Golf club head

• US 5,000,454 A
• Filed: 08/30/1989
• Issued: 03/19/1991
• Est. Priority Date: 08/31/1988
• Status: Expired due to Fees

• Current Assignee: Maruman Golf Kabushikikaisha
• Original Assignee: Maruman Golf Kabushikikaisha
• Inventors: Soda, Takeo
• Primary Examiner(s): Coven, Edward M.
• Assistant Examiner(s): Passaniti, Sebastiano
• Application Number:
  US07/400,910
• Time in Patent Office: 566 Days
• Field of Search: 273/167-175, 273/77 A, 273/DIG. 23
• US Class Current: 473/346
• CPC Class Codes: A63B 2209/02 with reinforcing fibres, e.g. carbon, polyamide fibres
• CPC Class Codes: A63B 53/04 Heads
• CPC Class Codes: A63B 53/0433 with special sole configurations
• CPC Class Codes: A63B 53/0454 Strengthening ribs on the rear surface of the impact face plate
• CPC Class Codes: A63B 53/0458 with non-uniform thickness of the impact face plate
• 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 is disclosed which comprises a body made of a fiber-reinforced plastic having a back side, a club face, a sole and a hosel. A weight member having a nearly circular configuration is located adjacent to the inner circumference of the back side and at a position lower than the vertical centerline of the club face and a reinforcing member is located adjacent to the inside of the club face.

Claims

1. A golf club head comprising:

(a) a body made of a fiber-reinforced plastic, said body including a hollow main body and a hosel, said hollow main body including a back side, a club face for hitting a golf ball, a sole, and an inner circumference, defined within said hollow main body said club face having a vertical center;

(b) a weight means having a shape corresponding to said inner circumference at said back side of said hollow main body, wherein a rearmost portion of said weight means contacts said inner circumference at said back side of said hollow main body at a point lower than said vertical center of said club face; and

(c) a reinforcing means connected to said weight means and positioned adjacent said inner circumference at said club face of said hollow main body, said weight means and said reinforcing means forming a single band which extends along said inner circumference of said hollow main body.

2. A golf club head according to claim 1, wherein said weight means is integrally connected with said reinforcing means.

3. A golf club head according to claim 1, wherein said sole of said hollow main body includes a sole plate made of a corrosion resistant material.

4. A golf club head according to claim 1, wherein said sole of said hollow main body includes a sole plate made of a wear-resistant, low friction material.

5. A golf club head according to claim 1, wherein said reinforcing means is a plate positioned adjacent said inner circumference at said club face.

6. A golf club head according to claim 5, wherein said weight means is coupled to a vertical center portion of said reinforcing means.

7. A golf club head according to claim 5, wherein said weight means is coupled to a bottom portion of said reinforcing means.

8. A golf club head according to claim 1, wherein said reinforcing means includes a plurality of rods positioned adjacent said inner circumference at said club face.

9. A golf club head according to claim 5, wherein said weight means includes a pillar means extending from said back side to said plate.