| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide a golf club set capable of equalizing a difference between a backspin rate in a dry condition and a backspin rate in a wet condition. <P>SOLUTION: In a golf club set including n pieces of golf clubs (n is an integer of equal to or greater than 3), when groove depths D1 of the clubs are defined as D1(1), D1(2), ..., D1(n) in an order from the club having the smallest real loft angle L1, and groove widths W1 of the clubs measured by the 30 degree method of measurement are defined as W1(1), W1(2), ..., W1(n) in an order from the club having the smallest real loft angle L1, D1(1)≤D1(2)≤...≤D1(n) and D1(1)<D1(n) are satisfied, a ratio [D1(m)/D1(m-1)] of the groove depths D1 between two golf clubs with adjacent club numbers is 1.0 or greater and 3.0 or less, W1(1)≤W1(2)≤...≤W1(n) is satisfied, and a ratio [W1(m)/W1(m-1)] of the groove widths W1 between two golf clubs with adjacent club numbers is 1.0 or greater and 3.0 or less. <P>COPYRIGHT: (C)2011,JPO&INPIT</p> |
