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:
Dec. 07, 1999
Filed:
Aug. 13, 1998
Denso Corporation, Kariya, JP;
Abstract
In order to improve the magnetic efficiency and the assembling productivity of a coil-rotation type electromagnetic clutch, an electromagnetic coil is located in a ring-shaped recess of a rotor, and friction surfaces facing an armature are formed on both ends of an inner cylindrical portion and an outer cylindrical portion. A friction plate is located in the recess and closer to the armature than the electromagnetic coil. A magnetic shield is located at a place corresponding to the middle of the friction plate in the radial direction. The friction plate is fixed to the ends of the inner cylindrical portion and the outer cylindrical portion by securing protrusions of the friction plate to grooves formed on the inner cylindrical portion and the outer cylindrical portion.