B - Operations – Transporting – 29 – C
Patent
B - Operations, Transporting
29
C
18/973
B29C 65/34 (2006.01) B29C 70/82 (2006.01) B29C 70/88 (2006.01) B29D 23/00 (2006.01)
Patent
CA 1235872
ELECTRIC FUSION WELDING OF THERMOPLASTIC MATERIALS ABSTRACT A method and apparatus for electric fusion weld- ing of thermoplastic materials in which a welding rod formed of a core of said thermoplastic is wrapped in an electrical resistance element. The welding rod is positioned between members of the thermoplastic to be welded and electric current is applied to the electric resistance element while pressing the members and the core together to embed the electric resistance element in the thermoplastic causing the plastic to fuse and form a unitary weld. Simultaneously the electrical resistance element is embedded in the weld, mech- anically reinforcing and strengthening the connection.
529474
Butts Ernest O.
Butts Nicholas E.
Pinder Robert
Baker Harold C.
Butts Ernest O.
Butts Nicholas E.
Pinder Robert
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