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Metal wood club

a golf club and metal wood technology, applied in the field of golf club heads, can solve the problems of inability to meet the needs of golf clubs, the face of golf clubs has been steadily becoming extremely thin, and the golf equipment manufacturer cannot control the environmental effects, so as to increase the launch angle of the golf ball, increase the carry distance of the ball, and increase the speed of the golf ball rebounds

Inactive Publication Date: 2007-03-01
ACUSHNET CO
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

[0015] The slot may increase the carry distance of a ball hit with the club head as compared with a club head without a slot. The slot may increase the speed at which a golf ball rebounds from the face insert of the club head as compared with a club head without a slot. In one embodiment, the speed at which a golf ball rebounds from the face insert of the club head is increased at least 0.5 mph as compared with a club head without a slot. The slot may increase the launch angle of a golf ball leaving the face insert after impact with the club head as compared with a club head without a slot. In one embodiment, the launch angle of a golf ball leaving the face insert is increased by at least 0.5 degrees as compared with a club head without a slot. The slot may decrease the back spin of a golf ball leaving the face insert after impact with the club head as compared with a club head without a slot. In one embodiment, the slot decreases back spin by at least 100 rpm as compared with a club head without a slot.

Problems solved by technology

Thus, a major challenge is designing the club face and body to resist permanent deformation or failure by material yield or fracture.
However, these environmental effects are beyond the control of the golf equipment manufacturer.
Also, the faces of clubs have been steadily becoming extremely thin.
The thinner faces are more vulnerable to failure.

Method used

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Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0035] COR or coefficient of restitution is a measure of collision efficiency. COR is the ratio of the velocity of separation to the velocity of approach. In this model, therefore, COR was determined using the following formula:

(vclub-post−vball-post) / (vball-pre−vclub-pre)

where, vclub-post represents the velocity of the club after impact; [0036] vball-post represents the velocity of the ball after impact; [0037] vclub-pre represents the velocity of the club before impact (a value of zero for USGA COR conditions); and [0038] vball-pre represents the velocity of the ball before impact.

[0039] COR, in general, depends on the shape and material properties of the colliding bodies. A perfectly elastic impact has a COR of one (1.0), indicating that no energy is lost, while a perfectly inelastic or perfectly plastic impact has a COR of zero (0.0), indicating that the colliding bodies did not separate after impact resulting in a maximum loss of energy. Consequently, high COR values are in...

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PUM

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Abstract

A golf club head is provided having a body and a face insert, with a slot in a perimeter region of the body of the club head adjacent the face insert. The slot increases the flex of the hitting surface on impact with a golf ball, thereby increasing the speed with which the ball rebounds off the hitting face and increases the overall distance the ball is hit. The slot preferably moves the sweet spot of the hitting face a distance X from the face center of the hitting face. The slot may be filled with an elastomeric material.

Description

FIELD OF THE INVENTION [0001] The present invention relates to an improved golf club head. More particularly, the present invention relates to a golf club head having a through-slot provided in a perimeter region of a body of the club head adjacent the face insert to improve the flex of the face of the club head. BACKGROUND [0002] The complexities of golf club design are well known. The specifications for each component of the club (i.e., the club head, shaft, grip, and subcomponents thereof) directly impact the performance of the club. Thus, by varying the design specifications, a golf club can be tailored to have specific performance characteristics. [0003] The design of club heads has long been studied. Among the more prominent considerations in club head design are loft, lie, face angle, horizontal face bulge, vertical face roll, center of gravity, inertia, material selection, and overall head weight. While this basic set of criteria is generally the focus of golf club engineeri...

Claims

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Application Information

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IPC IPC(8): A63B53/00
CPCA63B49/06A63B53/0466A63B53/047A63B2053/0458A63B2053/0412A63B2053/0416A63B2053/0433A63B2053/0408A63B60/00A63B60/52A63B53/0408A63B53/0412A63B53/0416A63B53/0433A63B53/0458
Inventor SHEAR, DAVID A.
Owner ACUSHNET CO
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