Patent application title: GOLF CLUB SHAFT AND GOLF CLUB
Inventors:
Masaki Wakabayashi (Saitama, JP)
Yoshihito Kogawa (Saitama, JP)
IPC8 Class: AA63B5310FI
USPC Class:
1 1
Class name:
Publication date: 2019-09-12
Patent application number: 20190275391
Abstract:
A metal foil satisfies following conditional equations (1), (2) and (3)
to smoothly increase rigidity in the longitudinal direction of the shaft
main body from a distal end side to a base end side while increasing a
weight of a wound part of the metal foil
0.50<Lmf/Ls (1)
Lmr/Ls<0.90 (2)
0.03<Wm/Ws<0.09 (3) where Lmf: a length from a distal end
position in the longitudinal direction of the shaft main body to a
winding start position of the metal foil, Lmr: a length from the distal
end position in the longitudinal direction of the shaft main body to a
winding end position of the metal foil, Ls: a length of the shaft main
body, Wm: a weight of the metal foil, and Ws: a weight of the shaft main
body.Claims:
Description:
User Contributions:
Comment about this patent or add new information about this topic: