Non-circular vent pin for golf ball injection mold and golf...

A - Human Necessities – 63 – B

Patent

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Details

A63B 37/14 (2006.01) A63B 37/00 (2006.01) A63B 45/00 (2006.01) B29C 33/10 (2006.01) B29C 45/14 (2006.01) B29C 45/34 (2006.01)

Patent

CA 2426340

An improved vent pin for a golf ball injection mold is characterized by a non- circular configuration so that a non-circular dimple (P) can be formed at one or both poles of the golf ball. The vent pin is coaxially arranged within a passage in the injection mold which is aligned with a radius of the ball which passes through one of the poles thereof. The pin is operable between a normal position where the end of the pin closes the passage lower end and a retracted position where the pin end is withdrawn into the passage so that air from a cavity of the mold where the cover layer of the ball is formed can be vented during delivery of thermoplastic material to the cavity to form the golf ball cover.

La présente invention concerne un moule d'injection de balle de golf caractérisé par une configuration non circulaire de façon à pouvoir réaliser une fossette non circulaire (P) à l'un au moins des pôles de la balle. Ce pointeau est disposé coaxialement à l'intérieur d'un passage dans le moule d'injection, dans l'alignement d'un rayon de la balle passant par l'un de ses pôles. Ce pointeau est mobile entre une position normale et une position rentrée. En position normale, l'extrémité du pointeau ferme l'extrémité inférieure du passage. En position rentrée, l'extrémité du pointeau est rentrée dans le passage de façon que l'air provenant d'une cavité du moule utilisée pour la formation de la couche de couverture de la basse se mette à l'atmosphère pendant l'apport de matériau thermoplastique dans la cavité de façon à former la couverture de la balle de golf.

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