Patent ID: 7497788
Filing Date: 2009-03-03
Classification: A63B

Abstract:
1. A hollow golf club head comprising: a face portion; a sole portion; a side portion; a crown portion; and a hosel portion, wherein a first part of the crown portion is made of fiber reinforced plastic; wherein at least the face portion and a second part of the crown portion continued to the face portion are made of metal; wherein the first part of the crown portion is joined to a rear end surface and to an internal surface of the second part of the crown portion; wherein an orientation direction of reinforcing fiber in the crown portion is controlled such that a rigidity in a front/rear direction is lower than a rigidity in a toe/heel direction; and the orientation of the fiber is controlled to make the elastic modulus in the front/rear direction lower than the elastic modulus in the toe/heel direction in the crown portion.