The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Apr. 10, 2001
Filed:
Feb. 18, 1999
Applicant:
Inventors:
Masatake Kawaguchi, Kanagawa, JP;
Makoto Watari, Kanagawa, JP;
Katsumi Shimohira, Kanagawa, JP;
Atsushi Yagita, Kanagawa, JP;
Assignee:
Nippon Shaft Co., Ltd., , JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
A63B 5/310 ; A63B 5/312 ; G01N 3/22 ; G01N 3/20 ;
U.S. Cl.
CPC ...
A63B 5/310 ; A63B 5/312 ; G01N 3/22 ; G01N 3/20 ;
Abstract
A golf club shaft includes a first strain gauge attached to a first side of the shaft facing the striking direction, a second strain gauge attached to a second side of the shaft facing the address direction at right-angles to the striking direction, and a third strain gauge which is capable of measuring the twist of the shaft. Detection signals from the strain gauges are used to classify a shaft into four types according to the swing type of a golfer in accordance with at least torque or kick point.