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:
Nov. 07, 2006
Filed:
Oct. 06, 2004
Applicant:
Takeshi Ashino, Hyogo, JP;
Inventor:
Takeshi Ashino, Hyogo, JP;
Assignee:
SRI Sports Limited, Kobe, JP;
Primary Examiner:
Int. Cl.
CPC ...
A63B 49/10 (2006.01);
U.S. Cl.
CPC ...
Abstract
A racket frame including a first laminate composed of a plurality of first prepregs consisting of fiber reinforced resin and a second prepreg, consisting of fiber reinforced resin, which is layered on the first laminate. The first laminate has a loss factor (=tan δ) set to not less than 0.005 nor more than 0.02, when the loss factor is measured at a temperature of 10° C. and a frequency of 10 Hz. The second prepreg has a loss factor (=tan δ) set to not less than 0.10 nor more than 0.50, when the loss factor is measured at a temperature of 10° C. and a frequency of 10 Hz.