Invention Grant
- Patent Title: Golf ball
- Patent Title (中): 高尔夫球
-
Application No.: US14100804Application Date: 2013-12-09
-
Publication No.: US09345931B2Publication Date: 2016-05-24
- Inventor: Hyoungchol Kim , Masahide Onuki
- 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
- Agency: Birch, Stewart, Kolasch & Birch, LLP
- Priority: JP2012-286541 20121228
- Main IPC: A63B37/14
- IPC: A63B37/14 ; A63B37/00 ; G06T17/20

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.
Public/Granted literature
- US20140187356A1 GOLF BALL Public/Granted day:2014-07-03
Information query