EP4274979A1 - Dichtungsanordnung und verbindungsmuffe - Google Patents
Dichtungsanordnung und verbindungsmuffeInfo
- Publication number
- EP4274979A1 EP4274979A1 EP21844341.4A EP21844341A EP4274979A1 EP 4274979 A1 EP4274979 A1 EP 4274979A1 EP 21844341 A EP21844341 A EP 21844341A EP 4274979 A1 EP4274979 A1 EP 4274979A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- sealing arrangement
- seal
- ring
- ring seal
- sealing
- 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.)
- Pending
Links
- 238000007789 sealing Methods 0.000 claims abstract description 76
- 239000012530 fluid Substances 0.000 claims abstract description 5
- 230000003068 static effect Effects 0.000 claims abstract description 4
- 238000004519 manufacturing process Methods 0.000 description 5
- 230000000875 corresponding effect Effects 0.000 description 4
- 230000008878 coupling Effects 0.000 description 3
- 238000010168 coupling process Methods 0.000 description 3
- 238000005859 coupling reaction Methods 0.000 description 3
- 238000005304 joining Methods 0.000 description 2
- 210000002435 tendon Anatomy 0.000 description 2
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 239000013536 elastomeric material Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000002452 interceptive effect Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
- 230000000007 visual effect Effects 0.000 description 1
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
- F16L17/00—Joints with packing adapted to sealing by fluid pressure
- F16L17/10—Joints with packing adapted to sealing by fluid pressure the packing being sealed by the pressure of a fluid other than the fluid in or surrounding the pipe
-
- 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
- F16L21/00—Joints with sleeve or socket
- F16L21/02—Joints with sleeve or socket with elastic sealing rings between pipe and sleeve or between pipe and socket, e.g. with rolling or other prefabricated profiled rings
- F16L21/04—Joints with sleeve or socket with elastic sealing rings between pipe and sleeve or between pipe and socket, e.g. with rolling or other prefabricated profiled rings in which sealing rings are compressed by axially-movable members
-
- 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
- F16L37/00—Couplings of the quick-acting type
- F16L37/08—Couplings of the quick-acting type in which the connection between abutting or axially overlapping ends is maintained by locking members
- F16L37/084—Couplings of the quick-acting type in which the connection between abutting or axially overlapping ends is maintained by locking members combined with automatic locking
- F16L37/092—Couplings of the quick-acting type in which the connection between abutting or axially overlapping ends is maintained by locking members combined with automatic locking by means of elements wedged between the pipe and the frusto-conical surface of the body of the connector
- F16L37/0925—Couplings of the quick-acting type in which the connection between abutting or axially overlapping ends is maintained by locking members combined with automatic locking by means of elements wedged between the pipe and the frusto-conical surface of the body of the connector with rings which bite into the wall of the pipe
-
- 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
- F16L37/00—Couplings of the quick-acting type
- F16L37/08—Couplings of the quick-acting type in which the connection between abutting or axially overlapping ends is maintained by locking members
- F16L37/084—Couplings of the quick-acting type in which the connection between abutting or axially overlapping ends is maintained by locking members combined with automatic locking
- F16L37/092—Couplings of the quick-acting type in which the connection between abutting or axially overlapping ends is maintained by locking members combined with automatic locking by means of elements wedged between the pipe and the frusto-conical surface of the body of the connector
- F16L37/0927—Couplings of the quick-acting type in which the connection between abutting or axially overlapping ends is maintained by locking members combined with automatic locking by means of elements wedged between the pipe and the frusto-conical surface of the body of the connector the wedge element being axially displaceable for releasing the coupling
Definitions
- the present invention relates to a sealing arrangement for generating a sealing function in a pipe connection, in particular a static one, and a connecting sleeve comprising a sealing arrangement according to the preamble of the independent patent claims.
- sockets are often used, in which the end sections of the pipelines to be connected are introduced from two opposite sides and then are sealingly fi xed therein.
- the sockets can also be formed at the end of a pipeline.
- the fixation is carried out by means of ring seals made of elastomeric material, which also ensure the required tightness of the connection at the same time.
- the ring seals are located in circumferential ring grooves of the plug-in socket and when inserting the end sections of the pipe or pipes to be connected are radially squeezed between an inner wall of the ring groove and an outer surface of the respective end sections, so that they lie tightly against the outer surfaces of the end sections and the Hold the end sections of the pipes with a friction fit.
- the tensioning element which is designed as a toggle lever
- the width of an annular groove into which the ring seal is inserted is reduced, so that the ring seal is squeezed on both sides.
- the ring seal rests with an outer circumference in the base of the ring groove, so that an inner diameter of the ring seal is reduced by the deformation and it thus comes into contact with the pipe to be connected.
- a pipe end can be tightly connected with a corre sponding plug connection.
- such a connection is not very suitable for connecting pressurized lines, since the ring seal is impacted by internal pressure in the tube precisely in the area of its contact with the tube end, and as a result tends to lift off.
- a sealing arrangement and a connecting sleeve are to be made available that make it possible to use all the essential structural properties of a ring seal.
- an additional processing step for deburring a pipe end should be prevented or at least the effort involved in deburring should be reduced.
- a sealing arrangement according to the invention for generating a sealing function in a, in particular static, pipe connection, in particular between a fluid-carrying pipe and a connection socket comprises a sealing arrangement arranged in a circumferential groove ring seal.
- the sealing arrangement comprises a sealing seat and a tensioning element for tensioning the ring seal, it being possible or being brought into contact with the fluid-carrying pipe by tensioning the ring seal.
- This also makes it possible for a ring seal to be used which has an inner diameter which is larger than an outer diameter of the pipe end to be sealed.
- the ring seal does not have to be slipped or pulled over an edge of the pipe end, but rather can be slipped over the pipe end without interfering with it because of its larger diameter.
- the sealing system has a pressure side.
- the pressure side of the sealing arrangement is that side which, in the operational state, is subjected to pressure from the pipe to be connected.
- the seal seat is located in the circumferential groove on the pressure side and has overflow openings so that the pressure of the fluid is applied to the ring seal on the pressure side.
- the seal seat can be arranged in the circumferential groove in such a way that it tapers conically in the direction of the pressure side, so that tensioning the ring seal compresses it in the radial direction, in particular shifts it, with the circumferential groove becoming accessible on the pressure side remains.
- this means that the circumferential groove can be subjected to pressure on its pressure side, in particular at the bottom of the groove.
- An axial direction thus essentially corresponds to the direction of the longitudinal axis of a pipe to be connected, and correspondingly a radial direction corresponds to the direction of a pipe ray extending perpendicularly from this axis.
- a jam analysis in the radial direction thus corresponds to a displacement of an element or a surface in the direction of the longitudinal axis of the pipe.
- the ring seal can also be pressurized. Existing compression on the ring seal is additionally increased by this pressure application. In other words, with the increase in pressure within the pipe connection, the pressure on the ring seal is increased and the sealing function is accordingly increased.
- the overflow openings are designed as radially extending grooves. On the one hand, this permits simple and cost-effective production, on the other hand, for example, a visual check of the condition of the overflow openings before or during installation is easily possible.
- the overflow openings can be designed as radially extending bores.
- the seal seat can be provided with a circumferential and uninterrupted surface and thus provide a correspondingly large contact surface for the ring seal.
- the seal seat can have a bearing surface for bearing the ring seal.
- This bearing surface is preferably spaced apart from a bottom of the circumferential groove by a recess. It can be provided in particular that the recess is designed as a radially inwardly offset surface of the seal seat.
- Such a design of the seal seat with a recess ensures that the ring seal can also be subjected to pressure in the area of its largest diameter, in particular in the area of the bottom of the groove. In other words, with such a configuration, essentially the entire surface of the ring seal arranged on the pressure side of the sealing arrangement can be subjected to pressure evenly.
- the sealing seat is preferably ring-shaped. It can thus be manufactured easily and with a high level of accuracy.
- this can be at an angle of 5° to 20°, in particular from 7° to 15°, preferably in an angle of 7° to 12°, in particular in an Angle of 10 ° be tapered.
- the seal seat can be made of plastic. This he allows a simple and inexpensive production.
- the seal seat is preferably formed as a separate element, but alternatively it may be formed as an integral part of the coupling sleeve. An integral production is particularly advantageous if the seal seat is designed to run conically.
- the ring seal can be designed as an O-ring. O-rings are easy to manufacture, inexpensive and available in different standard sizes. In addition, they can be easily replaced and have extremely homogeneous properties.
- the ring seal can have a diameter that is larger than the outside diameter of the pipe to be sealed. This enables the sealing arrangement to be joined to a corresponding pipe end without the use of force, without the ring seal touching the pipe end.
- an inner diameter of the ring seal is larger than an inner diameter of the groove.
- the inner diameter of the groove is defined by the surfaces adjacent to the groove.
- the ring seal is set back from the elements adjacent to the ring seal and is therefore protected.
- the clamping element is preferably arranged so that it can move axially and can therefore be moved in the axial direction, ie along the tube. This allows the width of the circumferential groove to be changed easily so that the ring seal can be easily clamped.
- the circumferential groove is limited on one side by the clamping element.
- the circumferential groove has a fixed and a movable side wall, with the side wall being movable being formed as part of the clamping element. The ring seal can thus be tightened easily.
- a further aspect of the invention relates to a connecting sleeve comprising a sealing arrangement as described here. This makes it possible to provide a compact unit for connecting tube ends.
- the tensioning element can be designed as a sleeve that can be screwed into the connecting sleeve.
- the ring seal can be pretensioned by simply twisting or screwing the tensioning element into the connecting socket.
- the tensioning element can be designed as an end section of an arrangement of a plurality of tensioning elements which can be moved into a stable position via a dead center.
- the ring seal can be precisely preloaded by simply snapping the clamping elements over.
- the tendons can be formed in particular as described in EP 3120 064 B1.
- the clamping element can be designed as a clamping ring with clamping screws, the clamping ring being displaceable in the direction of the ring seal by means of the clamping screws.
- the connecting sleeve as described here can be designed in such a way that it has a second sealing arrangement as described here, which is arranged in particular opposite the first sealing arrangement.
- Figure 1 shows a prior art coupling sleeve in the open position
- FIG. 2 the connecting sleeve according to FIG. 1 in the tensioned position
- FIG. 3 the functional principle of a conventional 0-ring
- FIG. 4 a first embodiment of a sealing seat
- FIG. 5 a detailed view of a cross section through the sealing seat according to FIG. 4;
- FIG. 6 a detailed view of a cross section of a sealing arrangement in the installed state in the open position
- FIG. 7 the detailed view according to FIG. 6 in the clamped position
- FIG. 8 a second embodiment of a sealing seat
- FIG. 9 a detailed view of a cross section through the sealing seat according to FIG. 8;
- FIG. 10 a detailed view of a cross section of a sealing arrangement in the installed state in the open position
- FIG. 11 the detailed view according to FIG. 10 in the clamped position
- FIG. 12 a sealing arrangement with an alternative design of a tensioning element.
- FIG. 1 shows a prior art coupling sleeve 12 in the open position.
- a sealing arrangement 10 is arranged in the connecting sleeve 12 .
- the sealing arrangement 10 has an annular seal 20 which forms out in the present case as an O-ring.
- the sealing arrangement 10 also has a tensioning element 40 .
- the tensioning element 40 is axially movable and displaceable with tensioning elements, not designated in any more detail, which are designed as toggle levers.
- the clamping element 40 is present as an Endab cut countries an integral part of the arrangement of clamping members.
- the ring seal 20 is arranged in the connecting sleeve 12 in a circumferential groove 121 ei.
- the basic structure of the connecting sleeve 12 corresponds to the structure disclosed in EP 3120 064 Bl.
- the structure, arrangement and mode of operation of the tendons also correspond to those in EP 3120 064 Bl.
- FIG. 2 shows the connecting sleeve 12 according to FIG. 1 in the tensioned position.
- the annular seal 20 was compressed by the radial pressing in of the toggle levers, which hold the tensioning element 40 . Their shape has thus changed from an essentially round shape (see FIG. 1) to an essentially oval shape.
- the ring seal 20 rests on the base of the circumferential groove 121, on the side walls of the groove 121, one of these side walls being formed by the clamping element 40, and on an outer surface of the pipe end of the pipe 11.
- the ring seal 20 is thus in contact with a counterpart on four sides. Only an area of the ring seal 20 in the area of its contact with the tube 11 is accessible from the inside of the tube 11 and can be pressurized.
- FIG. 3 shows the functional principle of a ring seal 20 which is designed as a conventional O-ring.
- the O-ring is in an unspecified groove of a connecting sleeve 12.
- a tube 11 to be sealed is pressed in the direction of the arrow into the connec tion sleeve 12.
- the tube 11 must have a chamfer in the area of initial contact with the O-ring in order to avoid damaging the O-ring.
- the O-ring is compressed radially.
- FIG. 4 shows a first embodiment of a sealing seat 30.
- the sealing seat 30 is essentially ring-shaped and has a large number of overflow openings 31. For the sake of clarity, only one of the overflow openings 31 is provided with a reference symbol.
- the seal seat 30 also has a bearing surface 32 for bearing a ring seal. As can be seen from FIG. 4, this bearing surface 32 divided by the overflow openings 31 in meh eral sections.
- the overflow openings 31 are formed before lying as radially extending grooves.
- a recess 33 is arranged on the periphery of the sealing seat 30 so that the contact surface 32 is spaced apart from a circumferential groove in which the sealing seat 30 is arranged or can be arranged.
- the overflow openings 31 create a connection from an area of the circumferential groove directed towards the center of a pipe to an area at the base of the groove, so that pressure can be equalized via these overflow openings 31 or the recess 33 can be pressurized .
- FIG 5 shows a detailed view of a cross section through the seal seat 30 according to FIG spaced in generic use to a base of a circumferential groove.
- FIG. 6 shows a detailed view of a cross section of a sealing arrangement 10 in the installed state in the open position.
- the sealing arrangement 10 includes a sealing seat 30 as described for FIG.
- the cross section shown here corresponds to that from FIG. 5.
- the sealing arrangement 10 is shown in the open position in the present case. It can be seen that the ring seal 20 is slightly spaced from an outer surface of the tube 11 . However, the ring seal 20 touches the bearing surface 32 of the seal seat 30 on one side and a surface of the clamping element 40 on the opposite side. In the position shown here, the pipe 11 can be inserted without colliding with the ring seal 20 in be moved into or removed from the seal assembly 10.
- FIG. 7 shows the detailed view according to FIG. 6 in the clamped position.
- the clamping element 40 was moved in the direction of the arrow towards the ring seal 20 so that the ring seal 20 was clamped between the seal seat 30 and the clamping element 40 and was deformed accordingly. Due to the deformation, an inner diameter of the ring seal 20 has been reduced, so that the ring seal 20 now rests with its inner periphery on an outer circumference of the tube 11 .
- an annular space formed by the recess 33 in the groove 121 is accessible to a fluid. This can flow along the outer surface of the pipe 11 and flow through the overflow openings 31 in the sealing seat 30 into this recess 33 .
- the ring seal 20 can thus be subjected to pressure both in the area of the seal or its contact with the pipe 11 and in the area of its seal or its contact with the bottom of the groove 121 .
- the ring seal 20 can be subjected to the pressure of a fluid located in the pipe 11 on its pressure side.
- an increase in the pressure in the radial direction and opposite to the radial direction can be achieved by the ring seal 20 .
- the ring seal 20 is deformed in such a way that it lifts off the support surface 32 .
- FIG. 8 shows a second embodiment of a sealing seat 30.
- the sealing seat 30 is essentially ring-shaped and has a large number of overflow openings 31. For the sake of clarity, only one of the overflow openings 31 is provided with a reference symbol.
- the seal seat 30 also has a bearing surface 32 for position on a ring seal. As can be seen from FIG. 4, this bearing surface 32 is designed to be continuous.
- the Overflow openings 31 are presently formed as radially extending bores.
- a recess 33 is arranged, into which these holes open.
- the bearing surface 32 is at a distance from a circumferential groove in which the sealing seat 30 is arranged.
- the overflow openings 31 create a connection from an area of the circumferential groove directed towards the center of a pipe to an area at the base of the groove, so that pressure equalization can be created via these overflow openings 31, or the recess 33 with pressure can be charged.
- FIG. 9 shows a detailed view of a cross section through the seal seat 12 according to FIG spaced in generic use to a base of a circumferential groove.
- the embodiment of the sealing seat according to FIGS. 8 and 9 is fully compatible with the sealing arrangement according to FIGS. 6 and 7 and can be exchanged with the sealing seat 30 illustrated therein.
- FIG. 10 shows a detailed view of a cross section of an alternative sealing arrangement 10 in the installed state in the open position.
- this sealing arrangement 10 of the device seat 30 is formed as an integral part of a circumferential groove 121 of a connecting sleeve 12 .
- the sealing seat 30 is designed as a surface that tapers conically in the direction of a pressure side.
- the ring seal 20 has an inner diameter which is larger than the outer diameter of a pipe 11. In the state shown here, the ring seal 20 lies on the surface of the Seal seat 30 and on a surface of the clamping element 40.
- FIG. 11 shows the detailed view according to FIG. 10 in the tensioned position.
- the clamping element 40 was actuated and moved in the axial direction illustrated by an arrow. Accordingly, the ring seal 20 was moved along the tapered surface of the seal seat 30 tapering toward the pressure side of the pipe joint.
- the ring seal 20 has been deformed and radially displaced and/or upset towards the center of the tube. It can be seen that the ring seal is now in contact with an outer surface of the pipe 11, with the surface of the seal seat 30 and with the clamping element 40. It can be seen immediately that the pressure side of the ring seal can be fully pressurized and on this ring seal 20 a state occurs, as is described for the third illustration from FIG. The application of pressure thus increases the sealing of the pipe 11 on the one hand and the clamping of the pipe by the ring seal 20 on the other hand.
- FIG. 12 shows a sealing arrangement 10 with an alternative design of the tensioning element 40.
- This embodiment is compatible with all of the embodiments described and the function of the ring seal 20 and the sealing seat 30 corresponds to that of the exemplary embodiments already described, which is why it is not repeated again becomes.
- the tensioning element 40 can be configured as described here, for example as an end section of an arrangement of toggle levers, which is moved axially by the tensioning of the toggle levers.
- the clamping element 40 is constructed in several parts and has a pressure ring 41 , a clamping ring 42 and a conical ring 43 .
- the pressure ring 41 is in contact with the ring seal 20 and with the Cone ring 43 or can be brought into contact.
- Arranged centrally within the cone ring 43 is a clamping ring 42.
- the cone ring 43 and the clamping ring 42 are slidably mounted on one another on conical surfaces.
- the cone on the cone ring 43 widens in the direction of the joining direction, so that a movement of the cone ring 43 in the direction of the ring seal 20 compresses the clamping ring 42 radially.
- the clamping ring 42 is pressed onto the pipe 11 by this radial pressure, so that this is held by an additional radial force.
- the clamping ring 42 has teeth on its inner circumference, which are directed counter to the direction in which the pipe 11 is joined. When the pipe 11 moves counter to the joining direction, the clamping ring 42 is pressed further into the cone and the radial force which holds the pipe 11 is additionally increased.
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Gasket Seals (AREA)
- Joints With Pressure Members (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CH00007/21A CH718244A1 (de) | 2021-01-06 | 2021-01-06 | Dichtungsanordnung und Verbindungsmuffe. |
PCT/EP2021/087488 WO2022148671A1 (de) | 2021-01-06 | 2021-12-23 | Dichtungsanordnung und verbindungsmuffe |
Publications (1)
Publication Number | Publication Date |
---|---|
EP4274979A1 true EP4274979A1 (de) | 2023-11-15 |
Family
ID=74591695
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP21844341.4A Pending EP4274979A1 (de) | 2021-01-06 | 2021-12-23 | Dichtungsanordnung und verbindungsmuffe |
Country Status (7)
Country | Link |
---|---|
US (1) | US20240151334A1 (de) |
EP (1) | EP4274979A1 (de) |
JP (1) | JP2024504871A (de) |
KR (1) | KR20230125796A (de) |
CA (1) | CA3201389A1 (de) |
CH (1) | CH718244A1 (de) |
WO (1) | WO2022148671A1 (de) |
Family Cites Families (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2567243A (en) * | 1949-10-15 | 1951-09-11 | Joseph B Smith | Sleeve coupling for pipes |
US3227462A (en) * | 1964-06-10 | 1966-01-04 | Otis Eng Co | Seal assemblies for tubular conductors |
US3799585A (en) * | 1972-11-17 | 1974-03-26 | Reed Tool Co | Rotary fluid joint |
US4407526A (en) * | 1981-01-05 | 1983-10-04 | Perfection Corporation | Tab-type coupling and method |
GB2337310A (en) * | 1998-04-28 | 1999-11-17 | Hepworth Building Prod | Seal seat for a pipe socket |
KR101049449B1 (ko) * | 2011-02-09 | 2011-07-15 | 현대주철산업 주식회사 | 관 연결용 압륜 조립체 |
CH709441A2 (de) * | 2014-03-20 | 2015-09-30 | Theodor Wüst | Steckmuffe. |
WO2016028739A1 (en) * | 2014-08-18 | 2016-02-25 | Weatherford Technology Holdings, Llc | Pivot joint |
EP3112728B1 (de) * | 2015-07-03 | 2020-02-19 | FASTER S.r.l. | Dichtung für schnellkupplungen und schnellkupplung mit besagter dichtung |
US20180023733A1 (en) * | 2016-07-19 | 2018-01-25 | Wen Sheng Fu Co., Ltd | Pipe adapter |
-
2021
- 2021-01-06 CH CH00007/21A patent/CH718244A1/de unknown
- 2021-12-23 US US18/260,534 patent/US20240151334A1/en active Pending
- 2021-12-23 EP EP21844341.4A patent/EP4274979A1/de active Pending
- 2021-12-23 JP JP2023564261A patent/JP2024504871A/ja active Pending
- 2021-12-23 WO PCT/EP2021/087488 patent/WO2022148671A1/de active Application Filing
- 2021-12-23 KR KR1020237022505A patent/KR20230125796A/ko unknown
- 2021-12-23 CA CA3201389A patent/CA3201389A1/en active Pending
Also Published As
Publication number | Publication date |
---|---|
KR20230125796A (ko) | 2023-08-29 |
CA3201389A1 (en) | 2022-07-14 |
CH718244A1 (de) | 2022-07-15 |
WO2022148671A1 (de) | 2022-07-14 |
JP2024504871A (ja) | 2024-02-01 |
US20240151334A1 (en) | 2024-05-09 |
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