Injection mold for golf balls

Details Injection mold for golf balls Injection mold for golf balls

1998-06-25

2000-02-15

Davis, Robert

Plastic article or earthenware shaping or treating: apparatus

Distinct means to feed, support or manipulate preform stock...

Opposed registering coacting female molds

264278, 26432812, 425120, 425125, 425573, B29C 4514, B29C 4536

Patent

active

060245514

ABSTRACT:
Golf balls are prepared using an injection mold defining a spherical cavity and having a plurality of gates for admitting a molding material into the cavity therethrough. The gates are arranged such that the maximum flow distance that the molding material admitted from each gate moves along the cavity-defining wall may be not greater than .sqroot.3.pi.r/4 wherein r is a radius of the cavity. Golf balls of quality having a cover with a uniform gage of 1 mm or less can be molded without short shots.

REFERENCES:
patent: 2031786 (1936-02-01), Oldham
patent: 2376085 (1945-05-01), Radford et al.

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