Patent Number: 7,611,423

Title: Golf club head

Abstract: This invention provides a golf club head having a first viscoelastic body made of a first viscoelastic material and a second viscoelastic body made of a second viscoelastic material with a loss coefficient the temperature dependence of which is different from that of a loss coefficient of the first viscoelastic material.

Inventors: Matsunaga; Hideo (Saitama, JP), Ban; Wataru (Saitama, JP), Shimazaki; Hideo (Tokyo, JP)

Assignee: Bridgestone Sports Co., Ltd.

International Classification: A63B 53/04 (20060101)

Expiration Date: 1/03/02017