METHOD OF MANUFACTURING GOLF CLUB HEAD AND GOLF CLUB HEAD

• US 20090036228A1
• Filed: 09/18/2007
• Published: 02/05/2009
• Est. Priority Date: 08/02/2007
• Status: Abandoned Application

• Current Assignee: Bridgestone Sports Co Limited (Bridgestone Corporation)
• Original Assignee: Bridgestone Sports Co Limited (Bridgestone Corporation)
• Inventors: Ban, Wataru, Sato, Fumiaki
• Application Number:
  US11/856,950
• Publication Number:
  US 20090036228A1
• Time in Patent Office: Days
• US Class Current: 473/331
• CPC Class Codes: A63B 53/04 Heads
• 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: A63B 60/00 Details or accessories of golf clubs, bats, rackets or the like
• CPC Class Codes: Y10T 29/49996 Successive distinct removal operations

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, uniformly along the longitudinal direction of the grooves by cutting into the edges of the grooves formed in the first forming step, notches having an arcuate cross-sectional shape.

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, uniformly along the longitudinal direction of the grooves by cutting into the edges, notches having arced cross-sectional shapes at both edges of the grooves.

2. The method according to claim 1, wherein in the second forming step, the notches 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 maximum cutting depth from the apex of the edge of the groove 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, uniformly along the longitudinal direction of the grooves by cutting into the edges, notches having arced cross-sectional shapes at both edges of the grooves.

5. A golf club head having a plurality of score lines on a face, wherein the score lines include notches formed at both edges of the score lines uniformly along the longitudinal direction of the score lines and having arced cross-sectional shapes.