Weighted iron set

Patent metadata

Field	Value
Publication number	US-2023021981-A1
Application number	US-202217951243-A
Country	US
Kind code	A1
Filing date	Sep 23, 2022
Priority date	Feb 19, 2015
Publication date	Jan 26, 2023
Grant date	—

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; 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 that defines a shaft axis, 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 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 club head comprises a heel weight member that 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 1 , wherein the Moment of Inertia about the y-axis is greater than 260 kg-mm 2 .

5 . The golf club of claim 1 , 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 .

6 . The golf club of claim 1 , wherein the club head has a center of gravity in a y direction from a ground surface, CGy, that is less than about 18 mm.

7 . The golf club of claim 1 , wherein the club head has a center of gravity depth from the face center toward the back wall, CGz, that is greater than 6 mm.

8 . 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.

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

10 . A golf club comprising:
a club head having a club head mass; 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 defining a shaft axis, 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 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.

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 10 , wherein the club head has a center of gravity in a y direction from a ground surface, CGy, that is less than about 18 mm.

13 . The golf club of claim 10 , wherein the club head has a center of gravity depth from the face center toward the back wall, CGz, that is greater than 6 mm.

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

• A63B2053/0491

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

• A63B53/0475

  with one or more enclosed cavities · CPC title

• A63B2209/00

  Characteristics of used materials · CPC title

• A63B53/047 Primary

  iron-type · CPC title

• A63B53/005 Primary

  Club sets · CPC title