US Patent 8083611 Putter-type golf club head

A golf club head according to one or more aspects of the present invention may include a body comprising a front surface having an opening therein for receiving a primary insert. One or more secondary inserts may be disposed in the primary insert and may include a leading surface, a trailing surface, and at least one intermediate surface. The leading surface may be physically exposed to the elements, the trailing surface may be exposed to the eye, and the at least one intermediate surface may be physically exposed to the elements and/or visually exposed.