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:
Dec. 26, 1995
Filed:
Nov. 09, 1994
Kenichi Miyamoto, Akashi, JP;
Haruyoshi Minamiguchi, Nishinomiya, JP;
Sumitomo Rubber Industries, Ltd., Kobe, JP;
Abstract
Disclosed is a composite prepreg for producing a tennis racket which is light and tough and superior in flexibility and vibration absorption abilities. The composite prepreg comprises thermosetting resin and reinforcing fibers, wherein the reinforcing fibers are a combination of (a) aromatic polyamide or polyester fibers and (b) carbon fibers and the fibers (a) and (b) are arranged with certain regularity. The present invention also provides a tennis racket comprising a circular frame constituting a ball hitting area and a shaft connecting with the circular frame, the frame and shaft having a plurality of layers structured so that at least one layer is formed from the above mentioned composite prepreg.