MULTI-MATERIAL GOLF CLUB HEAD

• US 20170136314A1
• Filed: 11/18/2015
• Published: 05/18/2017
• Est. Priority Date: 11/18/2015
• Status: Active Grant

• Current Assignee: Acushnet Company (FILA Holdings Corp.)
• Original Assignee: Acushnet Company (FILA Holdings Corp.)
• Inventors: Myrhum, Mark C., Deshmukh, Uday V., Cleghorn, Richard L.
• Granted Patent: US 10,065,084 B2
• Time in Patent Office: Days
• CPC Class Codes: A63B 2209/00 Characteristics of used materials
• CPC Class Codes: A63B 2209/02 with reinforcing fibres, e.g. carbon, polyamide fibres
• CPC Class Codes: A63B 53/0408 characterised by specific dimensions, e.g. thickness
• CPC Class Codes: A63B 53/0433 with special sole configurations
• CPC Class Codes: A63B 53/0437 with special crown configurations
• CPC Class Codes: A63B 53/0466 wood-type
• CPC Class Codes: A63B 60/002 Resonance frequency related characteristics
• CPC Class Codes: A63B 60/50 with through-holes A63B60/18 takes precedence; for stringing purposes A63B49/00
• CPC Class Codes: A63B 60/52 with slits

Abstract

A golf club head made out of multi-material is disclosed herein. More specifically, the golf club head in accordance with the present invention has at least a portion of the body of the golf club head that is further comprised out of a base layer and a lightweight cover layer. The base layer may have a plurality of cutouts to help reduce unnecessary mass and the lightweight cover layer may be made out of an ultra-lightweight material to further reduce the unnecessary mass.

Claims

1. A golf club head comprising:

a striking face portion located at a frontal portion of said golf club head; and

a body portion attached to an aft portion of said striking face portion further comprising a crown portion and a sole portion;

wherein at least one of said crown portion and said sole portion further comprises a base layer and a lightweight cover layer;

said base layer further comprises a plurality of cutouts, and

said lightweight cover layer has an Internal Exposure Percentage of between about 15% to about 60%.

2. The golf club head of claim 1, wherein said lightweight cover layer has an Internal Exposure Percentage of between about 20% to about 50%.

3. The golf club head of claim 2, wherein said lightweight cover layer has an Internal Exposure Percentage of between about 25% to about 45%.

4. The golf club head of claim 1, wherein said lightweight cover layer is made out of a material with a density of less than about 2.7 g/cm³.

5. The golf club head of claim 4, wherein said lightweight cover layer is made out of a material with a density of less than about 1.75 g/cm³.

6. The golf club head of claim 5, wherein said lightweight cover layer is made out of a material with a density of less than about 1.50 g/cm³.

7. The golf club head of claim 6, wherein said lightweight cover layer is made out of a composite material.

8. The golf club head of claim 7, wherein said base layer is made out of a material with a density of between about 4.0 g/cm³ and about 4.7 g/cm³.

9. The golf club head of claim 8, wherein said base layer is made out of a material with a density of between about 4.1 g/cm³ and about 4.6 g/cm³.

10. The golf club head of claim 9, wherein said base layer is made out of titanium material.

11. The golf club head of claim 10, wherein said base layer has a maximum thickness of less than about 0.50 mm, and said lightweight cover layer has a maximum thickness of less than about 0.30 mm.

12. The golf club head of claim 11, wherein said base layer has a maximum thickness of less than about 0.40 mm, and said lightweight cover layer has a maximum thickness of less than about 0.25.

13. The golf club head of claim 12, wherein said base layer has a maximum thickness of less than about 0.35 mm, and said lightweight cover layer has a maximum thickness of less than about 0.20.

14. A golf club head comprising:

a striking face portion located at a frontal portion of said golf club head; and

a body portion attached to an aft portion of said striking face portion further comprising a crown portion and a sole portion;

wherein at least one of said crown portion and said sole portion further comprises a base layer and a lightweight cover layer;

said base layer further comprises a plurality of cutouts, and

said lightweight cover layer has an Internal Exposure Percentage of between about 15% to about 60%, and

wherein said base layer has a maximum thickness of less than about 0.50 mm, and said lightweight cover layer has a maximum thickness of less than about 0.30 mm.

15. The golf club head of claim 14, wherein said plurality of cutouts is substantially circular in shape.

16. The golf club head of claim 14, wherein only said crown portion further comprises said base layer and a lightweight cover layer.

17. The golf club head of claim 14, wherein both said crown portion and said sole portion further comprises a base layer and said lightweight cover layer.

18. The golf club head of claim 14, wherein said body portion further comprises a bridge member, attached to a central portion rearward of said striking face portion, separating a sole side and a heel side of said golf club head.

19. The golf club head of claim 14, wherein said base layer is made out of a material with a density of between about 4.1 g/cm³ and about 4.6 g/cm³.

20. The golf club head of claim 19, wherein said lightweight cover layer is made out of a material with a density of less than about 1.70 g/cm³.