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:
Jul. 03, 2012
Filed:
Jul. 29, 2008
Minoru Yoneyama, Tokyo, JP;
Minoru Yoneyama, Tokyo, JP;
Yonex Kabushiki Kaisha, Tokyo, JP;
Abstract
A badminton racket that is strong in respect to impact and twist and that is high in surface stability and a manufacturing method of the badminton racket is provided. A badminton racket includes a frame formed circularly, a shaft joined to the frame, a joint installed reaching inside the frame and the shaft at a joint portion of the frame and the shaft, and an expandable resin placed between the joint and the frame. A badminton racket manufacturing method includes an expandable resin placing process that places an expandable resin that expands when heated on an outer periphery of a portion of a joint, the joint being to be installed to reach inside a frame formed with the resin sheet tube and inside a shaft, the portion being to be installed in the frame.