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.

Date of Patent:
Sep. 14, 2004

Filed:

May. 13, 2003
Applicant:
Inventors:

Corneliu Dragoi, London, CA;

Attila Simofi-Ilyes, London, CA;

Andrew Lakerdas, London, CA;

Dragan Radakovic, London, CA;

Assignee:
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H02K 1/100 ;
U.S. Cl.
CPC ...
H02K 1/100 ;
Abstract

A system and method for protecting a motor from a stall condition includes a brush motor having power brushes and that convey power to windings of the motor, and one sensing brush constructed and arranged to sense a speed of rotation of an armature motor. A controller is constructed and arranged to compare a sensed speed of rotation with a minimum speed value that is indicative of a stall condition. A relay is constructed and arranged to disconnect power to the motor if the sensed speed is below the minimum speed value.


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