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Golf Club Head and Method of Making Same

a golf club and head technology, applied in the field of golf club heads, can solve the problems of lack of durability, lack of scratching and denting resistance, and lack of durability of the harder stainless steel golf club alloys

Inactive Publication Date: 2009-04-30
CRS HLDG INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, all of these soft alloys have the disadvantage of being so soft that they lack the durability of the harder stainless steel golf club alloys.
This lack of durability can be seen in a lack of resistance to scratching and denting, as well as easier movement of the loft and lie angles during normal play.

Method used

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Examples

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Embodiment Construction

[0010]An austenitic stainless steel alloy sold under the registered trademark “15-15LC” was designed for and has been used exclusively for making components for the oil-drilling industry, primarily drill collars. Alloys sold under the mark “15-15LC” are described and claimed in U.S. Pat. No. 3,904,401 and U.S. Pat. No. 5,308,877, both of which are incorporated herein by reference.

[0011]The inventors have discovered that the 15-15LC alloy has properties that also make it highly suitable for iron golf club heads. The term “iron” as used herein, refers to the golf clubs known as irons, as opposed to other types of golf clubs referred to as woods and putters. As used herein the term “iron golf club” includes golf clubs known as wedges.

[0012]The golf club head according to the present invention departs from the state of the art in iron golf clubs because it is made from an austenitic stainless steel alloy having the following weight percent composition: up to about 0.25% max. carbon; abo...

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Abstract

A golf club head is described which has a body that is formed at least in part from a stainless steel alloy having the following composition in weight percent:Carbon0.25 max.Manganese14-20Siliconup to 2.0Phosphorus0.05 max.Sulfur 0.5 max.Chromium12-22Nickel 3.5 max.Molybdenum0.5-4  Copper 2.0 max.Nitrogen0.2-0.8Boron0.06 max.The balance of the alloy is iron and the usual impurities. The stainless steel alloy provides a hardness of about 80 HRB up to about 25 HRC. The golf club head provides a unique combination of high strength and hardness, good ductility, excellent “feel”, and good durability. A method of making the disclosed golf club head is also described.

Description

FIELD OF THE INVENTION[0001]This invention relates to golf club heads and in particular to an iron golf club head made from a corrosion resistant steel alloy that provides a unique combination of strength, ductility, and feel.BACKGROUND OF THE INVENTION[0002]Golf club manufacturers are continuously on the lookout for new golf club materials which provide better “feel” than materials currently in use. That property is especially desirable in irons and high-lofted clubs such as wedges. It is believed that a major component of the “feel” characteristic of a golf club is the sound and vibration damping characteristics of the metal from which the club head is manufactured. The overall shape and design of the club head also contribute to its feel characteristic.[0003]Another important property for an alloy used in a golf club head is resistance to corrosion. In this regard, steel alloys containing relatively high amounts of chromium and / or molybdenum have been favored. Among the currently...

Claims

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Application Information

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IPC IPC(8): A63B53/04
CPCA63B53/04A63B53/047Y10T29/49989A63B2053/0416A63B2209/00A63B59/0092A63B60/54A63B53/0416A63B60/00
Inventor TAYLOR, LAWRENCE P.THOMPSON, PETER T.
Owner CRS HLDG INC