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. 16, 2019
Filed:
Mar. 12, 2014
Tsuneaki Hiraoka, Shizuoka, JP;
Yuichi Asano, Shizuoka, JP;
Yuichiro Kitamura, Shizuoka, JP;
Kiyohiro Suzuki, Shizuoka, JP;
Tsuneaki Hiraoka, Shizuoka, JP;
Yuichi Asano, Shizuoka, JP;
Yuichiro Kitamura, Shizuoka, JP;
Kiyohiro Suzuki, Shizuoka, JP;
NTN CORPORATION, Osaka, JP;
Abstract
A power transmission shaft including a male spline formed in an outer periphery thereof, and a diameter increasing portion formed on a part of a tooth bottom of the male spline, which is located on an opposite side to an axial end of the power transmission shaft. The tooth bottom of the male spline has a substantially constant circumferential width extending up to an axial region of the diameter increasing portion. The diameter increasing portion includes a chamfered portion formed in the axial region of the diameter increasing portion, the chamfered portion connecting the tooth bottom and a tooth flank of the male spline to each other to reduce a tooth groove width.