Integrally heated torpedo

Details Integrally heated torpedo Integrally heated torpedo

B - Operations, Transporting

29

C

18/703

B29C 45/74 (2006.01)

Patent

CA 2013950

Abstract of the Disclosure An integral heated torpedo is provided for use in injection molding. The torpedo is formed from a single piece of metal and has an elongate body portion which extends axially from an enlarged end portion and which terminates in tip. The center of the torpedo body portion contains an axial cavity extending between the torpedo tip and the enlarged end portion. The bore is adapted to receive a heating element which includes a coil of resistance wire and a thermocouple which are surrounded by heat insulative material. A plurality of melt flow passages extend axially through the enlarged end portion and are disposed generally around the torpedo bore to provide a series of melt flow paths through the enlarged end portion onto the heated exterior surface of the torpedo body.

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