Golf club head

• US 5,616,088 A
• Filed: 07/13/1995
• Issued: 04/01/1997
• Est. Priority Date: 07/14/1994
• Status: Expired due to Fees

• Current Assignee: Daiwa Seiko Incorporated
• Original Assignee: Daiwa Seiko Incorporated
• Inventors: Imai, Yasuto, Aizawa, Yuichi
• Primary Examiner(s): Marlo, George J.
• Application Number:
  US08/502,207
• Time in Patent Office: 628 Days
• Field of Search: 273/167 H, 273/172, 446/338, 446/339, 446/336, 446/337, 446/341, 446/345, 446/349, 446/350
• US Class Current: 473/341
• CPC Class Codes: A63B 53/04 Heads
• CPC Class Codes: A63B 53/0433 with special sole configurations
• CPC Class Codes: A63B 53/0437 with special crown configurations
• CPC Class Codes: A63B 53/0462 characterised by tapering thickness of the impact face plate
• CPC Class Codes: A63B 53/047 iron-type
• CPC Class Codes: A63B 60/00 Details or accessories of golf clubs, bats, rackets or the like

Abstract

A golf club head capable of enhancing a moment of inertia and improving a directional stability of a ball. In the golf club head, a flange is formed on a peripheral portion of a back side of a head body, and projects rearwardly from the head body to thereby form a cavity in the back side, and a weight member, made of a material larger in specific gravity than the head body is secured within a recessed formed in outer peripheral surface of the flange. The weight is positioned at a top and a sole side of the head body so as to evenly distribute the weight over the outer peripheral surface of the flange.

Claims

1. A golf club head comprising;

a head body having a face side for hitting a ball, a back side opposite from said face side, a sole side and a top side;

a flange formed on a peripheral portion of said back side of said head body projecting backwardly from said head body, said flange having;

an outer peripheral surface having a width defined by a distance from said front face to said back side, said outer peripheral surface having at least one recess;

an inner peripheral surface defining a cavity in said back side; and

a rear peripheral surface having a thickness defined by a distance from said outer peripheral surface to said inner peripheral surface, said width of said outer peripheral surface being greater than said thickness of said rear peripheral surface;

wherein at least one weight member having a specific weight and being made of a material larger in specific gravity than said head body, said at least one weight member being disposed in said at least one recess of said outer surface of said flange at a top and a sole side of said head body so as to distribute said weight over said outer peripheral surface of said flange.

2. A golf club head according to claim 1, wherein said head body has a generally uniform thickness between said face and back sides except for said peripheral portion from which said flange projects.

3. A golf club according to claim 1, wherein said at least one weight member comprises two weight members, one of said two weight members disposed at said top side of said head body and the other of said two weight members disposed at said sole side of said head body.

4. A golf club head according to claim 1, wherein said weight member is secured to said flange over an area including a top side, a toe side and a sole side of said head body.

5. A golf club according to claim 1, wherein a length of said weight member measured in a direction parallel to said width of said flange is larger than a thickness of said weight member measured in a direction parallel to said thickness of said flange.

6. A golf club head according to claim 1, wherein said flange is formed with a recess elongated from a toe side to a heel side with respect to said head body, and said weight member is securely fitted in said recess so as to be flush with a surface of said flange.

7. A golf club as recited in claim 1, wherein said at least one recess comprises one recess extending around said flange from said top side to said sole side.

8. A golf club as recited in claim 7, wherein said at least one weight member comprises one weight member extending around said flange from said top side to said sole side.

9. A golf club comprising:

a head body having a face side, a back side, and an outer peripheral surface disposed between said face side and said back side, said outer peripheral surface having at least two recess portions one disposed on a top side of said outer peripheral surface and a second recess formed at a sole side of said outer peripheral surface, said head body being made of a material having a specific gravity;

a recess formed in said back side of said head main body having an inner peripheral surface,

a flange portion defined by said inner peripheral surface, said back side, and said outer peripheral surface, wherein a width of said flanged portion measured in a direction extending from said face side to said back side is greater than a thickness of said flange portion measured in a direction from said outer peripheral surface to said inner peripheral surface; and

at least two weight members each having a specific gravity greater than said specific gravity of said head body, one of said at least two weight members being disposed in each of said at least two recess portions so as to lie flush with said outer peripheral surface, said at least two weight members being evenly distributed around said outer peripheral surface.

10. A golf club as recited in claim 9, wherein said at least two weight members is made of a beryllium/copper alloy.