High density alloy for improved mass properties of an article

• US 7,112,148 B2
• Filed: 11/30/2004
• Issued: 09/26/2006
• Est. Priority Date: 07/28/2003
• Status: Active Grant

• Current Assignee: Callaway Golf Company
• Original Assignee: Callaway Golf Company
• Inventors: Deshmukh, Uday V.
• Primary Examiner(s): BLAU, STEPHEN LUTHER
• Application Number:
  US10/904,816
• Publication Number:
  US 20050075190A1
• Time in Patent Office: 665 Days
• Field of Search: 473/324, 473/332, 473/342, 473349-350
• US Class Current: 473/342
• CPC Class Codes: A63B 2209/00 Characteristics of used materials
• CPC Class Codes: A63B 53/04 Heads
• CPC Class Codes: A63B 53/0416 Heads having an impact surface provided by a face insert
• CPC Class Codes: A63B 53/047 iron-type
• CPC Class Codes: A63B 60/00 Details or accessories of golf clubs, bats, rackets or the like
• CPC Class Codes: C22C 19/053 with the maximum Cr content being at least 30% but less than 40%
• CPC Class Codes: C22C 19/055 with the maximum Cr content being at least 20% but less than 30%
• CPC Class Codes: C22C 19/056 with the maximum Cr content being at least 10% but less than 20%
• CPC Class Codes: C22C 19/057 with the maximum Cr content being less 10%

Abstract

The present invention is a nickel-tungsten-chromium alloy for an article of manufacture such as a portion of a golf club head (20). The nickel-tungsten-chromium alloy preferably has a density ranging from 9.0 g/cm³ to 10.5 g/cm³, and a Rockwell Hardness ranging from 50 to 92. The nickel-tungsten-chromium alloy is capable of being investment cast to form the article of manufacture.

Claims

1. A golf club head comprising:

a body having a face plate, a top wall, a sole, a heel end and a toe end, a portion of the body being composed of an investment castable nickel-tungsten-chromium alloy comprising 35 to 70 weight percent nickel, 20 to 35 weight percent tungsten and 10 to 30 weight percent chromium, the nickel-tungsten-chromium alloy having a density in the range of 9.0 g/cm³ to 10.5 g/cm³, and a Rockwell Hardness in the range of 50 to 92, the portion of the body composed of the investment castable nickel-tungsten-chromium alloy having a mass ranging from 100 grams to 240 grams.