Title:
ゴルフクラブヘッド
Document Type and Number:
Japanese Patent JP6417213
Kind Code:
B2
Abstract:
A golf club head including a face portion having an improved restitution factor is provided. The golf club head has a hollow structure and includes a face portion, a crown portion, a sole portion, and a side portion. The crown portion includes a first region that spreads out forward of a boundary line that extends from a heel side to a toe side, and a second region that spreads out rearward of the boundary line and is thinner than the first region. The crown portion further includes a protruding portion formed at position that is in a vicinity of the boundary line, is on the second region, and is rearward of the boundary line via a gap.
Inventors:
Mizutani Narihiro
Application Number:
JP2014262579A
Publication Date:
October 31, 2018
Filing Date:
December 25, 2014
Export Citation:
Assignee:
Sumitomo Rubber Industries, Ltd.
International Classes:
A63B53/04
Domestic Patent References:
| JP2008035963A | ||||
| JP11267251A | ||||
| JP2014210205A | ||||
| JP2010088630A | ||||
| JP2004358225A |
Foreign References:
| WO2014144334A1 | ||||
| US20080070721 | ||||
| US20060270490 |
Attorney, Agent or Firm:
Tachibana Kenji
Yamada Iichiro
Junya Tanaka
Hiroki Matsui
Yamashita Unknown
Yamada Iichiro
Junya Tanaka
Hiroki Matsui
Yamashita Unknown