Patent ID: 7270529

Claim:
A mold assembly for blow molding comprising first and second mating mold components, each mating component comprising molding surfaces open to a mating face of the mold component and defining the exterior of an article to be molded from a tubular parison, at least one replaceable insert comprising a portion of such molding surfaces being attached to the mating mold component by retaining means accessible from the mating face of the mating mold component, and at least one replaceable element comprising one of means for piercing a wall of the parison with mold closure, a heat pipe and a knife insert for forming a parting groove, each replaceable element being retained by retaining means accessible from the mating face of the mating mold component so that the replaceable element may be installed in and removed from the mating mold component while the mating mold component is mounted in a press of a blow molding machine.