Retractable pin mold

Details Retractable pin mold Retractable pin mold

1989-10-31

1990-09-25

Hoag, Willard

Plastic article or earthenware shaping or treating: apparatus

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

Opposed registering coacting female molds

264275, 425127, 4251291, 425549, 425562, 425570, 425572, B29C 4514, B29C 4536, B29C 4572

Patent

active

049590006

ABSTRACT:
An improved retractable pin mold for golf balls has a gate valve positioned at the pole of the core.

REFERENCES:
patent: 721462 (1903-02-01), Richards
patent: 2361348 (1944-10-01), Dickson et al.
patent: 2376085 (1945-05-01), Radford et al.

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