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:
Jun. 21, 2011
Filed:
Oct. 06, 2006
Junji Ando, Kariya, JP;
Yoshiaki Senga, Nagoya, JP;
Tomoo Suzuki, Chita-gun, JP;
Kazunori Aoki, Toyoake, JP;
Toshiyuki Saito, Toyoake, JP;
Hirofumi Kuwabara, Nagoya, JP;
Junji Ando, Kariya, JP;
Yoshiaki Senga, Nagoya, JP;
Tomoo Suzuki, Chita-gun, JP;
Kazunori Aoki, Toyoake, JP;
Toshiyuki Saito, Toyoake, JP;
Hirofumi Kuwabara, Nagoya, JP;
JTEKT Corporation, Osaka-shi, JP;
Abstract
A spline shaft that can suppress occurrence of stick slip by measures other than just simply making the surface roughness smaller. The spline shaft includes a first shaft with an outer-peripheral spline formed, and a second shaft with an inner-peripheral spline, which engages with the outer-peripheral spline peripherally and that is made slidable axially, formed. And, at least either one of the outer-peripheral spline and the inner-peripheral spline includes a substrate whose surface is formed to a predetermined surface roughness, and an amorphous carbon-system hard thin film, which coats and forms the surface of substrate.