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:
Mar. 17, 2015
Filed:
May. 17, 2012
Hiroshi Hasegawa, Kobe, JP;
Takashi Nakano, Kobe, JP;
Yasushi Sugimoto, Kobe, JP;
SRI Sports Limited, Kobe, JP;
Abstract
In a shaft, a shaft full length is defined as Ls, and a distance between a tip end of the shaft and a center of gravity G of the shaft is defined as Lg. Lg/Ls is 0.52 or greater and 0.65 or less. A shaft weight is equal to or less than 52 g. Preferably, the shafthas butt partial layers aand a. When a point separated by 250 mm from a butt end Bt is defined as P; a range from the point Pto the butt end Bt is defined as a specific butt range; the total weight of the butt partial layers aand aexisting in the specific butt range is Wa gram; and a weight of the shaft in the specific butt range is defined as Wb gram, Wa/Wb is preferably equal to or greater than 0.4.