Composite golf club head
AssigneeCallaway Golf Company
InventorsJames M. Murphy, Herbert Reyes, D. Clayton Evans, J. Andrew Galloway, Richard C. Helmstetter, Daniel R. Jacobson
Life of this patent
Estimating the term…
Abstract
A golf club having a club head with a striking plate composed of a composite material and having a thickness in the range of 0.010 to 0.250 inches is disclosed herein. The golf club head also has a coefficient of restitution greater than 0.8 under test conditions such as the USGA test conditions specified pursuant to Rule 4-1e, Appendix II, of the Rules of Golf for 1998-1999. The golf club head body is also composed of a composite material, and a weight strip is placed within a ribbon of the body.
Claims3
A fairway wood or driver golf club head comprising:
- a hollow body having a crown, a sole a striking plate and a ribbon extending from a toe to a heel end of the club head, a hollow interior of the hollow body defined by the crown, the sole, the striking plate and the ribbon, the hollow body composed of a plurality of plies of pre-preg sheets containing fibers, wherein the hollow body has a volume ranging from 175 cubic centimeters to 400 cubic centimeters, wherein the striking plate has a thickness in the range of 0.010 inch to 0.250 inch;
- one or more weight strips being embedded in the ribbon, the one or more weight strips composed of a material having a density greater than the plies of pre-preg sheets containing fibers;
- and
- a return disposed between the striking plate and the crown directly rearward of the striking plate, the return having a thickness in the range of 0.100 inch to 0.200 inch, and the return having a thickness greater than the thickness of the crown;
- wherein the golf club head has a coefficient of restitution of 0.8 to 0.9.
A driver-type golf club head comprising:
- a hollow body having crown, a sole, a ribbon, and a striking plate composed of a plurality of face/crown plies and a plurality of full face plies of pre-preg sheets containing fibers, wherein the striking plate has a thickness in the range of 0.010 inch to 0.250 inch and an aspect ratio of 1.0 to 1.7, a hollow interior of the hollow body defined by the crown, the sole, the striking plate and the ribbon;
- and
- a return disposed between the striking plate and the crown directly rearward of the striking plate, the return having a thickness in the range of 0.100 inch to 0.200 inch, and the return having a thickness greater than the thickness of the crown;
- wherein the golf club has a volume of between 175 cubic centimeters to 400 cubic centimeters, a mass ranging from 175 grams to 225 grams, and a coefficient of restitution of 0.8 to 0.9.
A golf club head for a fairway wood or driver, the golf club head comprising:
- a hollow body crown, a sole, a ribbon, and a striking plate composed of a plurality of face/crown plies and a plurality of full face plies of pre-preg sheets containing fibers, wherein the striking plate has a thickness in the range of 0.010 inch to 0.250 inch and an aspect ratio of 1.0 to 1.7, a hollow interior of the hollow body defined by the crown, the sole, the striking plate and the ribbon;
- and
- a return disposed between the striking plate and the crown directly rearward of the striking plate, the return having a thickness in the range of 0.100 inch to 0.200 inch, and the return having a thickness greater than the thickness of the crown;
- wherein the striking plate and crown are composed of at least nineteen full face plies of pre-preg sheets containing fibers, at least ten face doubler plies and at least eight face/grown plies of pre-preg sheets containing fibers, in a quasi-isotropic orientation;
- wherein the sole and ribbon are composed of at least eight sole plies of pre-preg sheets in a quasi-isotropic orientation containing fibers and a weight strip composed of a material having a density greater than the plies of pre-preg sheets containing fibers;
- wherein the golf club has a volume of between 175 cubic centimeters to 400 cubic centimeters, a mass ranging from 175 grams to 225 grams, and a coefficient of restitution of 0.8 to 0.9.
Dependencies are inferred from the claim text.