Patent ID: 6093360
Filing Date: 2000-07-25
Classification: B29C,B29L

Abstract:
In a golf ball injection mold comprising; an upper mold section and a lower mold section which are removably mated to define a spherical cavity by respective concave surfaces,a plurality of support pins disposed in the mold sections for movement into and out of the cavity, anda plurality of gates disposed in fluid communication with an injection molding machine and the cavity for feeding a cover molding material from the injection molding machine into the cavity, whereina golf ball having a core and a cover is prepared by moving the support pins into the cavity for vertically supporting the core at the center of the cavity, injecting the cover molding material into the space between the core and the cavity-defining surface through the gates, and withdrawing the support pins from the cavity when the space is filled with the cover molding material, thereby molding the cover around the core,said mold having six to twelve gates disposed at an equal spacing in the parting plane between the mold sections so that three to six pairs of gates are diametrically opposed and the gates are joined to the cavity-defining surface at an angle of 15.degree. to 75.degree. relative to a tangent to the cavity-defining surface and the angle of the respective gates have the same direction and the same value.