Golf club

Patent metadata

Field	Value
Publication number	US-10987553-B2
Application number	US-202016839537-A
Country	US
Kind code	B2
Filing date	Apr 3, 2020
Priority date	Apr 26, 2019
Publication date	Apr 27, 2021
Grant date	Apr 27, 2021

Abstract

A golf club includes a head; a shaft; a grip; and a weight member that is located in a butt end region. The grip and the weight member constitute a grip-weight portion. The shaft, the grip, and the weight member constitute a shaft-grip-weight portion. The golf club has a length of greater than or equal to 45.0 inches. The golf club has a weight of less than 295 g. The head has a weight of greater than or equal to 195 g. The grip-weight portion has a weight of greater than or equal to 40 g. W 1 /W 3 is greater than or equal to 0.40, where W 1 represents a weight (g) of the butt end region, and W 3 represents a weight (g) of the shaft-grip-weight portion.

First claim

What is claimed is:

1. A golf club comprising:
a head;
a shaft including a tip end and a butt end;
a grip; and
a weight member that is located in a butt end region having a distance from a butt end of the grip of less than or equal to 100 mm, wherein
the grip and the weight member constitute a grip-weight portion,
the shaft, the grip, and the weight member constitute a shaft-grip-weight portion,
the golf club has a length of greater than or equal to 45.0 inches,
the golf club has a weight of less than 295 g,
the head has a weight of greater than or equal to 195 g,
the grip-weight portion has a weight of greater than or equal to 40 g, and
W 1 /W 3 is greater than or equal to 0.40, where W 1 represents a weight (g) of the butt end region, and W 3 represents a weight (g) of the shaft-grip-weight portion.

2. The golf club according to claim 1 , wherein the shaft has a weight of less than or equal to 40 g.

3. The golf club according to claim 1 , wherein a distance between a center of gravity of the shaft and the butt end of the shaft is less than or equal to 550 mm.

4. The golf club according to claim 3 , wherein the shaft-grip-weight portion has a gravity center ratio of less than or equal to 27%.

5. The golf club according to claim 4 , wherein a moment of inertia of the golf club about a center of gravity of the golf club is greater than or equal to 500×10 3 (g·cm 2 ).

6. The golf club according to claim 5 , wherein the golf club has a weight of less than or equal to 290 g.

7. The golf club according to claim 5 , wherein the golf club has a length of less than or equal to 46 inches.

8. The golf club according to claim 1 , wherein the grip has a weight of less than or equal to 35 g.

9. The golf club according to claim 8 , wherein the grip-weight portion has a gravity center ratio of less than or equal to 28%.

10. The golf club according to claim 9 , wherein the weight member has a length in an axial direction of greater than or equal to 5 mm and less than or equal to 50 mm.

11. The golf club according to claim 10 , wherein a distance between a tip-end-side end of the weight member and the butt end of the grip is greater than or equal to 15 mm and less than or equal to 70 mm.

12. The golf club according to claim 9 , wherein
the grip includes a grip body portion that has a cylindrical shape, and an end cap portion that closes an opening of the grip body portion on one end side and forms a butt end face of the grip, and
a part of the grip body portion is made of a foam rubber.

13. The golf club according to claim 9 , wherein
the grip includes a grip body portion that has a cylindrical shape, and an end cap portion that closes an opening of the grip body portion on one end side and forms a butt end face of the grip, and
the end cap portion is made of a non-foam rubber exclusively, and the grip body portion includes a foam rubber portion made of a foam rubber.

14. The golf club according to claim 9 , wherein
the grip includes a grip body portion that has a cylindrical shape, and an end cap portion that closes an opening of the grip body portion on one end side and forms a butt end face of the grip, and
the end cap portion has a specific gravity greater than an average specific gravity of the grip body portion.

15. The golf club according to claim 1 , wherein the grip has a weight of less than or equal to 33 g.

16. The golf club according to claim 1 , wherein the grip has a weight of less than or equal to 31 g.

Assignees

• Sumitomo Rubber Ind

Inventors

• Nakamura Takashi
• Mizutani Naruhiro
• Takasu Kenji
• KOHNO Daisuke
• Kimizuka Wataru
• Ueda Masahiko

Classifications

• A63B53/0412

  Volume · CPC title

• A63B2209/023

  Long, oriented fibres, e.g. wound filaments, woven fabrics, mats · CPC title

• B29L2031/5227

  Clubs · CPC title

• A63B60/14

  Coverings specially adapted for handles, e.g. sleeves or ribbons · CPC title

• A63B53/047

  iron-type · CPC title