Golf club head with peripheral balance weights

• US 5,564,705 A
• Filed: 05/27/1994
• Issued: 10/15/1996
• Est. Priority Date: 05/31/1993
• Status: Expired due to Fees

• Current Assignee: K.K. Endo Seisakusho
• Original Assignee: K.K. Endo Seisakusho
• Inventors: Kobayashi, Kenji, Takeda, Hitoshi
• Primary Examiner(s): Grieb, William H.
• Application Number:
  US08/250,431
• Time in Patent Office: 872 Days
• Field of Search: 273/169, 273/167 F, 273/170, 273/171, 273/172
• US Class Current: 473/334
• CPC Class Codes: A63B 2053/0491 with added weights, e.g. changeable, replaceable
• CPC Class Codes: A63B 53/04 Heads
• CPC Class Codes: A63B 53/0416 Heads having an impact surface provided by a face insert
• CPC Class Codes: A63B 53/0433 with special sole configurations
• CPC Class Codes: A63B 53/0458 with non-uniform thickness of the impact face plate
• CPC Class Codes: A63B 53/047 iron-type
• CPC Class Codes: A63B 53/0487 for putters A63B53/065 takes precedence
• CPC Class Codes: A63B 60/00 Details or accessories of golf clubs, bats, rackets or the like
• CPC Class Codes: A63B 60/02 Ballast means for adjusting the centre of mass A63B60/24, A63B60/54 take precedence

Abstract

An iron golf club head which enables the enlargement of so-called a sweet area. One or more balance weights are provided at one or both of peripheral portions both at a face and back side, thereby concentrating the weight distribution of a club head upon the peripheral portion relative to the face to enlarge a sweet area, which is further promoted by forming a cavity in the center of the back of the head body. Further, another weight may be also provided at a sole of the head body, thus lowering the center of gravity of a whole club head and enabling the easier upward-hitting of golf balls.

Claims

1. A golf club head comprising:

a head body having a face, a sole and a back;

one or more balance weights formed of a material denser than that of said head body, said balance weight being linearly disposed along a peripheral portion of the face of said head body.

2. A golf club head according to claim 1, wherein said balance weights are formed annular.

3. A golf club head according to claim 2, wherein said head body is hollow.

4. A golf club head according to claim 2, further comprising:

a concave cavity provided in the back of said head body;

a separate balance weight provided at the sole of said head body.

5. A golf club head according to claim 2, wherein said balance weights are fitted into the peripheral portion of the face by a mortise and tenon joint.

6. A golf club head according to claim 2 further comprising score lines defined on said face, and wherein said balance weights are disposed, surrounding said score lines.

7. A golf club head according to claim 1, wherein said balance weights are each formed semi-annular, said balance weights being fitted into grooves provided at four corners of the peripheral portion of the face.