Patent ID: 8469695
Filing Date: 2013-06-25
Classification: B29C,Y10S,Y10T

Abstract:
1. A method of making a mold core comprising the steps of guiding a ring over a first end of a forming pin so that the ring extends around a pin body of the forming pin, sliding the ring along the pin body from the first end toward a second end wall of the forming pin that extends radially outwardly from the pin body, and seating the ring on the second end wall of the forming pin, wherein the forming pin includes radially extending ribs coupled to an inner surface of the second end wall and the ring cooperates with the radially extending ribs and the inner surface of the second end wall to form lower coolant passages that extend radially along the second end wall of the forming pin when the ring is seated on the second end wall of the forming pin so that an end face of the second end wall, arranged to face away from the inner surface of second end wall, is cooled by fluid passed through the lower coolant passages during operation of the mold core.