Sleeve made from thermoplastic material for joining...

Details Sleeve made from thermoplastic material for joining... Sleeve made from thermoplastic material for joining...

F - Mech Eng,Light,Heat,Weapons

16

L

285/44

F16L 13/00 (2006.01) B29C 61/06 (2006.01) B29C 65/34 (2006.01) B29C 65/68 (2006.01) B29C 70/82 (2006.01) B29D 23/00 (2006.01) F16L 47/00 (2006.01) F16L 47/03 (2006.01)

Patent

CA 1118011

ABSTRACT OF THE DISCLOSURE A sleeve member formed from a pipe length by expansion is placed over a mandrel onto which are wound the spaced turns of an electric resistance heating wire. By heating the sleeve member the latter is shrunk onto the turns. By electrically producing heat in the wire, material flows around the expanding turns and embed the latter completely in a sleeve member projecting material portions being formed in the vicinity of turns. Thus, protection against electric shock hazards is obtained for turns and subse- quent working is made unnecessary for the recessed edge portions of inner wall which deform inwards during manufacture.

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