Patent ID: 7134970
Filing Date: 2006-11-14
Classification: A63B

Abstract:
1. A putter-head having a principal heel-toe axis, a bottom, a single attachment point for attachment of a putter-shaft to the putter-head, an impact-face defining a strike-area for putting contact with a golf ball, the strike-area having a lower extremity and an upper extremity, and wherein: (a) the putter-head has a center of mass located at a distance p millimeters behind the impact-face; (b) the putter-head has a moment of inertia/kilogrammes-millimeters (c) the putter-head has a radius of gyration of K millimeters about the principal heel-toe axis; (d) the single point of attachment of the putter-shaft to the puller-head is offset vertically from the principal heel-toe axis by a distance d (e) the ratio p/l is not more than 0.18; (f) the ratio d (g) the strike-area of the impact-face has a loft that increases upwardly from the lower extremity of the strike-area to the upper extremity of the strike-area; and (h) the loft of the strike-area is not more than +10 degrees and not less than −15 degrees.