CPC A63B 53/0475 (2013.01) [A63B 2053/0479 (2013.01); A63B 60/54 (2015.10); A63B 2209/00 (2013.01)] | 20 Claims |
1. An iron-type golf club head comprising:
a hollow body portion having a volume of less than or equal to 100 cubic centimeters, the hollow body portion having a front opening at a front portion of the hollow body portion;
a face portion coupled to the front portion to close the front opening;
a filler material in the hollow body portion and coupled to the face portion;
an external mass portion;
an internal mass portion having a different configuration than the external mass portion;
a first port;
a second port below a first port;
a port sleeve in the second port and comprising a bore configured to receive the external mass portion; and
a third port inside the hollow body portion, the third port configured to receive the internal mass portion,
wherein a material of the port sleeve comprises:
a lower density than a density of a material of the hollow body portion;
a lower density than a material of the external mass portion;
a lower density than a density of a material of the internal mass portion; and
a greater density than a density of a material of the filler material.
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