Golf club head

• US 20070149313A1
• Filed: 05/18/2006
• Published: 06/28/2007
• Est. Priority Date: 12/26/2005
• Status: Abandoned Application

• Current Assignee: Bridgestone Sports Co Limited (Bridgestone Corporation)
• Original Assignee: Bridgestone Sports Co Limited (Bridgestone Corporation)
• Inventors: Matsunaga, Hideo, Shimazaki, Hideo, Ban, Wataru
• Application Number:
  US11/435,989
• Publication Number:
  US 20070149313A1
• Time in Patent Office: Days
• US Class Current: 473/332
• CPC Class Codes: A63B 53/0416 Heads having an impact surface provided by a face insert
• CPC Class Codes: A63B 53/0433 with special sole configurations
• CPC Class Codes: A63B 53/0437 with special crown configurations
• CPC Class Codes: A63B 53/0462 characterised by tapering thickness of the impact face plate
• CPC Class Codes: A63B 53/0466 wood-type
• CPC Class Codes: A63B 60/54 with means for damping vibrations

Abstract

This invention provides a hollow golf club head having a face portion, a crown portion, a sole portion, and a side portion, and comprising a viscoelastic body to be mounted in at least one of the face portion, crown portion, sole portion, and side portion. The viscoelastic body is mounted in a part of a portion where the viscoelastic body is to be mounted, the part corresponding to an antinode of a primary vibration mode.

Claims

1. A hollow golf club head having a face portion, a crown portion, a sole portion, and a side portion, said head comprising a viscoelastic body to be mounted in at least one of said face portion, said crown portion, said sole portion, and said side portion,

wherein said viscoelastic body is mounted in a part of a portion where said viscoelastic body is to be mounted, said part corresponding to an antinode of a primary vibration mode.

2. The head according to claim 1, wherein said part corresponding to the antinode of the primary vibration mode is specified by subjecting a model of the golf club head to mode analysis by a computer.

3. The head according to claim 1, further comprising a plurality of viscoelastic bodies which are to be mounted in a plurality of portions of said face portion, said crown portion, said sole portion, and said side portion,

wherein any one of said viscoelastic bodies is to be mounted in a part of said portion where said viscoelastic body is to be mounted, said part corresponding to an antinode of the primary vibration mode.

4. The head according to claim 1, wherein a peak value of a loss coefficient of said viscoelastic body is not less than 0.3.