GOLF CLUB HEAD

• US 20090156326A1
• Filed: 02/23/2009
• Published: 06/18/2009
• Est. Priority Date: 01/03/2005
• Status: Active Grant

• Current Assignee: Callaway Golf Company
• Original Assignee: Callaway Golf Company
• Inventors: STEVENS, DANIEL M., TANG, LARRY G., GIBBS, EVAN D., CACKETT, MATTHEW T., HOCKNELL, ALAN, WILLIAMS, LUKE R., HALLACK, MICHAEL, HETTINGER, RONALD K.
• Granted Patent: US 7,588,501 B2
• Time in Patent Office: Days
• US Class Current: 473/329
• CPC Class Codes: A63B 2053/0491 with added weights, e.g. changeable, replaceable
• CPC Class Codes: A63B 2209/00 Characteristics of used materials
• CPC Class Codes: A63B 2209/02 with reinforcing fibres, e.g. carbon, polyamide fibres
• CPC Class Codes: A63B 2209/023 Long, oriented fibres, e.g. wound filaments, woven fabrics, mats
• CPC Class Codes: A63B 53/02 Joint structures between the head and the shaft
• CPC Class Codes: A63B 53/0408 characterised by specific dimensions, e.g. thickness
• CPC Class Codes: A63B 53/0412 Volume
• CPC Class Codes: A63B 53/0416 Heads having an impact surface provided by a face insert
• CPC Class Codes: A63B 53/042 the face insert consisting of a material different from that of the head
• CPC Class Codes: A63B 53/0433 with special sole configurations
• CPC Class Codes: A63B 53/0437 with special crown configurations
• CPC Class Codes: A63B 53/0458 with non-uniform thickness of the impact face plate
• CPC Class Codes: A63B 53/0462 characterised by tapering thickness of the impact face plate
• CPC Class Codes: A63B 53/0466 wood-type
• CPC Class Codes: A63B 60/00 Details or accessories of golf clubs, bats, rackets or the like
• CPC Class Codes: A63B 60/02 Ballast means for adjusting the centre of mass A63B60/24, A63B60/54 take precedence

Abstract

A golf club head (42) having a substantially square or rectangular body is disclosed herein. The golf club head (42) preferably has a volume ranging from 420 cubic centimeters to 470 cubic centimeters. The golf club head (42) preferably has a moment of inertia about the Izz axis through the center of gravity of the golf club head greater than 4000 grams-centimeters squared, and a moment of inertia about the Ixx axis through the center of gravity of the golf club head greater than 3000 grams-centimeters squared.

Claims

1. A wood-type golf club head comprising:

a body composed of a titanium alloy material, the body comprising a crown, a sole and a front wall having a perimeter, a body extending 2.0 inches to 5.0 inches rearward from the perimeter of the front wall, wherein the crown, the sole, the front wall, define a hollow interior;

wherein the wood-type golf club head has a volume ranging from 420 cubic centimeters to 470 cubic centimeters, a moment of inertia, Izz, about the center of gravity of the golf club head greater than 4000 grams-centimeters squared, and a moment of inertia, Iyy, about the center of gravity of the golf club head ranging from 2000 grams-centimeters squared to 4000 grams-centimeters squared;

wherein the wood-type golf club head has coefficient of restitution ranging from 0.81 to 0.94;

wherein the body is substantially rectangular;

wherein the body extends rearward from a perimeter of the front wall a distance of least 50% of the length of the body at an angle of 80 degrees to 90 degrees relative to relative to a plane parallel to the farthest extent of the front wall.

2. The wood-type golf club head according to claim 1 wherein the body has a geometric center point, an aft-heel edge point and an aft-toe edge point, wherein the distance from the geometric center point to the aft-heel edge point is equal to the distance from the geometric center point to the aft-toe edge point.

3. The wood-type golf club head according to claim 2 further comprising an aft-heel curvature section between the aft wall and the heel wall, and an aft-toe curvature section between the aft wall and the toe wall.

4. The wood-type golf club head according to claim 1 wherein the body extends rearward from a perimeter of the front wall a distance of least 75% of the length of the body at an angle of 80 degrees to 90 degrees relative to a plane parallel to the farthest extent of the front wall.

5. The wood-type golf club head according to claim 1 wherein the body extends rearward from a perimeter of the front wall a distance of least 90% of the length of the body at an angle of 80 degrees to 90 degrees relative to a plane parallel to the farthest extent of the front wall.