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:
Mar. 03, 1992
Filed:
Jun. 22, 1990
Applicant:
Inventor:
Mehran Mehregany, Shaker Heights, OH (US);
Assignee:
Massachusetts Institute of Technology, Cambridge, MA (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H02N / ;
U.S. Cl.
CPC ...
310 82 ; 310 / ; 310309 ;
Abstract
A microfabricated, harmonic side-drive 'wobble' type micromotor exhibiting increased torque output without the need for air levitation or for insulation on the rotor. Stator pieces are arranged about a circular space. In the center of that space is a bearing. An annular rotor in the space, about the bearing, has an inner surface always in rolling contact with the bearing. The outer surface of the rotor is separated from the stator by an air gap.