Multi-component golf club head

a golf club head and multi-component technology, applied in the field of multi-material, multi-component metal wood golf club head, can solve the problems of increasing the weight of the club head, increasing the thickness of the shell, and enlarging the club head

Inactive Publication Date: 2005-03-17
ACUSHNET CO
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

The weight reduction, due to the use of lower density materials in the second body portion and hosel member, allows for that weight to be relocated in the club head. The present invention provides for a weight member, having a generally horseshoe shape, t

Problems solved by technology

However, enlarging the club head also increases its weight.
Most of the metal wood golf clubs manufactured today have a shell thickness so thin that they border on practical

Method used

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  • Multi-component golf club head
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  • Multi-component golf club head

Examples

Experimental program
Comparison scheme
Effect test

embodiment c

(c) Embodiment C comprises a composite second body portion 32 and a nylon hosel member 33.

Embodiment A of the present invention provides for a shift in the center of gravity C to a position at least 6 mm below the geometric face center X. The actual test results show the center of gravity C to be 7.88 mm below its geometric face center X, while tests for the Titleist®983K (having a titanium crown and skirt) provided data indicating that the 983K's center of gravity was 2.29 mm above its geometric face center. Comparable shifts in the center of gravity C are seen in the test data for embodiments B and C.

The Titleist® 983K has a volume of 363 cubic centimeters, and a titanium SP700 stamped hitting face with a thickness of about 0.122 inch. Unlike the present invention, the 983K does not have a thickness gradient in the hitting face 48 (discussed below). And, while the second body portion 32 of the present invention is formed from magnesium, and the hosel member 33 is formed of nylo...

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PUM

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Abstract

A metal wood golf club head adapted for attachment to a shaft, with a body comprising of a first body portion and a second body portion, each portion constructed of a different density material. Combining a high density material in the first body portion with a low density material in the second body portion, creates an ultra-low center of gravity relative to the geometric face center, resulting in higher launch angles and spin rate ratios. Thickening the lower area of the front face lowers the center of gravity and upwardly shifts the coefficient of restitution to the geometric center of the face

Description

FIELD OF THE INVENTION The present invention relates to a multi-material, multi-component metal wood golf club head. BACKGROUND OF THE INVENTION Golf clubs have achieved a remarkable transformation from persimmon wood clubs to the present day metal woods with their extremely large head sizes. This has been made possible by high strength metallic materials, which allow the golf ball to be hit farther and straighter because of increased club head inertia and coefficient of restitution. Particularly, development of titanium alloys, which are light (specific gravity: 4.5 to 5.0) and strong, have allowed significant increases in the head size and subsequent practical shaft length of a golf club. Specifically, a large moment of inertia, resulting in an increased area of high speed on the club face can be achieved by use of a large club head. Thus there is a constant demand for club heads of greater size. However, enlarging the club head also increases its weight. Most of the metal wood...

Claims

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Application Information

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IPC IPC(8): A63B53/04
CPCA63B53/0466A63B2053/0416A63B2209/00A63B2053/0462A63B2053/0433A63B2053/0408A63B2053/0437A63B2209/02A63B60/00A63B53/0408A63B53/0416A63B53/0437A63B53/0433A63B53/0462
Inventor BURNETT, MICHAEL SCOTTMEYER, JEFFREY W.MURPHY, STEPHEN S.POYNOR, RAYMOND L.SHEAR, DAVID A.
Owner ACUSHNET CO
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