Yamaha Corporation

Atsushi Uchida

Tatsuya Hirakawa

Mutsumi Harada

Hiroaki Inoue

By hot pressing a cold rolled &bgr; type titanium alloy which has not been subjected to solution heat treatment into a predetermined shape, it is possible to obtain a part with a cold rolled metallurgical texture in its approximately central portion in the thickness direction, and a solution heat treatment metallurgical texture in its other portions, and a golf club head is manufactured using this part as a face member.

Golf club head and method of manufacturing the same

A metal wood golf club head including a sole plate and a weight body which is fastened to this sole plate via a spacer. A recess which accommodates the spacer and weight body is formed in a portion of the sole plate, an undercut part is formed in the inside circumferential portion of the recess, and a circumferential groove is formed in the outer circumferential portion of the weight body. When the weight body is press-fitted in the recess with the spacer in between, the spacer is forcibly engaged with the undercut part and circumferential groove, thus allowing the weight body to be firmly fastened to the recess of the sole plate of the club head.

Growing community of inventors

Hamamatsu, Japan

Atsushi Uchida