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. 25, 2018
Filed:
Dec. 15, 2014
Jtekt Corporation, Osaka-shi, Osaka, JP;
Naoto Miyawaki, Yamatokoriyama, JP;
Kenji Higashi, Tenri, JP;
JTEKT CORPORATION, Osaka-shi, JP;
Abstract
A spline telescoping shaft includes an inner shaft including a male spline and a tubular outer shaft including a female spline. A resin film is provided on a surface of at least either of both the splines. An addendum modification coefficient e, the number of teeth Z, a module m, a reference pitch circle diameter PCD, a tip circle diameter dand a root circle diameter dof the male spline and a tip circle diameter Dand a root circle diameter Dof the female spline have relations expressed by expressions (1) to (8).(+4)>(+2)  (1),(−1)  (2),(+4)>(+2)  (3),(−1)  (4),  (5),  (6),  (7),and0.4<<1.1  (8)