Golf club head

• US 20030083151A1
• Filed: 10/22/2002
• Published: 05/01/2003
• Est. Priority Date: 10/24/2001
• Status: Active Grant

• Current Assignee: Yokohama Rubber Company Limited
• Original Assignee: Yokohama Rubber Company Limited
• Inventors: Yamamoto, Shinji, Mori, Tomoaki, Nakahara, Norihiko, Nishizawa, Yoh
• Granted Patent: US 6,929,565 B2
• Time in Patent Office: Days
• US Class Current: 473/345
• CPC Class Codes: A63B 2209/02 with reinforcing fibres, e.g. carbon, polyamide fibres
• CPC Class Codes: A63B 53/04 Heads
• CPC Class Codes: A63B 53/0416 Heads having an impact surface provided by a face insert
• CPC Class Codes: A63B 53/0433 with special sole configurations
• CPC Class Codes: A63B 53/0437 with special crown configurations
• CPC Class Codes: A63B 53/045 Strengthening ribs
• CPC Class Codes: A63B 60/00 Details or accessories of golf clubs, bats, rackets or the like
• CPC Class Codes: A63B 60/54 with means for damping vibrations

Abstract

A golf club head is provided, which is capable of obtaining both vibration damping performance and pleasant hitting sound by combining materials different in kind. This golf club head has a hollow structure, and a constitution where fiber reinforced plastic having a mass ratio of 4% or more in the entire head is used for at least one of neck, face, sole, crown and side portions, and the rest is made of metal. An outer shell of the hollow structure includes both of a part made of only metal and a part made of only fiber reinforced plastic.

Claims

1. A golf club head having a hollow structure, comprising:

a neck portion;

a face portion;

a sole portion;

a crown portion; and

a side portion,

wherein fiber reinforced plastic having a mass ratio of 4% or more in the entire head is used for at least one of the neck, face, sole, crown and side portions, and the rest is made of metal.

3. The golf club head according to claim 1, wherein the fiber reinforced plastic is used for the crown portion.

5. The golf club head according to any one of claims 1 to 4, wherein for the metal, two or more kinds of metals are used for different parts.

6. The golf club head according to any one of claims 1 to 4, wherein for the fiber reinforced plastic, two or more kinds of fiber reinforced plastics are used for different parts.

7. The golf club head according to any one of claims 1 to 4, wherein an elastic modulus of fibers used in the fiber reinforced plastic is less than 27 tons/mm².

8. The golf club head according to any one of claims 1 to 4, wherein an elastic modulus of fibers used in the fiber reinforced plastic is 27 tons/mm² or more.

2. A golf club head having a hollow structure, comprising:

a neck portion;

a face portion;

a sole portion;

a crown portion; and

a side portion,

wherein fiber reinforced plastic having a mass ratio of 4% or more in the entire head is used for at least one of the neck, face, sole, crown and side portions, the rest is made of metal, and an outer shell of the hollow structure includes both of a part made of only the metal and a part made of only the fiber reinforced plastic.

4. The golf club head according to claim 2, wherein the fiber reinforced plastic is used for the crown portion.