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Hollow golf club head
 
   
Document Number
US Patent 7568984
Issued Date
August 4, 2009
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Abstract
A hollow golf club head is provided that includes a face portion, a sole portion extending backward from a lower portion of the face portion to form a bottom portion of the golf club head, a crown portion extending backward from an upper portion of the face portion to form an upper portion of the golf club head, and a vibration absorbing layer in a film form composed of an elastic body on an inner surface of the crown portion. The sole portion and the crown portion are configured such that a ratio of a rigidity of the sole portion to a rigidity of the crown portion is 1: 0.1 to 0.8, and the vibration absorbing layer has a ring shape covering an outer peripheral portion of the crown portion. The launch angle of a ball is increased so that the traveling distance of a shot can be increased.
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Number of Claims:
12
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Published
August 4, 2009
Application Number
11/508,211
Filed
August 23, 2006
US Classification
473/332   473/345 473/349
Int'l Classification
A63B   53/04   (20060101)  
Attorney/Law Firm
Priority Data
Aug 23, 2005 [JP] 2005-241747 Apr 14, 2006 [JP] 2006-112343
USPTO Field of Search
473/324   473/325   473/326   473/327   473/328   473/329   473/330   473/331   473/332   473/333   473/334   473/335   473/336   473/337   473/338   473/339   473/340   473/341   473/342   473/343   473/344   473/345   473/346   473/347   473/348   473/349   473/350   473/324   473/325   473/326   473/327   473/328   473/329   473/330   473/331   473/332   473/333   473/334   473/335   473/336   473/337   473/338   473/339   473/340   473/341   473/342   473/343   473/344   473/345   473/346   473/347   473/348   473/349   473/350  
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