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:
Jan. 03, 2017
Filed:
Feb. 14, 2014
Dunlop Sports Co. Ltd., Kobe-shi, Hyogo, JP;
Yosuke Yamamoto, Kobe, JP;
DUNLOP SPORTS CO. LTD., Kobe-Shi, JP;
Abstract
In a racket frame, stoppersare each located on a tip side of a narrow diameter portionprotruding from a side of an inner circumferential surfaceof a head. A steel sheetsis fixed on the side of the inner circumferential surfaceopposing the stoppersvia the narrow diameter portion. Weightseach include a magnet sheet. The narrow diameter portionis inserted through notchesandof the weights. The steel sheetsand the magnet sheetare bound with magnetic force. The notchesandof the weightsare locked to a string protecting member. The stoppersprevent the weightsfrom being detached form the head. The weightsare detachably mounted on the head