CN1077463C - Method and apparatus for producing helically wound cock-seam tubing - Google Patents
Method and apparatus for producing helically wound cock-seam tubing Download PDFInfo
- Publication number
- CN1077463C CN1077463C CN96192419A CN96192419A CN1077463C CN 1077463 C CN1077463 C CN 1077463C CN 96192419 A CN96192419 A CN 96192419A CN 96192419 A CN96192419 A CN 96192419A CN 1077463 C CN1077463 C CN 1077463C
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- Prior art keywords
- mentioned
- lock joint
- lock
- pipe
- belt
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- Expired - Fee Related
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
- B21C37/00—Manufacture of metal sheets, bars, wire, tubes or like semi-manufactured products, not otherwise provided for; Manufacture of tubes of special shape
- B21C37/06—Manufacture of metal sheets, bars, wire, tubes or like semi-manufactured products, not otherwise provided for; Manufacture of tubes of special shape of tubes or metal hoses; Combined procedures for making tubes, e.g. for making multi-wall tubes
- B21C37/12—Making tubes or metal hoses with helically arranged seams
- B21C37/121—Making tubes or metal hoses with helically arranged seams with non-welded and non-soldered seams
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Rigid Pipes And Flexible Pipes (AREA)
- Shaping Of Tube Ends By Bending Or Straightening (AREA)
- Bending Of Plates, Rods, And Pipes (AREA)
- Metal Extraction Processes (AREA)
- Extrusion Moulding Of Plastics Or The Like (AREA)
- Forging (AREA)
- Moulding By Coating Moulds (AREA)
- Gasket Seals (AREA)
- Wire Processing (AREA)
Abstract
In a method for producing helically wound lock-seam tubing (33), a metal strip is fed to a forming head in which the tubing is formed. In order to prevent lock-seam slip, a clinching roller device (30-40) forms interlocking spaced deformations (41) on the lock-seam (37). An apparatus for such production comprises a clinching roller (30) provided with a recess (40) for forming the deformations (41) against a counter-roller.
Description
The field of the invention
The present invention is about production helically coiling pipe, particularly about produce the method and apparatus of helically coiling lock joint pipe with the panel metal band.These pipes can be used for ventiduct system as an example.
Prior art
The BP publication number is that GB2213748 discloses the machine that helically coiling lock joint pipe is produced in a kind of known being used to, and here the disclosure file is as the reference data.In this machine, metal tape is delivered to forming head by drive roller arrangement, and helically coiling lock joint pipe is processed by the pinch roll that forming head is housed.
The machine that the helically coiling pipe is produced in another kind of known being used for is disclosed in british patent specification GB1168178, wherein Fig. 3 and the different seam of 4 expressions.
The technology of relevant this class machine is known to those skilled in the art.The various machines that further develop of similar kind also can obtain on market now.Yet these machines still have some special defectives.
In the production of machinery helically coiling lock joint pipe with existing kind, lock joint has the tendency of slip, thereby causes the undesirable variation of pipe diameter.Usually the method that solves this class problem is to increase the pressure that acts on the lock joint pinch roll on the forming head.But increase clamping pressure like this and can cause damage, and can produce defective at the adjacent part of the metal tape of lock joint and processing tube.Because of the adjustment of clamping pressure is vital to the quality of lock joint and final products pipe.
Except that clamping pressure, the work of operating machines must be considered some other parameters, such as the thickness of metal tape, and lubrication, the possible wearing and tearing of the roller of different machines part.Therefore, just very high to the requirement of operating personnel's technology and experience.
Except operating personnel's technology, be difficult to avoid the slip in lock joint or skid.In process of production promptly at the forming head rear or in storage life, lifting and the delivery period of pipe, undesirable increase will appear in the diameter of pipe.Should be noted that the slip owing to lock joint, pipe diameter also undesirable reducing can occur, and caliber just reduced when for example it was subjected to external pressure.
The variation of pipe diameter is a problem always, because the pipe of sending can not satisfy user's technical specification and requirement.
When pipe being used in the ventiduct system that is loaded on different buildings, can run into some specific questions.For example, the vibration that is caused by blower fan and similar equipment can cause the slip of lock joint, thereby causes undesirable air to leak and pressure decline.Under abominable situation, the security function of the whole ventilating system of lock joint slip entail dangers to of ventilation shaft.
In ventiduct system, different joints is installed to as on the helically coiling lock joint pipe that constitutes this system's major part.These joints are bend pipe, T type member, air door, silencer etc., and they are inserted in the end of pipe usually, and the insertion portion of joint has a sealing ring to guarantee security seal.If but the diameter of undesirable increase has appearred in pipe, just there is a kind of danger, promptly the joint between joint and pipe can not enough seal, and this just may cause leakage above-mentioned or pressure decline problem, thus produce power loss and increase running cost.
In another case, joint does not have preassembled seal, and the junction between the inside of the outside of joint and pipe is filled out with the sealing purpose adhesive.Make the gap too big as undesirable increase, stick with glue agent and just can not obtain enough sealings owing to pipe diameter.Even adhesive has been fixed safely, owing to causing caliber, vibration, air pressure peak value etc. increase later on, also may go wrong.
In addition, when adopting prefabricated tubulose fastener to be added in the outside of pipe, the variation of pipe diameter also is harmful to.If changing, pipe diameter should not adopt this class device.
Summary of the present invention
The objective of the invention is to correct above-mentioned defective, a kind of method and apparatus that is used to produce helically coiling lock joint pipe is provided, it makes the lock joint slip or the risk of skidding in any direction very low or do not have at all.
Another object of the present invention provides a kind of method and apparatus that is used to produce helically coiling lock joint pipe, makes pipe keep their diameter constant storing, lift, transport, send to and be installed in the final position.
Specific purposes of the present invention provide a kind of method and apparatus, and it is easy to be installed on the existing machine.
According to first aspect of the present invention, these purposes can be reached by the method and apparatus of setting in the independent claims 1 and 9 of annex, and their most preferred embodiment and modification thereof are limited by dependent claims 2-8 and 10-19 respectively.
The present invention makes and avoids the lock joint slip to become possibility, and can obtain further advantage.
According to a significant advantage of above-mentioned first aspect is that isolated distortion from the lock joint is found out immediately: problematic pipe has a firm internal lock lock joint, thereby causes pipe diameter constant.Another advantage provides such internal lock anamorphic attachment for cinemascope and can be contained on the new engine, also can be used as an optional equipment and easily is contained on the existing machine.
According to a preferred embodiment of the present invention,, provide the wearing and tearing of the device of internal lock distortion can keep very low if the internal lock deformation processing becomes a bossing in the pipe lock joint.Preferably the pinch roll of clamp assembly has circumferential slot, and this groove has a recess that forms the lock joint bossing at least.
For reducing the danger of sliding, on each spiral coil of lock joint, has an internal lock distortion at least.
According to second aspect of the present invention, can also achieve the goal by adopting independent claims 20 and 23 method and apparatus of setting in the annex, their most preferred embodiment and distortion are limited by dependent claims 21-22 and 24-25 respectively.
Brief description of the drawings
Now with reference to example accompanying drawing invention is described as preferred embodiment.
Fig. 1 roughly illustrates a kind of machine of helically coiling lock joint pipe.
Fig. 2 roughly illustrates the clamp assembly that is installed on the machine of the present invention.
Fig. 3 illustrates the helically coiling lock joint pipe of producing with method and apparatus of the present invention.
Fig. 4 is the enlarged drawing of pipe lock joint among Fig. 3.
Fig. 5 is the enlarged drawing of lock joint section shown in Figure 3.
Fig. 6 is the partial view of pinch roll embodiment.
A recess of Fig. 7 presentation graphs 6 pinch rolls.
The part of Fig. 8 presentation graphs 6 pinch rolls one side.
Fig. 9 is the profile of Fig. 6 pinch roll, and chain-dotted line is represented lock joint.
Figure 10 is the partial view of second embodiment of pinch roll.
Figure 11 represents the fin of Figure 10 pinch roll.
Figure 12 represents the part of pinch roll one side.
Figure 13 is Figure 10 pinch roll profile, and chain-dotted line is represented lock joint.
Figure 14 represents to adopt the pipe of Figure 10 pinch roll production.
Figure 15 illustrates the amplifier section of pipe lock joint among Figure 14.
Figure 16 illustrates the amplifier section of lock joint section shown in Figure 14.
Figure 17 represents the section of the lock joint in an alternative embodiment of the invention.
Figure 18-22 expression is according to the section of various lock joints of the present invention.
Method and apparatus of the present invention mainly can be used for usually as shown in Figure 1 in this class machine.This machine basic with mention in the mode of introducing GB-A-2213748 openly in this machine of description corresponding, the part 47,48 that adds in Fig. 1 is relevant with one embodiment of the present of invention, will describe later on.
By adopting clamping device as shown in Figure 2 can improve machine shown in Figure 1.This clamping device can be installed in or be connected on the forming head.Clamping device according to first embodiment comprises a pinch roll 30 with axle 31, supports axle 31 rotationally by the bearing 32 (briefly showing) that is installed on the forming head 14 (Fig. 1).One has axle 35 secondary roller 34, by bearing 36 (briefly showing) back shaft 35 rotationally that is installed on the pipe 33 internal shaping heads 14 (Fig. 1).The lock joint 37 of pipe 33 is clipped between two rollers, 30,34 peripheries at clamping point.Clamping pressure can be regulated by device 38 (briefly showing), acts in a direction indicated by the arrow on the axle 31.
Device shown in Figure 2 is by following situation work.The metal tape with longitudinal edge portions 16 12 by roller 13 (Fig. 1) processing is processed on forming head.For avoiding the slip of lock joint, the distortion 41 that is shaped by the recess 40 of pinch roll 30 makes engagement edge part 16 distortion and internal locks.In first embodiment shown in Figure 2, distortion at interval 41 is lock joint 37 ledges.In the fastening lock joint of this mate 16, thereby make pipe 33 have fixing diameter.The slip of lock joint 37 also is prevented.
Be out of shape a relevant important advantage of this feature with the internal lock in lock joint 37, be to provide a kind of shape of ledge, thereby the wear intensity that can be used in the clamping device of machining deformation remains on the very low magnitude of known device that is used for producing helically coiling lock joint pipe.
Heave or the distortion 41 of projection is represented more in detail in Figure 41, lock joint 37 as shown in Figure 5.
The recess 40 of the pinch roll 30 of first embodiment is shown specifically in Fig. 6-9, and recess 40 is wideer than groove 39 on the thickness direction of pinch roll 30.The section of Fig. 9 is illustrated in the distortion 41 of lock joint in the recess 40.
Certainly, the internal lock deformation energy of lock joint 37 is obtained by alternate manner.Second embodiment of pinch roll 30 has been shown in Figure 10-12.In this embodiment, do not have recess but in groove 39, have a horizontal fin 42.On the clamping point of roller 30,34 (Fig. 2), fin 42 is pressed into lock joint 37, therefore forms a pit.Fin 42 can have same width with groove 39.
Section shown in Figure 13 represents the internal lock distortion 43 of lock joint is how to process in the groove 39 of pinch roll 30.Fin 42 forms a pit in lock joint.
Figure 14 represents that one has with the interval pit of the pinch roll of second embodiment processing or is out of shape 43 the pipe with lock joint 37 33.Figure 15 illustrates the details of distortion 43.Pit 43 must be deeply to being enough to form enough internal locks between the marginal portion of lock joint 37.
In the embodiment of above-mentioned two pinch rolls, in each spiral turns of lock joint 37, has an internal lock distortion 42,43 at least.If yet require very strong internal lock effect, in each spiral turns, also can process a plurality of distortion 42,43.
As the substitute to above-mentioned internal lock distortion 41,43, the surface of the marginal portion 16 with 12 can have annular knurl 45, thereby meshes for bringing each other to rub in the clamp operation of processing lock joint 37, as shown in figure 17.Annular knurl 45 is processed on the marginal portion by the device 46 that Figure 17 briefly shows, and annular knurl preferably adopts roller 13 as shown in Figure 1 to process in advance.This knurling roller (not shown) can be driven.
Another aspect of the present invention is shown in Figure 18-22.In this case, a flexible strap 47 is pressed into lock joint 37 as rubber strip, by suitable adjustable clamp compaction forces, will play an effect that increases friction element between with 12 hook-type marginal portion 16 with 47, thereby the internal lock effect is provided.As shown in the figure, the flexibility band of compression can be inserted in the diverse location of curved edge part 16.
Owing to be with 47 entirely in lock joint, thereby can reach splendid sealing effectiveness.With 47 insert with lock joint 37 that forming head 14 links to each other in.That preferably will insert is carried by the spool 48 that is contained in machine with 47.In Fig. 1, briefly show spool 48.
Because with 47 friction effect, the slip of lock joint can be avoided, guarantee good sealing simultaneously.Has round section with 47 in insertion with before being pressed into lock joint.
Insertion can be joined together with the internal lock distortion 41,43 that is obtained by above-mentioned pinch roll 30 with 47.The embodiment that replaces
According to the embodiment of above-mentioned pinch roll, pinch roll is placed in tube exterior, and secondary roller is placed in tube interior.Yet pinch roll is placed in the pipe, and secondary roller is placed in outside the pipe equally also can obtain desired pit or distortion.In order to both can be placed on the circumference of pinch roll, also can be placed on the circumference of secondary roller at the hook spare (as a recess or a fin) that the internal lock distortion is provided in the lock joint.In addition, on pinch roll or secondary roller, can have more than one recess or fin.Important thing is to reach desirable internal lock effect.
The embodiment of two pinch rolls is joined together, and such pinch roll not only has above-mentioned recess but also have above-mentioned fin, and this also is good.
Claims (24)
1. a method of producing helically coiling lock joint pipe by the metal tape with longitudinal edge portions (16) (12) may further comprise the steps: above-mentioned belt (12) is delivered to a forming head (14); Upward above-mentioned belt (12) is processed into spirality at above-mentioned forming head (14), the above-mentioned marginal portion (16) of above-mentioned spiral processing belt this moment (12) enters and is meshing with each other; The above-mentioned engagement edge part (16) that clamps above-mentioned belt (12) is to process the lock joint (37) by the helically coiling on the pipe (33) of above-mentioned forming head (14) processing; Above-mentioned helically coiling lock joint pipe (33) is sent above-mentioned forming head (14); It is characterized in that: isolated distortion (41) is provided in above-mentioned lock joint (37), live in to state the above-mentioned engagement edge part (16) of the above-mentioned belt (12) of lock joint (37) with internal lock, the internal lock deformation processing becomes along the isolated bossing of lock joint (37) (41).
2. according to the process of claim 1 wherein that above-mentioned internal lock bossing (41) is to provide in the operation of carrying out jointly with above-mentioned forming head (14).
3. according to the method for claim 1 or 2, wherein in every circle spiral lock joint (37), provide an internal lock bossing (41) at least.
4. become horizontal according to the process of claim 1 wherein that above-mentioned internal lock bossing (41) is made with lock joint (37).
5. the device by the metal tape with longitudinal edge portions (16) (12) production helically coiling lock joint pipe comprises: the device (11) that above-mentioned belt is transported to forming head (14); At the last intermeshing device in above-mentioned marginal portion (16) that above-mentioned belt (12) is processed into spiral form and makes above-mentioned spiral forming band (12) of above-mentioned forming head (14); Clamp the above-mentioned marginal portion (16) of above-mentioned belt (12), go up the clamp assembly (30,34) of processing helically coiling lock joint (37) with the pipe of processing at forming head (14) (33); Above-mentioned helically coiling lock joint pipe (33) is exported the device of above-mentioned forming head (14); It is characterized in that comprising in order to go up the above-mentioned engagement edge part (16) of the above-mentioned belt of internal lock (12) device (30 of distortion (41) at interval is provided in above-mentioned lock joint (37) in above-mentioned lock joint (37), 34,40), the internal lock distortion is the isolated part (41) of the projection of lock joint (37).
6. according to the device of claim 5, wherein above-mentioned anamorphic attachment for cinemascope (30,34,40) comprise a rotating pinch roll (30) and a rotating secondary roller (34) with periphery with periphery, above-mentioned lock joint (37) is clipped in above-mentioned roller (30 at clamping point, 34) between the above-mentioned periphery, wherein an above-mentioned roller (30) provides the device (40) of above-mentioned internal lock bossing (41) in the above-mentioned lock joint (37) that has on its periphery at above-mentioned clamping point.
7. according to the device of claim 6, wherein above-mentioned pinch roll (30) has circumferential slot (39), and this trough comprises at least one recess (40), in order to the internal lock bossing (41) of lock joint (37) to be provided.
8. according to the device of claim 7, wherein above-mentioned recess (40) laterally is placed in the circumferential slot (39) of pinch roll (30).
9. according to the device of claim 6, wherein above-mentioned pinch roll (30) is placed in the outside of the pipe of processing (33), and above-mentioned secondary roller (34) is placed in the inside of the pipe of processing (33).
10. according to the device of claim 6, wherein above-mentioned pinch roll (30) and above-mentioned secondary roller (34) have the axle (31,35) that is supported rotationally by above-mentioned forming head (14) respectively.
11., also comprise in order to regulate the device (38) of clamping pressure between the above-mentioned roller (30,34) according to the device of claim 6.
12. according to any one device of claim 5-11, wherein anamorphic attachment for cinemascope (30,34,45) is arranged to connect together with forming head (14).
13. the method by the metal tape with longitudinal edge portions (16) (12) production helically coiling lock joint pipe comprises the following steps: above-mentioned belt (12) is delivered to forming head (14); Above-mentioned belt (12) is processed into spirality on above-mentioned forming head (14), the above-mentioned marginal portion (16) of above-mentioned spiral forming band this moment (12) enters and is meshing with each other; Clamp the above-mentioned engagement edge part (16) of above-mentioned belt (12), the lock joint (37) of going up the processing helically coiling with the pipe (33) of processing in above-mentioned forming head (14); Above-mentioned helically coiling lock joint pipe (33) is sent above-mentioned forming head (14); It is characterized in that: flexibility band (47) is inserted above-mentioned lock joint (37); Compress the above-mentioned belt (47) in the above-mentioned lock joint (37), with the above-mentioned marginal portion (16) of the above-mentioned belt (12) in the friction above-mentioned lock joint of internal lock (37).
14. according to the method for claim 13, wherein above-mentioned belt (47) runs through above-mentioned helically coiling lock joint (37).
15. according to the method for claim 13 or 14, wherein above-mentioned pressurization is carried out when clamp operation.
16. the device by the metal tape with longitudinal edge portions (16) (12) production helically coiling lock joint pipe comprises: the device (11) of above-mentioned belt (12) being delivered to forming head (14); Upward above-mentioned belt (12) is processed into spirality and makes the above-mentioned marginal portion (16) of above-mentioned spiral forming band (12) enter intermeshing device at above-mentioned forming head (14); The above-mentioned engagement edge part (16) that clamps above-mentioned belt (12) goes up the clamp assembly (30,34) of processing helically coiling lock joint (37) with the pipe (33) of processing in above-mentioned forming head (14); Above-mentioned helically coiling lock joint pipe (33) is sent the device of above-mentioned forming head (14); It is characterized in that comprising a flexible band (47) is inserted the device of above-mentioned lock joint (37); Compress above-mentioned belt (47) in the above-mentioned lock joint (37) with the device of the above-mentioned marginal portion (16) of above-mentioned belt (12) in the friction above-mentioned lock joint of internal lock (37).
17., also comprise the above-mentioned clamping device that compresses work that is used for above-mentioned belt (47) according to the device of claim 16.
18. according to the device of claim 16 or 17, wherein above-mentioned belt (47) has circular section before insertion, and is made of elastomeric material.
19. helically coiling lock joint pipe of producing by the metal tape with longitudinal edge portions (16) (12), be locked in this longitudinal edge portions in the spiral lock joint (37), it is characterized in that: this helically coiling lock joint (37) has the bossing (41) that separates, and this bossing (41) pins the internal lock marginal portion (16) of belt (12) in the lock joint (37).
20., in spiral lock joint (37), comprise an internal lock bossing (41) at least according to the pipe of claim 19.
21. according to the pipe of claim 19 or 20, wherein above-mentioned internal lock bossing (41) is made with lock joint (37) and is become horizontal.
22. helically coiling lock joint pipe of producing by the metal tape with longitudinal edge portions (16) (12), be locked in this longitudinal edge portions in the spiral lock joint (37), it is characterized in that: a flexible band (47) inserts and is pressed in the lock joint (37), with the marginal portion (16) of the above-mentioned belt (12) in the friction internal lock lock joint (37).
23. according to the pipe of claim 22, wherein belt (47) runs through above-mentioned spiral lock joint (37).
24. according to the pipe of claim 22 or 23, wherein above-mentioned belt (47) has circular section before insertion, and is made by elastomeric material.
Applications Claiming Priority (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US40075295A | 1995-03-08 | 1995-03-08 | |
| US08/400,752 | 1995-03-08 | ||
| SE95017505 | 1995-05-12 | ||
| SE9501750A SE507901C2 (en) | 1995-03-08 | 1995-05-12 | Method and apparatus for making spiral-folded tubes, and such spiral-folded tubes |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1177935A CN1177935A (en) | 1998-04-01 |
| CN1077463C true CN1077463C (en) | 2002-01-09 |
Family
ID=26662299
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN96192419A Expired - Fee Related CN1077463C (en) | 1995-03-08 | 1996-03-06 | Method and apparatus for producing helically wound cock-seam tubing |
Country Status (14)
| Country | Link |
|---|---|
| EP (2) | EP1015145B1 (en) |
| JP (1) | JPH11501256A (en) |
| CN (1) | CN1077463C (en) |
| AT (1) | ATE229850T1 (en) |
| AU (1) | AU4961296A (en) |
| CA (1) | CA2214493C (en) |
| CZ (1) | CZ293154B6 (en) |
| DE (1) | DE69625525T2 (en) |
| DK (1) | DK1015145T3 (en) |
| ES (1) | ES2187636T3 (en) |
| HU (1) | HU223347B1 (en) |
| NO (1) | NO312017B1 (en) |
| PL (1) | PL179477B1 (en) |
| WO (1) | WO1996027455A1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101312796B (en) * | 2005-09-20 | 2011-11-09 | 赫利克斯国际有限公司 | Device and method for continuously perforating roll material and forming tube |
Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU2592647C2 (en) * | 2010-07-21 | 2016-07-27 | Пол МАКМИЛЛЕН | Flexible tube, method and device for making same |
| CN102909279A (en) * | 2011-12-30 | 2013-02-06 | 中山市奥美森自动化设备有限公司 | Expansion rod conveyor |
| CN102966811B (en) * | 2012-11-01 | 2015-09-30 | 江苏澄工机械制造有限公司 | A kind of zinc-coated spiral gas drainage pipe and processing method thereof |
| DE102013013735B4 (en) * | 2013-08-21 | 2018-12-27 | Fritz Hahn Gmbh & Co. Kg | Apparatus and method for producing a spiral-folded tube and a spiral-folded tube produced by the device and by the method from a profiled metal strip |
| CN104190768A (en) * | 2014-09-11 | 2014-12-10 | 东莞诚兴五金制品有限公司 | Copper tube edge rolling process and mold for copper tube edge rolling process |
| IT201700086880A1 (en) * | 2017-07-31 | 2019-01-31 | Zeffiro | Continuous forming apparatus in seamed spiral ducts, forming and spiraling process |
| CN110253912B (en) * | 2019-06-27 | 2021-08-17 | 盐城工学院 | Spiral air duct forming machine |
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| GB681337A (en) * | 1948-12-03 | 1952-10-22 | Adolf Thies | Improvements in rain-water pipes, with method and device for their manufacture |
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| US3940962A (en) * | 1974-05-09 | 1976-03-02 | Pacific Roller Die Company, Incorporated | Conduit making machine with diameter control and method |
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| DE34871C (en) * | E. LEVA VASSEUR und H. WITZENMANN in Paris | Flexible metal tube with inlaid rubber strips | ||
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| US1718983A (en) * | 1926-12-06 | 1929-07-02 | Rome Mfg Company | Lock-joint metal tubing |
| FR996496A (en) * | 1949-10-03 | 1951-12-19 | Manufacturing process for tubes and tubes obtained by this process | |
| DE1082567B (en) * | 1955-07-05 | 1960-06-02 | Grundstuecksverwaltungsgesells | Process for the manufacture of folded screw sutures and device for carrying out the process |
| DE1452446B1 (en) * | 1960-02-15 | 1970-03-12 | Emil Siegwart | Spiral duct |
| FI40528B (en) * | 1966-12-21 | 1968-11-30 | Eino Kalervo Malki | |
| GB2213748B (en) * | 1987-12-21 | 1991-10-09 | Spiro Machines Sa | Production of spirally-seamed corrugated metal tubing |
| DE4130739A1 (en) * | 1991-08-08 | 1993-02-11 | Witzenmann Metallschlauchfab | METAL WRAP HOSE |
-
1996
- 1996-03-06 DK DK96906144T patent/DK1015145T3/en active
- 1996-03-06 ES ES96906144T patent/ES2187636T3/en not_active Expired - Lifetime
- 1996-03-06 HU HU9801707A patent/HU223347B1/en not_active IP Right Cessation
- 1996-03-06 CA CA002214493A patent/CA2214493C/en not_active Expired - Fee Related
- 1996-03-06 CZ CZ19972826A patent/CZ293154B6/en not_active IP Right Cessation
- 1996-03-06 JP JP8526807A patent/JPH11501256A/en active Pending
- 1996-03-06 EP EP96906144A patent/EP1015145B1/en not_active Expired - Lifetime
- 1996-03-06 CN CN96192419A patent/CN1077463C/en not_active Expired - Fee Related
- 1996-03-06 AT AT96906144T patent/ATE229850T1/en active
- 1996-03-06 AU AU49612/96A patent/AU4961296A/en not_active Abandoned
- 1996-03-06 DE DE69625525T patent/DE69625525T2/en not_active Expired - Lifetime
- 1996-03-06 EP EP02014515A patent/EP1266704A1/en not_active Withdrawn
- 1996-03-06 WO PCT/SE1996/000292 patent/WO1996027455A1/en active IP Right Grant
-
1997
- 1997-09-02 PL PL96322144A patent/PL179477B1/en not_active IP Right Cessation
- 1997-09-04 NO NO19974074A patent/NO312017B1/en not_active IP Right Cessation
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| US2339219A (en) * | 1940-08-03 | 1944-01-11 | Crowiey Edward Chase | Method and machine for making tubes |
| GB681337A (en) * | 1948-12-03 | 1952-10-22 | Adolf Thies | Improvements in rain-water pipes, with method and device for their manufacture |
| US3604464A (en) * | 1968-11-04 | 1971-09-14 | Callahan Mining Corp | Bendable metal duct |
| US3940962A (en) * | 1974-05-09 | 1976-03-02 | Pacific Roller Die Company, Incorporated | Conduit making machine with diameter control and method |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101312796B (en) * | 2005-09-20 | 2011-11-09 | 赫利克斯国际有限公司 | Device and method for continuously perforating roll material and forming tube |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH11501256A (en) | 1999-02-02 |
| DE69625525D1 (en) | 2003-01-30 |
| CA2214493A1 (en) | 1996-09-12 |
| NO974074D0 (en) | 1997-09-04 |
| ATE229850T1 (en) | 2003-01-15 |
| NO312017B1 (en) | 2002-03-04 |
| WO1996027455A1 (en) | 1996-09-12 |
| DE69625525T2 (en) | 2003-09-04 |
| CZ293154B6 (en) | 2004-02-18 |
| HU223347B1 (en) | 2004-06-28 |
| HUP9801707A3 (en) | 2000-06-28 |
| EP1015145B1 (en) | 2002-12-18 |
| CA2214493C (en) | 2006-05-02 |
| HUP9801707A2 (en) | 1998-11-30 |
| EP1266704A1 (en) | 2002-12-18 |
| ES2187636T3 (en) | 2003-06-16 |
| PL179477B1 (en) | 2000-09-29 |
| EP1015145A1 (en) | 2000-07-05 |
| NO974074L (en) | 1997-10-27 |
| AU4961296A (en) | 1996-09-23 |
| CN1177935A (en) | 1998-04-01 |
| CZ282697A3 (en) | 1999-04-14 |
| DK1015145T3 (en) | 2003-04-07 |
| PL322144A1 (en) | 1998-01-05 |
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