Patent ID: 8062146

Claim:
A putter head, comprising: a putter body including a ball striking face, a top, and a bottom, wherein an exposed ball striking surface at a central portion of the ball striking face between the top and the bottom includes polymeric material and metal material, and wherein a top-to-bottom cross section of the exposed ball striking surface at the central portion of the ball striking face has a structure that includes alternating polymeric material and metal material and a plurality of grooves including: (a) a first groove defining a first recess in the exposed ball striking surface, wherein, in the cross section, a first edge of the first groove constitutes metal material and a second edge of the first groove opposite the first edge constitutes polymeric material; (b) a second groove defining a second recess in the exposed ball striking surface closer to the top than the first groove, wherein, in the cross section, a first edge of the second groove constitutes metal material and a second edge of the second groove opposite the first edge constitutes polymeric material; and (c) a third groove defining a third recess in the exposed ball striking surface closer to the top than the second groove, wherein, in the cross section, a first edge of the third groove constitutes metal material and a second edge of the third groove opposite the first edge constitutes polymeric material.