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US 2011/0086725 A1Published application
Golf Club Head
AssigneeBridgestone Sports Co., Ltd.
InventorsHisashi Yamagishi, Yasunori Imamoto
Life of this patent
Estimating the term…
Abstract
The present invention provides a golf club head that can hit a ball with a sufficiently large amount of backspin. The golf club head according to the present invention is an iron type golf club head made of a metal and including a flat face. A plurality of traces are formed by milling on the face. The pitch of the traces is between 0.1 mm and 1 mm.
Claims7
1-9. (canceled)
An iron type golf club head made of metal and including a comprising:
- a plurality of traces formed by milling on said face,
- wherein the pitch of said traces is between 0.1 mm and 1 m
- no plating film is formed on said face, and
- said face undergoes at least nitriding treatment.
1 more element
Dependencies are inferred from the claim text.