F - Mech Eng,Light,Heat,Weapons – 16 – L
Patent
F - Mech Eng,Light,Heat,Weapons
16
L
189/25, 154/8
F16L 9/18 (2006.01) F16L 3/22 (2006.01)
Patent
CA 1095438
ABSTRACT OF THE DISCLOSURE A laminated pipe of oriented thermoplastic polymeric material is manufactured by a method in which at least two coaxial tubular blanks are expanded in a female mould after heating to a temperature that will induce orientation. The moulding apparatus is arranged to support the blanks which may be of different materials chosen for their individual properties. One of the blanks may be of short length and be used to reinforce the pipe at a chosen area such as a coupling sheet.
287558
Goddin Jeremy R.
Riley Jack L.
Smart & Biggar
Yorkshire Imperial Plastics Limited
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