CPC A63B 53/0466 (2013.01) [A63B 53/045 (2020.08); A63B 53/0412 (2020.08); A63B 53/0437 (2020.08)] | 9 Claims |
1. A hollow-type golf club head that, when oriented in a reference position, comprises:
a striking wall having a striking face configured to impact a golf ball, the striking face including a face center and a central apex;
a sole portion;
a top portion having an exterior surface, an interior surface, and a step-down portion in which a crown of the club head moves toward the sole portion;
a hosel extending from the top portion and defining a hosel axis;
a plurality of external ribs located on the exterior surface of the top portion, the plurality of external ribs: (i) each being generally elongate in a front-to-rear direction, (ii) spaced apart from each other by a distance D2 that is between 10 mm and 20 mm, (iii) spaced rearwardly from the central apex by a distance D3 between 25 mm and 45 mm, and (iv) including:
a first external rib;
a second external rib located toe-ward of the first external rib; and
a third external rib located heel-ward of the first external rib; and
at least one internal rib (i) located on the interior surface of the top portion, (ii) generally elongate in the front-to-rear direction, (iii) longer in length than the plurality of external ribs, and (iv) when viewed in a top view, located between the first external rib and the second external rib and entirely spaced from the first external rib and the second external rib by a distance of at least 2 mm.
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