Selectively lightened wood-type golf club head

• US 8,172,697 B2
• Filed: 08/16/2010
• Issued: 05/08/2012
• Est. Priority Date: 08/17/2009
• Status: Active Grant

• Current Assignee: Callaway Golf Company (Topgolf Callaway Brands Corp.)
• Original Assignee: Callaway Golf Company (Topgolf Callaway Brands Corp.)
• Inventors: Cackett, Matthew T., Vincent, Brandon T., Hocknell, Alan, Colton, Jeff
• Primary Examiner(s): Passaniti, Sebastiano
• Application Number:
  US12/857,344
• Publication Number:
  US 20110039636A1
• Time in Patent Office: 631 Days
• Field of Search: 473324-350, 473287-292
• US Class Current: 473/329
• CPC Class Codes: A63B 2209/00 Characteristics of used materials
• 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 53/0466 wood-type
• CPC Class Codes: A63B 60/52 with slits
• CPC Class Codes: Y10T 29/49826 Assembling or joining
• CPC Class Codes: Y10T 29/49995 Shaping one-piece blank by removing material

Abstract

A wood type golf club head having a plurality of interior recesses is disclosed herein. The plurality of interior recesses are preferably formed in a body of the golf club head and remove mass from the body to be used elsewhere on the golf club head to increase the inertial properties of the golf club head.

Claims

1. A golf club head comprising:

a major body composed of a metal material, the major body having a front wall section, a return section, a sole section, a ribbon section and a ledge section, the front wall section having an opening, the major body having a mass ranging from 140 grams to 200 grams;

a striking plate insert positioned in the opening of the front wall section of the major body, the striking plate insert having a thickness in the range of 0.010 inch to 0.250 inch;

a minor body having a crown section and a ribbon section, the minor body attached to the ledge section of the major body, the minor body having a mass ranging from 4 grams to 50 grams;

wherein the major body and the minor body each has a plurality of interior recesses;

said plurality of recesses being uniformly dispersed over substantially the entire interior surface of each of the major body and the minor body.

2. The golf club head according to claim 1 wherein each of said plurality of interior recesses has a diameter ranging from 0.030 inch to 10 microns.

3. The golf club head according to claim 1 wherein each of said plurality of interior recesses has a depth of 50% to 90% of the thickness of the major body and the minor body.

4. The golf club head according to claim 1 wherein a moment of inertia about the Izz axis through the center of gravity of the golf club head ranges from 2800 grams-centimeters squared to 5000 grams-centimeters squared.