IRON-TYPE GOLF CLUB HEAD
Number of patents in Portfolio can not be more than 2000
United States of America
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Issued Date -
Apr 3, 2025
app pub date -
Sep 30, 2024
filing date -
Sep 30, 2024
priority date (Note) -
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status (Latency Note)
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Abstract
An iron-type golf club head comprises a face portion and a hosel portion which are integrally formed by forging or casting soft iron. The face portion has a face hardness hf (HV) which is defined by Vickers hardness at a depth of 4 mm from the hitting surface at a main impact point. The hosel portion has a reference hosel outer peripheral portion defining a hosel hardness hh (HV) which is an average value of Vickers hardness measured at positions around the hosel axis, and at a depth of 1 mm from the outer surface thereof. The hosel hardness hh is higher than the face hardness hf.
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