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:
Nov. 24, 1981
Filed:
Jan. 03, 1979
Isamu Shirai, Isesaki, JP;
Sankyo Electric Company Limited, Isesaki, JP;
Abstract
An electromagnetic clutch for selectively transmitting the rotation of a magnetic pulley to a rotatable shaft by the magnetic attraction of an annular magnetic armature plate elastically supported on the shaft to an axial end of the pulley produced by the energization of an electromagnet stationarily disposed in a radial hollow portion of the pulley. A radial inner wall defining the hollow portion of the pulley is partially thicker in the radial thickness at an axial extent between the axial end of the pulley and the electromagnet, thereby to decrease the magnetic resistance through the axial extent and to strengthen the magnetic attraction force between the pulley and the armature without increasing the outer diameter of the clutch. A magnetic ring may be partially fitted to the inner wall to substantially increase the radial thickness in place of the partial increase of the radial thickness of the inner wall itself.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile