US2007018396A1PendingUtilityA1

Method for making iron golf club set

Assignee: BRIDGESTONE SPORTS CO LTDPriority: Jul 25, 2005Filed: Dec 22, 2005Published: Jan 25, 2007
Est. expiryJul 25, 2025(expired)· nominal 20-yr term from priority
Inventors:Ryota Kajita
A63B 53/00A63B 60/42A63B 53/005A63B 69/3605
46
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Claims

Abstract

A method for making an iron golf club set includes selecting a plurality of iron golf clubs including a pitching wedge, wherein a difference in carry between each pair of golf clubs, which have consecutive club numbers, is substantially equal to a particular value; further selecting a minimum-carry golf club, which has a loft angle in a range of 55 to 60 degrees and a club length in a range of 34.5 inches to 35.5 inches; measuring carries of at least the pitching wedge and the minimum-carry golf club to obtain a difference in the carry between the pitching wedge and the minimum-carry golf club and; and still further selecting at least one golf club on a basis of the obtained difference in the carry so that a difference in carry between each pair of golf clubs, which have consecutive club numbers, is substantially equal to the particular value.

Claims

exact text as granted — not AI-modified
1 . A method for making an iron golf club set, the method comprising: 
 selecting a plurality of iron golf clubs including a pitching wedge, wherein a difference in carry between each pair of golf clubs, which are selected from the plurality of iron golf clubs and have consecutive club numbers, is substantially equal to a particular value;    further selecting a minimum-carry golf club, which has a loft angle in a range of 55 to 60 degrees and a club length in a range of 34.5 inches to 35.5 inches;    measuring carries of at least the pitching wedge and the minimum-carry golf club to obtain a difference in the carry between the pitching wedge and the minimum-carry golf club and a loft angle of the pitching wedge and the loft angle of the minimum-carry golf club; and    still further selecting at least one golf club on a basis of the obtained difference in the carry, the obtained loft angle of the pitching wedge and the obtained loft angle of the minimum-carry golf club so that a difference in carry between each pair of golf clubs, which are selected from the group consisting of the pitching wedge, the minimum-carry golf club and the at least one golf club and have consecutive club numbers, is substantially equal to the particular value.    
   
   
       2 . The method according to  claim 1 , wherein: 
 when a sole surface of a head body of the minimum-carry golf club is placed on the ground, a leading edge of a face surface of the head body is located at or below a geometric contact point between the face surface and a golf ball placed on the ground, and    the minimum-carry golf club comprises: 
 a fillet portion, which is posterior to the leading edge; and  
 a curved surface between a tip end of the fillet portion and the sole surface, the curved surface being concaved downward.  
   
   
   
       3 . The method according to  claim 1 , further comprising: 
 plotting the obtained carries in a graph, wherein:    the at least one golf club head is selected using the graph.    
   
   
       4 . The method according to  claim 2 , wherein the at least one golf club has the same head structure as that of the minimum-carry golf club.  
   
   
       5 . A method for making an iron golf club set, the method comprising: 
 selecting a pitching wedge and a minimum-carry golf club, which has a loft angle in a range of 55 to 60 degrees and a club length in a range of 34.5 inches to 35.5 inches;    measuring carries of the pitching wedge and the minimum-carry golf club to obtain a difference in the carry between the pitching wedge and the minimum-carry golf club and a loft angle of the pitching wedge and the loft angle of the minimum-carry golf club; and    further selecting at least one golf club on a basis of the obtained difference in the carry, the obtained loft angle of the pitching wedge and the obtained loft angle of the minimum-carry golf club so that a difference in carry between each pair of golf clubs, which are selected from the group consisting of the pitching wedge, the minimum-carry golf club and the at least one golf club and have consecutive club numbers, is substantially equal to each other.

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