Golf club head with an internal striking plate brace

• US 6,299,547 B1
• Filed: 12/30/1999
• Issued: 10/09/2001
• Est. Priority Date: 12/30/1999
• Status: Expired due to Term

• Current Assignee: Callaway Golf Company (Topgolf Callaway Brands Corp.)
• Original Assignee: Callaway Golf Company (Topgolf Callaway Brands Corp.)
• Inventors: Kosmatka, John B.
• Primary Examiner(s): Passaniti, Sebastiano
• Application Number:
  US09/475,749
• Time in Patent Office: 649 Days
• Field of Search: 473/324, 473/329, 473/332, 473/345, 473/346, 473/349, 473/350, 473/290, 473/291, 473/282, 473/131, 473/342, 473/347, 473/348, 473/288, 473/337
• US Class Current: 473/329
• CPC Class Codes: A63B 53/04 Heads
• CPC Class Codes: A63B 53/0408 characterised by specific dimensions, e.g. thickness
• CPC Class Codes: A63B 53/0416 Heads having an impact surface provided by a face insert
• CPC Class Codes: A63B 53/0433 with special sole configurations
• CPC Class Codes: A63B 53/0437 with special crown configurations
• CPC Class Codes: A63B 53/0466 wood-type
• CPC Class Codes: A63B 53/047 iron-type
• CPC Class Codes: A63B 60/00 Details or accessories of golf clubs, bats, rackets or the like

Abstract

A golf club having a club head with a thin, flexible striking plate for improved energy transfer to a golf ball also has a means for limiting the deflection of the striking plate during high speed impacts with the golf ball. A brace is positioned within the interior of the golf club head a predetermined distance from the striking plate to limit the deflection of the thin, flexible striking plate.

Claims

1. A golf club head comprising:

a body having a hollow interior;

a striking plate having an exterior surface, an interior surface and a thickness in the range of 0.010 inch to 0.250 inch; and

a brace disposed in the hollow interior of the body, the brace being centrally positioned behind the striking plate extending in length from the crown to the sole, having a width less than the width of the striking plate, and disposed at least 0.015 inch from the interior surface of the striking plate wherein the inward deflection of the striking plate is restricted by the brace.

2. The golf club head according to claim 1 wherein the striking plate has a thickness in the range of 0.055 to 0.125 inch.

3. The golf club head according to claim 1 wherein the striking plate has a thickness in the range of 0.0110 to 0.060 inch.

4. The golf club head according to claim 1 wherein the striking plate is composed of a material selected from the group consisting of titanium, titanium alloys, steels, vitreous metals, ceramics, composites, carbon materials, carbon fiber materials, other fibrous materials and mixtures thereof.

5. The golf club head according to claim 1 wherein the brace is composed of a stainless steel material.

6. The golf club head according to claim 1 wherein the brace is disposed at least 0.040 inch from the interior surface of the striking plate.

7. The golf club head according to claim 1 wherein the brace is disposed at least 0.050 inch from the interior surface of the striking plate.

8. The golf club head according to claim 1 wherein the brace is disposed less than 0.060 inch from the interior surface of the striking plate.

9. The golf club head according to claim 1 wherein the club head is selected from the group consisting of woods and irons.

10. The golf club head according to claim 1 wherein the brace is attached to a crown section of the body on one end and a sole section of the body on an opposite end.

11. The golf club head according to claim 1 wherein the brace is mounted and on a rear wall of the body opposite the striking plate.

12. The golf head according to claim 10 wherein the brace is positioned in relation to the center of the striking plate and has a length extending from the crown section to the sole section.

13. The golf head according to claim 11 wherein the brace is positioned in relation to the center of the striking plate and has a length less than the length of the striking plate.

14. A golf club head comprising:

a striking plate having an exterior surface, an interior surface and a thickness in the range of 0.010 inch to 0.250 inch; and

means for imparting a coefficient of restitution less than 0.83 an impact speed greater than 110 mph and imparting a coefficient of restitution greater than 0.83 at an impact speed less than 110 mph said means for imparting a coefficient of restitution being centrally positioned behind the striking plate, extending in length from the crown to the sole, and having a width less than the width of the striking plate.

15. The golf club head according to claim 14 wherein the imparting means is a brace disposed within a body of the golf club head.

16. The golf club head according to claim 15 wherein the brace is disposed at least 0.015 inch from an interior surface of the striking plate wherein the inward deflection of the striking plate is restricted by the brace.

17. The golf club head according to claim 16 wherein the brace is attached to a crown section of the body on one end and a sole section of the body on an opposite end.

18. The golf club head according to claim 16 wherein the brace is mounted and on a rear wall of the body opposite the striking plate.

19. The golf head according to claim 17 wherein the brace is positioned in relation to the center of the striking plate and has a length extending from the crown section to the sole section.

20. The golf head according to claim 18 wherein the brace is positioned in relation to the center of the striking plate and has a length less than the length of the striking plate.

21. The golf club head according to claim 14 wherein the golf club head has a coefficient of restitution of at least 0.87 for the impact speed lower than the first impact speed.