EP0263830A1 - Verfahren und vorrichtung zum anbringen von flexiblen innenbeschichtungen in rohren - Google Patents
Verfahren und vorrichtung zum anbringen von flexiblen innenbeschichtungen in rohrenInfo
- Publication number
- EP0263830A1 EP0263830A1 EP86906736A EP86906736A EP0263830A1 EP 0263830 A1 EP0263830 A1 EP 0263830A1 EP 86906736 A EP86906736 A EP 86906736A EP 86906736 A EP86906736 A EP 86906736A EP 0263830 A1 EP0263830 A1 EP 0263830A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- tube
- pipe
- collapsed
- maintained
- strap
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Withdrawn
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L55/00—Devices or appurtenances for use in, or in connection with, pipes or pipe systems
- F16L55/16—Devices for covering leaks in pipes or hoses, e.g. hose-menders
- F16L55/162—Devices for covering leaks in pipes or hoses, e.g. hose-menders from inside the pipe
- F16L55/165—Devices for covering leaks in pipes or hoses, e.g. hose-menders from inside the pipe a pipe or flexible liner being inserted in the damaged section
- F16L55/1652—Devices for covering leaks in pipes or hoses, e.g. hose-menders from inside the pipe a pipe or flexible liner being inserted in the damaged section the flexible liner being pulled into the damaged section
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C53/00—Shaping by bending, folding, twisting, straightening or flattening; Apparatus therefor
- B29C53/02—Bending or folding
- B29C53/08—Bending or folding of tubes or other profiled members
- B29C53/086—Bending or folding of tubes or other profiled members bending radially, i.e. deformig the cross-section of the tube
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C63/00—Lining or sheathing, i.e. applying preformed layers or sheathings of plastics; Apparatus therefor
- B29C63/26—Lining or sheathing of internal surfaces
- B29C63/34—Lining or sheathing of internal surfaces using tubular layers or sheathings
- B29C63/343—Lining or sheathing of internal surfaces using tubular layers or sheathings the tubular sheathing having a deformed non-circular cross-section prior to introduction
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
- B29C65/48—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor using adhesives, i.e. using supplementary joining material; solvent bonding
- B29C65/50—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor using adhesives, i.e. using supplementary joining material; solvent bonding using adhesive tape, e.g. thermoplastic tape; using threads or the like
- B29C65/5042—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor using adhesives, i.e. using supplementary joining material; solvent bonding using adhesive tape, e.g. thermoplastic tape; using threads or the like covering both elements to be joined
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
- B29C65/48—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor using adhesives, i.e. using supplementary joining material; solvent bonding
- B29C65/50—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor using adhesives, i.e. using supplementary joining material; solvent bonding using adhesive tape, e.g. thermoplastic tape; using threads or the like
- B29C65/5092—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor using adhesives, i.e. using supplementary joining material; solvent bonding using adhesive tape, e.g. thermoplastic tape; using threads or the like characterised by the tape handling mechanisms, e.g. using vacuum
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
- B29C65/78—Means for handling the parts to be joined, e.g. for making containers or hollow articles, e.g. means for handling sheets, plates, web-like materials, tubular articles, hollow articles or elements to be joined therewith; Means for discharging the joined articles from the joining apparatus
- B29C65/7855—Provisory fixing
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C66/00—General aspects of processes or apparatus for joining preformed parts
- B29C66/01—General aspects dealing with the joint area or with the area to be joined
- B29C66/05—Particular design of joint configurations
- B29C66/10—Particular design of joint configurations particular design of the joint cross-sections
- B29C66/11—Joint cross-sections comprising a single joint-segment, i.e. one of the parts to be joined comprising a single joint-segment in the joint cross-section
- B29C66/112—Single lapped joints
- B29C66/1122—Single lap to lap joints, i.e. overlap joints
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C66/00—General aspects of processes or apparatus for joining preformed parts
- B29C66/40—General aspects of joining substantially flat articles, e.g. plates, sheets or web-like materials; Making flat seams in tubular or hollow articles; Joining single elements to substantially flat surfaces
- B29C66/41—Joining substantially flat articles ; Making flat seams in tubular or hollow articles
- B29C66/43—Joining a relatively small portion of the surface of said articles
- B29C66/432—Joining a relatively small portion of the surface of said articles for making tubular articles or closed loops, e.g. by joining several sheets ; for making hollow articles or hollow preforms
- B29C66/4322—Joining a relatively small portion of the surface of said articles for making tubular articles or closed loops, e.g. by joining several sheets ; for making hollow articles or hollow preforms by joining a single sheet to itself
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C66/00—General aspects of processes or apparatus for joining preformed parts
- B29C66/50—General aspects of joining tubular articles; General aspects of joining long products, i.e. bars or profiled elements; General aspects of joining single elements to tubular articles, hollow articles or bars; General aspects of joining several hollow-preforms to form hollow or tubular articles
- B29C66/51—Joining tubular articles, profiled elements or bars; Joining single elements to tubular articles, hollow articles or bars; Joining several hollow-preforms to form hollow or tubular articles
- B29C66/53—Joining single elements to tubular articles, hollow articles or bars
- B29C66/532—Joining single elements to the wall of tubular articles, hollow articles or bars
- B29C66/5326—Joining single elements to the wall of tubular articles, hollow articles or bars said single elements being substantially flat
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C66/00—General aspects of processes or apparatus for joining preformed parts
- B29C66/50—General aspects of joining tubular articles; General aspects of joining long products, i.e. bars or profiled elements; General aspects of joining single elements to tubular articles, hollow articles or bars; General aspects of joining several hollow-preforms to form hollow or tubular articles
- B29C66/61—Joining from or joining on the inside
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C66/00—General aspects of processes or apparatus for joining preformed parts
- B29C66/80—General aspects of machine operations or constructions and parts thereof
- B29C66/83—General aspects of machine operations or constructions and parts thereof characterised by the movement of the joining or pressing tools
- B29C66/836—Moving relative to and tangentially to the parts to be joined, e.g. transversely to the displacement of the parts to be joined, e.g. using a X-Y table
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C67/00—Shaping techniques not covered by groups B29C39/00 - B29C65/00, B29C70/00 or B29C73/00
- B29C67/0014—Shaping techniques not covered by groups B29C39/00 - B29C65/00, B29C70/00 or B29C73/00 for shaping tubes or blown tubular films
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C66/00—General aspects of processes or apparatus for joining preformed parts
- B29C66/01—General aspects dealing with the joint area or with the area to be joined
- B29C66/05—Particular design of joint configurations
- B29C66/10—Particular design of joint configurations particular design of the joint cross-sections
- B29C66/13—Single flanged joints; Fin-type joints; Single hem joints; Edge joints; Interpenetrating fingered joints; Other specific particular designs of joint cross-sections not provided for in groups B29C66/11 - B29C66/12
- B29C66/133—Fin-type joints, the parts to be joined being flexible
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C66/00—General aspects of processes or apparatus for joining preformed parts
- B29C66/40—General aspects of joining substantially flat articles, e.g. plates, sheets or web-like materials; Making flat seams in tubular or hollow articles; Joining single elements to substantially flat surfaces
- B29C66/47—Joining single elements to sheets, plates or other substantially flat surfaces
- B29C66/472—Joining single elements to sheets, plates or other substantially flat surfaces said single elements being substantially flat
- B29C66/4722—Fixing strips to surfaces other than edge faces
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C66/00—General aspects of processes or apparatus for joining preformed parts
- B29C66/70—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material
- B29C66/71—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the composition of the plastics material of the parts to be joined
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C66/00—General aspects of processes or apparatus for joining preformed parts
- B29C66/70—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material
- B29C66/72—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the structure of the material of the parts to be joined
- B29C66/723—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the structure of the material of the parts to be joined being multi-layered
Definitions
- the present invention relates to the lining of pipes and more particularly to the lining of pipes with a plastics material.
- the invention provides an improved in-situ method for pipe lining which has special utility for underground pipe systems.
- the present invention provides a method of lining a pipe comprising the steps of providing a semi-rigid plastics tube having an external diameter corresponding to the internal diameter of the pipe to be lined, forcibly collapsing the tube so as to form at least one longitudinally extending depression of the tube thereby decreasing the diameter of the tube, fixing a longitudinally extending tearable strap to or about the pipe so as to maintain the collapsed configuration. introducing the collapsed tube in its maintained collapsed configuration into the pipe for a desired distance along and within the pipe and releasing the strap in order to restore the tube to its original shape and bring it into frictional contact with the internal wall of the pipe.
- the present invention provides a semi-rigid plastics tube maintained in a collapsed shape comprising at least one longitudinally extending depression of the tube and a tearable strap fixed to or extending around the tube to maintain the maximum diameter of the collapsed tube at a lesser dimension than when the tube is uncollapsed.
- the strap may be composed of a laminated plastic film which is heat welded to the tube.
- the strap is in the form of a plastics film wrapped all the way round the deformed or collapsed plastics tube so that the film is welded to itself to maintain the tube in its collapsed configuration. This arrangement is particularly appropriate where the film cannot be readily adhered to the material of the tube. In such embodiments, release of the strap could be effected by cutting the strap or by pressurizing the tube.
- Figs. 1 and 2 are cross-sectional views of an undefined length of extruded plastics tubing;
- Fig. 3 is a cross-sectional view of the same piece of tubing together with a welded on plastics strap;
- Figs. 4 and 5 are cross-sections of a second form of the invention.
- Fig. 6 is a cross-sectional view similar to Fig. 3 with a plastics strap welded to itself; and Fig. 7 is a schematic representation of a system according to the invention for the in situ collapsing of tubing and lining of pipes.
- Fig. 1 shows a cross-section of a tube 1 which can be 5 of an extruded plastics material such as low density polythene. As shown, the tube 1 has an outside diameter, D, so chosen as to correspond to the inside diameter of the pipe (not shown) to be lined. In Fig. 2 the same tube 1 is shown after it has been forcibly
- the collapsed tubing can be conveniently spool fixed for delivery.
- apparatus can be provided to perform the collapsing and securing of the collapsed tube, such apparatus comprising roller means and heat welding means.
- Fig. 7 a spool of uncollapsed
- roller means 4a, 4b first substantially flatten and then arcuate the tubing, respectively, so as to produce a cross-sectional configuration as shown in Fig. 2.
- a welding station 5 In close proximity to the roller means 4b is provided a welding station 5 which receives and fixes a tearable film 2 to the tube thereby maintaining the tube in a collapsed configuration as shown in Fig. 3.
- the tubing is then introduced within and along a pipe 6.
- FIG. 4 A further embodiment is hereafter described having reference to Figs. 4 and 5 in which the invention has improved application to the lining of larger diameter pipes.
- a tube of extruded plastics material such as low density polythene is provided as previously indicated in Fig. 1 and having a larger diameter to correspond to the inside diameter of larger pipes desired to be lined.
- the tube is substantially flattened as shown in Fig. 4 and subsequently arcuated as shown in Fig. 5. Description of this embodiment is in other respects as discussed above.
- This second embodiment has improved practical value since the flattened liner shown in Fig. 4 can be spool fixed for delivery thereby obviating the necessity of roller means 4a.
- further steps can be taken to reduce the on-site apparatus shown in Fig. 7 and thereby increase the versatility of applications of the invention.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Lining Or Joining Of Plastics Or The Like (AREA)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
AU397385 | 1985-12-20 | ||
AU3973/85 | 1985-12-20 |
Publications (1)
Publication Number | Publication Date |
---|---|
EP0263830A1 true EP0263830A1 (de) | 1988-04-20 |
Family
ID=3694452
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP86906736A Withdrawn EP0263830A1 (de) | 1985-12-20 | 1986-11-25 | Verfahren und vorrichtung zum anbringen von flexiblen innenbeschichtungen in rohren |
Country Status (2)
Country | Link |
---|---|
EP (1) | EP0263830A1 (de) |
WO (1) | WO1987003840A1 (de) |
Families Citing this family (20)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3850124T2 (de) * | 1987-07-13 | 1994-09-15 | Osaka Bosui Construction Co | Verfahren zum einlegen eines steifen kunststoffbekleidungsrohres in eine leitung. |
US4986951B1 (en) * | 1987-07-27 | 1997-10-21 | Pipe Liners Inc | Pipe liner process |
US4985196B1 (en) * | 1987-10-30 | 1997-11-18 | Pipe Liners Inc | Pipe liner process |
DE3889992T3 (de) * | 1987-07-27 | 2000-04-20 | Pipe Liners, Inc. | Verfahren und Vorrichtung zur Herstellung einer im Querschnitt verformten Rohrauskleidung. |
SE469573B (sv) * | 1988-04-13 | 1993-07-26 | Nu Pipe Inc | Ersaettningsroer samt saett och anordning foer att tillverka och installera roer med bibehaallet minne foer en reducerad form |
GB8829974D0 (en) * | 1988-12-22 | 1989-02-15 | Victaulic Plc | Apparatus and methods of lining pipework |
GB8900063D0 (en) * | 1989-01-04 | 1989-03-01 | Subterra Ltd | Lining pipes |
US5091137A (en) * | 1989-01-19 | 1992-02-25 | Pipe Liners, Inc. | Pipe lining process |
US4998871A (en) * | 1989-01-19 | 1991-03-12 | Pipe Liners, Inc. | Apparatus for deforming plastic tubing for lining pipe |
DE69225969T2 (de) * | 1992-08-20 | 1999-03-11 | Ivan C. New Orleans Lo. Mandich | Verfahren zum Installieren eines Plastikliners in einem Rohr |
GB9618516D0 (en) * | 1996-09-05 | 1996-10-16 | United Utilities Plc | Method and apparatus for lining a conduit |
PT1210544E (pt) | 1998-12-31 | 2004-11-30 | Cempipe Ltd | Revestimento de tubo, produto de revestimento e processos para a formacao e a instalacao do revestimento |
US6167913B1 (en) | 1999-01-13 | 2001-01-02 | Cempipe Ltd. | Pipe liner, a liner product and methods for forming and installing the liner |
GB2357559B (en) * | 1999-12-24 | 2004-06-16 | Glynwed Pipe Systems Ltd | Multi-layer liner for pipes |
EP1271737A1 (de) * | 2001-06-27 | 2003-01-02 | Alcatel | Vorrichtung zur Fixierung eines Kabels in einem Rohr |
US6723266B1 (en) | 2002-11-18 | 2004-04-20 | Raymond Lippiatt | Lining of underground pipes |
DE102013106482A1 (de) * | 2013-06-21 | 2014-12-24 | Rehau Ag + Co | Stabilisiertes querschnittreduziertes Rohr und Verfahren zu dessen Stabilisierung |
CA2938915C (en) | 2014-02-27 | 2022-11-15 | Shell Internationale Research Maatschappij B.V. | Method and system for lining a tubular |
US20180266416A1 (en) | 2017-03-20 | 2018-09-20 | Recyca-Pipe Of America L.L.C. | Grouting material delivery and application system |
CN109454153A (zh) * | 2018-11-23 | 2019-03-12 | 五行科技股份有限公司 | 一种软管压u装置及压u方法 |
Family Cites Families (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
SE368435B (de) * | 1972-09-07 | 1974-07-01 | L Jansson | |
DE2861006D1 (en) * | 1977-07-27 | 1981-11-26 | Trio Engineering Ltd As | Method of lining a passageway |
NO832378L (no) * | 1982-07-02 | 1984-01-03 | Trio Engineering Ltd As | Fremgangsmaate til foring av kanaler, roerledninger etc. |
JPS60121380A (ja) * | 1983-12-06 | 1985-06-28 | 竹井 典夫 | ライニングを具えるパイプおよびパイプ内ライニング方法 |
-
1986
- 1986-11-25 WO PCT/AU1986/000362 patent/WO1987003840A1/en unknown
- 1986-11-25 EP EP86906736A patent/EP0263830A1/de not_active Withdrawn
Non-Patent Citations (1)
Title |
---|
See references of WO8703840A1 * |
Also Published As
Publication number | Publication date |
---|---|
WO1987003840A1 (en) | 1987-07-02 |
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Legal Events
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PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
Free format text: ORIGINAL CODE: 0009012 |
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AK | Designated contracting states |
Kind code of ref document: A1 Designated state(s): AT BE CH DE FR GB IT LI LU NL SE |
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18D | Application deemed to be withdrawn |
Effective date: 19870921 |