DE3439522A1 - Hose connection - Google Patents
Hose connectionInfo
- Publication number
- DE3439522A1 DE3439522A1 DE19843439522 DE3439522A DE3439522A1 DE 3439522 A1 DE3439522 A1 DE 3439522A1 DE 19843439522 DE19843439522 DE 19843439522 DE 3439522 A DE3439522 A DE 3439522A DE 3439522 A1 DE3439522 A1 DE 3439522A1
- Authority
- DE
- Germany
- Prior art keywords
- hose
- sealing
- connecting piece
- beads
- retaining beads
- 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.)
- Withdrawn
Links
Classifications
-
- 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
- F16L33/30—Arrangements for connecting hoses to rigid members; Rigid hose connectors, i.e. single members engaging both hoses comprising parts inside the hoses only
-
- 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
- F16L33/18—Arrangements for connecting hoses to rigid members; Rigid hose connectors, i.e. single members engaging both hoses characterised by the use of additional sealing means
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Joints That Cut Off Fluids, And Hose Joints (AREA)
Abstract
Description
Schlauchanschluß Hose connection
Die Erfindung betrifft einen Schlauchanschluß nach dem Oberbegriff des Patentanspruchs wie er allgemein üblich ist. Bei Kunststoffschläuchen mit relativ großer Härte wird aus Kostengründen auf eine zusätzliche Schlauchschelle im Aufsteckbereich verzichtet, weil der Kunststoffschlauch aufgrund seiner Härte nur wenig nachgibt und auch ohne derartige Schellen den Schlauch sicher auf dem profilierten Schlauchstutzen festzuhalten vermag. Wegen der relativ großen Härte des Schlauchwerkstoffes dichtet dieser jedoch nicht unter allen Umständen sauber genug gegenüber den Dichtwulsten des Schlauchstutzens ab, insbesondere, wenn diese an ihrer schneidenartigen Spitze schartig oder verkratzt sind.The invention relates to a hose connection according to the preamble of the claim as it is common practice. For plastic hoses with relative For reasons of cost, an additional hose clamp is required in the slip-on area for reasons of cost dispensed with because the plastic hose gives only a little due to its hardness and the hose securely on the profiled hose socket even without such clamps able to hold on. Seals because of the relatively high hardness of the hose material However, this is not under all circumstances clean enough to face the sealing beads of the hose connector, especially if it is at its blade-like tip are jagged or scratched.
Bei Vibrationen oder nach längerem Gebrauch kann es zu Undichtigkeiten kommen.In the event of vibrations or after prolonged use, leaks can occur come.
Aufgabe der Erfindung ist es, den zugrunde gelegten Schlauchanschluß mit möglichst geringem zusätzlichem Aufwand sorgfältig abzudichten, so daß unter den genannten Umständen keine Leckagen auftreten können.The object of the invention is to provide the hose connection on which it is based carefully seal with the least possible additional effort, so that under no leakages can occur under the circumstances mentioned.
Diese Aufgabe wird erfindungsgemäß durch die kennzeichnenden Merkmale des Patentanspruchs gelöst. Dank des bzw. der zusätzlichen Rundschnurdichtringe(s) im Bereich der Aufstecklänge unmittelbar vor, hinter oder zwischen den Dichtwülsten kommt es auch bei unsauberer Anlage des Schlauches an den Dichtwülsten zu einer zuverlässigen Abdichtung. Harte Kunststoffschläuche haben in der Regel eine sehr glatte Oberfläche, die auf den gummielastischen Rundschnurdichtringen zuverlässig dichten.According to the invention, this object is achieved by the characterizing features of the claim solved. Thanks to the additional O-ring sealing ring (s) in the area of the slip-on length immediately in front of, behind or between the sealing beads occur even if the hose is not properly positioned on the sealing beads a reliable seal. Hard plastic tubing usually has a very smooth surface on the rubber-elastic O-ring sealing rings seal reliably.
Die Erfindung ist nachfolgend anhand eines in der Zeichnung dargestellten Ausführungsbeispieles noch kurz erläutert. Die einzige Figur zeigt eine Schnitt-Ansicht durch bzw. auf einen Schlauchanschluß mit zusätzlichem Rundschnurdichtring.The invention is illustrated below with reference to one in the drawing Exemplary embodiment briefly explained. The only figure shows a sectional view through or on a hose connection with an additional round cord sealing ring.
Der auf den Schlauchanschluß aufzuschiebende Schlauch 1 besteht aus hartem Kunststoff, beispielsweise aus PVC mit einem geringen Weichmacheranteil. Der zugehörige Schlauchstutzen 2 weist auf seiner Außenseite mehrere in Umfangsrichtung verlaufende Dicht- und Haltewulste 3 auf, die im Querschnitt sägezahnartig profiliert sind.The hose 1 to be pushed onto the hose connection consists of hard plastic, for example made of PVC with a small amount of plasticizer. The associated hose connector 2 has several in the circumferential direction on its outside running sealing and retaining beads 3, which are profiled like a sawtooth in cross section are.
Sie sind im Außendurchmesser größer als der Innendurchmesser des Schlauches, so daß dieser unter Vorspannung auf den Schlauchstutzen aufgesteckt werden muß. Wegen der großen Härte und hohen Vorspannung des Schlauches vermag dieser die hydraulisch bedingten Abzugskräfte sicher aufzunehmen und den Schlauch fest am Schlauchstutzen zu fixieren. Die Schlauchwandung wölbt sich zwischen den Spitzen der Dicht- und Haltewülste girlandenartig nach innen durch, wodurch ein gewisser Formschluß gegeben ist. Nachdem jedoch die Flanken und die Spitzen der Dicht- und Haltewulste nur an relativ schmalen Linien an der Innenseite des Schlauches anliegen, kann es leicht zu Undichtigkeiten kommen, insbesondere dann, wenn die Oberfläche der Dicht- und Haltewulste verkratzt ist. Aufgrund der relativ großen Härte des Kunststoffschlauches kommt es nicht zu einem Ausfüllen der Zwickel zwischen den einzelnen Dicht- und Haltewülsten, wie dies beispielsweise bei einem Gummischlauch oder bei einem Schlauch aus Weichkunststoff der Fall ist.Their outer diameter is larger than the inner diameter of the hose, so that it must be attached to the hose connector under pretension. Because of the great hardness and high pre-tension of the hose, it can do the hydraulic to safely absorb the pull-off forces and hold the hose firmly to the hose connector to fix. The hose wall arches between the tips of the sealing and Retaining beads in a garland-like manner inward through which a certain form fit is given is. After, however, the flanks and the tips of the sealing and retaining beads only start If there are relatively narrow lines on the inside of the hose, it can easily leaks occur, especially if the surface of the sealing and Retaining beads is scratched. Due to the relatively great hardness of the plastic tube there is no filling of the gusset between the individual sealing and retaining beads, as is the case, for example, with a rubber hose or a hose made of soft plastic the case is.
Zur besseren Abdichtung des Schlauches gegenüber dem Schlauchstutzen 2 ist im Bereich der Aufstecklänge 4 eine Nut 6 in Umfangsrichtung eingearbeitet, in die ein Rundschnurdichtring 5 aus gummielastischem Werkstoff eingelegt ist. In entspanntem Zustand steht dieser Rundschnurdichtring radial aus der Nut etwas heraus.For better sealing of the hose against the hose connector 2 a groove 6 is incorporated in the circumferential direction in the area of the slip-on length 4, In which an O-ring sealing ring 5 made of rubber-elastic material is inserted. In In the relaxed state, this O-ring sealing ring protrudes slightly radially out of the groove.
Nachdem der Rundschnurdichtring axial weit genug von den Spitzen benachbarter Dicht- und Haltewülste entfernt ist, legt sich der Schlauch mit seiner innenseitigen Oberfläche dichtend auf den überstehenden Teil des Rundschnurdichtringes an.After the O-ring sealing ring is axially far enough from the tips of the neighboring Sealing and retaining beads are removed, the inner side of the hose lies down Surface sealing on the protruding part of the O-ring sealing ring.
Der Vorteil der Erfindung liegt darin, daß der Aufwand für das Abdichten nur sehr gering ist und praktisch keine zusätzliche Arbeit, wie z. B. das Anbringen einer außenseitigen Schlauchschelle, erforderlich ist. Die zur Aufnahme des Rundschnurdichtringes erforderliche Nut 6 bzw. - falls gefordert - deren mehrere, kann bzw.The advantage of the invention is that the effort for sealing is very little and practically no additional work, such as B. attaching an external hose clamp is required. The one to accommodate the O-ring sealing ring required groove 6 or - if required - several, can or
können in dem gleichen Arbeitsgang, in welchem auch die Dicht- und Haltewülste 3 am Schlauchstutzen angebracht werden, hergestellt werden. Dadurch entsteht kein zusätzlicher Fertigungsaufwand. Nachdem Rundschnurringe billige Massenteile sind, ist der dadurch erforderliche zusätzliche Aufwand nur sehr gering. Auch die Montage des Rundschnurringes ist denkbar einfach. Von Vorteil ist außerdem, daß dieses zusätzliche Dichtmittel auch nach einer Demontage des Schlauchanschlusses für eine erneute Montage voll funktionstüchtig bleibt, was beispielsweise bei Schlauchschellen nicht in jedem Fall gegeben ist.can in the same operation in which the sealing and Retaining beads 3 are attached to the hose nozzle. Through this there is no additional manufacturing effort. Having O-rings cheap mass-produced parts are, the additional effort required is very little. Also the Mounting the O-ring is very easy. Advantageous is also that this additional sealant even after dismantling the hose connection remains fully functional for reassembly, which is the case with hose clamps, for example is not given in every case.
- Leerseite -- blank page -
Claims (1)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19843439522 DE3439522A1 (en) | 1984-10-29 | 1984-10-29 | Hose connection |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19843439522 DE3439522A1 (en) | 1984-10-29 | 1984-10-29 | Hose connection |
Publications (1)
Publication Number | Publication Date |
---|---|
DE3439522A1 true DE3439522A1 (en) | 1985-08-22 |
Family
ID=6248995
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE19843439522 Withdrawn DE3439522A1 (en) | 1984-10-29 | 1984-10-29 | Hose connection |
Country Status (1)
Country | Link |
---|---|
DE (1) | DE3439522A1 (en) |
Cited By (37)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE4007125A1 (en) * | 1990-03-07 | 1991-09-12 | Daimler Benz Ag | Connector for pipe carrying liq. - comprises support, socket with opening and outer bulge to hold it in support, and gasket |
EP0485214A1 (en) * | 1990-11-08 | 1992-05-13 | Bundy Corporation | Housing for a connector assembly |
DE9407719U1 (en) * | 1994-05-10 | 1994-09-22 | Rathor Ag, Appenzell | Detachable detergent bottle |
WO1995008732A1 (en) * | 1993-09-24 | 1995-03-30 | Itt Industries, Inc. | Quick connector housing with elongated barb design |
WO1996004501A2 (en) * | 1994-07-29 | 1996-02-15 | Itt Corporation | Quick connector housing with elongated barb design |
WO1998025067A1 (en) * | 1996-12-06 | 1998-06-11 | A. Raymond & Cie | Connecting element for liquid-conducting plug-in connections |
US5853202A (en) * | 1997-06-17 | 1998-12-29 | Teleflex Incorporated | Hose end fitting assembly |
DE19751361A1 (en) * | 1997-11-20 | 1999-05-27 | Itt Mfg Enterprises Inc | Connection element for pipes or hoses |
WO2000019137A1 (en) * | 1998-09-25 | 2000-04-06 | Aeroquip Corporation | Clip fitting for a hose |
EP1647756A1 (en) * | 2004-10-13 | 2006-04-19 | John Deere Fabriek Horst B.V. | Spraying boom conduit |
EP1818592A1 (en) * | 2004-09-24 | 2007-08-15 | Nitta Moore Company | Connection structure for resin pipe |
USD645547S1 (en) | 2007-11-19 | 2011-09-20 | Value Plastics, Inc. | Male quick connect fitting |
USD649240S1 (en) | 2009-12-09 | 2011-11-22 | Value Plastics, Inc. | Male dual lumen bayonet connector |
USD650478S1 (en) | 2009-12-23 | 2011-12-13 | Value Plastics, Inc. | Female dual lumen connector |
USD652510S1 (en) | 2011-02-11 | 2012-01-17 | Value Plastics, Inc. | Connector for fluid tubing |
USD652511S1 (en) | 2011-02-11 | 2012-01-17 | Value Plastics, Inc. | Female body of connector for fluid tubing |
US8113546B2 (en) | 2005-06-10 | 2012-02-14 | Value Plastics, Inc. | Latching female fluid tubing coupler |
USD655393S1 (en) | 2009-06-23 | 2012-03-06 | Value Plastics, Inc. | Multi-port valve |
USD663022S1 (en) | 2011-02-11 | 2012-07-03 | Nordson Corporation | Male body of connector for fluid tubing |
US8235426B2 (en) | 2008-07-03 | 2012-08-07 | Nordson Corporation | Latch assembly for joining two conduits |
US8397756B2 (en) | 2006-01-20 | 2013-03-19 | Nordson Corporation | Fluid conduit couplers with depressible latch mechanism |
CN103174897A (en) * | 2013-04-08 | 2013-06-26 | 上海沃施园艺股份有限公司 | Hosepipe bypass seal joint |
USD698440S1 (en) | 2011-07-29 | 2014-01-28 | Nordson Corporation | Connector for fluid tubing |
USD699840S1 (en) | 2011-07-29 | 2014-02-18 | Nordson Corporation | Male body of connector for fluid tubing |
USD699841S1 (en) | 2011-07-29 | 2014-02-18 | Nordson Corporation | Female body of connector for fluid tubing |
USD709612S1 (en) | 2011-12-23 | 2014-07-22 | Nordson Corporation | Female dual lumen connector |
US9046205B2 (en) | 2009-12-09 | 2015-06-02 | Nordson Corporation | Fluid connector latches with profile lead-ins |
US9388929B2 (en) | 2009-12-09 | 2016-07-12 | Nordson Corporation | Male bayonet connector |
US9464741B2 (en) | 2009-12-09 | 2016-10-11 | Nordson Corporation | Button latch with integrally molded cantilever springs |
USD785790S1 (en) | 2009-12-09 | 2017-05-02 | General Electric Company | Male dual lumen bayonet connector |
USD838366S1 (en) | 2016-10-31 | 2019-01-15 | Nordson Corporation | Blood pressure connector |
US10711930B2 (en) | 2009-12-09 | 2020-07-14 | Nordson Corporation | Releasable connection assembly |
CN113819336A (en) * | 2021-09-23 | 2021-12-21 | 江苏云端启建设工程有限公司 | Non-excavation repair process for rain sewage pipeline |
US11596999B2 (en) | 2019-02-20 | 2023-03-07 | Milwaukee Electric Tool Corporation | PEX expansion tool |
US11633775B2 (en) | 2019-02-20 | 2023-04-25 | Milwaukee Electric Tool Corporation | PEX expansion tool |
US11779990B2 (en) | 2021-04-09 | 2023-10-10 | Milwaukee Electric Tool Corporation | Expansion tool |
US11819902B2 (en) | 2020-11-27 | 2023-11-21 | Milwaukee Electric Tool Corporation | Expansion tool |
-
1984
- 1984-10-29 DE DE19843439522 patent/DE3439522A1/en not_active Withdrawn
Cited By (55)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE4007125A1 (en) * | 1990-03-07 | 1991-09-12 | Daimler Benz Ag | Connector for pipe carrying liq. - comprises support, socket with opening and outer bulge to hold it in support, and gasket |
EP0485214A1 (en) * | 1990-11-08 | 1992-05-13 | Bundy Corporation | Housing for a connector assembly |
WO1995008732A1 (en) * | 1993-09-24 | 1995-03-30 | Itt Industries, Inc. | Quick connector housing with elongated barb design |
DE9407719U1 (en) * | 1994-05-10 | 1994-09-22 | Rathor Ag, Appenzell | Detachable detergent bottle |
WO1996004501A2 (en) * | 1994-07-29 | 1996-02-15 | Itt Corporation | Quick connector housing with elongated barb design |
WO1996004501A3 (en) * | 1994-07-29 | 1996-06-13 | Itt | Quick connector housing with elongated barb design |
WO1998025067A1 (en) * | 1996-12-06 | 1998-06-11 | A. Raymond & Cie | Connecting element for liquid-conducting plug-in connections |
EP0848201A1 (en) * | 1996-12-06 | 1998-06-17 | A. Raymond & Cie | Connecting device for socket and spigot couplings conveying fluids |
US5853202A (en) * | 1997-06-17 | 1998-12-29 | Teleflex Incorporated | Hose end fitting assembly |
EP0918184A3 (en) * | 1997-11-20 | 2001-07-18 | Itt Manufacturing Enterprises, Inc. | Connection member for pipes |
US6199915B1 (en) | 1997-11-20 | 2001-03-13 | Itt Manufacturing Enterprises, Inc. | Connector element for tubing or hoses |
DE19751361A1 (en) * | 1997-11-20 | 1999-05-27 | Itt Mfg Enterprises Inc | Connection element for pipes or hoses |
CZ299521B6 (en) * | 1998-09-25 | 2008-08-20 | Eaton Aeroquip Inc. | Clip fitting for a hose |
WO2000019137A1 (en) * | 1998-09-25 | 2000-04-06 | Aeroquip Corporation | Clip fitting for a hose |
US7735877B2 (en) | 2004-09-24 | 2010-06-15 | Fts Co., Ltd. | Connection structure for resin pipe |
EP1818592A1 (en) * | 2004-09-24 | 2007-08-15 | Nitta Moore Company | Connection structure for resin pipe |
EP1818592A4 (en) * | 2004-09-24 | 2009-08-26 | Nitta Moore Co Ltd | Connection structure for resin pipe |
US7503591B2 (en) | 2004-10-13 | 2009-03-17 | John Deere Fabriek Horst B.V. | Spray bar assembly conduit |
EP1647756A1 (en) * | 2004-10-13 | 2006-04-19 | John Deere Fabriek Horst B.V. | Spraying boom conduit |
US8113546B2 (en) | 2005-06-10 | 2012-02-14 | Value Plastics, Inc. | Latching female fluid tubing coupler |
US8397756B2 (en) | 2006-01-20 | 2013-03-19 | Nordson Corporation | Fluid conduit couplers with depressible latch mechanism |
USD645547S1 (en) | 2007-11-19 | 2011-09-20 | Value Plastics, Inc. | Male quick connect fitting |
USD654573S1 (en) | 2007-11-19 | 2012-02-21 | Value Plastics, Inc. | Female quick connect fitting |
US8596688B2 (en) | 2008-07-03 | 2013-12-03 | Nordson Corporation | Latch assembly for joining two conduits |
US8448994B2 (en) | 2008-07-03 | 2013-05-28 | Nordson Corporation | Latch assembly for joining two conduits |
US8235426B2 (en) | 2008-07-03 | 2012-08-07 | Nordson Corporation | Latch assembly for joining two conduits |
USD655393S1 (en) | 2009-06-23 | 2012-03-06 | Value Plastics, Inc. | Multi-port valve |
US9388929B2 (en) | 2009-12-09 | 2016-07-12 | Nordson Corporation | Male bayonet connector |
US10711930B2 (en) | 2009-12-09 | 2020-07-14 | Nordson Corporation | Releasable connection assembly |
USD649240S1 (en) | 2009-12-09 | 2011-11-22 | Value Plastics, Inc. | Male dual lumen bayonet connector |
US10001236B2 (en) | 2009-12-09 | 2018-06-19 | General Electric Company | Male bayonet connector |
US9732891B2 (en) | 2009-12-09 | 2017-08-15 | General Electric Company | Male bayonet connector |
USD785790S1 (en) | 2009-12-09 | 2017-05-02 | General Electric Company | Male dual lumen bayonet connector |
US9464741B2 (en) | 2009-12-09 | 2016-10-11 | Nordson Corporation | Button latch with integrally molded cantilever springs |
US9046205B2 (en) | 2009-12-09 | 2015-06-02 | Nordson Corporation | Fluid connector latches with profile lead-ins |
USD650478S1 (en) | 2009-12-23 | 2011-12-13 | Value Plastics, Inc. | Female dual lumen connector |
USD652511S1 (en) | 2011-02-11 | 2012-01-17 | Value Plastics, Inc. | Female body of connector for fluid tubing |
USD652510S1 (en) | 2011-02-11 | 2012-01-17 | Value Plastics, Inc. | Connector for fluid tubing |
USD663022S1 (en) | 2011-02-11 | 2012-07-03 | Nordson Corporation | Male body of connector for fluid tubing |
USD699840S1 (en) | 2011-07-29 | 2014-02-18 | Nordson Corporation | Male body of connector for fluid tubing |
USD699841S1 (en) | 2011-07-29 | 2014-02-18 | Nordson Corporation | Female body of connector for fluid tubing |
USD698440S1 (en) | 2011-07-29 | 2014-01-28 | Nordson Corporation | Connector for fluid tubing |
USD712537S1 (en) | 2011-07-29 | 2014-09-02 | Nordson Corporation | Connector for fluid tubing |
USD709612S1 (en) | 2011-12-23 | 2014-07-22 | Nordson Corporation | Female dual lumen connector |
CN103174897A (en) * | 2013-04-08 | 2013-06-26 | 上海沃施园艺股份有限公司 | Hosepipe bypass seal joint |
USD964557S1 (en) | 2016-10-31 | 2022-09-20 | Nordson Corporation | Blood pressure connector |
USD961070S1 (en) | 2016-10-31 | 2022-08-16 | Nordson Corporation | Blood pressure connector |
USD964558S1 (en) | 2016-10-31 | 2022-09-20 | Nordson Corporation | Blood pressure connector |
USD838366S1 (en) | 2016-10-31 | 2019-01-15 | Nordson Corporation | Blood pressure connector |
USD967955S1 (en) | 2016-10-31 | 2022-10-25 | Nordson Corporation | Blood pressure connector |
US11596999B2 (en) | 2019-02-20 | 2023-03-07 | Milwaukee Electric Tool Corporation | PEX expansion tool |
US11633775B2 (en) | 2019-02-20 | 2023-04-25 | Milwaukee Electric Tool Corporation | PEX expansion tool |
US11819902B2 (en) | 2020-11-27 | 2023-11-21 | Milwaukee Electric Tool Corporation | Expansion tool |
US11779990B2 (en) | 2021-04-09 | 2023-10-10 | Milwaukee Electric Tool Corporation | Expansion tool |
CN113819336A (en) * | 2021-09-23 | 2021-12-21 | 江苏云端启建设工程有限公司 | Non-excavation repair process for rain sewage pipeline |
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Legal Events
Date | Code | Title | Description |
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OAV | Applicant agreed to the publication of the unexamined application as to paragraph 31 lit. 2 z1 | ||
OP8 | Request for examination as to paragraph 44 patent law | ||
8130 | Withdrawal |