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US 9,283,447 B1Granted
Golf club head with composite face
AssigneeCallaway Golf Company
InventorsBrandon D. DeMille, Steven M. Ehlers
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Abstract
A novel material comprising collections of prepreg plies and a variable thickness core material such as sheet molding compound or metal, methods of forming said material, and golf clubs comprising said material are disclosed herein.
Claims9
A golf club head comprising a component composed of a composition comprising:
- a first plurality of prepreg plies;
- a second plurality of prepreg plies;
- and
- a variable thickness core material,
- wherein the variable thickness core material is permanently sandwiched between the first plurality of prepreg plies and the second plurality of prepreg plies,
- wherein the variable thickness core comprises a sheet molding compound comprising bundles of aligned carbon fibers and at least one reinforcing fiber material,
- wherein the carbon fiber bundles have random orientations within the sheet molding compound,
- wherein the carbon fiber bundles are pre-spread prior to being processed into the sheet molding compound,
- wherein the at least one reinforcing fiber material is selected from the group consisting of carbon, fiberglass, and aramid,
- wherein the component comprises a variable thickness pattern,
- wherein the component satisfies at least one equation selected from the group consisting of
- Dxx
- Dyy
- >
- C
- and
- Dyy
- Dxx
- >
- C
- ,
- and
- wherein C is at least 1 and is no more than 1.5.
20 more elements
A golf club head comprising:
- a body comprising a top portion, a bottom portion, and a face portion;
- and
- a first patch composed of a composition comprising:
- a first plurality of prepreg plies;
- a second plurality of prepreg plies;
- and
- a variable thickness core material,
- wherein the variable thickness core material is permanently sandwiched between the first plurality of prepreg plies and the second plurality of prepreg plies,
- wherein the variable thickness core material comprises a sheet molding compound comprising bundles of aligned carbon fibers and at least one reinforcing fiber material,
- wherein the carbon fiber bundles have random orientations within the sheet molding compound,
- wherein the carbon fiber bundles are pre-spread prior to being processed into the sheet molding compound,
- wherein the at least one reinforcing fiber material is selected from the group consisting of carbon, fiberglass, and aramid,
- wherein the first patch is affixed to an inner surface of the face portion, and
- wherein the face portion comprises at least one hole through which a portion of the first patch is visible.
11 more elements
Dependencies are inferred from the claim text.