Golf club

Patent metadata

Field	Value
Publication number	US-10434387-B2
Application number	US-201816028523-A
Country	US
Kind code	B2
Filing date	Jul 6, 2018
Priority date	Jul 10, 2017
Publication date	Oct 8, 2019
Grant date	Oct 8, 2019

Abstract

A golf club includes a head, a shaft, and a grip. The golf club has a club vibration frequency of less than or equal to 210 cpm. The golf club has a swing weight of greater than or equal to D5. With the golf club, a force acting on the player's body during a swing can be reduced. The golf club can stabilize swing.

First claim

What is claimed is:

1. A golf club comprising:
a head;
a shaft; and
a grip, wherein
a club vibration frequency is less than or equal to 210 cpm,
a swing weight is greater than or equal to D 5 , and
when a distance between a butt-side end of the grip and a center of gravity of the grip is denoted by Lg 1 , and a length of the grip is denoted by Lg 2 , Lg 1 /Lg 2 is greater than or equal to 0.37.

2. The golf club according to claim 1 , wherein
a grip weight Wg is less than or equal to 30 g.

3. The golf club according to claim 1 , wherein,
when a weight of the head is denoted by Wh, and a weight of the club is denoted by Wc, Wh/Wc is greater than or equal to 0.72.

4. The golf club according to claim 1 , wherein
a club length is greater than or equal to 45.7 inches and less than or equal to 46.5 inches.

5. The golf club according to claim 1 , wherein
a shaft weight Ws is less than 50 g.

6. The golf club according to claim 1 , wherein
a shaft weight Ws is less than or equal to 43 g.

7. The golf club according to claim 1 , wherein
a club weight Wc is less than or equal to 290 g.

8. The golf club according to claim 1 , wherein
a club weight Wc is less than or equal to 272 g.

9. A golf club comprising:
a head;
a shaft; and
a grip, wherein
a club vibration frequency is less than or equal to 210 cpm,
a swing weight is greater than or equal to D 5 ,
a shoulder center grip GLL calculated by Equation (1) below is less than or equal to 140 kg·cm 2 :
Shoulder center grip GLL=Wg×L×L   (1),

Wg is a weight (kg) of the grip, and L is a value calculated by Equation (2) below:
L =[60 2 +( Lg 1) 2 ] 1/2   (2), and

Lg 1 is a distance (cm) between a butt-side end of the grip and a center of gravity of the grip.

10. A golf club comprising:
a head;
a shaft; and
a grip, wherein
a club vibration frequency is less than or equal to 210 cpm,
a swing weight is greater than or equal to D 5 , and
when a distance between a butt end of the shaft and a center of gravity of the shaft is denoted by Lf 1 , and a full length of the shaft is denoted by Lf 2 , Lf 1 /Lf 2 is less than or equal to 0.46.

11. A golf club comprising:
a head;
a shaft; and
a grip, wherein
a club vibration frequency is less than or equal to 210 cpm,
a swing weight is greater than or equal to D 5 , and
when a distance between a butt end of the shaft and a center of gravity of the shaft is denoted by Lf 1 , and a full length of the shaft is denoted by Lf 2 , Lf 1 /Lf 2 is less than or equal to 0.44.

Assignees

• Sumitomo Rubber Ind

Inventors

• Mizutani Naruhiro
• Hayase Seiji
• Takasu Kenji
• Nakano Takashi
• KOHNO Daisuke

Classifications

• A63B53/10 Primary

  Non-metallic shafts · CPC title

• A63B53/00

  Golf clubs · CPC title

• A63B53/08

  with special arrangements for obtaining a variable impact · CPC title

• A63B60/42 Primary

  Devices for measuring, verifying, correcting or customising the inherent characteristics of golf clubs, bats, rackets or the like, e.g. measuring the maximum torque a batting shaft can withstand · CPC title

• A63B60/22

  Adjustable handles · CPC title