B - Operations – Transporting – 29 – C
Patent
B - Operations, Transporting
29
C
18/703
B29C 45/74 (2006.01) B29C 45/30 (2006.01) H05B 3/42 (2006.01)
Patent
CA 1330156
ABSTRACT OF THE DISCLOSURE A plastic injection mold apparatus which includes a multiple tip torpedo heater in the fluid plastic flow passageway. The torpedo heater includes a pair of substantially identical tip members and a mounting collar which together define an exposed outer cylindrical surface of substantially uniform diameter with a tip at each end thereof over which the fluid plastic material may be directed at an elevated temperature. The tip members each are formed with an internal bore for receiving a respective electrical heating element, the leads of which exit the heater through the central mounting collar. The torpedo heater is retained in mounted position by means of a removable bushing, which permits relatively easy removal and replacement of the heater. The mounting collar and bushing each are formed so that an insulating air space is defined about their outer peripheries for enhancing the energy efficient operation of the molding operation.
595945
Fast Heat Element Manufacturing Co. Inc.
Macrae & Co.
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