GOLF CLUB SHAFT
Number of patents in Portfolio can not be more than 2000
United States of America Patent
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Issued Date -
Oct 10, 2024
app pub date -
Mar 15, 2024
filing date -
Apr 7, 2023
priority date (Note) -
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status (Latency Note)
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Abstract
A golf club shaft includes a plurality of fiber reinforced resin layers, a tip end, and a butt end. The golf club shaft also includes a plurality of extending portions each having an axial directional length of greater than 25 mm, and a plurality of transition portions each having an axial directional length of less than or equal to 25 mm and each having an outer diameter changing by 0.3 mm or more. Each of the transition portions connects two of the extending portions. The extending portions include at least one intermediate portion connecting two of the transition portions. The number of the transition portions is greater than or equal to 2, and may be greater than or equal to 3. The extending portions may include a tip extending portion and a butt extending portion.
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