Composite golf club head

• US 6,805,643 B1
• Filed: 08/18/2003
• Issued: 10/19/2004
• Est. Priority Date: 08/18/2003
• Status: Expired due to Fees

• Current Assignee: O-Ta Precision Casting Co., Ltd.
• Original Assignee: O-Ta Precision Casting Co., Ltd.
• Inventors: Lin, Chon-Chen
• Primary Examiner(s): Vidovich, Gregory
• Assistant Examiner(s): HUNTER, ALVIN A
• Application Number:
  US10/643,725
• Time in Patent Office: 428 Days
• Field of Search: 473/324, 473/334, 473/338, 473/347, 473/313, 473/305, 473/345
• US Class Current: 473/345
• CPC Class Codes: A63B 2053/0491 with added weights, e.g. changeable, replaceable
• 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 53/0433 with special sole configurations
• CPC Class Codes: A63B 53/047 iron-type
• CPC Class Codes: A63B 60/02 Ballast means for adjusting the centre of mass A63B60/24, A63B60/54 take precedence

Abstract

A composite golf club head includes a strike plate having a neck formed at an end of the strike plate. A rear portion is formed at an upper side of the strike plate and extends backwards. An inner plate, made up of multiple layers of fiber prepreg material, is adhered to an interior surface of the strike plate by a first of two adhesive sheets. A cover, made up of multiple layers of the fiber prepreg material, is adhered to the back of the rear portion by a second of the adhesive sheets. A bottom plate, made up of a metal material, is adhered to bottom portions of the strike plate and the cover by the adhesive sheets to close the head. A seat is formed inside the bottom plate, and a hole is defined through the seat. A balance member is engaged in the hole.

Claims

1. A composite golf club head comprising:

a strike plate having a neck formed at an end of the strike plate and a rear portion formed at an upper side of the strike plate and extending backwards;

an inner plate, made up of multiple layers of fiber prepreg material, adhered to an interior surface of the strike plate by a first of two adhesive sheets;

a cover, made up of multiple layers of the fiber prepreg material, adhered to the back of the rear portion by a second of the two adhesive sheets;

a bottom plate, made up of a metal material, adhered to bottom portions of the strike plate and the cover by the adhesive sheets to close the head, the bottom plate having a seat formed inside the bottom plate, and a hole defined through the seat; and

a balance member engaged in the hole.

2. The composite golf club head as claimed in claim 1, wherein the strike plate is integrally formed with the neck and the rear portion.

3. The composite golf club head as claimed in claim 1, wherein the strike plate is formed as a sandwich structure being composed of a titanium plate, a titanium fiber prepreg material and a carbon fiber prepreg material adhered together, and then embedded between the neck and the rear portion.

4. The composite golf club head as claimed in claim 1, wherein the adhesive sheets tightly abut an inside wall of the golf club head by means of pumping air into an air cell received in the golf head during a manufacturing process.