Title:
ゴルフボール
Document Type and Number:
Japanese Patent JP7192456
Kind Code:
B2
Abstract:
A golf ball has a plurality of dimples 12 and a land 14 on a surface thereof. The golf ball further has a large number of minute projections 18 formed on surfaces of the dimples 12 and the land 14. The surface of the golf ball has an arithmetic average height Sa of not less than 0.5 μm and not greater than 30 μm. An average value Hav of heights H of the minute projections 18 is not less than 0.5 μm and not greater than 50 μm. A ratio Pp of a sum of areas of all the minute projections 18 to a surface area of a phantom sphere of the golf ball is not less than 7%. An average value Dav of diameters D of the minute projections 18 is not less than 5 μm and not greater than 50 μm.
Inventors:
Takahiro Sashima
Hiroki Takihara
Toshiyuki Takubo
Hiroki Takihara
Toshiyuki Takubo
Application Number:
JP2018229693A
Publication Date:
December 20, 2022
Filing Date:
December 07, 2018
Export Citation:
Assignee:
Sumitomo Rubber Industries, Ltd.
International Classes:
A63B37/00; A63B37/14
Domestic Patent References:
| JP2015142599A | ||||
| JP2014520654A | ||||
| JP2013138788A | ||||
| JP11290482A | ||||
| JP8238336A | ||||
| JP1268580A |
Foreign References:
| US20150148150 |
Attorney, Agent or Firm:
Aiko Patent Office, a patent business corporation