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:
Jun. 24, 2014
Filed:
Feb. 24, 2012
Applicant:
Anthony Parakka, Rockford, IL (US);
Inventor:
Anthony Parakka, Rockford, IL (US);
Assignee:
Dexter Magnetic Technologies, Inc., Elk Grove Village, IL (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G01B 7/30 (2006.01);
U.S. Cl.
CPC ...
Abstract
A rotary encoder includes a magnet disposed on a rotational axis of the encoder. The magnet is polarized transversely to the rotational axis. A first magnetic sensor is disposed on the rotational axis proximate the on-axis magnet. A magnet ring is disposed rotationally coaxially with the rotational axis and has a selected diametric distance from the axis. The magnet ring has a plurality of alternatingly polarized magnets. A number of pole pairs in the magnet ring is selected to match an angular resolution of the first magnetic sensor. A second magnetic sensor is disposed proximate the magnet ring.