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. 01, 1991
Filed:
Oct. 30, 1990
David C Gustin, Rockton, IL (US);
Robert L Stibbe, Janesville, WI (US);
Paul A Larson, Belvidere, IL (US);
Dana Corporation, Toledo, OH (US);
Abstract
An electromagnetic clutch includes a fixed field shell with a multiple turn coil, a rotor rotatable with and slidable along a splined input shaft, and a rotatable armature disposed in axially opposing relation with the rotor. An internally splined locking ring is coupled to rotate with the armature and is supported to rotate with and slide along a splined output shaft. When the coil is first energized, the armature is drawn into engagement with the rotor by magnetic flux and acts through the locking ring to cause the output shaft to rotate at substantially the same speed as the input shaft. Thereafter, the magnetic flux causes the rotor and the armature to move axially as a unit toward the field shell so as to shift the locking ring into meshing engagement with the input shaft and thereby couple the output shaft for rotation with the input shaft via the splined coupling.