaded coupling with positive spring latch

Also Published As

Publication number Publication date
DE69615209D1 (de) 2001-10-18
DE69615209T2 (de) 2002-06-13
ES2165527T3 (es) 2002-03-16
EP1092905B1 (en) 2003-04-02
BR9611702A (pt) 1999-12-28
ATE205586T1 (de) 2001-09-15
WO1997015778A1 (en) 1997-05-01
EP0853740B1 (en) 2001-09-12
EP1092905A1 (en) 2001-04-18
DE69627217D1 (de) 2003-05-08
US5620210A (en) 1997-04-15
EP0853740A1 (en) 1998-07-22
DE69627217T2 (de) 2003-11-06

Similar Documents

Publication Publication Date Title
ES2190939T3 (es) Acoplamiento mejorado para conducto de fluido.
US4443031A (en) Connector fitting for connecting corrugated conduit sections
US4989905A (en) Fitting for corrugated tubing
BR9612338A (pt) Dispositvio para acoplamento de mangueira
SU1263204A3 (ru) Дренажна труба
SE9500134L (sv) Friktionsring liksom koppling med en sådan friktionsring
JPS5949084U (ja) カツプリ
ES266698Y (es) "brida para la sujecion de tubos".
FI963641A0 (fi) Laite putkien liittämiseksi
EP0945646A3 (en) Cord end stopper
ES2063184T5 (es) Procedimiento para la fabricacion de un conducto de aguas residuales de plastico.
BR9203114A (pt) Uniao giratoria para tubos
EP0947753A3 (en) Fluid coupling
US5794984A (en) Quick connector
ATE437330T1 (de) Gehäuseförmige kupplungsvorrichtung
EP1122484A3 (en) A junction device for hoses.
DK0454630T3 (da) Hurtigt på- og afmonterbar rørkoblingsfitting
SE8406384L (sv) Slangkoppling
US3851671A (en) Snap-on leak proof clamp
EP0310177B1 (en) A detachable connection
EP0459797A1 (en) Pipe joints and couplings
JPH078951Y2 (ja) コルゲート管の継手構造
JP2554472Y2 (ja) センタードレンチーズ
EP0009392B1 (en) Couplings
KR800000383Y1 (ko) 조립식 콘크리트 수로의 연접부