Golf club head and golf club

• US 20040152539A1
• Filed: 01/23/2004
• Published: 08/05/2004
• Est. Priority Date: 02/04/2003
• Status: Active Grant

• Current Assignee: SRI Sports Limited (Sumitomo Rubber Industries Limited)
• Original Assignee: SRI Sports Limited (Sumitomo Rubber Industries Limited)
• Inventors: Yabu, Masanori
• Granted Patent: US 6,932,719 B2
• Time in Patent Office: Days
• US Class Current: 473/345
• CPC Class Codes: A63B 2209/00 Characteristics of used materials
• CPC Class Codes: A63B 53/0408 characterised by specific dimensions, e.g. thickness
• CPC Class Codes: A63B 53/0416 Heads having an impact surface provided by a face insert
• CPC Class Codes: A63B 53/0437 with special crown configurations
• CPC Class Codes: A63B 53/045 Strengthening ribs
• CPC Class Codes: A63B 53/0466 wood-type

Abstract

A head (5) comprises a body (9), a face (11), a neck (13) and a crown (15). The crown (15) includes an outer plate (21) and an inner plate (23). The outer plate (21) and the inner plate (23) are opposed to each other with a gap provided therebetween. The outer plate (21) and the inner plate (23) are formed of a titanium alloy. The inner plate (23) has a projection (25). The upper end of the projection (25) abuts on the lower surface of the outer plate (21). The projection (25) and the outer plate (21) are bonded to each other by a spot welding method. The outer plate (21) and the inner plate (23) have thicknesses of 0.1 mm to 0.6 mm, respectively. The head (5) has a volume of 300 cm³ or more. A portion between the outer plate (21) and the inner plate (23) maybe filled with a synthetic resin.

Claims

1. A hollow golf club head comprising a body, a face and a crown,

wherein the crown includes an outer plate and an inner plate opposed to each other with a gap provided therebetween, and

the outer plate and the inner plate are partially bonded to each other in a plurality of portions.

2. The golf club head according to claim 1, wherein a portion between the outer plate and the inner plate is filled with a synthetic resin.

3. The golf club head according to claim 1, wherein the outer plate and the inner plate are formed of a titanium alloy.

4. The golf club head according to claim 2, wherein the outer plate and the inner plate are formed of a titanium alloy.

5. The golf club head according to claim 3, wherein the outer plate and the inner plate have thicknesses of 0.1 mm to 0.6 mm, respectively.

6. The golf club head according to claim 4, wherein the outer plate and the inner plate have thicknesses of 0.1 mm to 0.6 mm, respectively.

7. The golf club head according to claim 1, wherein a volume is 300 cm³ or more.

8. A golf club comprising a shaft, a hollow head attached to a front end of the shaft, and a grip in which a rear end of the shaft is fitted,

wherein the head includes a body, a face and a crown,

the crown has an outer plate and an inner plate opposed to each other with a gap provided therebetween, and

the outer plate and the inner plate are partially bonded to each other in a plurality of portions.