Title:
IMPROVED IRON TYPE GOLF CLUB HEAD
Document Type and Number:
Japanese Patent JP2022033001
Kind Code:
A
Abstract:
To provide an iron golf club head achieving improved performance.SOLUTION: Improved performance of an iron golf club is achieved by a specific effective stiffness area ratio between the boundary of the iron golf club head and the face of the iron golf club head. More specifically, the present invention discloses an iron golf club head, the iron golf club head incorporating a variable face profile into specific iron golf club head chassis resulting in an effective stiffness area ratio of between about 4.5 to 5.5 and a coefficient of restitution value as a function of the above effective stiffness area ratio.SELECTED DRAWING: Figure 6
Inventors:
GOLDEN CHARLES E
GRANT M MARTENS
GENTRY FERGUSON
RYAN J A RITCHIE
MARNI D INES
RICHARD L CLEGHORN
GERY M ZIMMERMAN
GRANT M MARTENS
GENTRY FERGUSON
RYAN J A RITCHIE
MARNI D INES
RICHARD L CLEGHORN
GERY M ZIMMERMAN
Application Number:
JP2021128644A
Publication Date:
February 25, 2022
Filing Date:
August 05, 2021
Export Citation:
Assignee:
ACUSHNET CO
International Classes:
A63B53/04
Attorney, Agent or Firm:
Toshio Sawada
Masaaki Miyata
Eiji Yamada
Masaaki Miyata
Eiji Yamada