High cofficient of restitution golf club head
AssigneeCallaway Golf Company
InventorsJ. Andrew Galloway, Richard C. Helmstetter, Alan Hocknell, Ronald C. Boyce, Homer E. Aguinaldo
Life of this patent
Estimating the term…
Abstract
A golf club having a club head having with a coefficient of restitution greater than 0.845 and a durability to withstand 2000 impacts with a golf ball at 110 mile per hour is disclosed herein. The club head may be composed of three pieces, a face, a sole and a crown. Each of the pieces may be composed of a titanium material. The club head may be composed of a titanium material, have a volume in the range of 175 cubic centimeters to 400 cubic centimeters, a weight in the range of 165 grams to 300 grams, and a striking plate surface area in the range of 4.00 square inches to 7.50 square inches.
Claims8
A golf club comprising:
- a golf club head having a body comprising a crown, a sole and a face member having a fiace extension and comprising a striking plate, the body having a hollow interor defined by the crown, the sole and an interior surface of the striking plate,
- the face extension of the face member comprising an upper lateral extension and a lower lateral extension, wherein a hosel section is located in the upper lateral extension and a bore section is located in the lower lateral extension;
- and
- wherein the hosel section has a width greater han the width of the entirety of the upper later extension and wherein the bore section has a width greater than the width of the entirety of the lower lateral extension;
- the golf club head having a coefficient of restitution of at least 0.85, and the striking plate having the durability to withstand failure after at least 2000 impacts with an USGA conforming golf ball against a center of the striking plate at approximately 110 miles per hour.
A golf club head comprising:
- a face member comprising a striking plate composed of a forged material for striking a golf ball having an exterior surface and an interior surface, the striking plate having a face aspect ratio between 1.0 and 1.7 and extending from a heel section of the golf club head to a toe section of the golf club head, a face extension extending laterally inward from a perimeter of the face plate, and an interior tubing for receiving a shaft, the interior tubing engaging an upper portion of the face extension and a lower portion of the face extension;
- a crown secured to the upper portion of the face extension at a distance from between 0.2 inch to 1.0 inch from the face plate;
- and
- a sole plate secured to the lower portion of the face extension at a distance from between 0.2 inch to 1.0 inch from the striking plate;
- wherein the golf club head has a coefficient of restitution of at least 0.85.
A golf club head comprising:
- a face member comprising a striking plate for striking a golf ball having an exterior surface and an interior surface, the striking plate extending from a heel section of the golf club head to a toe section of the golf club head, a face extension extending laterally inward from a perimeter of the face plate, and an interior tubing for receiving a shaft, the interior tubing engaging an upper portion of the face extension and a lower portion of the face extension;
- a crown secured to the upper portion of the face extension at a distance from between 0.2 inch to 1.0 inch from the face plate;
- and
- a sole plate secured to the lower portion of the face extension at a distance from between 0.2 inch to 1.0 inch from the striking plate;
- wherein the golf club head has a coefficient of restitutioun ring from 0.845 to 0.87, and the striking plate has the durability to withstand failure after at least 2000 impact with an USGA conforming two-piece golf ball against a center of the striking plate at approximately 110 miles per hour.
Dependencies are inferred from the claim text.