Patent ID: 6399006
Filing Date: 2002-06-04
Classification: B29C,Y10S

Abstract:
A method of forming a sweep elbow fitting having a straight cylindrical, a curved section, and a second straight cylindrical nose section, the method comprising the steps of:inserting a segmented mold core, having a plurality of segments, including a first segment and a second segment each segment having an arcuate portion and a straight portion, into a mold cavity; inserting a similar mold core, having a plurality of segments, including a third segment and a fourth segment each segment having an arcuate portion and a straight portion, into the mold cavity; injecting a molten polymer into the mold cavity; allowing the molten polymer to at least partially set; arcuately retracting the first segment of the mold core from the mold cavity about a center of rotation; translating the first segment away from the center of rotation; offsetting the second segment from its molding position; arcuately retracting the second segment; arcuately retracting the third segment of the mold core from the mold cavity about a center of rotation; translating the third segment away from the center of rotation; offsetting the fourth segment from its molding position; and arcuately retracting the fourth segment.