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:
Sep. 11, 2001
Filed:
Jan. 19, 2000
Applicant:
Inventors:
Tatsuo Nakajima, Iwata, JP;
Yukihiro Watanabe, Shizuoka-ken, JP;
Kazuhiko Yoshida, Hukuroi, JP;
Hitoshi Kodama, Toyohashi, JP;
Tsuneo Takano, Toyohashi, JP;
Assignee:
Other;
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
F16C 3/00 ;
U.S. Cl.
CPC ...
F16C 3/00 ;
Abstract
A propeller shaft has a metal pipe (,) with a joint element (,) joined at an end thereof. A fiber reinforced plastic layer (,) having a thickness that achieves a flexural rigidity satisfying a required natural bending frequency is formed on an outer circumference of the metal pipe (,) satisfying a static torsional strength required as a propeller shaft. The fiber reinforced plastic layer (,) has an interface strength between the reinforcing fiber and the matrix within a range of 20 to 200 MPa as measured by the microdroplet method.