Golf Clubs With Golf Club Heads Having Grooves

• US 20140274451A1
• Filed: 03/15/2013
• Published: 09/18/2014
• Est. Priority Date: 03/15/2013
• Status: Abandoned Application

• Current Assignee: Nike, Inc.
• Original Assignee: Nike, Inc.
• Inventors: Knight, William C., Taylor, Michael G., Thomas, James S., Savage, Christopher R.
• Application Number:
  US13/832,993
• Publication Number:
  US 20140274451A1
• Time in Patent Office: Days
• US Class Current: 473/331
• CPC Class Codes: A63B 53/04 Heads
• CPC Class Codes: A63B 53/0408 characterised by specific dimensions, e.g. thickness
• CPC Class Codes: A63B 53/0445 Details of grooves or the like on the impact surface
• CPC Class Codes: A63B 60/46 Measurement devices associated with golf clubs, bats, rackets or the like for measuring physical parameters relating to sporting activity, e.g. baseball bats with impact indicators or bracelets for measuring the golf swing

Abstract

A golf club with a golf club head having a plurality of grooves formed in a ball striking surface of the golf club head wherein the side walls of each groove slope inwardly from the striking face toward a bottom of the groove at an angle of 25.5 to 27.5 degrees from an axis of symmetry extending perpendicular from the striking face.

Claims

1. A golf club head comprising a substantially flat striking face and a plurality of grooves formed therein,

wherein at least one of said grooves comprises:

side walls wherein each side wall slopes inwardly from the striking face toward a bottom of the groove at an angle of 25.5 to 28.5 degrees from an axis of symmetry extending perpendicular from the striking face;

a depth extending perpendicular from the striking face to the bottom of the groove of 0.013 to 0.018 inch; and

wherein spacing between adjacent groove edges is 0.085 to 0.098 inches.

2. The golf club head of claim 1 wherein the angle is 26.5 to 27.5.

3. The golf club head of claim 1 wherein the depth is 0.015 inches to 0.017 inches.

4. The golf club head of claim 1 wherein the spacing is 0.090 to 0.095 inches.

5. The golf club head of claim 1 wherein the area of each of said grooves divided by groove pitch is 0.0018 to 0.0030 in²/in.

6. The golf club head of claim 1 wherein the area of each of said grooves divided by groove pitch is 0.0023 to 0.0030 in²/in.

7. The golf club head of claim 1 wherein a groove area (A) is 0.00028 to 0.00036 in².

8. The golf club head of claim 1 wherein the grooves comply with the USGA Rules of Golf dated 2011-2012.

9. A golf club head comprising a substantially flat striking face and a plurality of grooves formed therein,

wherein at least one of said grooves comprises:

side walls wherein each side wall slopes inwardly from the striking face toward a bottom of the groove at an angle of 25.5 to 28.5 from an axis of symmetry extending perpendicular from the striking face;

a depth extending perpendicular from the striking face to the bottom of the groove of 0.013 to 0.018 inch; and

a width at the top of the groove of 0.025 to 0.030 inches.

10. The golf club head of claim 9 wherein the angle is 26.5 to 27.5.

11. The golf club head of claim 9 wherein the depth is 0.015 inches to 0.017 inches.

12. The golf club head of claim 9 wherein the area of each of said grooves divided by groove pitch is 0.0018 to 0.0030 in²/in.

13. The golf club head of claim 9 wherein the area of each of said grooves divided by groove pitch is 0.0023 to 0.0030 in²/in.

14. The golf club of claim 9 wherein a groove area (A) is 0.00028 to 0.00036 in²

15. The golf club head of claim 9 wherein the grooves comply with the USGA Rules of Golf dated 2011-2012.

16. A golf club head comprising a substantially flat striking face and a plurality of grooves formed therein,

wherein at least one of said grooves comprises:

side walls wherein each side wall slopes inwardly from the striking face toward a bottom of the groove at an angle of 25.5 to 28.5 from an axis of symmetry extending perpendicular from the striking face; and

a width at the top of the groove of 0.025 to 0.030 inches;

wherein spacing between adjacent grooves is 0.085 to 0.098 inches.

17. The golf club head of claim 16 wherein the angle is 26.5 to 27.5.

18. The golf club head of claim 16 wherein the spacing is 0.090 to 0.095 inches.

19. The golf club head of claim 16 wherein the area of each of said grooves divided by groove pitch is 0.0018 to 0.0030 in²/in.

20. The golf club head of claim 16 wherein the area of each of said grooves divided by groove pitch is 0.0023 to 0.0030 in²/in.

21. The golf club of claim 16 wherein a groove area (A) is 0.00028 to 0.00036 in²

22. The golf club head of claim 16 wherein the grooves comply with the USGA Rules of Golf dated 2011-2012.

23. A golf club head comprising a substantially flat striking face and a plurality of grooves formed therein,

wherein at least one of said grooves comprises:

side walls wherein each side wall slopes inwardly from the striking face toward a bottom of the groove at an angle of 25.5 to 28.5 degrees from an axis of symmetry extending perpendicular from the striking face;

a depth extending perpendicular from the striking face to the bottom of the groove of 0.013 to 0.018 inch;

a groove width extending across the top of the groove of 0.025 to 0.030 inch;

a groove area is 0.00028 to 0.00036 in²;

wherein the area of each of said grooves divided by groove pitch is 0.0018 to 0.0030 in²/in;

wherein spacing (S) between adjacent grooves is 0.085 to 0.095 inches; and

the loft angle of the club head is 44°

to 70°

.