US Patent 7819759 Golf club head

The present invention provides a golf club head capable of increasing carry on average even if being used by an amateur golfer who is prone to hit a ball by varied hit points of clubface. A golf club head 1 has a face part 2, a crown part 3, a sole part 4, a side part 5, and a hosel part 6, which are formed of titanium or a titanium alloy. A thick part 10 is provided near the central portion in the toe-heel direction of the rear portion of the crown part 3. The distance a between a foremost portion 10f the thick part 10 and the foremost portion of the crown part 3 is 20 to 80% of the total length L of the crown part 3.