Golf club head and method of manufacturing the same

• US 8,845,455 B2
• Filed: 08/30/2012
• Issued: 09/30/2014
• Est. Priority Date: 10/27/2011
• Status: Active Grant

• Current Assignee: Bridgestone Sports Co Limited (Bridgestone Corporation)
• Original Assignee: Bridgestone Sports Co Limited (Bridgestone Corporation)
• Inventors: Ban, Wataru, Wada, Kozue
• Primary Examiner(s): PIERCE, WILLIAM M
• Application Number:
  US13/599,656
• Publication Number:
  US 20130109498A1
• Time in Patent Office: 761 Days
• Field of Search: 473/330, 473/331
• US Class Current: 473/330
• CPC Class Codes: A63B 53/042 the face insert consisting of a material different from that of the head
• 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 53/0487 for putters A63B53/065 takes precedence
• CPC Class Codes: Y10T 29/49826 Assembling or joining
• CPC Class Codes: Y10T 29/49995 Shaping one-piece blank by removing material

Abstract

This invention provides a golf club head including a plurality of scorelines formed in its face surface and extending in the toe-to-heel direction. This golf club head includes a recessed portion for the cutting start of each scoreline, which is formed at one end or each of both ends of the scoreline in the longitudinal direction at a depth equal to or larger than that of the scoreline.

Claims

1. A method of manufacturing a golf club head including a plurality of scorelines formed in a face surface and extending in a toe-to-heel direction, comprising:

forming a recessed portion for a cutting start of each of the scorelines in a golf club head blank, in which the scorelines are to be formed, at a depth greater than a depth of each of the scorelines; and

inserting a distal end of an end mill into the recessed portion, and moving at least one of the end mill or the golf club head blank relative to the other, thereby forming each of the scorelines by cutting.

2. The method according to claim 1, wherein

the recessed portion includes a depressed portion which is formed on a toe side of the face surface and recedes from the face surface, and

the manufacturing method further comprises the step of fixing the plate to the depressed portion.

3. A method of manufacturing a golf club head including a plurality of scorelines formed in a face surface and extending in a toe-to-heel direction, comprising:

forming recessed portions, each recessed portion being for a cutting start of one of the scorelines in a golf club head blank, in which the scorelines are to be formed, at a depth greater than a depth of each of the scorelines; and

inserting a distal end of an end mill into each of the recessed portions, and moving at least one of the end mill or the golf club head blank relative to the other, thereby forming each of the scorelines by cutting.