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:
Jan. 22, 2019
Filed:
May. 28, 2015
Ntn Corporation, Osaka, JP;
Ogura Clutch Co., Ltd., Gunma, JP;
Takahide Saito, Shizuoka, JP;
Koji Sato, Shizuoka, JP;
Naotsugu Kitayama, Shizuoka, JP;
Yoshihiro Kurosu, Gunma, JP;
Haruhiko Ushirode, Gunma, JP;
NTN CORPORATION, Osaka, JP;
OGURA CLUTCH CO., LTD., Gunma, JP;
Abstract
An electromagnetic connection device includes an armature (), a rotor (), an electromagnetic coil (), and a spring member () that biases the armature () in a direction in which the armature () is separated from the rotor (). The electromagnetic connection device includes a damping member () mounted on the armature () so as to face the rotor (). The armature () includes a flat portion () and a tubular portion (). The damping member () includes a damper cover () including an abutment portion along the flat portion () and an engaging portion along the tubular portion (), and an elastic member () sandwiched between the abutment portion and the flat portion (). The damper cover () is put on the armature () from the side of the rotor () and movably held on the tubular portion (). The flat portion () includes a concave portion () configured to store the abutment portion of the damper cover (). There is provided an electromagnetic connection device capable of obtaining a high damping effect and raising the productivity while preventing the elastic member from being exposed to a friction surface.