Invention Application
- Patent Title: Golf club
- Patent Title (中): 高尔夫俱乐部
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Application No.: US10428037Application Date: 2003-05-02
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Publication No.: US20040121852A1Publication Date: 2004-06-24
- Inventor: Masaei Tsurumaki
- Applicant: K.K. ENDO SEISAKUSHO
- Applicant Address: JP Tsubame-shi
- Assignee: K.K. ENDO SEISAKUSHO
- Current Assignee: K.K. ENDO SEISAKUSHO
- Current Assignee Address: JP Tsubame-shi
- Priority: JP2002-369637 20021220
- Main IPC: A63B053/04
- IPC: A63B053/04

Abstract:
An object of the present invention is to provide a golf club in which carry does not deteriorate even when a golf ball is struck in a lower position on a face portion. In a golf club constituted by a face portion 4 having a hitting surface, a sole portion 3 which forms a lower portion, and a crown portion 5 which forms an upper portion, the sole portion 3 of a driver club head 1 is improved. A deformation portion B which is capable of elastic deformation is provided in concavoconvex form on the sole portion 3 in a position near the face portion 4. This deformation portion B is constituted by a protrusion 10 which is formed such that the sole portion 3 forms an obtuse angle null, and a concave groove 11 which is formed in a direction linking a toe portion and a heel portion by a protrusion protruding towards the crown portion 5. In order to increase hitting distance, restitution in a lower position on the face portion is increased.
Public/Granted literature
- US06887165B2 Golf club Public/Granted day:2005-05-03
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