Metallic wood club head for golf

• US 5,669,827 A
• Filed: 02/27/1996
• Issued: 09/23/1997
• Est. Priority Date: 02/27/1995
• Status: Expired due to Fees

• Current Assignee: Yamaha Corporation
• Original Assignee: Yamaha Corporation
• Inventors: Nagamoto, Itsushi
• Primary Examiner(s): Passaniti, Sebastiano
• Application Number:
  US08/607,771
• Time in Patent Office: 574 Days
• Field of Search: 473/324, 473/345, 473/332, 473/342, 473/347, 473/350, 473/346, 473/349, 473/334
• US Class Current: 473/345
• 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 53/0466 wood-type
• CPC Class Codes: A63B 60/00 Details or accessories of golf clubs, bats, rackets or the like

Abstract

In construction of a metallic wood golf club head having a shell structure made up of a plurality of shell pieces united together, at least one shell piece is at least locally provided with a laminated construction which includes laminated and intermediate layers made of different materials. Changes in combination of materials and allocation of laminated construction allows free adjustment In weight distribution, thereby achieving high ball shooting characteristics and maneuverability at swing. Fortification of the face is made compatible with enlargement in size of a club head.

Claims

1. A metallic wood club head for golf comprising

a metallic shell structure made up of a plurality of shell pieces united together,

at least one of said shell pieces including, at least locally, a plurality of laminated layers made up of a first material and at least one intermediate layer made up of a second material having a specific gravity different from said first material to thereby position the center of gravity of said shell structure toward the location of said laminated layers.

2. A metallic wood club head as claimed in claim 1 in which said

at least one shell piece is made up of said laminated layers and said intermediate layers.

3. A metallic wood club head as claimed in claim 1 in which said intermediate layer is present at least in a face of said club head to position the center of gravity of said shell structure toward said face.

4. A metallic wood club head as claimed in claim 1 in which said intermediate layer is present at least in a bottom of said club head to position the center of gravity of said shell structure toward said bottom.

5. A metallic wood club head as claimed in claim 1 in which said intermediate layer is present at least in a rear of said club head to position the center of gravity of said shell structure toward said rear.