Golf club head

• US 20070117653A1
• Filed: 12/06/2004
• Published: 05/24/2007
• Est. Priority Date: 12/12/2003
• Status: Abandoned Application

• Current Assignee: Yonex Kabushiki Kaisha
• Original Assignee: Yonex Kabushiki Kaisha
• Inventors: Yoneyama, Kosaku
• Application Number:
  US10/581,101
• Publication Number:
  US 20070117653A1
• Time in Patent Office: Days
• US Class Current: 473/350
• CPC Class Codes: A63B 2209/00 Characteristics of used materials
• CPC Class Codes: A63B 2209/02 with reinforcing fibres, e.g. carbon, polyamide fibres
• CPC Class Codes: A63B 2209/023 Long, oriented fibres, e.g. wound filaments, woven fabrics, mats
• CPC Class Codes: A63B 53/0416 Heads having an impact surface provided by a face insert
• CPC Class Codes: A63B 53/0425 the face insert comprising two or more different materials
• CPC Class Codes: A63B 53/047 iron-type
• CPC Class Codes: A63B 53/0475 with one or more enclosed cavities

Abstract

A metallic frame-shaped iron head body is composed of a heel section, a toe section, an upper edge section connecting superior ends of the heel section and of the toe section, and a sole section. On a front face of the head body, a metallic thin-walled face section having a high coefficient of restitution is provided. The head body includes rear wall sections spaced apart from the face section and extending upward from a rear end of the sole section. A reinforced fiber member is placed in an area surrounded by the face section, the sole section, and the rear wall sections. This reinforced fiber member abuts on a back of the face section to form a closed hollow void section, and apart of a back of the reinforced fiber member is supported on the rear wall sections.

Claims

1. A golf club head, comprising:

a metallic frame-shaped iron head body including a heel section, a toe section, an upper edge section connecting the superior ends of the heel section and of the toe section, and a sole section; and

a metallic thin-walled face section, having a high coefficient of restitution, provided on a front face of the head body,

wherein the head body includes a rear wall section, which is spaced apart from the face section, and which extends upward from a rear end of the sole section,

a reinforced fiber member is placed in an area surrounded by the face section, the sole section, and the rear wall section, and abuts on a back of the face section to form a closed hollow void section, and

a part of a back of the reinforced fiber member is supported on the rear wall section.

2. The golf club head according to claim 1, wherein a part of the reinforced fiber member is shaped in a plate and brought in close contact with the back of the face section, and the plate-shaped part of the reinforced fiber member and another part of the reinforced fiber member form an oblong sealed closed void section.

3. The golf club head according to any one of claims 1 and 2, wherein the rear wall section is integrally formed with the rear end of the sole section.

4. The golf club head according to any one of claims 1 and 2, wherein the rear wall section is formed from a metallic plate attached to the rear end of the sole section.

5. The golf club head according to any one of claims 1 and 2, wherein a fiber reinforced resin plate is placed in close contact with the back of the face section, and the fiber reinforced resin plate and the reinforced fiber member form a sealed closed void section having a substantially triangular section when vertically cut in a front to rear direction.

6. The golf club head according to any one of claims 1 and 4, wherein part of the reinforced fiber member abutting on the back of the face plate is thicker than part of the reinforced fiber member placed at a peripheral edge thereof.

7. The golf club head according to claim 3, wherein the rear wall is composed of a chevron-shaped extension section protruding upward from an edge of the rear end of the sole section and a belt-shaped extension section diagonally connecting a top of the chevron-shaped extension section and an upper end of the toe section.

8. The golf club head according to any one of claims 1 to 7, wherein the reinforced fiber member is formed by bending a sheet of carbon fiber prepreg.

9. The golf club head according to claim 7, wherein a plate-shaped weight member is buried in a back of the chevron-shaped extension section.