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Hollow golf club head

  • US 7,204,768 B2
  • Filed: 08/15/2005
  • Issued: 04/17/2007
  • Est. Priority Date: 12/28/2001
  • Status: Expired due to Fees
First Claim
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1. A hollow golf club head comprising a hollow head body having a crown portion, a face portion, a sole portion and a neck portion, wherein all of said portions are made of metal and wherein a part of the crown portion and a part of the face portion of the head body are composed of a material different from said metal, said part of the crown portion being located on an outer surface of the crown portion and said part of the face portion being located on an inner surface of the face portion and a ratio (pb/pc) of a specific gravity pb of a portion of said head body excluding the crown portion and the face portion and a specific gravity pc of said crown portion including said part thereof is set equal to or greater than 1.3.

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