Patent ID: 7431660
Filing Date: 2008-10-07
Classification: A63B

Abstract:
1. A putter-type club head comprising a head main body having a front surface defining a face for hitting a ball and a rear surface opposite the front surface, and a plurality of rod members firmly fixed to said head main body and extending beyond the rear surface of the head main body, said rod members comprising a toe side rod member provided in a toe side of the head main body, a heel side rod member provided in a heel side of the head main body and an intermediate rod member provided therebetween, and each said rod member having a high specific gravity larger than said head main body, wherein a part of each rod member extends perpendicularly to a horizontal tangent line which is in contact with a sweet spot of the face in a plan view of the club head, each rod member is provided without contacting each other, and wherein a protruding length Lt (mm) from the rear surface of the head main body to a rear end of the toe side rod member, a protruding length Lc (mm) from the rear surface of the head main body to a rear end of the intermediate rod member and a protruding length Lh (mm) from the rear surface of the head main body to a rear end of the heel side rod member satisfy the following relation: