Golf club

• US 6,030,295 A
• Filed: 07/10/1998
• Issued: 02/29/2000
• Est. Priority Date: 11/20/1997
• Status: Expired due to Fees

• Current Assignee: Kabushiki Kaisha Endo Seisakusho
• Original Assignee: Kabushiki Kaisha Endo Seisakusho
• Inventors: Takeda, Hitoshi
• Primary Examiner(s): Passaniti, Sebastiano
• Application Number:
  US09/113,957
• Time in Patent Office: 599 Days
• Field of Search: 473/345, 473/346, 473/349, 473/350, 473/330, 473/331, 473/332, 473/334, 473/335, 473/336, 473/337, 473/338, 473/339
• 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 53/0416 Heads having an impact surface provided by a face insert
• 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 53/0475 with one or more enclosed cavities
• CPC Class Codes: A63B 60/00 Details or accessories of golf clubs, bats, rackets or the like

Abstract

A cavity back type head golf club which can prevent distortion of the face at the time of striking the ball, and improve attractiveness. A cover 17 is fixed to a head body 16 having a cavity 18 on a rear side, to cover the rear face opening of the cavity 18. The method of fixing involves fixing by pressing. The cover 17 is pressed into a spot facing 21 of the head body 16, to give a dovetail joint. If the cavity 18 is made by machining, then even if machining marks remain, these cannot be seen.

Claims

1. A golf club incorporating a head having a shaft connected to one side and a face on a front,

wherein said head comprises:

a head body formed with a front face, a rear face, a cavity, and an opening through said rear face into said cavity, said cavity containing features to be concealed from view; and

a metal cover completing the rear face and closing the opening into the cavity to conceal the features therein, at least one of said opening and said metal cover having a tapered surface around its periphery such that when said metal cover is pressed into position in the opening, the metal cover is seated in said opening against said tapered surface to secure the cover in place on the head body without the use of adhesives or other separate fasteners.

2. A golf club as claimed in claim 1, wherein said head body includes inner surfaces in said cavity which include cutter marks formed by machining.

3. A golf club as claimed in claim 2, wherein said cavity has an undercut shape with a front face and lower face thereof intersecting at an acute angle.

4. A golf club as claimed in claim 1, wherein said tapered surface includes a reverse taper spot facing which is formed in a peripheral portion of said cavity at the rear face of said head body, said spot facing being defined by a side face and a bottom face, and wherein a taper face corresponding to the side face of said spot facing is formed on a side face of the periphery of said cover, and said cover is pressed into said spot facing of said head body, to thereby join said cover to said head body.

5. A golf club as claimed in claim 4, wherein a sharp protrusion is formed on the bottom face of said spot facing, and said protrusion is cut into said cover.

6. A golf club as claimed in claim 1, wherein said head body forms a spot facing in a peripheral portion of said cavity at the rear face of said head body, and wherein said tapered surface includes a taper face which is formed on the side face of the periphery of said cover, and the spot facing of the head body is made to cover the taper face of said cover by plastic deformation of said head body, to thereby join said cover to said head body.

7. A golf club as claimed in claim 1, wherein a weight is fixed inside the cavity of said head body.

8. A golf club as claimed in claim 1, wherein the density of the material for said cover is less than that of the material for said head body.

9. A golf club as claimed in claim 1, wherein said cover and head body are made from a steel material.

10. A golf club as claimed as in claim 9, wherein a whole face of said head which is formed by said cover and said head body is plated with a metallic material.