IP Library › Granted Patent US 7,455,600
Granted Patent B2
US 7,455,600 · App. 11/233,143 · Granted Nov 25, 2008

Golf club head

Assignee: Bridgestone Sports Co., Ltd.
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Quick Facts
Patent No.
US 7,455,600
App. No.
11/233,143
Granted
Nov 25, 2008
Kind
B2
Abstract

A hollow golf club head includes a face portion, a sole portion, a side portion, a crown portion and a hosel portion. A main portion of the crown portion is made of a fiber plastic resin. At least the face portion, a front edge portion of the crown portion continuous with the face portion, and a central portion of the sole portion in a toe-heel direction are made of a metal. A loft angle is in a range of 14° to 25°. A head volume is in a range of 100 cc to 230 cc. A weight of a fiber plastic resin portion of the golf club head is in a range of 6% to 30% of a weight of the golf club head.

Claims (28)

1. A hollow golf club head comprising:

a face portion;

a sole portion;

a side portion;

a crown portion; and

a hosel portion,

wherein:

a main portion of the crown portion is made of a fiber plastic resin,

at least the face portion, a front edge portion of the crown portion continuous with the face portion, and a central portion of the sole portion in a toe-heel direction are made of a metal,

a front edge portion of the side portion and a front edge portion of the sole portion are made of a metal and are continuous with the face portion,

a metal portion of the sole portion extends to a rear face portion of the golf club head,

a first weight member made of a metal is disposed at a rear portion thereof;

a loft angle is in a range of 14° to 25°,

a head volume is in a range of 100 cc to 230 cc, and

a weight of a fiber plastic resin portion of the golf club head is in a range of 6% to 30% of a weight of the golf club head.

2. The golf club head according to claim 1 , wherein a weight of the first weight member is in a range of 10% to 25% of the weight of the golf club head.

3. The golf club head according to claim 1 , wherein a sole-face side of the first weight member is covered with a metal or a resin.

4. The golf club head according to claim 1 , wherein a second weight member is disposed on an inner surface of the metal portion of the sole portion, is in front of the first weight member, and is closer to a toe side than a halfway portion of the sole portion in the toe-heel direction.

5. The golf club head according to claim 1 , wherein a third weight member is disposed inside the fiber plastic resin portion on a toe side or is disposed to be in contact with the fiber plastic resin portion.

6. The golf club head according to claim 5 , wherein the third weight member has a thin-plate shape and is embedded in the fiber plastic resin constituting the side portion on the toe side.

7. The golf club head according to claim 6 , wherein the third weight member is made of a rubber or a synthetic resin containing powder of a metal.

8. The golf club head according to claim 1 , wherein:

the metal portion constituting the golf club head is formed of a face plate made by forging or press molding,

a remaining portion of the golf club head is formed of a forged piece, and

the face plate is fixed to the forged piece.

9. The golf club head according to claim 8 , wherein a thickness of the face plate in a vicinity of a central portion of thereof is larger than that of a peripheral edge portion thereof.

10. The golf club head according to claim 1 , wherein the weight of the golf club head is in a range of 215 g to 240 g.

11. The golf club head according to claim 1 , wherein the metallic portion of the sole portion rises obliquely at the rear face portion of the club head.

Assignments (1)
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Sep 23, 2005
From: IMAMOTO, YASUNORI; YAMAGISHI, HISASHI
To: BRIDGESTONE SPORTS CO., LTD.
Reel/Frame 017030/0121 →
Priority Claims (1)
JP P2004-322510 · Nov 5, 2004 · national
Continuity (1)
Related Publication 20060100032A1 · May 11, 2006