Golf club head

• US 7,846,040 B2
• Filed: 06/09/2010
• Issued: 12/07/2010
• Est. Priority Date: 11/28/2006
• Status: Expired due to Fees

• Current Assignee: Bridgestone Sports Co Limited (Bridgestone Corporation)
• Original Assignee: Bridgestone Sports Co Limited (Bridgestone Corporation)
• Inventors: Ban, Wataru
• Primary Examiner(s): Blau; Stephen L.
• Application Number:
  US12/797,004
• Publication Number:
  US 20100261545A1
• Time in Patent Office: 181 Days
• Field of Search: 473330-331
• 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

Abstract

A golf club head of this invention includes a face, a plurality of score line grooves formed on the face, and a plurality of striations formed on the face. The angle formed by an arrangement direction of the plurality of striations and the score line grooves is between 40 degrees and 70 degrees, inclusive, as viewed clockwise from a toe side end of the score line grooves.

Claims

1. A golf club head comprising:

a face;

a plurality of score line grooves formed on the face; and

a plurality of striations formed on the face,

wherein all of said score line grooves are straight, and parallel to each other;

all of said striations are straight, and parallel to each other; and

an angle between a direction orthogonal to said striations and said score line grooves is between 40 degrees and 70 degrees, inclusive, as viewed clockwise from a toe side end of said score line grooves, wherein said score lines and said striations exist together on a same area of said face, and wherein a maximum depth of said score line grooves is deeper than a maximum depth of grooves formed by said striations.

2. The golf club head according to claim 1, wherein said striations are formed by milling.

3. The golf club head according to claim 1, wherein said face in which the striations are formed has an arithmetic mean deviation of a profile (Ra) of not less than 4.00 μ

m and not more than 4.57 μ

m.

4. The golf club head according to claim 1, wherein each of said score line grooves intersects a plurality of said striations.