Golf club head

• US 4,438,931 A
• Filed: 09/16/1982
• Issued: 03/27/1984
• Est. Priority Date: 09/16/1982
• Status: Expired due to Fees

• Current Assignee: Kabushiki Kaisha Endo Seisakusho
• Original Assignee: Kabushiki Kaisha Endo Seisakusho
• Inventors: Motomiya, Tetsuo
• Primary Examiner(s): Marlo, George J.
• Application Number:
  US06/418,636
• Time in Patent Office: 558 Days
• Field of Search: 273/167 H, 273/169, 273/173, 273/174, 273/167 R, 273/167 A, 273/167 B, 273/167 C, 273/167 E, 273/167 F, 273/167 G, 273/167 J, 273/167 K, 273/168 , 273/170, 273/171, 273/172, 273/175, 273/80-80.9
• US Class Current: 473/346
• 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 53/045 Strengthening ribs
• CPC Class Codes: A63B 53/0454 Strengthening ribs on the rear surface 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 comprising two or more thin shell sections, for instance a front shell section and a rear shell section, or a face shell section, a top shell section and a body shell section including a bottom section and a side section, are secured together along their edges to form a one-piece shell having a sealed space. A shaft is also secured together with the shell sections when securing these sections. The sealed space is filled with a filler material such as foamed urethane and rubber.

Claims

1. A golf club head comprising

two or more sheet-like shell sections secured together edgewise to form a one-piece sealed hollow shell structure having a shaft mounting section and a bottom section, and

a shaft, the lower end of which is fastened both to said shaft mounting section and to said bottom section.

2. A golf club head according to claim 1, wherein said two or more shell sections are a front shell section and a rear shell section.

3. A golf club head according to claim 1, wherein said two or more shell sections are a face shell section, a top shell section and a body shell section, said body shell section including a bottom shell section and a side shell section.

4. A golf club head accordiing to claim 3, further comprising an L-shaped reinforcing piece between said face shell section and said bottom shell section.

5. A golf club head according to claim 1, wherein said shell sections are made of a metal.

6. A golf club head according to claim 1, wherein said shell structure contains a filler material.

7. A golf club head according to claim 6, wherein said filler material is foamed urethane.

8. A golf club head according to claim 6, wherein said filler material is rubber.

9. A golf club head according to claim 1, wherein said shell sections are made of stainless steel.

10. A golf club head according to claim 1, further comprising a pipe extending between said shaft mounting section and said bottom section, the lower end of said shaft being inserted into said pipe.