B - Operations – Transporting – 29 – C
Patent
B - Operations, Transporting
29
C
18/972
B29C 65/30 (2006.01) B29C 65/34 (2006.01) F16L 47/03 (2006.01)
Patent
CA 1193819
Abstract An electro-fusion fitting for coupling thermoplastic pipes incorporates a heating coil (2) and has a resistor (6) with a value chosen in accordance with the power to be supplied to the coil connected between a main terminal (4) and an auxiliary terminal (5). Control apparatus is adapted to sense the resistance value and supply electric current to the coil for a predetermined time set automatically according to the resistance value.
412179
Bilton David A.
Bridgstock Eric
Glaves Brian
Kenworthy David M.a.
Fusion Plastics Limited
Sim & Mcburney
Vectstar Limited
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