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:
Oct. 15, 2002
Filed:
Jun. 16, 1999
Applicant:
Inventor:
Tatsuo Nakajima, Iwata, JP;
Assignee:
NTN Corporation, Osaka-fu, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
F16C 3/02 ;
U.S. Cl.
CPC ...
F16C 3/02 ;
Abstract
A power transmission shaft is constructed by winding a membrane, film, foil or thin sheet in layers and comprising a longitudinal middle portion composed of FRP layers alone, a transitional portion disposed between the middle portion and each endportion and composed of a composite layer of FRP layers and metal layers, the end portions being composed of metal layers alone. The joining, as by welding, pinning, press-fitting, or friction welding, of metal ports, such as joint elements, is effected at the ends or the ends and transitional portions.