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:
Oct. 31, 1978
Filed:
Oct. 25, 1977
George T Bennett, Kettering, OH (US);
Byron L Brucken, Miamisburg, OH (US);
General Motors Corporation, Detroit, MI (US);
Abstract
The electromagnetic clutch illustrated includes an electromagnetic coil assembly, an armature plate, and a pulley assembly having cylindrical end portions with an intermediate groove portion, and a hub portion, all of which form part of a 4-pole magnetic flux path. A non-magnetic ring member is mounted in support relationship between the groove portion and the pulley hub. A clutch rotor is secured to an end of the pulley hub adjacent the armature plate and extends radially outwardly therefrom so as to provide a uninterrupted circular air space with the cylindrical end portion adjacent the armature plate, such that no shorting of the lines of flux can occur from the end portion to the clutch rotor, providing a faster and stronger attraction of the armature plate when the electromagnetic coil is energized.