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1. (WO2001000282) GOLF CLUB HEAD, GOLF CLUB, AND GOLF CLUB SET

Pub. No.:    WO/2001/000282    International Application No.:    PCT/JP2000/003335
Publication Date: Fri Jan 05 00:59:59 CET 2001 International Filing Date: Thu May 25 01:59:59 CEST 2000
IPC: A63B 53/00
A63B 53/04
Applicants: MIZUNO CORPORATION

IWATA, Mototaka

SAKAI, Koji

NAGAO, Hiroshi

KIMURA, Takashi

MIZOBATA, Masahiro

Inventors: IWATA, Mototaka

SAKAI, Koji

NAGAO, Hiroshi

KIMURA, Takashi

MIZOBATA, Masahiro

Title: GOLF CLUB HEAD, GOLF CLUB, AND GOLF CLUB SET
Abstract:
A golf club head (1, 101) comprising an ellipsoid of inertia (10, 110), wherein, where three major axes of the ellipsoid of inertia crossing perpendicularly to each other at an origin are designated as an axis I1, axis I2, and axis I3 in the order of decreasing magnitude of moment of inertia about these axes, the ratio (A/B) of a cross-section A provided when the ellipsoid of inertia (10, 110) is cut on a plane passing the origin and in parallel with a face surface (11, 111) to a cross-section B provided when the ellipsoid of inertia is cut on a plane including the axes I1 and I2 is 1 or more and 1.4 or less.