Set of golf clubs

Patent metadata

Field	Value
Publication number	US-10076692-B2
Application number	US-201715677462-A
Country	US
Kind code	B2
Filing date	Aug 15, 2017
Priority date	Sep 13, 2007
Publication date	Sep 18, 2018
Grant date	Sep 18, 2018

Abstract

A set of golf clubs including golf club heads having improved mass distribution characteristics. The set includes golf club heads having a club head main body including a hitting face, a muscle back shell and a weight insert disposed in the muscle back shell. The golf club heads have relatively low blade length while maintaining high moment of inertia.

First claim

We claim:

1. A set of iron-type golf clubs, comprising:
a golf club including a golf club head, a grip and a shaft interposed between, and coupled to, the golf club head and the grip,
wherein the golf club head includes an upper portion defining an open rear cavity, a lower muscle portion defining an enclosed cavity, and at least one weight member disposed in the lower muscle portion,
wherein the golf club head has a blade length (BL) of less than 81 mm, wherein the blade length is a distance measured parallel to a horizontal X-axis that extends in a heel to toe direction between a vertical projection to a ground plane of the most toe-ward location on the golf club head and the intersection of a hosel axis and the ground plane when the golf club head is placed at address,
wherein a moment of inertia about a vertical axis (MOI-y) extending through a center of gravity of the golf club head is at least 240 kgmm 2 ,
wherein a ratio MOI-y/BL is at least 3.2, and
wherein the golf club has a loft less than about 28°.

2. The set of iron-type golf clubs of claim 1 , wherein a height above the ground plane of the center of gravity of the golf club head is between about 17.5 mm and about 19.0 mm.

3. The set of iron-type golf clubs of claim 2 , wherein the height of the center of gravity above the ground plane is less than 18.3 mm.

4. The set of iron-type golf clubs of claim 1 , wherein the golf club head includes a body member and a shell member, wherein the open rear cavity is defined by an upper portion of the body member, and wherein the shell member and a lower portion of the body member combine to define the enclosed cavity.

5. The set of iron-type golf clubs of claim 4 , wherein the weight member is constructed at least partially from tungsten and disposed in a toe portion of the lower muscle portion, and wherein the shell member is welded to the body member.

6. The set of iron-type golf clubs of claim 1 , wherein the golf club has a loft of about 24°.

7. The set of iron-type golf clubs of claim 1 , wherein the ratio MOI-Y/BL is at least 3.3.

8. The set of iron-type golf clubs of claim 7 , wherein the ratio MOI-Y/BL is at least 3.4.

9. The set of iron-type golf clubs of claim 1 , wherein the MOI-Y is greater than 250 kgmm 2 .

10. The set of iron-type golf clubs of claim 9 , wherein the MOI-Y is greater than 260 kgmm 2 .

11. An iron-type golf club head, comprising:
an upper portion defining an open rear cavity;
a lower muscle portion defining an enclosed cavity; and
at least one weight member disposed in the lower muscle portion,
wherein the golf club head has a blade length (BL) of less than 81 mm, wherein the blade length is a distance measured parallel to a horizontal X-axis that extends in a heel to toe direction between a vertical projection to a ground plane of the most toe-ward location on the golf club head and the intersection of a hosel axis and the ground plane when the golf club head is placed at address,
wherein a moment of inertia about a vertical axis (MOI-y) extending through a center of gravity of the golf club head is at least 240 kgmm 2 ,
wherein a ratio MOI-y/BL is at least 3.2, and
wherein the golf club has a loft less than about 28°.

12. The iron-type golf club of claim 11 , wherein a height above the ground plane of the center of gravity of the golf club head is between about 17.5 mm and about 19.0 mm.

13. The iron-type golf club of claim 12 , wherein the height of the center of gravity above the ground plane is less than 18.3 mm.

14. The iron-type golf club of claim 11 , wherein the golf club head includes a body member and a shell member, wherein the open rear cavity is defined by an upper portion of the body member, and wherein the shell member and a lower portion of the body member combine to define the enclosed cavity.

15. The iron-type golf club of claim 14 , wherein the weight member is constructed at least partially from tungsten and disposed in a toe portion of the lower muscle portion, and wherein the shell member is welded to the body member.

16. The iron-type golf club of claim 11 , wherein the golf club has a loft of about 24°.

17. The iron-type golf club of claim 11 , wherein the ratio MOI-Y/BL is at least 3.3.

18. The iron-type golf club of claim 17 , wherein the ratio MOI-Y/BL is at least 3.4.

19. The iron-type golf club of claim 11 , wherein the MOI-Y is greater than 250 kgmm 2 .

20. The iron-type golf club of claim 19 , wherein the MOI-Y is greater than 260 kgmm 2 .

Assignees

• Acushnet Co

Inventors

• Gilbert Peter J
• Hipp Helene
• Mendoza Eduardo
• Stanescu Adrian L
• Jorgensen Douglas C
• Knutson Scott A

Classifications

• A63B60/54

  with means for damping vibrations · CPC title

• A63B53/0475

  with one or more enclosed cavities · CPC title

• A63B2209/10

  with adhesive type surfaces, i.e. hook and loop-type fastener · CPC title

• A63B53/047 Primary

  iron-type · CPC title

• A63B2053/0433

  Human Necessities · mapped topic