Weighted iron set

Patent metadata

Field	Value
Publication number	US-11478684-B2
Application number	US-202017117758-A
Country	US
Kind code	B2
Filing date	Dec 10, 2020
Priority date	Feb 19, 2015
Publication date	Oct 25, 2022
Grant date	Oct 25, 2022

Abstract

The present invention is direct to a set of golf clubs comprising long irons, mid-irons and short irons. The invention contemplates the use of titanium or steel for the main body portion and a tungsten weight member coupled to the toe and a tungsten heel weight member coupled in a hosel cavity.

First claim

What is claimed is:

1. A golf club comprising a club head having a club head mass and:
a y-axis extending vertically through a face center of the club head and a Moment of Inertia about the y-axis,
a body made of steel comprising a heel, a toe, a topline, a sole, a hosel, and a back wall,
a face insert formed of steel and having a face insert mass, the face insert having a thickness of 1.8 mm or less and an Ultimate Tensile Strength of 2000 MPa or greater, the face insert being welded to the body to form a hollow cavity between the face insert and the back wall;
a weight member formed of tungsten and is coupled in a lower portion of the hollow cavity and has a weight member mass that comprises greater than 25% of the club head mass; and
a heel weight member formed of tungsten and coupled in a hosel cavity of the body such that a shaft axis of the hosel intersects the heel weight member below the hosel;
wherein the face insert mass is less than the weight member mass, and
wherein the sole has a sole width and the face insert includes a face insert sole portion that extends from a leading edge of the face insert toward the back wall a distance in front-to-back direction that is at least 25% of the sole width.

2. The golf club of claim 1 , wherein the heel weight member comprises between 5% and 10% of the club head mass.

3. The golf club of claim 1 , wherein the Moment of Inertia about the y-axis is greater than 230 kg-mm 2 .

4. The golf club of claim 3 , wherein the club head has a Moment of Inertia about the shaft axis that is between 650 kg-mm 2 and 700 kg-mm 2 .

5. The golf club of claim 1 , wherein the Moment of Inertia about the y-axis is greater than 260 kg-mm 2 .

6. The golf club of claim 1 , wherein the face insert has a perimeter region surrounding a center that is thicker than the perimeter region and a smooth transition zone connects the center to the perimeter region.

7. The golf clubs of claim 1 , wherein the club head further comprises a medallion that covers an aperture in the back wall.

8. A golf club comprising a club head having a club head mass and:
a y-axis extending vertically through a face center of the club head and a Moment of Inertia about the y-axis,
a body made of steel comprising a heel, a toe, a topline, a sole, a hosel, and a back wall,
a face insert formed of steel and having a face insert mass, the face insert having a thickness of 1.8 mm or less and an Ultimate Tensile Strength of 2300 MPa or greater, the face insert being welded to the body to form a hollow cavity between the face insert and the back wall;
a weight member formed of tungsten and is coupled in a lower portion of the hollow cavity and has a weight member mass that comprises greater than 25% of the club head mass; and
a heel weight member formed of tungsten and coupled in a hosel cavity of the body;
wherein the face insert mass is less than the weight member mass, and
wherein the sole has a sole width and the face insert includes a face insert sole portion that extends from a leading edge of the face insert toward the back wall a distance in front-to-back direction that is at least 25% of the sole width.

9. The golf club of claim 8 , wherein the heel weight member comprises between 5% and 10% of the club head mass.

10. The golf club of claim 8 , wherein the Moment of Inertia about the y-axis is greater than 230 kg-mm 2 .

11. The golf club of claim 10 , wherein the club head has a Moment of Inertia about the shaft axis that is between 650 kg-mm 2 and 700 kg-mm 2 .

12. The golf club of claim 8 , wherein the Moment of Inertia about the y-axis is greater than 260 kg-mm 2 .

Assignees

• Acushnet Co

Inventors

• Mata Jason A
• Ines Marni D
• Hebreo Jonathan
• Breier Joshua G
• Franz Michael E
• Stokes Joshua C
• Martens Grant M

Classifications

• A63B53/0475

  with one or more enclosed cavities · CPC title

• A63B2209/00

  Characteristics of used materials · CPC title

• A63B2053/0491

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

• A63B53/005 Primary

  Club sets · CPC title

• A63B53/0416

  Heads having an impact surface provided by a face insert · CPC title