Patent ID: 9731174
Date: 2017-08-15
CPC Classifications: A63B

Claim:
1. A hollow type golf club head comprising: a head main body including a metallic material, the head main body comprising: a sole portion comprising: a primary sole portion having a sole thickness between 0.7 and 1.2 mm; and a recessed portion being recessed relative to the primary sole portion, the recessed portion including a bottom wall and a side wall that is slanted relative to the primary sole portion, the bottom wall having a bottom wall thickness that is between 0.5 and 1.0 mm and at least 0.2 mm less than the sole thickness, the bottom wall including at least a first tier and a second tier, the first tier having a first height measured normal to a general contour of an exterior surface of the sole portion and the second tier having a second height measured normal to the general contour of the exterior surface of the sole portion; a weight port within the bottom wall; and a weight insert secured within the weight port, wherein the first height and the second height are different.