GOLF CLUB HAVING REFERENCE SYSTEM FOR IMPROVED ADDRESS ACCURACY

WIPO Patent Application WO/2021/015487

A1

The present invention relates to a golf club characterized in that: a socket includes a hollow formed therein through which a shaft passes; an outer diameter of the socket at an upper side thereof is smaller than an outer diameter of the socket at a lower side thereof, and thus the socket has an inclined surface gradually widening from the upper side to the lower side; a reference system fixing groove to which a tank is fixed in the direction of a bottom of a club head is formed in the socket such that a reference system is installed therein; a vertical inner surface is formed on the reference system fixing groove so as to maintain the same angle as the shaft; an insertion space is formed at a front portion of the socket such that the reference system is coupled to and decoupled from the insertion space in front of the socket in an assembly manner; the reference system is surrounded by the reference system fixing groove, is formed so as to be transparent and to extend in the form of a circular tank which is filled by injecting liquid into a bore thereof, and is installed such that a color display part of a circular shape is floated on the uppermost side of the liquid; and a criss-cross line of a criss-cross shape is formed in the center of the upper side of the tank so as to provide an accurate starting point.

KIM JEONG SIK (KR)
CHOI JAE HYEONG (KR)

PCT/KR2020/009382

January 28, 2021

July 16, 2020

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KIM JEONG SIK (KR)
CHOI JAE HYEONG (KR)

A63B69/36; G01C9/00

KR20170000502U	2017-02-07
US5228695A	1993-07-20
US7226362B1	2007-06-05
US4884813A	1989-12-05
KR101965567B1	2019-04-04
KR102105267B1	2020-04-27

YOON, Hee Sik (KR)

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