Golf club head comprising microscopic bubble material

Patent metadata

Field	Value
Publication number	US-12239891-B2
Application number	US-202318374214-A
Country	US
Kind code	B2
Filing date	Sep 28, 2023
Priority date	Feb 9, 2017
Publication date	Mar 4, 2025
Grant date	Mar 4, 2025

Abstract

A golf club head with a face component having a variable thickness and a coating on a rear surface of the face component that provides a flat surface to which a medallion can be affixed, and methods of manufacturing such golf club heads, are disclosed herein. The coating is made from a fill material comprising a polymer and a plurality of microscopic bubbles, which preferably constitute 5-70% of the volume of the fill material. The polymer material preferably is a polyurethane having a Poisson's ratio of 0.40-0.50.

First claim

We claim:

1. A golf club head comprising:
a body comprising a striking face with a rear surface, a sole portion, a top portion, a rear portion, and a cavity; and
a layer covering at least a portion of the rear surface, the layer comprising a first material and a plurality of microscopic bubbles composed of a second material, wherein each bubble of the plurality of microscopic bubbles has a diameter of approximately 18-50 microns.

2. The golf club head of claim 1 , further comprising a medallion and an adhesive material, wherein the medallion is affixed to the layer with the adhesive material.

3. The golf club head of claim 2 , wherein the medallion comprises the layer.

4. The golf club head of claim 3 , wherein the golf club head is an iron-type golf club head.

5. The golf club head of claim 1 , further comprising a weight, wherein the weight is disposed within the cavity.

6. The golf club head of claim 5 , wherein the weight comprises a tungsten alloy.

7. The golf club head of claim 6 , wherein the weight is at least partially enveloped in a urethane material to form a covered weight.

8. The golf club head of claim 7 , wherein the covered weight is at least partially enveloped in the layer.

9. The golf club head of claim 8 , wherein the covered weight is completely enveloped in the layer.

10. The golf club head of claim 5 , wherein a combination of the weight and the layer completely fills the cavity.

11. The golf club head of claim 1 , wherein the second material is selected from the group consisting of glass, ceramic, and plastic.

12. The golf club head of claim 1 , wherein the first material has a Poisson's ratio of 0.00-0.50.

Assignees

• Topgolf Callaway Brands Corp

Inventors

• Westrum Joshua D
• Jeon Hong G
• Manwaring Scott
• Meacham Kenneth E
• Roche Brooks

Classifications

• A63B60/002

  Resonance frequency related characteristics · CPC title

• A63B60/00 Primary

  Details or accessories of golf clubs, bats, rackets or the like · CPC title

• A63B2209/00

  Characteristics of used materials · CPC title

• A63B53/0475 Primary

  with one or more enclosed cavities · CPC title