Patent ID: 8221264

Claim:
A club head comprising: a strike portion comprising: a strike face; a back face opposite the strike face; and a first trench set comprising a first trench and a second trench in the back face; a loft plane; and a back plane at the back face and substantially parallel to the loft plane; wherein: the club head comprises at least one of a wedge-type head or an iron-type head; the first trench comprises: a first shallow portion set comprising one or more first shallow portions; and a first deep portion set comprising two or more first deep portions that are deeper, relative to the back plane, than the one or more first shallow portions; at least a first deep portion of the first deep portion set is wider, at the back face, than at least a first shallow portion of the first shallow portion set; at least the first shallow portion of the first shallow portion set is shallower, relative to the back plane, than at least the first deep portion of the first deep portion set; the back face of the strike portion comprises: a first rib comprising: a first narrow rib portion of one or more narrow rib portions; and a first wide rib portion of one or more wide rib portions wider than the one or more narrow rib portions; the first rib is located between the first and second trenches; and each of the one or more wide rib portions is centered about a centerline of the first rib.