Title:
GOLF CLUB HEAD
Document Type and Number:
Japanese Patent JP2949691
Kind Code:
B2
Abstract:
PURPOSE: To increase the inertia moment of the golf club head of a wood type and to improve the directivity of a hit ball by forming the sole part, crown part and main body part of the head respectively of separate materials and forming the main body of a material having the largest sp.gr.
CONSTITUTION: The sole part 2, crown part 3 and main body part 4 constituting the other parts of the golf club head which internally has a hollow part 1 or is packed with a packing material in this hollow part 1 are respectively formed of the separate materials. At this time, the main body part 4 is formed of the material having the largest sp.gr. The main body part 4 may be increased in the thickness on its lateral peripheral surface to distribute the weight on the periphery. A stainless steel, titanium alloy or copper alloy, magnesium alloy, etc., are used as the material to form this main body part 4. The crown part 3 is formed of the material having the smallest sp.gr., for example, a synthetic resin material and the sole part 2 is formed of aluminum, its alloy, etc.
Inventors:
EZAKI HIROSHI
HIRUTA MASAOMI
SHIMAZAKI HIRATO
MYAJIMA TETSUYA
WATANABE SHIGERU
HIRUTA MASAOMI
SHIMAZAKI HIRATO
MYAJIMA TETSUYA
WATANABE SHIGERU
Application Number:
JP28443093A
Publication Date:
September 20, 1999
Filing Date:
October 19, 1993
Export Citation:
Assignee:
BURIJISUTON SUHOOTSU KK
International Classes:
A63B53/04; A63B53/06; A63B102/32; (IPC1-7): A63B53/04; A63B53/06
Domestic Patent References:
| JP221882A | ||||
| JP557034A | ||||
| JP475567U |
Attorney, Agent or Firm:
Takeo Masuda
Previous Patent: CUT PLATE SEPARATION METHOD AND SEPARATION DEVICE
Next Patent: WIPER FOR VACUUM CHUCK OF STEPPER
Next Patent: WIPER FOR VACUUM CHUCK OF STEPPER