| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide a golf putter where a head track in stroke is stabilized and the direction of a face surface and the position of a hitting point in impact are stabilized. <P>SOLUTION: The golf putter is provided with a putter head 3 which is set to a weight balance where three moments of inertia M1, M2 and M3 satisfy a relational expression of M2>M3>M1 and a value of (M3-M1) is 50 to 1500(g cm<SP>2</SP>). However, M1 is the moment of inertia of the head 3 around a first axis A1 passing through the center of gravity G of the head 3 and parallel to the face surface 2 and a horizontal surface. M2 is the moment of inertia of the head around a second axis A2 which is an axis in a vertical direction passing through the center of gravity G. M3 is the moment of inertia of the head 3 around a third axis A3 which passes through the center of gravity G of the head 3 and which is vertical to the second axis A2. <P>COPYRIGHT: (C)2005,JPO&NCIPI</p> |
