초록 ▼

A golf ball mold includes a pair of split mold sections which are removably mated to define a spherical cavity. The cavity surfaces are provided with a plurality of dimple-forming protrusions. Some of the dimple-forming protrusions are constructed by dimple-forming pins whose inner end has substanti

A golf ball mold includes a pair of split mold sections which are removably mated to define a spherical cavity. The cavity surfaces are provided with a plurality of dimple-forming protrusions. Some of the dimple-forming protrusions are constructed by dimple-forming pins whose inner end has substantially the same shape as the protrusions. The dimple-forming pins are axially or radially movable so that the projection distance of the pins into the cavity is adjustable. With a single mold, golf balls having dimples of different shapes can be produced. Golf balls of quality including symmetry and flight performance can be manufactured at low cost.

대표청구항 ▼

[ We claim:] [1.] A golf ball mold comprising; a pair of split mold sections which are removably mated to define a spherical cavity between their inner surfaces, the cavity surfaces being provided with a plurality of dimple-forming protrusions, whereinsome of the plurality of dimple-forming protrusi

[ We claim:] [1.] A golf ball mold comprising; a pair of split mold sections which are removably mated to define a spherical cavity between their inner surfaces, the cavity surfaces being provided with a plurality of dimple-forming protrusions, whereinsome of the plurality of dimple-forming protrusions are constructed by dimple-forming pins whose inner end has substantially the same shape as the protrusions, and said dimple-forming pins are movable along their axis so that the projection distance of the pins into the cavity is adjustable for improving golf ball symmetry; said dimple forming pins having a diameter in the range of 2.0 to 4.6 mm, and the number of said dimple forming pins in a pair of the mold sections is in the range of 2 to 50.