Multi-material golf club head

Patent metadata

Field	Value
Publication number	US-10245479-B2
Application number	US-201615375877-A
Country	US
Kind code	B2
Filing date	Dec 12, 2016
Priority date	Nov 18, 2015
Publication date	Apr 2, 2019
Grant date	Apr 2, 2019

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. The present invention achieves this without sacrificing the sound performance of the golf club head.

First claim

What is claimed is:

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 or 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 25% to about 45%; and

wherein said golf club head produces a sound that has a Critical Time T critical of greater than about 0.01 seconds and less than about 0.02 seconds; said Critical Time T critical is defined as the amount of time it take said sound to oscillate from a peak amplitude A peak to a point of 10% of said peak amplitude A peak .

2. The golf club head of claim 1 , wherein said Critical Time T critical is greater than about 0.015 seconds and less than about 0.02 seconds.

3. The golf club head of claim 2 , wherein said Critical Time T critical is greater than about 0.0175 seconds and less than about 0.02 seconds.

4. The golf club head of claim 3 , wherein said lightweight cover layer has an Internal Exposure Percentage of between about 20% to about 50%.

5. 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/cm 3 .

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 1.75 g/cm 3 .

7. The golf club head of claim 6 , wherein said lightweight cover layer is made out of a material with a density of less than about 1.50 g/cm 3 .

8. 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 or said sole portion further comprises a base layer
wherein said golf club head produces a sound that has a Critical Time T critical of greater than about 0.01 seconds and less than about 0.02 seconds; said Critical Time T critical is defined as the amount of time it take said sound to oscillate from a peak amplitude A peak to a point of 10% of said peak amplitude A peak .

9. The golf club head of claim 8 , wherein said Critical Time T critical is greater than about 0.015 seconds and less than about 0.02 seconds.

10. The golf club head of claim 9 , wherein said Critical Time T critical is greater than about 0.0175 seconds and less than about 0.02 seconds.

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. The golf club head of claim 11 , wherein said base layer is made out of a material with a density of between about 4.0 g/cm 3 and about 4.7 g/cm 3 .

15. 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/cm 3 and about 4.6 g/cm 3 .

16. The golf club head of claim 15 , wherein said lightweight cover layer is made out of a material with a density of less than about 2.7 g/cm 3 .

17. The golf club head of claim 16 , wherein said lightweight cover layer is made out of a material with a density of less than about 1.75 g/cm 3 .

18. The golf club head of claim 17 , wherein said lightweight cover layer is made out of a material with a density of less than about 1.50 g/cm 3 .

19. 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 or said sole portion further comprises a base layer and a lightweight cover layer;
said base layer does not contain any cutouts, and
said lightweight cover layer has an Internal Exposure Percentage of 0%; and

wherein said golf club head produces a sound that has a Critical Time T critical of greater than about 0.01 seconds and less than about 0.02 seconds; said Critical Time T critical is defined as the amount of time it take said sound to oscillate from a peak amplitude A peak to a point of 10% of said peak amplitude A peak .

Assignees

• Acushnet Co

Inventors

• Murphy Stephen S
• Golden Charles E
• Myrhum Mark C
• Cleghorn Richard L
• Deshmukh Uday V
• Frame Nick

Classifications

• A63B60/50

  with through-holes (A63B60/18 takes precedence; for stringing purposes A63B49/00) · CPC title

• A63B60/52

  with slits · CPC title

• A63B2053/0437

  Human Necessities · mapped topic

• A63B2209/00

  Characteristics of used materials · CPC title

• A63B2209/02

  with reinforcing fibres, e.g. carbon, polyamide fibres · CPC title