Golf club head

Patent metadata

Field	Value
Publication number	US-10561909-B2
Application number	US-201816037547-A
Country	US
Kind code	B2
Filing date	Jul 17, 2018
Priority date	Sep 30, 2016
Publication date	Feb 18, 2020
Grant date	Feb 18, 2020

Abstract

A golf club head includes a striking face having a face center and a virtual striking face plane generally parallel to the striking face. The golf club head further includes a sole portion, a top portion, a rear portion, and a loft L no less than 40°. A virtual vertical plane perpendicular to the striking face plane passes through the face center. A club head center of gravity is spaced from the virtual vertical plane in the heel-to-toe direction by a distance D1 that is no greater than 6.0 mm. The golf club head further includes a hosel including an internal bore configured to receive a golf shaft. The internal bore includes a peripheral side wall and a shaft abutment surface configured to abut a tip end of the golf club shaft. The hosel further comprises an auxiliary recess extending sole-ward from the abutment surface of the internal bore.

First claim

We claim:

1. A golf club head that, when oriented in a reference position, comprises:
a striking face having a face center, a leading edge, and a virtual striking face plane generally parallel to the striking face;
a sole portion;
a top portion;
a rear portion;
a loft L no less than 40°;
a virtual vertical plane perpendicular to the striking face plane and passing through the face center;
a club head center of gravity spaced from the virtual vertical plane in a heel-to-toe direction by a distance D 1 that is no greater than 6.0 mm; and
a hosel comprising a virtual hosel axis and an internal bore configured to receive a golf club shaft, the internal bore including a peripheral side wall and a shaft abutment surface configured to abut a tip end of the golf club shaft, the hosel further comprising an auxiliary recess extending sole-ward from the abutment surface of the internal bore,
wherein the club head comprises a blade-type golf club head comprising an upper blade portion having a substantially uniform thickness and a lower muscle portion,
wherein the upper blade portion comprises a maximum thickness D 5 no greater than 7 mm, and
wherein the center of gravity is vertically spaced from a point P 1 located at an intersection of the leading edge and the virtual vertical plane by a distance D 3 that is no greater than 17 mm.

2. The golf club head of claim 1 , further comprising a sole width D 8 that is between 14 mm and 20 mm.

3. The golf club head of claim 1 , wherein the auxiliary recess comprises a depth, measured in a direction of the hosel axis, of no less than 5 mm.

4. The golf club head of claim 1 , wherein the distance D 1 is no greater than 5.5 mm.

5. The golf club head of claim 4 , wherein the distance D 1 is no greater than 5.0 mm.

6. The golf club head of claim 1 , wherein the center of gravity is spaced from the striking face plane by a minimum distance D 2 no greater than 2.0 mm.

7. The golf club head of claim 1 , wherein the distance D 3 is such that: D 3 ≥29.5 mm−(0.3 mm/°)×L.

8. The golf club head of claim 7 , wherein: D 3 ≥29.8 mm−(0.3 mm/°)×L.

9. The golf club head of claim 1 , wherein the auxiliary recess is at least partially filled.

10. The golf club head of claim 1 , wherein the auxiliary recess tapers in width in a sole-ward direction.

11. The golf club head of claim 1 , wherein:
the hosel has a hosel upper end; and
a distance D 4 , measured from the hosel upper end to a virtual ground plane along the virtual hosel axis, is no greater than 75 mm.

12. The golf club head of claim 1 , further comprising a maximum top line thickness D 5 no greater than 5.70 mm.

13. A golf club head that, when oriented in a reference position, comprises:
a sole portion;
a top portion;
a heel portion;
a toe portion;
a striking face having a face center, a leading edge, a virtual striking face plane generally parallel to the striking face, and a plurality of scorelines having a heel-most extent and a toe-most extent;
a hosel portion having an internal bore configured to receive a golf club shaft;
a first virtual vertical plane perpendicular to the striking face plane and passing through the heel-most extent of the plurality of scorelines;
a heel-most region defined as the entire portion of the club head located heelward of the first virtual vertical plane;
a recessed region delimiting a volume such that the majority of the volume is located in the heel-most region;
a loft L no less than 40°;
a second virtual vertical plane perpendicular to the striking face plane and passing through the face center; and
a club head center of gravity spaced from the second virtual vertical plane in a heel-to-toe direction by a distance D 1 that is no greater than 6.0 mm,
wherein the club head comprises a blade-type golf club head comprising an upper blade portion having a substantially uniform thickness and a lower muscle portion,
wherein the upper blade portion comprises a maximum thickness D 5 no greater than 7 mm, and
wherein the center of gravity is vertically spaced from a point P 1 located at an intersection of the leading edge and the second virtual vertical plane by a distance D 3 that is no greater than 17 mm.

14. The golf club head of claim 13 , wherein the recessed region, in its entirety, is located heelward of the first virtual vertical plane.

15. The golf club head of claim 13 , wherein the recessed region is in communication with the internal bore of the hosel portion.

16. The golf club head of claim 13 , wherein the recessed region comprises a depth of no less than 5 mm.

17. The golf club head of claim 13 , wherein the recessed region is at least partially filled.

18. The golf club head of claim 13 , further comprising a sole width D 8 that is between 14 mm and 20 mm.

19. The golf club head of claim 13 , wherein the distance D 1 is no greater than 5.5 mm.

20. The golf club head of claim 19 , wherein the distance D 1 is no greater than 5.0 mm.

21. The golf club head of claim 13 , wherein the center of gravity is spaced from the striking face plane by a minimum distance D 2 no greater than 2.0 mm.

22. The golf club head of claim 13 , wherein the distance D 3 is such that: D 3 ≥29.5 mm−(0.3 mm/°)×L.

23. The golf club head of claim 22 , wherein: D 3 ≥29.8 mm−(0.3 mm/°)×L.

24. The golf club head of claim 13 , further comprising a maximum top line thickness D 5 no greater than 5.70 mm.

Assignees

• Dunlop Sports Co Ltd
• Sumitomo Rubber Ind

Inventors

• Ripp Patrick
• Herr Brian
• Becktor Mika
• Dolezel Keith

Classifications

• A63B53/02

  Joint structures between the head and the shaft · CPC title

• A63B53/047 Primary

  iron-type · CPC title

• A63B53/04

  Heads · CPC title

• A63B60/00

  Details or accessories of golf clubs, bats, rackets or the like · CPC title

• A63B2053/0445

  Human Necessities · mapped topic