Invention Grant
- Patent Title: Golf club head
- Patent Title (中): 高尔夫球杆头
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Application No.: US12178069Application Date: 2008-07-23
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Publication No.: US07935003B2Publication Date: 2011-05-03
- Inventor: Hideo Matsunaga , Hiroshi Takahashi , Makoto Kubota
- Applicant: Hideo Matsunaga , Hiroshi Takahashi , Makoto Kubota
- Applicant Address: JP Tokyo
- Assignee: Bridgestone Sports Co., Ltd.
- Current Assignee: Bridgestone Sports Co., Ltd.
- Current Assignee Address: JP Tokyo
- Agency: Sughrue Mion, PLLC
- Priority: JPP2007-249184 20070926
- Main IPC: A63B53/04
- IPC: A63B53/04

Abstract:
A golf club head includes a face member having a ball-striking face and an oval thick portion positioned in a central portion of the ball-striking face. The oval thick portion has an oval shape having recesses formed by recessing both sides in a major axis direction in an arc-shaped fashion. The recesses are directed to a toe-side upper portion and a heel-side lower portion. The thickness of the thick portion becomes thickest at a central portion and is gradually reduced from the central portion towards the periphery. The face member is formed such that a portion outside the thick portion is thinner than the thick portion. An occupancy rate of the oval thick portion in the ball-striking face is in a range of 25 to 45%.
Public/Granted literature
- US20090082134A1 GOLF CLUB HEAD Public/Granted day:2009-03-26
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