B - Operations – Transporting – 29 – C
Patent
B - Operations, Transporting
29
C
18/69
B29C 65/18 (2006.01) B29C 33/12 (2006.01) B29C 45/14 (2006.01) B29C 45/26 (2006.01) B29D 23/00 (2006.01) F16L 47/02 (2006.01)
Patent
CA 1271908
ABSTRACT "HEAT WELDABLE PIPE FITTINGS" Apparatus and method for producing heat weldable, thermoplastics, tubular pipe fittings for use with heat weldable piping or tubing. A core is shown in a moulding machine ready for moulding. The core has two parts 11 and 12, each having an outer core member 13, 13A and an inner axially retractable member 14, 14A. the inner members 14 and 14A are held together by a bolt 15 threaded into a bore 16. Pivoted at 18 and 19 in the outer members 13, 13A are two pivoted retractable segmental fingers 20 and 21 carrying radial projections 22, 23 respectively, to facilitate winding a heater wire and/or to receive a terminal post 24, 25 during a moulding operation. Each segmental finger 20, 21 also has a small projection 26 and the two projections 26 are arranged to guide and support the wire during winding of the wire and to hold the wire in position during a subsequent moulding operation. The outer portions of the core also have a very shallow continuous spiral or other form of track or groove to receive wire 30 which is wound onto the core before moulding commences.
535296
Ridout & Maybee Llp
Uponor Innovation Ab
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