Co-molded golf club head

Patent metadata

Field	Value
Publication number	US-12377324-B2
Application number	US-202318319430-A
Country	US
Kind code	B2
Filing date	May 17, 2023
Priority date	May 17, 2022
Publication date	Aug 5, 2025
Grant date	Aug 5, 2025

Abstract

A golf club head comprising a face plate, a body, bonding material, and at least one retainer, wherein the bonding material and at least one retainer are the sole medium coupling the face plate and body.

First claim

The invention claimed is:

1. An iron-type golf club head, comprising;
a face plate, a body, and a bonding material;
wherein the body comprises a sole, and top rail;
the bonding material is substantially disposed between the face plate and body;
the bonding material crosslinks the face plate to the body;
the face plate is not welded to the body;
the face plate comprises at least one retainer disposed within a volume of the iron-type golf club head;
the bonding material engages both the at least one body locking geometry and the at least one retainer; and

the face plate further comprises a face plate density;
the body further comprises a body density;
the iron-type golf club head further comprises a density ratio;
wherein the density ratio is a ratio of the body density to the face plate density; and
the density ratio is greater than 3.

2. The iron-type golf club head of claim 1 , wherein the at least one retainer comprises at least one circular hole.

3. The iron-type golf club head of claim 1 , further comprising a face plane, and an offset;
wherein the face plane is parallel to the face plate;
the face plane is coplanar with the face plate;
the offset is a distance between the face plate and body, measured along the face plane; and
the offset is substantially constant across the face plate.

4. The iron-type golf club head of claim 3 , wherein the offset is between 0.001 inch and 0.125 inch.

5. The iron-type golf club head of claim 1 , wherein the density ratio is greater than 4.

6. The iron-type golf club head of claim 1 , wherein a face plate hardness is greater than 35 HRC.

7. The iron-type golf club head of claim 1 , wherein a face plate hardness is greater than 50 HRC.

8. The iron-type golf club head of claim 1 , wherein the bonding material comprises a resin selected from a group consisting of Thermoplastic composite (TPC), and Thermoplastic polyurethane (TPU).

9. An iron-type golf club head, comprising:
a face plate, a body, and a bonding material;
wherein the body comprises a sole and top rail;
the bonding material is substantially disposed between the face plate and body;
the bonding material crosslinks the face plate to the body;
the face plate is not welded to the body;
the face plate comprises at least one face plate retainer disposed within a volume of the iron-type golf club head;
the body comprises at least one body retainer disposed within a volume of the iron-type golf club head;
the bonding material engages both the at least one body retainer and the at least one face plate retainer; and

the bonding material and face plate form at least one discrete void rearward of the face plate;
the face plate further comprises a face plate density;
the body further comprises a body density;
the iron-type golf club head further comprises a density ratio;
wherein the density ratio is a ratio of the body density to the face plate density; and
the density ratio is greater than 1;

wherein the face plate comprises a face plate modulus of elasticity;
the body comprises a body modulus of elasticity; and
the body modulus of elasticity is less than the face plate modulus of elasticity.

10. The iron-type golf club head of claim 9 , wherein the at least one discrete void is proximate to at least one of the top rail and sole.

11. An iron-type golf club head comprising;
a face plate, a body, and a bonding material;
wherein the body comprises a sole, and top rail;
the bonding material is substantially disposed between the face plate and body;
the bonding material crosslinks the face plate to the body;
the face plate and body are not welded together;
the face plate comprises a retainer disposed within a volume of the iron-type golf club head;
the retainer comprises a groove around a face plate perimeter;
the bonding material engages the retainer; and

the face plate further comprises a face plate density;
the body further comprises a body density;
the iron-type golf club head further comprises a density ratio;
wherein the density ratio is the ratio of the body density to the face plate density; and
the density ratio is greater than 3.

12. The iron-type golf club head of claim 11 , wherein the density ratio is greater than 4.

13. The iron-type golf club head of claim 11 , wherein a face plate hardness is greater than 35 HRA.

14. The iron-type golf club head of claim 11 , wherein a face plate hardness is greater than 50 HRC.

15. The iron-type golf club head of claim 11 , wherein the bonding material comprises a resin selected from a group consisting of Thermoplastic composite (TPC), and Thermoplastic polyurethane (TPU).

16. The iron-type golf club head of claim 15 , wherein the resin is reinforced by carbon fiber.

Assignees

• Karsten Mfg Corp

Inventors

• Matthews Joshua B
• Spackman Clayson C
• Bryant Les J
• Macmillan Rick D
• Wells Terry J

Classifications

• A63B53/0433

  with special sole configurations · CPC title

• A63B2053/0479

  Wedge-type clubs, details thereof · CPC title

• A63B2209/00

  Characteristics of used materials · CPC title

• A63B2053/0491

  with added weights, e.g. changeable, replaceable · CPC title

• A63B60/54

  with means for damping vibrations · CPC title