Golf club head

• US 6,494,790 B1
• Filed: 03/07/2000
• Issued: 12/17/2002
• Est. Priority Date: 01/26/2000
• Status: Expired due to Fees

• Current Assignee: Kasco Corp. (Florida) (Steel Partners Holdings LP)
• Original Assignee: Kasco Corp. (Florida) (Steel Partners Holdings LP)
• Inventors: Sato, Kenichi, Toyota, Masayuki
• Primary Examiner(s): Chiu, Raleigh W.
• Application Number:
  US09/522,791
• Time in Patent Office: 1,015 Days
• Field of Search: 473/324, 473/328, 473/345, 473/348, 473/349, 473/350
• US Class Current: 473/345
• CPC Class Codes: A63B 2053/0491 with added weights, e.g. changeable, replaceable
• CPC Class Codes: A63B 53/04 Heads
• CPC Class Codes: A63B 53/0408 characterised by specific dimensions, e.g. thickness
• CPC Class Codes: A63B 53/0412 Volume
• CPC Class Codes: A63B 53/0433 with special sole configurations
• CPC Class Codes: A63B 53/0466 wood-type
• CPC Class Codes: A63B 60/00 Details or accessories of golf clubs, bats, rackets or the like

Abstract

A golf club head includes a face having a height ranging from 24 to 32 mm. The ratio W/H of the width W of a sole to the height H of the face is in the range from 1.5 to 2.2. The distance Y from a straight line along the central axis of a hosel to the end of a heel is in the range from 11 to 15 mm. The golf club head thus constructed is capable of hitting the ball over a sufficient distance in a good direction.

Claims

1. A golf club head of hollow structure comprising:

a head body having a heel, a toe, and a face extending between said heel and said toe;

a sole connected to said head body and extending rearwardly from said face; and

a hosel extending from said head body;

wherein said face has a height H ranging from 24 to 32 mm, said sole has a width W, a ratio W/H of said width W to said height H is in a range from 1.5 to 2.2, and a distance Y from a straight line along a central axis of said hosel to an end of said heel is in a range from 11 to 15 mm.

2. A golf club head according to claim 1, wherein said face has a length L ranging from 80 to 100 mm.

3. A golf club head according to claim 1, wherein said sole extends from said toe to said heel and has a radius R of curvature of at most 110 mm.

4. A golf club head according to claim 3, wherein said radius R of curvature ranges from 60 to 100 mm.

5. A golf club head according to claim 3, wherein said radius R of curvature ranges from 70 to 90 mm.

6. A golf club head according to claim 1, wherein said sole has a concentrated-weight portion with an increased wall thickness at a rear position spaced from said face, said concentrated-weight portion having a width Z rearwardly from said face, said width Z being at most one-half of the width W of said sole, and said concentrated-weight portion having a weight ranging from 40 to 100 g.

7. A golf club head according to claim 6, wherein said width Z ranges from ⅕

to ½

of said width W.

8. A golf club head according to claim 6, wherein said weight of said concentrated-weight portion ranges from 50 to 80 g.

9. A golf club head according to claim 1, wherein said ratio W/H ranges from 1.7 to 2.0.

10. A golf club head according to claim 1, wherein said distance Y ranges from 12 to 15 mm.

11. A golf club head according to claim 1, wherein said golf club head has a volume of at most 170 cc.

12. A golf club head according to claim 1, wherein said golf club head has a lie angle ranging from 56 to 60°

.

13. A golf club head according to claim 1, wherein said hosel has a shaft receiving hole defined therein and open at said sole.

14. A golf club head according to claim 1, wherein said head body is made of maraging steel containing 12.5 weight % of Cr, 4.5 weight % of Ni, 5.0 weight % of Mo, and 12.5 weight % of Co.

15. A golf club head according to claim 1, wherein said sole 14 is made of SUS 630 stainless steel.

16. A golf club head of hollow structure comprising:

a head body having a heel, a toe, and a face extending between said heel and said toe;

a sole connected to said head body and extending rearwardly from said face; and

a hosel extending from said head body;

wherein said sole has a concentrated-weight portion with an increased wall thickness at a rear position spaced from said face, said concentrated-weight portion has a width Z rearwardly from said face, said width Z is at most one-half of a width W of said sole, and said concentrated-weight portion has a weight ranging from 40 to 100 g.

17. A golf club head according to claim 16, wherein said width Z ranges from ⅕

to ½

of said width W.

18. A golf club head according to claim 16, wherein said weight of said concentrated-weight portion ranges from 50 to 80 g.