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Golf club head with twisted face angle

a golf club and angle technology, applied in the field of golf club head angle, can solve problems such as the ball bending back toward the side, and achieve the effect of reducing the curv

Inactive Publication Date: 2007-11-29
ACUSHNET CO
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

[0012]The present invention is directed to a golf club head having a face angle that is twisted from high to low such that the face angle high on the face is open relative to the face angle at the center, and the face angle low on the face is closed relative to the face angle at the center. This twist eliminates the left / right dispersion produced when hitting the ball high or low on a normal clubface.
[0016]The present invention also achieves both simplicity and accuracy in the disclosed method. Unlike more complex methods, the present invention utilizes only a few key variables out of the many available to match a player to a particular club.

Problems solved by technology

However, the counterclockwise or hook spin imparted to the ball by the gear effect will cause the ball to curve back toward the intended line of flight.

Method used

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Examples

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Effect test

example 1

[0030]Consider a high handicap player (i.e., 12-18) with a measured club head speed of 85 miles per hour, which would characterize the golfer under the present invention as having a medium swing speed. When such a golfer is equipped with a Titleist® 905R driver, having about a 11.5° loft and a R or S stiff flex shaft, preferably an R flex, to obtain optimum driving performance, the twist angles ø and β designed by the present invention for the tangents at TB and TC respectively are 0.1° open for TB and 0.3° closed for TC.

example 2

[0031]Now consider a low handicap player (i.e. 0-5) having a swing speed of 110 to 115 mph, which would be a professional speed. For this level player, the Titleist® 905R driver would preferably have a loft no higher than 9.5° and the shaft would preferably be of a stiff flex. For this golfer the twist angles ø and β for the tangents at TB and TC respectively are 0.3° open for TB and 0.5° closed for TC.

[0032]Swing speeds between those stated in the above examples would be basically extrapolated on a linear basis. The main concept is to have twist angles that match the player's club speed for every golf club driver.

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Abstract

The present invention is directed towards a golf club head having integrally incorporated twisted face angles which are selected to match a particular golfer's swing speed. The twisted profile front face is defined by a first horizontal plane through the center of the face and having a first tangent at an intersection between the first horizontal plane and a center vertical plane and a second horizontal plane located between the first horizontal plane and a top line, wherein the second horizontal plane has a second tangent at an intersection between the second horizontal plane and the center vertical plane that is an angle to the first tangent. The invention further includes a third horizontal plane located between the first horizontal plane and a bottom line, wherein the third horizontal plane has a third tangent at an intersection between the third horizontal plane and the center vertical plane that is an angle to the first tangent. Both tangents are between 0.05° and 2.0° to the first tangent, and are selected specifically to a particular golfer's swing speed.

Description

FIELD OF THE INVENTION[0001]This invention relates to a golf club head having a twisted face angle and a method of matching the swing speed of a golfer to a corresponding twisted face angle.BACKGROUND OF THE INVENTION[0002]Methods of custom fitting a golfer to the most suitable golf club, taking into account different swing characteristics, are well known within the golf industry. For example, the testing laboratory at the Acushnet Golf Center in New Bedford, Mass. has been measuring and analyzing the swing characteristics and ball launch conditions of thousands of golfers since the early seventies. As a result of this testing, Acushnet has developed an accurate method of matching a golfer with particularized golfing equipment. This method utilizes sophisticated equipment for measuring the launch conditions of struck balls. For example, the golfer hits a variety of drivers having variations in head and shaft characteristics, and golf balls of different construction and performance l...

Claims

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Application Information

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IPC IPC(8): A63B53/00
CPCA63B59/0074A63B53/00A63B60/42A63B60/00
Inventor SHEAR, DAVID A.
Owner ACUSHNET CO
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