GOLF CLUB HEAD

• US 20100331101A1
• Filed: 12/23/2009
• Published: 12/30/2010
• Est. Priority Date: 06/26/2009
• Status: Active Grant

• Current Assignee: Bridgestone Sports Co Limited (Bridgestone Corporation)
• Original Assignee: Bridgestone Sports Co Limited (Bridgestone Corporation)
• Inventors: Matsunaga, Hideo, Takahashi, Hiroshi, Sato, Fumiaki
• Granted Patent: US 7,927,231 B2
• Time in Patent Office: Days
• US Class Current: 473/336
• CPC Class Codes: A63B 2053/0491 with added weights, e.g. changeable, replaceable
• CPC Class Codes: A63B 53/0433 with special sole configurations
• CPC Class Codes: A63B 53/0466 wood-type
• CPC Class Codes: A63B 53/06 adjustable
• CPC Class Codes: A63B 60/04 Movable ballast means A63B15/005 takes precedence
• CPC Class Codes: A63B 60/54 with means for damping vibrations

Abstract

A golf club head according to this invention includes a hollow head body, cylindrical body, weight member, and fixing member. The hollow head body has a projection formed along the periphery of the sole, a recess formed inside the projection, and an opening formed in the projection so as to extend from the toe side to the back side. The cylindrical body is provided in the recess of the head body, and includes its one end which engages with the inner wall of the projection on the heel side, and its other end which extends to the vicinity of the opening and can move along the opening. The weight member is retractably, detachably inserted in the cylindrical body. The fixing member is a detachable member which fixes the other end of the cylindrical body onto the projection.

Claims

1. A golf club head comprising:

a hollow head body including a projection formed along a periphery of a sole, a recess formed inside said projection, and an opening formed in said projection so as to extend from a toe side to a back side;

a cylindrical body which is provided in said recess of said head body, includes one end that engages with an inner wall of said projection on a heel side, and the other end that extends to a vicinity of said opening and can move along said opening;

a weight member retractably, detachably inserted in said cylindrical body; and

a detachable fixing member which fixes said other end of said cylindrical body onto said projection.

3. The head according to claim 1, wherein a plurality of weight members retractably, detachably engage with a thread on an inner wall of said cylindrical body.

2. A golf club head comprising:

a hollow head body including a projection formed along a periphery of a sole, a recess formed inside said projection, an opening formed in said projection so as to extend from a toe side to a back side, a thread formed on an inner wall of said opening, and at least one groove portion formed in an inner wall of said projection on a heel side;

a cylindrical body which is provided in said recess of said head body, includes one end inserted in said groove portion, the other end that extends to a vicinity of said opening and can move along said opening, and a thread formed on an inner wall thereof;

a weight member which includes a thread formed on an outer wall thereof and retractably, detachably engages with said thread on the inner wall of said cylindrical body; and

a detachable fixing screw which engages with said thread in said opening from outside said projection, and presses said other end of said cylindrical body to push said one end of said cylindrical body against said groove portion, thereby fixing said cylindrical body onto said projection.

4. The head according to claim 2, wherein a plurality of weight members retractably, detachably engage with said thread on the inner wall of said cylindrical body.