Hollow metal golf club head and club incorporating it

• US 4,417,731 A
• Filed: 06/16/1982
• Issued: 11/29/1983
• Est. Priority Date: 06/16/1982
• Status: Expired due to Fees

• Current Assignee: Kunio Yamada
• Original Assignee: Kunio Yamada
• Inventors: Yamada, Kunio
• Primary Examiner(s): Marlo, George J.
• Application Number:
  US06/389,081
• Time in Patent Office: 531 Days
• Field of Search: 273/167 H, 273/167 E, 273/80.2-80.7
• US Class Current: 473/309
• CPC Class Codes: A63B 2225/01 Special aerodynamic features, e.g. airfoil shapes, wings or air passages
• CPC Class Codes: A63B 53/02 Joint structures between the head and the shaft
• CPC Class Codes: A63B 60/02 Ballast means for adjusting the centre of mass A63B60/24, A63B60/54 take precedence
• CPC Class Codes: A63B 60/50 with through-holes A63B60/18 takes precedence; for stringing purposes A63B49/00

Abstract

A hollow metal golf club having a structure in which the club head has a body portion and a neck portion for attachment of a golf club handle shaft. The club head is similar in shape and size to conventional wood club heads. A metal cylinder has a socket to receive a shaft. It is supported inside the neck portion and body portion. The handle shaft is mounted by inserting it in the socket of the cylinder and fastening it there by suitable means. The bottom of the hollow club head has an opening covered by a removable plate.

Claims

1. A golf club head comprising:

a hollow metal body portion having an external shape substantially similar to a conventional "wood", said head further including a hollow neck portion extending from said body portion, cylindrical socket means extending from said body portion, cylindrical socket means extending into said portions, a plurality of web means attached to and interconnecting said socket means and said neck portion to support said socket means, with a spacing extending substantially around said socket means, said socket means having an aperture aligned with said neck portion to receive a shaft.

2. A golf club head according to claim 1 in which said club head has a face, said web means extending substantially parallel to said face.

3. A golf club head according to claim 1 in which said club head is molded from stainless steel.

4. A golf club head according to claim 1 in which said club head has a face, said face being substantially thicker than the rest of said club head.

5. A golf club head according to claim 4 including a plurality of stiffening ribs behind said face for reinforcing and strengthening said face.

6. A golf club head according to claim 4 in which said club face has an upper portion and lower portion;

said lower portion having a thickness greater than the upper portion.

7. A golf club head according to claim 1 in which the bottom of said club head is open whereby adjustments may be made to the weight and center of gravity of said club head by adding filler.

8. A golf club head according to claim 7 including a detachable plate for closing the bottom portion of said club head.

9. A golf club head according to claim 1 in which said web means also interconnects said socket member to said body portion.

10. A golf club head according to claim 1 in which said web means are plate-like.

11. In combination, a golf club head according to claim 1, and a shaft having a diameter approximately equal to the diameter of said aperture, inserted into and retained in said aperture.

12. A combination according to claim 11 in which said web means are plate-like, and also interconnect said socket memeber and said body portion.