GOLF CLUB SHAFT AND GOLF CLUB

PROBLEM TO BE SOLVED: To increase a carry without deteriorating feeling in ball hitting.SOLUTION: A golf club shaft 3, made of a fiber-reinforced resin containing a reinforced fiber and resin, has a shaft weight of not less than 30 g and not more than 55g, wherein the ratio LG/LS of distance LG to a...

Full description

Saved in:
Bibliographic Details
Main Authors HASEGAWA HIROSHI, NAKANO TAKATSUGU
Format Patent
LanguageEnglish
Published 09.05.2013
Subjects
AMUSEMENTS
APPARATUS FOR PHYSICAL TRAINING, GYMNASTICS, SWIMMING,CLIMBING, OR FENCING
BALL GAMES
GAMES
HUMAN NECESSITIES
SPORTS
TRAINING EQUIPMENT
Online AccessGet full text

Cover

More Information
Summary:PROBLEM TO BE SOLVED: To increase a carry without deteriorating feeling in ball hitting.SOLUTION: A golf club shaft 3, made of a fiber-reinforced resin containing a reinforced fiber and resin, has a shaft weight of not less than 30 g and not more than 55g, wherein the ratio LG/LS of distance LG to a center of gravity G of the shaft from a front edge 3a of the shaft 3, namely a side to which a golf club head 2 is attached, to the full length LS of the shaft, is at not less than 0.54 and not more than 0.65. The reinforced fiber contained in a rear-edge area B, namely an area of 300 mm from a rear edge 3b of the shaft 3 to a side of the front edge 3a of the shaft 3, comprises a low-elasticity fiber having a tensile elastic modulus of not less than 5 t/mmand not more than 20 t/mm, and a high-elasticity fiber having a tensile elastic modulus of more than 20 t/mmand not more than 50 t/mm. In the reinforced fiber of the rear edge area, the low-elasticity fiber and the high-elasticity fiber are contained by 20 to 30 wt.% and 80 to 70 wt.%, respectively, and torque ranges from not less than 5.0 degrees to not more than 8.0 degrees.
Bibliography:Application Number: JP20120277256