Patent ID: 6447406
Filing Date: 2002-09-10
Classification: A63B,B29C,B29D,B29L

Abstract:
A golf ball mold comprising:an upper mold and a lower mold for forming a spherical cavity having a large number of projections for shaping dimples on an inner wall surface thereof with a parting surface provided at a position substantially corresponding to an equator of the cavity; and a plurality of core support pins elongating reciprocally movably in a direction perpendicular to the parting surface on a circle centering on each pole of the cavity of the upper mold and the lower mold with a predetermined radius with a distance with each other in the cavity, wherein the support pins have a dimple shaping projection at a tip portion thereof having a round shape on a cavity wall surface level, protruding from the position to a cavity center direction when the support pins are withdrawn to a cavity wall surface position and wherein the support pins have an elliptic cross-sectional shape in a direction perpendicular to a central axis thereof with a shorter diameter disposed in a direction toward an axial line linking both poles of the cavity.