CN1250512A - Method for making a pipe connection, and a pipe connection - Google Patents
Method for making a pipe connection, and a pipe connection Download PDFInfo
- Publication number
- CN1250512A CN1250512A CN98803441A CN98803441A CN1250512A CN 1250512 A CN1250512 A CN 1250512A CN 98803441 A CN98803441 A CN 98803441A CN 98803441 A CN98803441 A CN 98803441A CN 1250512 A CN1250512 A CN 1250512A
- Authority
- CN
- China
- Prior art keywords
- pipe
- pressure ring
- pipe joint
- protuberance
- joint
- 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
Images
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
- F16L33/20—Undivided rings, sleeves or like members contracted on the hose or expanded in the hose by means of tools; Arrangements using such 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
- F16L33/00—Arrangements for connecting hoses to rigid members; Rigid hose connectors, i.e. single members engaging both hoses
- F16L33/22—Arrangements for connecting hoses to rigid members; Rigid hose connectors, i.e. single members engaging both hoses with means not mentioned in the preceding groups for gripping the hose between inner and outer parts
- F16L33/225—Arrangements for connecting hoses to rigid members; Rigid hose connectors, i.e. single members engaging both hoses with means not mentioned in the preceding groups for gripping the hose between inner and outer parts a sleeve being movable axially
Abstract
The invention relates to a method of making a pipe connection and to a pipe connection where an insert end (2) having an outer diameter that is larger than the inner diameter of the pipe (1) is inserted into the pipe (1). A flexible pressure ring (4) is then transferred on the connection, the inner diameter of the ring being normally smaller than the outer diameter of the pipe (1) transferred on the insert end (2). The connection is easy to make and it is also applicable for pipes with a large diameter, and the connection is strong and tight due to the flexible pressure ring.
Description
The present invention relates to a kind of method of making pipe joint, the insertion end that one of them elasticity pipe and preparation are placed in this tube interior is installed into inside each other, this inserts the internal diameter of the external diameter of end greater than pipe, and after this inserted end and the mutual insertion of pipe, its initial inside diameter normally was installed into this pipe and inserts on the end less than installing to the flexible pressure ring that inserts the tube outer diameter on the end.
The invention still further relates to a kind of pipe joint, comprise an elasticity pipe, an insertion end and a flexible pressure ring that is placed in these parts outsides that is placed in tube interior, this pressure ring is installed on the pipe joint that is formed by insertion end and pipe.
D.B.P. 4,003,740 disclose a kind of pipe joint, and one of them inserts the end and is pushed into a pipe, and an inflexibilty ring is installed on this pipe joint.The pipe that uses in a kind of like this pipe joint must be very flexible, makes this inflexibilty ring to be contained on the pipe joint.A kind of like this inflexibilty ring does not produce enough pressure in all cases.
Danish Patent 135,908 also discloses a kind of pipe pipe joint, and one of them inflexibilty pressure ring is installed in one by inserting on the pipe joint that end and pipe form.This insertion end comprises two protuberances, loads onto pressure ring therebetween.A protuberance is following, and pressure ring pushes away on this time protuberance.Pipe must be made with extremely resilient material, and its surrender also can be pushed away the inflexibilty pressure ring thus on following protuberance.This ring does not produce pressure, but pipe joint guarantee by protuberance that firmly these protuberances are arranged on and insert on the end, when pipe joint was subjected to stress, ring compressed facing to protuberance.
Swedish patent 501,579 discloses a kind of pipe joint, and the thermal expansion coefficient that wherein inserts an end and a locking ring is chosen such that and makes the thermal expansion coefficient of this locking ring greater than the expansion coefficient of the material that inserts the end.This pipe joint can keep closely in different temperatures thus.Secondly, in order to seal this pipe joint, insert the end and comprise cyclic lug.Thereby this pipe joint is quite tight, but is for example connecting under the situation of big-inch pipe, usually needs even simple tube joint more closely.
D.B.P. 3,608,843 and 2,510,886 with German utility model G 8,802,366.4 disclosed pipe joints in, pipe pushes away and is inserting on the end, and an inflexibilty pressure ring pushes away on this pipe joint.This pipe also must be very flexible, so that can obtain gratifying pipe joint.These pipe joints are also very complicated, are not to obtain enough pipe joint closely.
Finnish patent 33,301 discloses a kind of pipe joint, and one of them pressure sleeve shrinks on pipe joint.The manufacturing of this pipe joint is not only difficult but also complicated, so it is not too useful.
Finnish patent application book 954,549 discloses a kind of pipe joint, wherein inserts end and pipe and utilizes hydraulic pressure insertion device to push mutually.Before connecting, tube end is expanded.This method is trouble in this respect.
European patent 0,530,387 disclose a kind of pipe joint, and a pipe and a flexible loop that is arranged on the pipe expand simultaneously, are placed in subsequently to insert on the end.The internal diameter that inserts end and pipe can equate at this, but this method is complicated and trouble, therefore is not suitable for (for example) and connects big-inch pipe.
U. S. Patent 2,433,602 disclose a kind of pipe joint, and wherein a kind of pressure ring made from rubber is contained in pipe and inserts on the end.In order to guarantee tightness, a metal openings ring is placed on the rubber ring.Rubber must be very soft easily deformable, make the metal openings ring on pipe joint to compress effect enough strong.This pipe joint is difficult to make.
The purpose of this invention is to provide a kind of method and a kind of pipe joint of simple connection pipe, also be used to connect big-inch pipe.
The inventive method is characterised in that, the pressure ring material therefor is the plastics of low creep, so the elastic pressure ring guarantees the long-term tightness of pipe joint with the contractile force of pipe.
Secondly, pipe joint of the present invention is characterised in that elastic pressure ring material therefor is the plastics of low creep, so this pressure ring guarantees the long-term tightness of pipe joint with the contractile force of pipe.
Basic thought of the present invention is, its external diameter inserts this pipe greater than the insertion end of ips, and a flexible pressure ring is contained on this pipe joint subsequently, the internal diameter of ring normally less than insert the end and with the external diameter of its pipe that pushes mutually.Secondly, the material of pressure ring is the plastics of low creep.The thought of preferred embodiment is, is provided with an inclined-plane in the inner end portion of pipe, thereby is convenient to insert this insertion end.
Advantage of the present invention is that pipe joint simply is easy to make.Pipe joint intensity is big and tight.When the tube end place is provided with an inclined-plane, insert the end and can easily insert pipe, and the internal diameter of insertion end can equals ips.
The present invention will describe in the accompanying drawings in more detail, among the figure:
Fig. 1 represents the state before pipe connects;
Fig. 2 represents according to pipe joint of the present invention;
Fig. 3 a to 3d is a sketch of making the method for pipe joint;
Fig. 4 represents the elasticity of two kinds of materials; And
Fig. 5 represents according to another kind of pipe joint of the present invention.
Fig. 1 and 2 represents pipe 1 and inserts end 2.The resilient slightly material of pipe 1 usefulness is made, for example rubber or plastics, and making before the pipe joint, the internal diameter of pipe 1 can be less than the external diameter that inserts the end.The material that inserts end 2 is chosen such that to be exactly to make its croop property be equal to or better than the material of pipe 1.Therefore insert end 2 can (for example) with etch-proof metal, make with the crosslinked polyethylene of glass fibre enhancing or plastics such as polysulfones with high elastic modulus.Inserting end 2 can (for example) be the end of an a kind of fitting or a pipe also, as the end of a pipe identical with pipe 1.
Before making pipe joint, the end of pipe 1 can beveling 3, represents with dotted line among Fig. 1.This inclined-plane is convenient to pipe 1 is inserted in insertion end 2 widely.Consider inclined-plane 3, the internal diameter that inserts end 2 can equal the internal diameter of pipe 1.After inserting end 2 and pipe 1 and having pushed mutually, pressure ring 4 is contained on the pipe joint, to guarantee its tightness.The internal diameter of pressure ring is usually less than the external diameter of insertion end 2 that pushes mutually and pipe 1.But pressure ring 4 is made of plastic, so it can be contained on the pipe joint.In the time of on being positioned at pipe joint, pressure ring 4 shows the tendency of returning its normal size, compresses this pipe joint thus and guarantees its tightness.Various types of plastics can be as the material of pressure ring 4.A good pressure ring 4 has quite high Young's modulus, favorable extensibility energy and good especially croop property usually, and promptly it has low creep.The creep of pressure ring 4 is so low, so that does not just need additional pressure except pressure ring 4: such pressure ring 4 guarantees the long-term tightness of pipe joint with the contractile force of pipe 1.If this croop property is good especially, pipe 1 so to be connected just not necessarily needs good croop property.A kind of proper method of measuring creep ratio is proposed in ISO 9967.The conventional method that reduces creep is to add reinforcing material in material, as glass fibre.But this can not be used for pressure ring 4 of the present invention, can weaken extension property because add glass fibre, so that material can not bear the required big specific elongation of pressure ring 4.The proper method of a kind of detected pressures ring material strain has been described in the 6th " research of the critical specific elongation of partially crystallizable shape thermoplastic materials " (the German edition published in 1975) of " artificial material " the 65th volume of people such as professor GMenges.This book has been described a kind of fast method of critical strain of the constructed in plastic material that is no more than good design of definite plastics.For example, the material of describing among Fig. 41 is a kind of good material.Material 1 has than material 2 higher elasticity but lower creep.Be that the short-term modulus of creep of pressure ring 4 is equal to or higher than the modulus of creep of pipe 1 ideally.Equally, the long-term creep modulus of pressure ring 4 equals the modulus of creep of tubing at least.Preferably the long-term creep modulus of pressure ring material (100 years values) is not less than 50% of 24 one hour values.A kind of excellent material of pressure ring 4 is crosslinked polyethylenes, i.e. PEX, and it is linked to gel fraction at least 60%.In order to increase the initial pressure of ring, pressure ring can be made with the orientation PEX that original value is doubled.Polyketone also is a kind of suitable material of pressure ring 4, because it has the high Young's modulus and the elastic strain limit of extra-high-speed.The diameter of pipe 1 can be quite big, for example the hundreds of millimeter.
At the end that inserts the end can be a protuberance 2a, and pressure ring 4 can push away on protuberance 2a because it is flexible.But after pipe joint was finished, protuberance 2a prevented that effectively pressure ring 4 from sliding off pipe joint.The selection of pressure ring 4 materials and the height of protuberance 2a are to determine that like this make whole processing of pressure ring 4 all occur in the elastic region, pressure ring 4 trends towards returning its normal size after extension thus.Secondly, insert end 2 a protuberance 2b can be set, correspondingly, pressure ring 4 can be provided with a groove 4a, makes pressure ring 4 and insertion end 2 can utilize protuberance 2b and groove 4a firmly to pin vertically.The axial length of pressure ring 4 for example can be equal to or greater than and insert end 2.But most preferably, the length of pressure ring 4 is substantially equal to insert the targeting part of end 2, as shown in Figure 2.Pressure ring 4 also can be taper, and at this moment, this conical surface is for example in flanged joint, as the stop surface to pipe flange.Pipe flange is more closely facing to pipe joint compaction pressure ring 4 then.
The height of protuberance 2a is definite like this, make when pressure ring 4 on protuberance 2a, push away out-of-date, the diameter expansion of pressure ring 4, thus the end of being convenient to pressure ring 4 slips on protuberance 2b.
The outer surface of the internal surface of pressure ring 4 or insertion end 2 or both can be provided with friction groove or burr, to increase friction.If desired, for example can sand milling or handles with other method in these surfaces, to increase the roughness on surface.In some cases, the Young's modulus of pipe 1 to be connected is very high, makes the material of pipe 1 be not easy to enter in the possible friction groove that inserts 2 places, end.This moment, the end of pipe 1 can be heated slightly, reduced Young's modulus thus and made material engaging friction groove, connected frictional force thereby increase.
Insert end 2 and also can comprise annular seal 5.The material of Sealing 5 is plastics preferably, and as PEX (crosslinked polyethylene) or LDPE (low density polyethylene), because the working life of plastics is known fairly good, so also can predict quite exactly the working life of pipe joint.The material of Sealing 5 is softer than pipe to be connected 1.Pressure ring 4 also can comprise the material that can heat, so that pressure ring is welded on the pipe joint.For example, can in pressure ring 4, mix a kind of like this pigment, this pigment can decompose owing to the effect of the heat higher than the maximum operating temp of pipe, and this pigment is pined for reacting at this, and therefore the pipe joint of heating has a kind of same never color than the pipe joint that does not heat.Be easy to after this makes detect, whether a pipe joint can be opened, and perhaps whether it welded, because the color of the pipe joint of a welding changes.The internal surface of pressure ring 4 can comprise some burrs, and they are arranged to aim at the Sealing 5 in the pipe joint of finishing.These burrs then compress Sealing 5, make them tightr.The tightness of pipe joint is guaranteed by the frictional force of the recess edge of Sealing 5, inserting member end 2 and inserting member end on the inboard of pipe 1, encircles 4 assurances that pushed away required deformation-energy on protuberance 2a and utilize the pinning of groove 4a and protuberance 2b with pressure ring 4 and be stressed in the frictional force of ring 4 the burr that is stressed on the outside of pipe 1.If pressure ring 4 is not welded on the pipe joint, this pipe joint bears tension force really so, but it can take apart, and method is at first to remove pressure ring 4 around pipe joint.
Fig. 3 a to 3d is the sketch that pipe joint is made in expression.The label of Fig. 3 a to 3d is corresponding to the label of Fig. 1 and Fig. 2.Pipe 1 and insertion end 2 are fixed on the support, preferably for example are fixed on the welding tractor, and for clarity sake this support is not shown in figures.In the first step, the end of pipe 1 utilizes expander cone 6 to make an inclined-plane in the inboard.Securing means 7 is connected pipe 1 and inserts on the end 2.Securing means 7 is connected on the driver 8, and driver for example can be oil hydraulic cylinder or some other driver known per se.Pipe 1 and insertion end 2 utilize driver 8 to move towards each other, and they are placed in wherein mutually.Discharge the pressure of securing means 7 then from pipe 1.But securing means 7 still moves towards tie point.Securing means 7 is made like this, makes that it can movement pressure ring 4 in this stage, makes securing means 7 that pressure ring 4 is pushed away on pipe joint.Have larger-diameter occasion at pipe, therefore pipe connects can not only fast but also reliably.
Fig. 5 represents that another kind of pipe according to the present invention connects.Pipe 1 and the clamping of inserting between the end 2 can significantly improve owing to configuration one clamping element between them, this clamping element such as rubber ring or opening metal ring, two sides sand paper or wire netting 9.When using clamping element, insert end 2 outer surface in addition can be very straight, and pipe joint is still enough closely.Wire netting 9 for example can form with wire or with the tinsel punching out.Main feature is that the material of wire netting 9 is a metal and net comprises hole 9a.This clamping element is made with the material that can heat, and therefore, when pipe joint is heated and pipe 1 and when inserting end 2 welding, they are fixed to one another.When for example using wire netting 9, pipe joint can heat with the inductance heating, and wire netting 9 is heated thus, and plastics around the fusion for example weld insertion end 2 and pipe 1 at hole 9a place.Therefore pipe joint can not be taken apart.Use the inductance heating effective especially according to the present invention to pipe joint because except wire netting 9, pipe joint no longer comprise any can be by the metal of inductive effect heating.
The end of pressure ring 4 can be provided with an inclined-plane 10.This inclined-plane 10 helps pressure ring 4 is delivered on the protuberance 2b widely.
Accompanying drawing only is used for illustration invention thought with relevant description.The invention details can change in the claim scope.Therefore, the pipe joint that two pipes of a joint are used also can be made like this, make and insert a pipe in each end that inserts end 2, and a flexible pressure ring is pushed on this pipe joint, makes this pressure ring compress this two pipes facing to this insertion end.
Claims (14)
1. method that forms pipe joint, wherein, pack into mutually in insertion end (2) in an elasticity pipe (1) and the pipe to be placed in (1), insert the internal diameter of the external diameter of end (2) greater than pipe (1), and after inserting end (2) and pipe (1) and packing into mutually, an initial inside diameter is installed on pipe (1) and the insertion end (2) less than the flexible pressure ring (4) that is contained in pipe (1) external diameter that inserts end (2), it is characterized in that, the used material of pressure ring (4) is the plastics of low creep, so elastic pressure ring (4) guarantees the long-term tightness of pipe joint with the contractile force of pipe (1).
2. the method for claim 1 is characterized in that, the used material of this pressure ring is a crosslinked polyethylene.
3. a method as claimed in claim 1 or 2 is characterized in that, packs into mutually before on an inboard formation inclined-plane (3), the end of pipe (1) at pipe (1) and insertion end (2).
4. any one described method in a kind as the above-mentioned claim, it is characterized in that, pipe (1) with insert end (2) on be connected securing means (7), securing means (7) promotes toward each other, make pipe (1) and insertion end (2) settle wherein mutually, impacting force from pipe (1) release securing means (7) makes securing means (7) move towards tie point then, makes securing means (7) simultaneously flexible pressure ring (4) be pushed away on pipe joint.
5. any one described method in a kind as the above-mentioned claim, it is characterized in that, between insertion end (2) and pipe (1), a clamping element is set, this clamping element is made with heatable material, and pipe joint is heated, make pipe (1) and insertion end (2) clamp each other, pipe joint can not be opened.
6. pipe joint, comprise that an elasticity pipe (1), one are placed in the insertion end (2) of tube interior and flexible pressure ring (4) that one is placed in these parts outsides is formed, this pressure ring is contained on the pipe joint that is formed by insertion end (2) and pipe (1), it is characterized in that, the used material of pressure ring (4) is the plastics of very low creep, makes this elastic pressure ring (4) guarantee the long-term tightness of pipe joint with the contractile force of pipe.
7. a pipe joint as claimed in claim 6 is characterized in that, the used material of pressure ring (4) is a crosslinked polyethylene.
8. one kind as claim 6 or 7 described pipe joints, it is characterized in that, there is a protuberance (2a) tail end of inserting end (2), installation flexible pressure ring (4) it on.
9. one kind as any one described pipe joint in the claim 6 to 8, it is characterized in that, before making pipe joint the end of pipe (1) in a formation inclined-plane (3).
10. one kind as any one described pipe joint in the claim 6 to 9, it is characterized in that, inserts end (2) and is provided with plastic seal (5).
11. one kind as any one described pipe joint in the claim 6 to 10, it is characterized in that, insert that end (2) is provided with a protuberance (2b) and pressure ring (4) is provided with a corresponding grooves (4a), so pressure ring (4) can utilize described protuberance (2b) and groove (4a) to be locked at vertically on the insertion end (2).
12. pipe joint as claimed in claim 11, it is characterized in that, there is a protuberance (2a) tail end of inserting end (2), it is definite highly like this, make when pressure ring (4) is contained on the protuberance (2a), the diameter expansion of pressure ring (4), thus slip is gone up at protuberance (2b) in the end that helps pressure ring (4).
13. one kind as any one described pipe joint in the claim 6 to 12, it is characterized in that, insert end (2) and pipe (1) but between settle the clamping element that the usefulness heating material is made, this pipe joint is heated, and makes that insertion end (2) and pipe (1) are fastened to each other.
14. one kind as any one described pipe joint in the claim 6 to 13, it is characterized in that, but this pipe joint is made with heating material, and pressure ring (4) comprises the received heat effect and the pigment that decomposes makes the color of heat pipe joint be different from the not color of heat pipe joint.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FI971140A FI102635B (en) | 1997-03-18 | 1997-03-18 | Process for making a pipe connection and a pipe connection |
| FI971140 | 1997-03-18 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1250512A true CN1250512A (en) | 2000-04-12 |
Family
ID=8548419
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN98803441A Pending CN1250512A (en) | 1997-03-18 | 1998-03-12 | Method for making a pipe connection, and a pipe connection |
Country Status (7)
| Country | Link |
|---|---|
| EP (1) | EP0968385A1 (en) |
| JP (1) | JP2001519872A (en) |
| CN (1) | CN1250512A (en) |
| AU (1) | AU6402698A (en) |
| CA (1) | CA2283664A1 (en) |
| FI (1) | FI102635B (en) |
| WO (1) | WO1998041790A1 (en) |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104395665A (en) * | 2012-06-20 | 2015-03-04 | 乔治费希尔Jrg股份公司 | Clamp connection for pipes |
| CN104907991A (en) * | 2015-04-27 | 2015-09-16 | 柳州市俊杰汽配制造有限公司 | Rubber pipe and connector assembling and locking device |
| CN105156806A (en) * | 2015-09-17 | 2015-12-16 | 北京精密机电控制设备研究所 | Hydraulic pipeline flexible connection structure and method suitable for compact space |
| CN105333262A (en) * | 2015-11-26 | 2016-02-17 | 华英伦科技(宁波)有限公司 | Cold-expanding, cold-hooping and self-sealing connecting type plastic floor heating pipe fitting |
| CN107923562A (en) * | 2015-08-18 | 2018-04-17 | 德国诺玛公司 | Attachment device and the pressure ring for attachment device |
| CN110252514A (en) * | 2019-06-21 | 2019-09-20 | 安徽中能矿机制造有限公司 | Total cross-section gas-lifting type micro-bubble flotation machine and its operating method |
| CN111578020A (en) * | 2020-05-23 | 2020-08-25 | 邵立坤 | Easily-installed hydraulic pipe joint for engineering machinery |
| CN112543849A (en) * | 2018-07-24 | 2021-03-23 | 诚信全球公司 | End fitting for pipe construction |
| CN113351773A (en) * | 2020-03-06 | 2021-09-07 | 杉野机械股份有限公司 | Pipe expanding and joining method |
Families Citing this family (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3549185B2 (en) * | 1999-07-07 | 2004-08-04 | 株式会社清水合金製作所 | A method and apparatus for joining a synthetic resin pipe and a bending prevention guide used for the same. |
| JP2004239412A (en) * | 2003-02-07 | 2004-08-26 | Tokai Rubber Ind Ltd | Connection structure of resin tube and connection method of resin tube |
| DE202008015768U1 (en) * | 2008-11-27 | 2010-04-08 | Mann+Hummel Gmbh | Hollow plastic part |
| DE102011007744A1 (en) | 2011-04-20 | 2012-10-25 | Mahle International Gmbh | Hollow body with connection piece |
| US9523451B1 (en) * | 2013-02-15 | 2016-12-20 | Elkhart Products Corporation, C/O Aalberts Industries N.V. | Utilizing a visual indicator to determine security of a pipe fitting |
| GB2521226A (en) | 2013-12-16 | 2015-06-17 | Watson Marlow Bredel B V | An end fitting for a tube housed by a cavity and a method of installing a tube in a cavity |
| US20150362109A1 (en) * | 2014-06-12 | 2015-12-17 | Buchanan Consulting LLC | Tube fitting connection system and method |
| US9975289B2 (en) | 2016-07-27 | 2018-05-22 | Black & Decker Inc. | PEX expanding tool |
| US11543065B2 (en) | 2016-09-02 | 2023-01-03 | Zurn Industries, Llc | Extruded cold-expansion compression collar |
| US11541581B2 (en) | 2016-09-02 | 2023-01-03 | Zurn Industries, Llc | Injection molded cold-expansion compression collar |
| US11054076B2 (en) | 2016-11-04 | 2021-07-06 | Zurn Industries, Llc | Reinforcing ring with sleeve |
| CN107401647A (en) * | 2017-08-15 | 2017-11-28 | 日丰企业（佛山）有限公司 | Pipe fitting connecting method and attachment structure |
| IT202100031232A1 (en) * | 2021-12-14 | 2023-06-14 | Hutchinson S R L | CONNECTION FOR FLUID WITH TWO WELDERS |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2433602A (en) * | 1947-03-26 | 1947-12-30 | Flex O Tube Company | Reusable type hose coupling |
| US3977702A (en) * | 1975-03-13 | 1976-08-31 | Hydrotech International, Inc. | Pipe coupling with retrievable setting means |
| AT377346B (en) * | 1983-05-05 | 1985-03-11 | Poloplast Kunststoffwerk | CLAMP RING |
| DE3424675C2 (en) * | 1984-07-05 | 1986-10-16 | Rasmussen Gmbh, 6457 Maintal | Hose coupling |
-
1997
- 1997-03-18 FI FI971140A patent/FI102635B/en active IP Right Grant
-
1998
- 1998-03-12 JP JP54016698A patent/JP2001519872A/en active Pending
- 1998-03-12 CA CA002283664A patent/CA2283664A1/en not_active Abandoned
- 1998-03-12 AU AU64026/98A patent/AU6402698A/en not_active Abandoned
- 1998-03-12 EP EP98909522A patent/EP0968385A1/en not_active Withdrawn
- 1998-03-12 CN CN98803441A patent/CN1250512A/en active Pending
- 1998-03-12 WO PCT/FI1998/000223 patent/WO1998041790A1/en not_active Application Discontinuation
Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104395665A (en) * | 2012-06-20 | 2015-03-04 | 乔治费希尔Jrg股份公司 | Clamp connection for pipes |
| CN104395665B (en) * | 2012-06-20 | 2016-12-07 | 乔治费希尔 Jrg 股份公司 | Clamp connection for pipeline |
| CN104907991A (en) * | 2015-04-27 | 2015-09-16 | 柳州市俊杰汽配制造有限公司 | Rubber pipe and connector assembling and locking device |
| CN104907991B (en) * | 2015-04-27 | 2017-04-19 | 柳州市俊杰汽配制造有限公司 | Rubber pipe and connector assembling and locking device |
| CN107923562A (en) * | 2015-08-18 | 2018-04-17 | 德国诺玛公司 | Attachment device and the pressure ring for attachment device |
| CN105156806A (en) * | 2015-09-17 | 2015-12-16 | 北京精密机电控制设备研究所 | Hydraulic pipeline flexible connection structure and method suitable for compact space |
| CN105333262A (en) * | 2015-11-26 | 2016-02-17 | 华英伦科技(宁波)有限公司 | Cold-expanding, cold-hooping and self-sealing connecting type plastic floor heating pipe fitting |
| CN112543849A (en) * | 2018-07-24 | 2021-03-23 | 诚信全球公司 | End fitting for pipe construction |
| CN112543849B (en) * | 2018-07-24 | 2022-08-30 | 诚信全球公司 | End fitting for pipe construction |
| CN110252514A (en) * | 2019-06-21 | 2019-09-20 | 安徽中能矿机制造有限公司 | Total cross-section gas-lifting type micro-bubble flotation machine and its operating method |
| CN113351773A (en) * | 2020-03-06 | 2021-09-07 | 杉野机械股份有限公司 | Pipe expanding and joining method |
| CN111578020A (en) * | 2020-05-23 | 2020-08-25 | 邵立坤 | Easily-installed hydraulic pipe joint for engineering machinery |
| CN111578020B (en) * | 2020-05-23 | 2021-10-26 | 浙江帕茨精工股份有限公司 | Easily-installed hydraulic pipe joint for engineering machinery |
Also Published As
| Publication number | Publication date |
|---|---|
| AU6402698A (en) | 1998-10-12 |
| FI971140A (en) | 1998-09-19 |
| JP2001519872A (en) | 2001-10-23 |
| EP0968385A1 (en) | 2000-01-05 |
| FI102635B1 (en) | 1999-01-15 |
| FI102635B (en) | 1999-01-15 |
| CA2283664A1 (en) | 1998-09-24 |
| WO1998041790A1 (en) | 1998-09-24 |
| FI971140A0 (en) | 1997-03-18 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN1250512A (en) | Method for making a pipe connection, and a pipe connection | |
| US4832382A (en) | Coupling device | |
| CA1263425A (en) | Plastic encased gasket | |
| US5096231A (en) | Flexible fluid conduit assembly | |
| EP0855546B1 (en) | Tube joint | |
| AU660603B2 (en) | Apparatus for attaching a hose to a fitting | |
| KR970703512A (en) | A FRICTION SEALED COUPLING ASSEMBLY | |
| CN1478185A (en) | Coupling adapter and connector assembly | |
| WO1996010712A1 (en) | A universal pipe coupling with a u-shaped clip member | |
| CA2331784A1 (en) | Coupling sleeve for high-pressure pipe | |
| CA2224000A1 (en) | Tube fitting and assembly method | |
| CA2266500C (en) | Conduit connector and method | |
| CA1243697A (en) | Airspring with pneumatic fitting | |
| CA1255481A (en) | Pipe joining method | |
| JPH092574A (en) | Tank connector assembly | |
| JPH092575A (en) | Manufacture of tank and connector assembly of that tank | |
| CA1298591C (en) | Coupling device | |
| CN2140014Y (en) | Expanding jointing piece of pipeline | |
| MXPA00003784A (en) | Wedge thread with torque shoulder. | |
| FI112275B (en) | A pipe joint | |
| KR200184274Y1 (en) | A piping reducer | |
| GB2293422A (en) | A method of joining a conduit to a second conduit and a seal | |
| US11767869B2 (en) | Expansible fixing plug | |
| CN2304798Y (en) | Right-angle steel plastic pipe joint | |
| GB2264761A (en) | Integral pipe coupling with reflex pipe end |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |