Golf club head

• US 6,942,581 B2
• Filed: 06/05/2003
• Issued: 09/13/2005
• Est. Priority Date: 06/05/2003
• Status: Expired due to Fees

• Current Assignee: Richard S.J. Kim, Tae-Joon Kim
• Original Assignee: Richard S.J. Kim, Tae-Joon Kim
• Inventors: Kim, Tae-Joon, Kim, Richard S. J.
• Primary Examiner(s): Passaniti, Sebastiano
• Application Number:
  US10/454,546
• Publication Number:
  US 20040248666A1
• Time in Patent Office: 831 Days
• Field of Search: 473/324, 473/349, 473/327, 473/350, 473/328, 473/345, 473/346
• US Class Current: 473/345
• 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 60/52 with slits

Abstract

A golf club head composed of a one-piece body having a front side, a rear side, a top and a bottom, and provided with a groove that extends from the rear side to locally reduce the cross-section of the body and to form the body into a heel sub-head adjacent a hosel and a toe sub-heads remote from the hosel, the sub-heads meeting at a joint plane in the body, the joint plane extending from the base of the groove to the front side.

Claims

1. A golf club head comprising:

a one-piece body having a front side, a rear side, a top and a bottom, wherein said one-piece body is provided with a groove that extends from said rear side to locally reduce the cross-section of said body and to form said body into a heel sub-head adjacent a hosel and a toe sub-head remote from the hosel, the sub-heads meeting at a joint plane in said body, which joint plane extends from the base of said groove to said front side, and further wherein said golf club head has a center of gravity and said toe sub-head is dimensioned such that a line passing through the center of gravity and perpendicular to said front side intersects said toe sub-head.

2. The club head of claim 1 wherein each of said front and rear sides is composed of a heel sub-head part and a toe sub-head part, and said heel and toe sub-head parts of said front sides are substantially coplanar.

3. The club head of claim 2 wherein said heel and toe sub-head parts are each essentially convex at said rear side.

4. The club head of claim 3 wherein said convex heel and toe sub-head parts at said rear side are each defined by a circular arc in at least one plane.

5. The club head of claim 3 wherein said convex heel and toe sub-head parts at said rear surface are each defined by circular arcs in two mutually perpendicular planes.

6. The club head of claim 3 wherein said body is made of wood.

7. The club head of claim 1 wherein the base of said groove has outline that is convex in a direction away from said front side.

8. The club head of claim 1 wherein said body is made of metal.

9. The club head of claim 1 wherein said toe sub-head contains at least 60% of the mass of said golf club head.

10. The golf club head of claim 1 wherein club head has a height dimension between said top and bottom and said groove locally reduces the height dimension of said club between said heel and toe sub-heads.

11. A golf club head comprising:

a one-piece body having a front side, a rear side, a top and a bottom, wherein said one-piece body is provided with a groove that extends from said rear side to locally reduce the cross-section of said body and to form said body into a heel sub-head adjacent a hosel and a toe sub-head remote from the hosel, the sub-heads meeting at a joint plane in said body, which joint plane extends from the base of said groove to said front side, and further wherein said toe sub-head contains at least 60% of the mass of said golf club head.

12. The golf club head of claim 11 wherein said club head has a height dimension between said top and bottom and said groove locally reduces the height dimension of said club between said heel and toe sub-heads.