DE3439522A1 - Hose connection - Google Patents

Hose connection

Info

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Withdrawn
Application number
DE19843439522
Other languages
German (de)
Inventor
Reinhard 7560 Gaggenau Bittmann
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.)
Daimler Benz AG
Original Assignee
Daimler Benz AG
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 Daimler Benz AG filed Critical Daimler Benz AG
Priority to DE19843439522 priority Critical patent/DE3439522A1/en
Publication of DE3439522A1 publication Critical patent/DE3439522A1/en
Withdrawn legal-status Critical Current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
    • F16L33/00Arrangements for connecting hoses to rigid members; Rigid hose connectors, i.e. single members engaging both hoses
    • F16L33/30Arrangements for connecting hoses to rigid members; Rigid hose connectors, i.e. single members engaging both hoses comprising parts inside the hoses only
    • 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
    • F16L33/00Arrangements for connecting hoses to rigid members; Rigid hose connectors, i.e. single members engaging both hoses
    • F16L33/18Arrangements for connecting hoses to rigid members; Rigid hose connectors, i.e. single members engaging both hoses characterised by the use of additional sealing means

Abstract

The invention relates to a hose connection having at least one hose connecting piece onto which the hose (which preferably consists of hard plastic) is plugged. One or more sealing and retaining beads, which run in the circumferential direction and are profiled such that their cross-section is like a saw tooth or has a similar profile are fitted on the outside of the hose connecting piece. The hose is fixed firmly on the sealing and retaining beads entirely by virtue of its intrinsic stress. In order to seal the hose against the hose connecting piece in a reliable manner using means which are as simple as possible, there is provided in the region of the plugging-on length at least one additional soft seal, which consists of an O-ring seal composed of rubber-elastic material, which is inserted into a circumferential groove inside the hose connecting piece.

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)

Patentanspruch Schlauchanschluß mit wenigstens einem Schlauchstutzen, der auf seiner Außenseite mit vorzugsweise mehreren in Umfangsrichtung verlaufenden, im Querschnitt sägezahnartigen oder ähnlichen Dicht- und Haltewulsten profiliert ist, auf dem der unter Vorspannung aufgesteckte Schlauch allein aufgrund seiner Eigenspannung dichtend und fest haftend aufliegt, dadurch gekennzeichnet, daß im Bereich der Aufstecklänge (4) des vorzugsweise aus hartem Kunststoff bestehenden Schlauches (1) außer den Wulsten (3) auch noch wenigstens eine einen Rundschnurdichtring (5) aus gummielastischem Werkstoff aufnehmende Nut (6) angeordnet ist. Patent claim hose connection with at least one hose connector, which on its outside with preferably several running in the circumferential direction, Profiled in cross-section sawtooth-like or similar sealing and retaining beads is on which the pretensioned hose attached solely due to its Residual stress rests sealingly and firmly adhering, characterized in that im Area of the slip-on length (4) of the preferably made of hard plastic Hose (1) apart from the beads (3) also at least one round cord sealing ring (5) made of elastic material receiving groove (6) is arranged.
DE19843439522 1984-10-29 1984-10-29 Hose connection Withdrawn DE3439522A1 (en)

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)

* Cited by examiner, † Cited by third party
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 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
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
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

Cited By (55)

* Cited by examiner, † Cited by third party
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 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
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
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
USD964558S1 (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
USD964557S1 (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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