Adhesive bonding and miscellaneous chemical manufacture – Methods – Surface bonding and/or assembly therefor
Patent
1985-04-26
1986-09-09
Dawson, Robert A.
Adhesive bonding and miscellaneous chemical manufacture
Methods
Surface bonding and/or assembly therefor
138155, 138DIG9, 156165, 156229, 156294, 1563042, 264 465, 285235, 285294, 285417, B32B 3106
Patent
active
046107401
ABSTRACT:
A method for joining insulated conduits is disclosed, in which the bared ends of the medium-carrying pipes are first interconnected in a per se known manner and a union piece is thereafter placed around the resulting joint, such that the union piece has an overlap on the outer side of the conduits to be joined and forms a mould for foaming an insulating material of cellular plastic in the joint. The union piece is a relatively rigid, circumferentially resilient plastic tube which is slotted throughout its entire length and, before being applied around the joint, has an inner diameter which is smaller than the outer diameter of the conduits. After the union piece has been applied around the joint, a strip is placed on the slot of the union piece throughout substantially the entire length of the slot, said strip consisting of a mouldable, curable plastic material which by curing is bondable to the union piece, and which is thereafter cured so as to be bonded to the union piece.
REFERENCES:
patent: 3677303 (1972-07-01), Martin
patent: 3847694 (1974-11-01), Stewing
patent: 3989281 (1976-11-01), Wilde
patent: 4162093 (1979-07-01), Sigmund
patent: 4226444 (1980-10-01), Bunyan
patent: 4384905 (1983-05-01), Gros
patent: 4514241 (1985-04-01), Maukola
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