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US 6,656,318 B1Granted
Method for connecting two reinforced thermoplastic tubes
AssigneeSeva
InventorsAlain Sabouraud, Alain Tournier, Michel Derycke, Gerard Joly
Life of this patent
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Abstract
The invention concerns a method of joining two reinforced thermoplastic material tubes having the same diameter. Ends of the two tubes are first butt welded along a peripheral weld. After forming the weld, a reinforced thermoplastic material outer jacket is fitted over most of the length of the peripheral weld, extending on either side of the weld over end sections of the two tubes. The outer jacket is heated and pressed radially until the outer jacket and the end sections of the two tubes interpenetrate.
Claims22
A method of joining together two reinforced thermoplastic tubes, comprising:
- butt welding an end of a first thermoplastic tube having reinforcing structure therein to an end of a second thermoplastic tube having reinforcing structure therein to provide a welded portion of said first and second thermoplastic tubes having said reinforcing structure therein;
- fitting a thermoplastic jacket having reinforcing structure therein over said welded portion;
- and
- heating and radially pressing said thermoplastic jacket until said thermoplastic jacket and said welded portion interpenetrate with one another such that said reinforcing structure of said thermoplastic jacket comes into contact with said reinforcing structure of said welded portion and said reinforcing structure of end sections of said first and second thermoplastic tubes adjacent to said welded portion,
- wherein said reinforcing structure of said thermoplastic jacket includes continuous composite threads of combined continuous glass filaments and continuous organic thermoplastic filaments.
2 more elements
Dependencies are inferred from the claim text.