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:
Aug. 11, 1992
Filed:
Apr. 09, 1991
Zdenek Cerny, Brampton, CA;
Tesma International Inc., Concord, CA;
Abstract
An electromagnetic clutch comprising a rotor rotatable about a rotational axis, an armature operable to be magnetically coupled with the rotor for rotation therewith, and a fixed annular magnetic coil energizable to magnetially couple the rotor and armature. The rotor includes an inner annular portion, an annular clutch portion extending outwardly from an end of the inner annular portion and an outer annular portion extending from an outer end of the clutch portion. The annular clutch portion includes a coupling surface and a series of arcuate slots extending from the coupling surface through the annular clutch portion. The series of arcuate slots includes (1) a plurality of radially inner annular spaced arcuate slots which extend through the annular clutch portion from a first position at the coupling surface side thereof to a second position at an opposite side thereof in which the second position is disposed radially outwardly of the first position, and (2) a plurality of radially outer annularly spaced arcuate slots which extend in one direction inwardly from the couplingn surface side of the annular clutch portion at a first position and extend outwardly to an opposite side of the annular clutch portion in a different direction at a second position spaced radially inwardly of the first position.