Patent ID: 8309002

Claim:
A method of compression molding a thin cover layer over a soft, large golf ball core, the method comprising: providing a Ram press having a pair of molds, each mold having upper and lower mold frames, each frame containing multiple hemispherical cavities; placing a pair of hemispherical cover layer shells around a golf ball core in each lower cavity; moving the Ram press such that the molds are placed in a low pressure closing direction in respect to each other, the Ram press responding to data provided by a linear potentiometer; monitoring the cavity pressure with a pressure transducer and measuring the temperature of the cover layer to determine flow point; controlling the amount of core deflection and cover material displacement during the mold closing, controlling movement of the Ram press during the last 0.4 inch of mold closing based on mold position; applying high pressure to the molds after the cover material starts to flow; cooling the mold; and opening mold and releasing cured golf ball.