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:
Mar. 11, 1986
Filed:
Aug. 09, 1983
Takatoshi Koitabashi, Annaka, JP;
Sanden Corporation, , JP;
Abstract
An electromagnetic clutch is disclosed which includes a pulley and an electromagnetic coil. A hub is secured to a drive shaft and has a radially extending flange portion which faces the pulley at a predetermined axial gap. An armature plate is disposed in the axial gap between the pulley and the radially extending flange portion of hub. The armature plate is elastically connected to the flange portion of the hub by a plurality of U-shaped spring members. Each spring member is provided with a pair of fittings and a pair of spaced, opposing axial flanges extending from the end portion of the fittings. An elastic member is located in the gap between the axial flanges. The impact force on the drive shaft when the electromagnetic clutch is first actuated is reduced by the compressive deformation of the elastic members. The impact sound is also reduced by the twist deformation of the elastic members.