METAL WOOD GOLF CLUB HEAD

• US 20080227564A1
• Filed: 05/22/2008
• Published: 09/18/2008
• Est. Priority Date: 07/13/2005
• Status: Active Grant

• Current Assignee: Cobra Golf Company (Puma SE)
• Original Assignee: Cobra Golf Company (Puma SE)
• Inventors: Breier, Joshua G., Morris, Thomas C., Rice, Scott A., Soracco, Peter L., Chau, Kevin C.
• Granted Patent: US 8,485,920 B2
• Time in Patent Office: Days
• US Class Current: 473/335
• CPC Class Codes: A63B 2053/0491 with added weights, e.g. changeable, replaceable
• CPC Class Codes: A63B 2209/02 with reinforcing fibres, e.g. carbon, polyamide fibres
• CPC Class Codes: A63B 53/0408 characterised by specific dimensions, e.g. thickness
• 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 60/02 Ballast means for adjusting the centre of mass A63B60/24, A63B60/54 take precedence

Abstract

An improved golf club head is disclosed which comprises the positioning of secondary weights at such low, rearward and outward locations that it causes an alteration in the traditional look of the club head wherein each secondary weight has a portion of the weight that bulges outwards of the natural contour of the club head.

Claims

1. A metal wood golf club head adapted for attachment to a shaft comprising:

a substantially hollow club head including a heel portion, a toe portion, a crown portion, a sole plate, and a front face;

a center point on the sole plate defining the lowest point of the club head, the center point being directly below the club head center of gravity when the club head is at a lie of about 59 degrees;

a heel secondary weight and a toe secondary weight, each secondary weight having a center of gravity positioned a predetermined distance from the center point; and

the center of gravities of the heel and toe secondary weights each being at least 0.5 inch rearward of the center point, at least 0.75 inch from the center point towards the heel for the heel secondary weight and towards the toe for the toe secondary weight, and a maximum of 0.25 inch above the center point,

wherein the secondary weights interface with the club head at a generally concave region such that each of the secondary weights bulges outwards of the natural contour of the club head.

2. The golf club head of claim 1, wherein the club head volume is between 350 cc and 460 cc.

3. The golf club head of claim 1, wherein the secondary weights are formed from tungsten or steel or nickel.

4. The golf club head of claim 1, wherein the crown portion is made from a lightweight material selected from the group consisting of carbon fiber composite, polypropylene, or magnesium.

5. A metal wood golf club head adapted for attachment to a shaft comprising:

a substantially hollow club head including a heel portion, a toe portion, a crown portion, a sole plate, and a front face;

a center point on the sole plate defining the lowest point of the club head, the center point being directly below the club head center of gravity when the club head is at a lie of about 59 degrees;

an intersection point perpendicular to the midpoint of a rear surface of the front face at a distance from the front face determined by the distance between the intersection of the hosel centerline with the sole plate of the club head;

a pair of secondary weights, a heel secondary weight and a toe secondary weight, each secondary weight having a center of gravity positioned a predetermined distance from the intersection point; and

the center of gravity of the heel weight and toe weight each being at least 1.5 inches rearward of the intersection point, each being at least 0.75 inch from the intersection point in a direction towards the heel portion for the heel secondary weight and towards the toe portion for the toe secondary weight, and each weight a maximum of 0.25 inch above the center point on the sole plate, wherein the secondary weights interface with the club head at a generally concave region such that each of the secondary weights bulges outwards of the natural contour of the club head.

6. The golf club head of claim 5, wherein the club head volume is between 350 cc and 460 cc.

7. The golf club head of claim 5, wherein the secondary weights are formed from tungsten or nickel or steel.

8. The golf club head of claim 5, wherein the crown portion is made from a lightweight material selected from the group consisting of carbon fiber composite, polypropylene, or magnesium.

9. A metal wood golf club head adapted for attachment to a shaft comprising:

a substantially hollow club head including a heel portion, a toe portion, a crown portion, a sole plate, and a front face;

a center point on the sole plate defining the lowest point of the club head, the center point being directly below the club head center of gravity when the club head is at a lie of about 59 degrees; and

a plurality of secondary weights, each secondary weight having a center of gravity positioned at least 0.9 inch from the center point,

wherein the secondary weights interface with the club head at a generally concave region such that each of the secondary weights bulges outwards of the natural contour of the club head.

10. The golf club head of claim 9, wherein the club head volume is between 350 cc and 460 cc.

11. The golf club head of claim 9, wherein the secondary weights are formed from tungsten or steel or nickel.

12. The golf club head of claim 9, wherein the crown portion is made from a lightweight material selected from the group consisting of carbon fiber composite, polypropylene, or magnesium.