Iron golf club and method for manufacturing the same
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United States of America Patent
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Sep 16, 2014
Grant Date -
Aug 23, 2012
app pub date -
Feb 16, 2012
filing date -
Feb 17, 2011
priority date (Note) -
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status (Latency Note)
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Abstract
An iron golf club is one made of metal material, which is manufactured integrally through press working and gives dedication to improvement of golf club design. The head (1) has a concave portion (4) surrounded by a convex portion (6) in the backside portion (3) behind the face portion (2). Treatment for making a mirror surface is applied to the bottom portion (5) of this concave portion through press working with a fixed die (11) having a surface roughness finer than the mirror surface for which treatment for making a mirror surface is to be performed and a movable die (10). Press working of this bottom portion can be also performed through treatment for making a mirror surface with a liner member (17).
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