WO2003100310A1 - Method and apappratus for joining plastic pipes - Google Patents
Method and apappratus for joining plastic pipes Download PDFInfo
- Publication number
- WO2003100310A1 WO2003100310A1 PCT/EP2003/005298 EP0305298W WO03100310A1 WO 2003100310 A1 WO2003100310 A1 WO 2003100310A1 EP 0305298 W EP0305298 W EP 0305298W WO 03100310 A1 WO03100310 A1 WO 03100310A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- annular
- pipe
- plastic
- plastic pipe
- electrofusion
- Prior art date
Links
Classifications
-
- 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
- B29C65/02—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure
- B29C65/34—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using heated elements which remain in the joint, e.g. "verlorenes Schweisselement"
- B29C65/3404—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using heated elements which remain in the joint, e.g. "verlorenes Schweisselement" characterised by the type of heated elements which remain in the joint
- B29C65/342—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using heated elements which remain in the joint, e.g. "verlorenes Schweisselement" characterised by the type of heated elements which remain in the joint comprising at least a single wire, e.g. in the form of a winding
-
- 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
- B29C65/56—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor using mechanical means or mechanical connections, e.g. form-fits
- B29C65/562—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor using mechanical means or mechanical connections, e.g. form-fits using extra joining elements, i.e. which are not integral with 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
- B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
- B29C65/72—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by combined operations or combined techniques, e.g. welding and stitching
-
- 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
- B29C66/02—Preparation of the material, in the area to be joined, prior to joining or welding
- B29C66/022—Mechanical pre-treatments, e.g. reshaping
- B29C66/0224—Mechanical pre-treatments, e.g. reshaping with removal of material
- B29C66/02241—Cutting, e.g. by using waterjets, or sawing
-
- 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
- B29C66/01—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
- B29C66/114—Single butt joints
- B29C66/1142—Single butt to butt 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
- B29C66/01—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
- B29C66/131—Single flanged joints, i.e. one of the parts to be joined being rigid and flanged in the joint area
- B29C66/1312—Single flange to flange joints, the parts to be joined being rigid
-
- 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
- B29C66/52—Joining tubular articles, bars or profiled elements
- B29C66/522—Joining tubular articles
- B29C66/5221—Joining tubular articles for forming coaxial connections, i.e. the tubular articles to be joined forming a zero angle relative to each other
-
- 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
- B29C66/534—Joining single elements to open ends of tubular or hollow articles or to the ends of bars
- B29C66/5344—Joining single elements to open ends of tubular or hollow articles or to the ends of bars said single elements being substantially annular, i.e. of finite length, e.g. joining flanges to tube ends
-
- 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
- B29C66/534—Joining single elements to open ends of tubular or hollow articles or to the ends of bars
- B29C66/5346—Joining single elements to open ends of tubular or hollow articles or to the ends of bars said single elements being substantially flat
-
- 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
- F16L47/00—Connecting arrangements or other fittings specially adapted to be made of plastics or to be used with pipes made of plastics
- F16L47/02—Welded joints; Adhesive joints
- F16L47/03—Welded joints with an electrical resistance incorporated in the joint
-
- 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
- F16L47/00—Connecting arrangements or other fittings specially adapted to be made of plastics or to be used with pipes made of plastics
- F16L47/14—Flanged 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
- B29C2793/00—Shaping techniques involving a cutting or machining operation
-
- 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
- B29C65/02—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure
- B29C65/34—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using heated elements which remain in the joint, e.g. "verlorenes Schweisselement"
- B29C65/3472—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using heated elements which remain in the joint, e.g. "verlorenes Schweisselement" characterised by the composition of the heated elements which remain in the joint
- B29C65/3476—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using heated elements which remain in the joint, e.g. "verlorenes Schweisselement" characterised by the composition of the heated elements which remain in the joint being metallic
-
- 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
- B29C65/76—Making non-permanent or releasable 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
- B29C66/70—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
Definitions
- the present invention relates to a method and apparatus for joining plastic pipes, which may be free standing plastic pipes or plastic pipes provided within other pipes.
- the present invention seeks to alleviate at least some of the problems discussed above.
- a method o f joining plastic pipes comprising:- threading an annular flange onto an end portion of a plastic pipe; threading an annular electrofusion coupler onto the end portion of the plastic pipe; fusing the annular electrofusion coupler to the plastic pipe; if the end portion of the plastic pipe extends beyond the annular electrofusion coupler, trimming the plastic pipe to be substantially flush with the annular electrofusion coupler; performing the above steps on another plastic pipe;
- Such a method of joining plastic pipes overcomes the problems discussed above with butt fused plastic pipes. Furthermore, the above method of joining plastic pipes enables the plastic pipes to be subsequently separated if required, e.g. for maintenance, by releasing the annular flanges from each other.
- the annular flanges are preferably releasably secured to each other, for example, using nuts and bolts.
- the annular flanges are preferably made from metal and may have a plurality of bolt holes through which bolts may be passed to secure the annular flanges to each other.
- the annular electrofusion coupler is preferably made from plastics material with suitable heating wires embedded within it.
- the joined plastic pipes may be provided within an outer pipe such as a cast iron main.
- a connector for connecting two plastic pipes comprising:- an annular flange to be threaded onto each plastic pipe; an annular electrofusion coupler to be threaded onto each plastic pipe and fused to the plastic pipe; and means to secure the annular flanges to each other.
- a pipeline formed using the method of the first aspect of the present invention is provided.
- Figure 1 shows a plastic pipe to be joined to another plastic pipe
- Figure 2 shows an annular flange to be threaded over a plastic pipe
- Figure 3 shows a plastic pipe with an annular flange threaded over it
- Figure 4 shows a rear view of the arrangement shown in Figure 3;
- FIG. 5 shows the arrangement of Figure 3 with the addition of an electrofusion coupler
- Figure 6 shows the arrangement of Figure 5 with the plastic pipe trimmed
- Figure 7 shows a side view of two plastic pipes joined together
- Figure 8 shows two joined plastic pipes inside a first outer surrounding pipe
- Figure 9 shows two joined plastic pipes inside a second outer surrounding pipe.
- Figure 1 shows a plastic pipe 10, in this case made from polyethylene (PE).
- PE polyethylene
- the pipe 10 could be used for any suitable application such as conveying fluids for example fuel gas, oil, slurries, sewerage etc.
- Figure 2 shows an annular flange 20, in this case made from metal, provided with a central hole 21 to accommodate a pipe such as plastic pipe 10.
- the flange 20 has a plurality of equiangularly spaced bolt holes arranged around its periphery.
- Figure 3 shows the plastic pipe 10 with the central hole 21 of the flange 20 threaded over it.
- Figure 4 shows a rear view of the pipe 10 and flange 20 with an optional shim 23 arranged between the pipe 10 and flange 20 to spread the weight of the flange 20 on the pipe 10.
- FIG 5 is a front view similar to that of Figure 3 with the addition of an annular plastic electrofusion member 30 threaded onto the end of pipe 10 after the flange 20.
- the annular plastic electrofusion member 30 has connection wires 31 which can be connected to a power source.
- the annular plastic electrofusion member 30 has heating wires embedded inside, near its inner surface and connected to the connection wires 31 so that when energised by a power source connected to the connection wires 31, the heating wires embedded in the member 30 melt the surrounding plastic of the inside surface of the member 30 and the outside surface of the pipe 10 to fuse them together. Once the electrofusion member 30 is fused to the pipe 10, the connection wires 31 may be removed.
- the electrofusion m ember 30 may be positioned some distance from the end of pipe 10 when it is fused to the pipe 10, as shown in Figure 5, in which case the end portion of pipe 10 extending out from the electrofusion member 30 will be cut off to bring the end of pipe 10 flush with the exposed edge of electrofusion member 30 as shown in Figure 6.
- the electrofusion member 30 can be fused to the end of pipe 10 without the need for cutting off an exposed section of pipe 10.
- Figure 7 shows the securing together of two sections of pipe 10 prepared as in Figure 6.
- the ends of the pipes 10 and the exposed surfaces of electrofusion couplers 30 are brought into contact with each other and secured to each other by nuts 24 and bolts 25 secured between the flanges 20 using bolt holes 22.
- a containment ring (not shown) may be secured around both electrofusion couplers 30 to reduce the likelihood of them being forced outwards by pressure from within the pipe.
- the plastic pipes 10 may be provided as a loose fit inside an outer pipe 40 which may be an existing pipe, such as a cast iron main for example as shown in Figure 8 and Figure 9. hi Figure 8, the plastic pipes 10 and flanges 20 are accommodated within outer pipe 40.
- the outer pipe 40 may not have a joint or may have a joint at or near to where the plastic pipes or joined.
- the plastic pipes 10 could be provided within outer pipes 40 with the flanges 20 extending out of outer pipes 40, for example, in the gap between two neighbouring outer pipes as shown in Figure 9.
- annular flanges 20 are described as being joined by nuts 24 and bolts 25, any suitable method or apparatus for joining the flanges 20 may be used such as using clamps. However, the method or apparatus for joining the annular flanges 20 is preferably releasable.
Abstract
Description
Claims
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
AU2003238367A AU2003238367A1 (en) | 2002-05-23 | 2003-05-20 | Method and apappratus for joining plastic pipes |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB0211875A GB2388879B (en) | 2002-05-23 | 2002-05-23 | Method and apparatus for joining plastic pipes |
GB0211875.0 | 2002-05-23 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2003100310A1 true WO2003100310A1 (en) | 2003-12-04 |
Family
ID=9937266
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/EP2003/005298 WO2003100310A1 (en) | 2002-05-23 | 2003-05-20 | Method and apappratus for joining plastic pipes |
Country Status (4)
Country | Link |
---|---|
AR (1) | AR039852A1 (en) |
AU (1) | AU2003238367A1 (en) |
GB (1) | GB2388879B (en) |
WO (1) | WO2003100310A1 (en) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2016151563A1 (en) * | 2015-03-25 | 2016-09-29 | Sunadim Andi Jayaprawira | The improvement of connection [buttfusion] quality with connection supporting components |
Citations (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2962305A (en) * | 1956-10-01 | 1960-11-29 | Minnesota Mining & Mfg | Coupling for reinforced resinous pipe |
DE1284618B (en) * | 1965-02-13 | 1968-12-05 | Mannesmann Ag | Method for reinforcing flanges formed by boring pipes made of high molecular weight polyethylene |
JPS5813291A (en) * | 1981-07-16 | 1983-01-25 | 与那原 好宏 | Pipe body with universal connecting edge |
US5127116A (en) * | 1989-08-22 | 1992-07-07 | British Gas Plc | Pipe joint |
JPH05248586A (en) * | 1992-03-10 | 1993-09-24 | Mitsubishi Plastics Ind Ltd | Mechanical joint with built-in heating wire |
US5462706A (en) * | 1992-08-21 | 1995-10-31 | Pipe Rehab International, Inc. | Method for forming a flange on an end of a synthetic liner |
JPH10311480A (en) * | 1997-05-09 | 1998-11-24 | Nkk Corp | Flange joint for synthetic resin pipe |
WO2002048596A1 (en) * | 2000-12-12 | 2002-06-20 | Lattice Intellectual Property Ltd | Joining of lined pipes |
Family Cites Families (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB402415A (en) * | 1932-04-30 | 1933-11-30 | Richard William Bailey | Improvements relating to flanges for pipes and other containers for fluid at high pressures |
GB574656A (en) * | 1943-12-23 | 1946-01-15 | Georg Haim | Improvements in or relating to the flanging of pipes, conduits and the like of plastic materials |
GB838798A (en) * | 1958-02-15 | 1960-06-22 | Douglas Norman Manton | Improvements in or relating to flanges or neck rings for metal pipes or bodies |
JPS5248586A (en) * | 1975-10-16 | 1977-04-18 | Nippon Sanso Kk | Method for preparating air containing ozone |
CA1041922A (en) * | 1976-08-16 | 1978-11-07 | Harold Ahrbeck | Thermoplastic pipe stub end |
DE3014158A1 (en) * | 1979-04-19 | 1980-10-30 | John J Hunter | METHOD FOR LINING THE OPEN END OF A TUBE AND PIPE CONNECTION |
-
2002
- 2002-05-23 GB GB0211875A patent/GB2388879B/en not_active Expired - Fee Related
-
2003
- 2003-05-20 WO PCT/EP2003/005298 patent/WO2003100310A1/en not_active Application Discontinuation
- 2003-05-20 AU AU2003238367A patent/AU2003238367A1/en not_active Abandoned
- 2003-05-22 AR ARP030101791A patent/AR039852A1/en not_active Application Discontinuation
Patent Citations (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2962305A (en) * | 1956-10-01 | 1960-11-29 | Minnesota Mining & Mfg | Coupling for reinforced resinous pipe |
DE1284618B (en) * | 1965-02-13 | 1968-12-05 | Mannesmann Ag | Method for reinforcing flanges formed by boring pipes made of high molecular weight polyethylene |
JPS5813291A (en) * | 1981-07-16 | 1983-01-25 | 与那原 好宏 | Pipe body with universal connecting edge |
US5127116A (en) * | 1989-08-22 | 1992-07-07 | British Gas Plc | Pipe joint |
JPH05248586A (en) * | 1992-03-10 | 1993-09-24 | Mitsubishi Plastics Ind Ltd | Mechanical joint with built-in heating wire |
US5462706A (en) * | 1992-08-21 | 1995-10-31 | Pipe Rehab International, Inc. | Method for forming a flange on an end of a synthetic liner |
JPH10311480A (en) * | 1997-05-09 | 1998-11-24 | Nkk Corp | Flange joint for synthetic resin pipe |
WO2002048596A1 (en) * | 2000-12-12 | 2002-06-20 | Lattice Intellectual Property Ltd | Joining of lined pipes |
Non-Patent Citations (2)
Title |
---|
PATENT ABSTRACTS OF JAPAN vol. 0180, no. 06 (M - 1537) 7 January 1994 (1994-01-07) * |
PATENT ABSTRACTS OF JAPAN vol. 1999, no. 02 26 February 1999 (1999-02-26) * |
Also Published As
Publication number | Publication date |
---|---|
AU2003238367A1 (en) | 2003-12-12 |
GB0211875D0 (en) | 2002-07-03 |
GB2388879B (en) | 2005-11-30 |
GB2388879A (en) | 2003-11-26 |
AR039852A1 (en) | 2005-03-02 |
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