Patent ID: 7927524

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 lineal 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, employing a servo controller to control movement of the Ram press during the last 0.4 inch of mold closing; applying high pressure to the molds after the cover material starts to flow; cooling the mold; and opening mold and releasing cured golf ball.