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:
Sep. 30, 2008
Filed:
Sep. 30, 2004
Applicants:
Haroon I. Yunus, New Hartford, CT (US);
Russel H. Marvin, Goshen, CT (US);
Bumsuk Won, Avon, CT (US);
Inventors:
Haroon I. Yunus, New Hartford, CT (US);
Russel H. Marvin, Goshen, CT (US);
Bumsuk Won, Avon, CT (US);
Assignee:
The Berquist Torrington Company, Chanhassen, MN (US);
Primary Examiner:
Int. Cl.
CPC ...
H02P 6/00 (2006.01);
U.S. Cl.
CPC ...
Abstract
A method and circuit for detecting the position of the movable element of an electrically commutated machine. The method and apparatus allow detection of the back electromagnetic force (BEMF) waveform with all legs of the machine energized by mathematically removing the applied voltage from the measured voltage across the phases.