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. 28, 2019
Filed:
Mar. 26, 2015
Ntn Corporation, Osaka, JP;
Naotsugu Kitayama, Shizuoka, JP;
Shintaro Ishikawa, Shizuoka, JP;
Koji Sato, Shizuoka, JP;
Takahide Saito, Shizuoka, JP;
NTN CORPORATION, Osaka, JP;
Abstract
A rotation transmission device includes an electromagnetic clutch including an armature, a rotor having an outer tubular portion and an inner tubular portion, and an electromagnet. A bearing support tube is provided at the outer end surface of a core supporting an electromagnetic coil of the electromagnet. A bearing is mounted in the bearing support tube so as to be axially fixed in position and not to be pulled out of the bearing support tube. The small-diameter tubular portion is provided at the end of the inner tubular portion of the rotor, and press-fitted in the bearing such that the rotor and the electromagnet form a unit.