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. 25, 2002
Filed:
Aug. 09, 2000
Minoru Kawada, Nishi-biwajima-machi, JP;
Ryuhei Tanigaki, Nishi-biwajima-machi, JP;
Mitsubishi Heavy Industries, Ltd., Tokyo, JP;
Abstract
An electromagnetic clutch comprises a clutch rotor having a flange portion, an armature opposed to the flange portion, and a ring exciting coil. The ring exciting coil generates a magnetic flux for attracting the armature to the flange portion when it is supplied with current. The flange portion is formed having outside slits and inside slits. A magnetic pole portion on the outer peripheral side and a magnetic pole portion on the inner peripheral side are formed between the outside slits and the inside slits. A step portion and a concave surface continuous with the step portion are formed in a region corresponding to the magnetic pole portion on the outer peripheral side. The step portion serves to restrain the magnetic pole portion from touching the armature when the magnetic flux is formed.