Patent ID: 6506045
Filing Date: 2003-01-14
Classification: B29C

Abstract:
A nozzle for injecting molten plastic substance into a mold, said nozzle comprising:a rear portion; a front portion; and a melting channel extending between said rear portion and said front portion of said nozzle for conveying the molten plastic substance in a forward direction, said front portion having an elongated shape and said rear portion including an outer annular element that surrounds an inner portion of said rear portion adjacent to said melting channel, wherein: said outer annular element has a substantially cylindrical shape, a forward facing surface, and a rearward facing planar surface; a first annular groove is defined between an inner peripheral surface of said annular element and an outer peripheral surface of said front portion; said rear portion terminates, in a central zone thereof, with a planar surface; the rearward facing planar surface of said rear portion is situated in a more rearward position than the planar terminal surface of said outer annular element; and a second annular groove is located in said rear portion between the planar surface of said outer annular element and the planar surface of the central zone of the rear portion.