Title:
Golf ball
Document Type and Number:
Japanese Patent JP6214361
Kind Code:
B2
Abstract:
A golf ball (2) has a large number of dimples (8) on a surface thereof. A trajectory of the golf ball (2) is divided into first to fourth segments. An average CD1 of drag coefficients CD and an average CL1 of lift coefficients CL in the first segment are equal to or less than 0.225 and 0.180, respectively. An average CD2 of drag coefficients CD and an average CL2 of lift coefficients CL in the second segment are equal to or less than 0.250 and 0.220, respectively. An average CD3 of drag coefficients CD and an average CL3 of lift coefficients CL in the third segment are equal to or greater than 0.260 and 0.220, respectively. An average CD4 of drag coefficients CD and an average CL4 of lift coefficients CL in the fourth segment are equal to or greater than 0.250 and 0.200, respectively.
Inventors:
Kim Satoshi
Masahide Onuki
Masahide Onuki
Application Number:
JP2013245667A
Publication Date:
October 18, 2017
Filing Date:
November 28, 2013
Export Citation:
Assignee:
Dunlop Sports Co., Ltd.
International Classes:
A63B37/00
Domestic Patent References:
| JP2009291315A | ||||
| JP2004505735A | ||||
| JP2012239886A | ||||
| JP2009060999A |
Foreign References:
| US20090298618 |
Attorney, Agent or Firm:
Kengo Oka
Sumitomo Norio
Kuroyoshi Murohashi
Hiroshi Kasakawa
Kei Someya
Yukari Imamura
Sumitomo Norio
Kuroyoshi Murohashi
Hiroshi Kasakawa
Kei Someya
Yukari Imamura
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