METHOD OF MANUFACTURING GOLF CLUB HEAD AND GOLF CLUB HEAD

• US 20090029797A1
• Filed: 09/18/2007
• Published: 01/29/2009
• Est. Priority Date: 07/24/2007
• Status: Active Grant

• Current Assignee: Bridgestone Sports Co Limited (Bridgestone Corporation)
• Original Assignee: Bridgestone Sports Co Limited (Bridgestone Corporation)
• Inventors: Ban, Wataru, Sato, Fumiaki
• Granted Patent: US 7,798,918 B2
• Time in Patent Office: Days
• US Class Current: 473/331
• CPC Class Codes: A63B 53/0408 characterised by specific dimensions, e.g. thickness
• CPC Class Codes: A63B 53/0445 Details of grooves or the like on the impact surface
• CPC Class Codes: A63B 53/0466 wood-type
• CPC Class Codes: A63B 53/047 iron-type
• CPC Class Codes: Y10T 29/49995 Shaping one-piece blank by removing material

Abstract

According to this invention, there is provided a method of manufacturing a golf cub head having a plurality of score lines on the face. The method of this invention includes the first forming step of forming grooves for the score lines on the face, and the second forming step of forming flat surfaces inclined with respect to the face by cutting into the edges of the grooves formed in the first forming step.

Claims

1. A method of manufacturing a golf club head having a plurality of score lines on a face, comprising:

a first forming step of forming grooves for the score lines on the face; and

a second forming step of forming flat surfaces inclined against the plane of the face at both edges of the grooves by cutting into the edges.

2. The method according to claim 1, wherein in the second forming step, the flat surfaces are formed by cutting the edges of the grooves by a cutting tool while the face or the cutting tool relatively moves in a direction of forming the score lines.

3. The method according to claim 2, wherein a cutting depth in a direction perpendicular to the flat surface by the cutting tool in the second forming step is not greater than 0.1 mm.

4. A golf club head having a plurality of score lines on a face, wherein the score lines are formed by first forming grooves for the score lines on the face and forming flat surfaces inclined against the plane of the face at both edges of the grooves by cutting into the edges.

5. A golf club head having a plurality of score lines on a face, wherein the score lines include flat surfaces formed at both edges of the score lines and inclined against the plane of the face.