Invention Application
- Patent Title: GOLF BALL
- Patent Title (中): 高尔夫球
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Application No.: US13723937Application Date: 2012-12-21
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Publication No.: US20130196791A1Publication Date: 2013-08-01
- Inventor: Takahiro SAJIMA , Kazuhiko ISOGAWA , Kosuke TACHIBANA , Hidetaka INOUE
- Applicant: DUNLOP SPORTS CO. LTD.
- Applicant Address: JP Kobe-shi
- Assignee: DUNLOP SPORTS CO. LTD.
- Current Assignee: DUNLOP SPORTS CO. LTD.
- Current Assignee Address: JP Kobe-shi
- Priority: JP2012-017172 20120130
- Main IPC: A63B37/00
- IPC: A63B37/00
Abstract:
A golf ball 2 has a large number of dimples 10 on a surface thereof. The golf ball 2 meets the following mathematical formula (I): Y≦3.8*X−2.894 (I), where X represents a ratio of a sum of areas of all the dimples 10 to a surface area of a phantom sphere of the golf ball, and Y represents a standard deviation (mm) of diameters of all the dimples 10.
Public/Granted literature
- US2143553A Emergency brake for automobiles Public/Granted day:1939-01-10
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