Golf club head with tungsten alloy sole applications

• US 7,717,807 B2
• Filed: 09/02/2008
• Issued: 05/18/2010
• Est. Priority Date: 09/06/2007
• Status: Active Grant

• Current Assignee: Callaway Golf Company (Topgolf Callaway Brands Corp.)
• Original Assignee: Callaway Golf Company (Topgolf Callaway Brands Corp.)
• Inventors: Evans, D. Clayton, Tang, Larry G.
• Primary Examiner(s): Hunter; Alvin A
• Application Number:
  US12/202,538
• Publication Number:
  US 20090082135A1
• Time in Patent Office: 623 Days
• Field of Search: 473324-350
• US Class Current: 473/345
• 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 53/0433 with special sole configurations
• CPC Class Codes: A63B 53/0466 wood-type

Abstract

A wood-type golf club head (20) with a main body (22) and a minor body (24) is disclosed herein. The main body (26) has a front portion (30), a crown portion (25), a partial toe portion (27), a partial heel portion (26), a partial rear portion (28) and a partial sole portion (29). The minor body (24) preferably has a sole wall (31), a partial toe wall (33), a partial heel wall (32) and a partial rear wall (34). The minor body (24) is preferably welded to the main body (22). The minor body (24) preferably has a mass ranging from 80 grams to 110 grams. The minor body (24) is preferably from 50 weight percent to 35 weight percent of the total mass of the wood-type golf club head (20).

Claims

1. A wood-type golf club head comprising:

a main body comprising a front portion, a crown portion, a partial toe portion, a partial heel portion, a partial rear portion and a partial sole portion, the main body composed of a stainless steel material, the main body having a mass ranging from 100 grams to 150 grams, the main body having a volume of 16.0 cubic centimeters, the front portion having a thickness ranging from 0.050 inch to 0.125 inch, the partial heel portion, the partial rear portion and the partial sole portion having a thickness ranging from 0.020 inch to 0.050 inch; and

a minor body attached to the main body, the minor body comprising a sole wall, a partial toe wall, a partial heel wall and a partial rear wall, wherein the partial toe wall is welded to the partial toe portion, the partial heel wall is welded to the partial heel portion, the partial rear wall is welded to the partial rear portion, and the sole wall is welded to the partial sole portion, the minor body composed of a tungsten alloy material, the tungsten alloy material comprising stainless steel and tungsten, the minor body having a mass ranging from 80 grams to 100 grams;

wherein the golf club head has a mass ranging from 200 grams to 250 grams and

wherein a moment of inertia, I_yy, a bout a Y axis of a center of gravity of the golf club head ranges from 900 g-cm² to 1700 g-cm².

2. The wood-type golf club head according to claim 1 wherein the tungsten alloy material further comprises nickel.

3. The wood-type golf club head according to claim 1 wherein the partial toe portion and the partial heel portion each has a length less than 25% of the length, L, of the golf club head.

4. The wood-type golf club head according to claim 1 wherein the minor body has a thickness ranging from 0.020 inch to 0.080 inch.

5. The wood-type golf club head according to claim 1 wherein the minor body has a material volume ranging from 6.0 cubic centimeters to 12.0 cubic centimeters.

6. A wood-type club head comprising:

a main body comprising a front portion, a crown portion, a partial toe portion, a partial heel portion, a partial rear portion and a partial sole portion, the main body composed of a stainless steel material, the main body having a mass of 116 grams, the main body having a volume of 16.0 cubic centimeters, the front portion having a thickness ranging from 0.050 inch t 0.125 inch, the partial heel portion, the partial rear portion and the partial sole portion having a thickness ranging from 0.020 inch to 0.050 inch; and

a minor body attached to the main body, the minor body comprising a sole wall, a partial toe wall, a partial heel wall and a partial rear wall, wherein the partial toe wall is welded to the partial toe portion, the partial heel wall is welded to the partial heel portion, the partial rear wall is welded to the partial rear portion, and the sole wall is welded to the partial sole portion, the minor body composed of a tungsten alloy material, the tungsten alloy material comprising stainless steel and tungsten, the minor body having a mass of 92 grams;

wherein the golf club head has a mass of 211 grams wherein a moment of inertia, I_yy, about a Y axis of a center of gravity of the golf club head ranges from 900 g-cm² to 1700 g-cm².