发明名称 |
Golf ball mold and golf ball manufacturing method |
摘要 |
A golf ball mold that includes a mold body configured as a plurality of mold parts which have at least a parting surface that defines a parting line at a golf ball equator and removably mate to form a cavity having an inner wall with a plurality of dimple-forming protrusions thereon is provided. The golf ball mold includes a support pin which has an end face with a plurality of dimple-forming protrusions thereon and is extendable into and retractable from the cavity. The support pin extends into the cavity to support a center sphere and, when in a retracted state, the end face thereof defines a portion of the inner wall of the cavity. The end face of the support pin includes a pole of the cavity and has a peripheral edge which intersects a parallel of latitude at 10 degrees from the pole. |
申请公布号 |
US9108347(B2) |
申请公布日期 |
2015.08.18 |
申请号 |
US201313785841 |
申请日期 |
2013.03.05 |
申请人 |
BRIDGESTONE SPORTS CO., LTD. |
发明人 |
Nakagawa Takuma;Sato Katsunori;Omura Yoichi |
分类号 |
B29C45/14;A63B37/00;A63B45/00;B29C45/37;B29L31/54 |
主分类号 |
B29C45/14 |
代理机构 |
Sughrue Mion, PLLC |
代理人 |
Sughrue Mion, PLLC |
主权项 |
1. The method of manufacturing a golf ball of using a golf ball mold comprising a mold body configured as a plurality of mold parts which have at least a parting surface that defines a parting line at a golf ball equator and removably mate to form a cavity having an inner wall with a plurality of dimple-forming protrusions thereon, and a support pin which has an end face with a plurality of dimple-forming protrusions thereon and is extendable into and retractable from the cavity, the support pin extending into the cavity to support a center sphere and, when in a retracted state, the end face thereof defining a portion of the inner wall of the cavity,
wherein the end face of the support pin includes a pole of the cavity and has a peripheral edge which intersects a parallel of latitude at 10 degrees from the pole, comprising the steps of, molding a cover by placing a center sphere in the mold cavity formed by removably mating the plurality of mold parts which have at least a parting surface that defines a parting line at a golf ball equator, and supporting the center sphere with the support pin provided in the mold, then injecting a cover-forming material between the center sphere and the cavity inner wall while at the same time retracting the support pin. |
地址 |
Tokyo JP |