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US 6,440,011 B1Granted
Method for processing a striking plate for a golf club head
AssigneeCallaway Golf Company
InventorsAlan Hocknell, J. Andrew Galloway, Richard C. Helmstetter, Ronald C. Boyce
Life of this patent
Estimating the term…
Abstract
A method for producing a forged striking plate for a golf club is disclosed herein. The forging process involves multiple heating and pressing of a metal bar to obtain a final face member configuration. The heating of the metal bar is performed at temperatures below 1000° C. for less than twenty minutes. The final face member configuration has a striking plate with regions of variable thickness. The metal bar is preferably composed of a forged titanium material.
Claims15
A method for producing a face member for a golf club head, the method comprising:
- heating a cylindrical metal bar having a diameter of 1.8 centimeters and a length of 10 centimeters to a temperature ranging from 900° C. to 970° C. for a time period ranging from 10 minutes to 17 minutes;
- pressing the heated cylindrical metal bar into an L-shape metal bar;
- heating the L-shape metal bar to a temperature ranging from 900° C. to 970° C. for a time period ranging from 10 minutes to 17 minutes;
- pressing the L-shape metal bar into an intermediate shape face member;
- placing the intermediate shape face member into a tumbler for tumbling;
- coating the intermediate shape face member with a glazing compound;
- heating the coated intermediate shape face member ranging from 900° C. to 970° C. for a time period ranging from 10 minutes to 17 minutes;
- and
- immediately pressing the heated intermediate shape face member into a final face member configuration having a thickness in the range of 0.010 inch to 0.250 inch;
- and
- wherein the final face member comprises an upper lateral extension, a lower lateral extension, a heel wall a toe wall opposite the heel wall, and wherein the final face member extends laterally inward along its entire perimeter.
8 more elements
A method for producing a face member for a golf club head, the method comprising:
- heating a titanium cylindrical bar to a temperature between 900° C. and 975° C. for a time period ranging from 10 to 17 minutes, the titanium cylindrical bar having a diameter less than 2 centimeters and a length of 10 centimeters;
- pressing the heated titanium bar into an L-shape bar;
- heating the L-shape bar to a temperature between 900° C. and 975° C. for a time period ranging from 10 minutes to 17 minutes;
- pressing the heated L-shape bar into an intermediate shape face member;
- coating the intermediate shape face member with a glazing compound;
- heating the coated intermediate shape face member to a temperature between 900° C. and 975° C. for a time period ranging from 10 to 17 minutes;
- pressing the heated intermediate shape face member into a final face member configuration having an upper lateral extension, a lower lateral extension, a heel wall, and a toe wall;
- heating the final face member configuration to a temperature ranging between 250° C. and 520° C. for a period of between 15 to 20 minutes;
- pressing the heated final face member configuration in a press at a low pressure that is less than the pressure of any of the three pressings, the low pressure pressing ensuring proper bulge and roll of the final face member configuration;
- and
- drilling a hosel aperture through the upper lateral extension extending down through the lower lateral extension.
8 more elements
A method for producing a face member for a golf club head, the method comprising:
- heating a cylindrical metal bar to a temperature between 900° C. and 975° C. for a time period ranging from 10 to 17 minutes;
- pressing the heated cylindrical metal bar into an L-shape metal bar;
- heating the L-shape metal bar to a temperature between 900° C. and 975° C. for a time period ranging from 10 to 17 minutes;
- pressing the L-shape metal bar into an intermediate shape face member;
- coating the intermediate shape face member to a temperature between 900° C. and 975° C. for a time period ranging from 10 to 17 minutes;
- and
- pressing the heated intermediate shape face member into a final striking plate configuration, the final face member configuration comprising
- a striking plate with an aspect ratio ranging from 1.0 to 1.7 having an exterior surface, an interior surface and a perimeter, and
- a face extension extending laterally inward along the entire perimeter of the striking plate, the face extension having an upper portion, a lower portion opposite the upper portion, a heel wall perpendicular to the striking plate, and a toe wall opposite the heel wall.
6 more elements
Dependencies are inferred from the claim text.