Patent ID: 6673283
Filing Date: 2004-01-06
Classification: B29C,G01C

Abstract:
A method of forming vials having two ends, a center between the ends and a barrel-shaped cavity with a maximum inner diameter positioned near the center, comprising the steps of:providing a mold assembly including a molding cavity; providing an adjustable core pin including an elongate rod having a barrel-shaped distal portion having a crest and a rod retainer, the rod and rod retainer being movable relative to each other and fastenable to each other such that the crest can be established at a preferred position; inserting the rod into the molding cavity to define a molding space as the volume between the rod and the cavity; filling the molding space with moldable material to mold the vial; withdrawing the rod from the molding cavity; removing the vial from the rod; optically measuring the location of the maximum diameter; and in response to the optical measurement, adjusting the rod and rod retainer to establish the crest at the preferred position; whereby the forming of subsequent vials results in more accurate positioning of the maximum diameter.