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:
May. 01, 2012
Filed:
Apr. 30, 2008
Manabu Taniguchi, Kashihara, JP;
Hirochika Ueyama, Hirakata, JP;
Nobutsuna Motohashi, Katsuragi, JP;
Tadashi Fukao, Kashiba, JP;
Yasutaka Miyagawa, Habikino, JP;
Kenji Ooiso, Kashiwara, JP;
Manabu Taniguchi, Kashihara, JP;
Hirochika Ueyama, Hirakata, JP;
Nobutsuna Motohashi, Katsuragi, JP;
Tadashi Fukao, Kashiba, JP;
Yasutaka Miyagawa, Habikino, JP;
Kenji Ooiso, Kashiwara, JP;
JTEKT Corporation, Osaka-Shi, Osaka, JP;
Abstract
A first spacer, a second tubular member, and a second spacer are externally fitted and fixed to an outer peripheral surface of a nut. The second tubular member is formed by stacking a plurality of silicon steel plates without any gap, and is arranged between the first spacer and the second spacer axially. The outer diameter of an outer peripheral surface of the second tubular member is made larger than the outer diameter of an outer peripheral surface of the first spacer and the outer diameter of an outer peripheral surface of the second spacer. A detection surface of a first displacement detector is made to radially face a contact portion between the second spacer and the second tubular member, while a detection surface of a second displacement detector is made to radially face a contact portion between the first spacer and the second tubular member.