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:
May. 13, 2014
Filed:
Sep. 30, 2011
Applicant:
Harry A. Eaton, Columbia, MD (US);
Inventor:
Harry A. Eaton, Columbia, MD (US);
Assignee:
The Johns Hopkins University, Baltimore, MD (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G01R 31/02 (2006.01);
U.S. Cl.
CPC ...
Abstract
A method is provided for monitoring a motor having a stator, a rotor and a detector. The stator can receive a driving signal to produce a first magnetic field. The rotor can rotate in a circle relative to the stator. The rotor has a magnetic portion that can emit a second magnetic field in a radial direction. The detector can output a detection signal based on the position of the rotor.