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US 4,441,743 AGranted
Adhesively joined pipe connection
AssigneeWavin B.V.
InventorJohannes F. Steenbergen
Life of this patent
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AssigneeWavin B.V.
InventorJohannes F. Steenbergen
Estimating the term…
An adhesively joined pipe connection comprises a male pipe part and a female pipe part of fiber reinforced plastics, both being provided with a foam plastic insulating layer. The foam plastic layer extends to the front end of the receiving portion of the female pipe part, a heating resistance foil being fixed to the outer side of said receiving portion by means of an adhesive. A sealing sleeve engages sealingly the outer side of tubular casings of the foam plastic layers upon the female and male pipe parts. Connecting wires connected with heating foil extend through the foam plastic layer. A female pipe part of fiber reinforced plastics provided with a foam plastic layer is extending to the free end of a receiving portion and a heating resistance foil fixed to the outer side of said receiving portion. Wires connected to the resistance foil extend through the foam plastic layer.
A plastic pipe connection, comprising a female pipe part and male pipe part, of fibre reinforced thermosetting plastics, secured together by means of a thermosetting adhesive, at least said female part (4) having a thermally insulating foam plastic layer (2) on its male-part receiving portion (5), characterized in that an electrically heatable foil element (8) covered by the insulating layer (2) is provided on the outer wall surface of the receiving portion (5).
Dependencies are inferred from the claim text.