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. 30, 2024
Filed:
Mar. 08, 2021
Hitachi Astemo, Ltd., Ibaraki, JP;
HITACHI ASTEMO, LTD., Ibaraki, JP;
Abstract
A tubular body of a power transmission shaft made of fiber-reinforced plastic is provided with a cylindrical main body portion, and a second connection portion continuous with an end portion of the main body portion and to which a stab shaft is joined. The main body portion is formed with a weak portion which fails when a load input in the direction of an axial line exceeds a predetermined value. A linear rupture portion is formed on an outer peripheral surface of the weak portion. In the present configuration, cost reduction and weight reduction of the tubular body are made possible, and the tubular body fails infallibly when a predetermined load is input to the tubular body in the direction of the axial line.