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:
Aug. 20, 2002
Filed:
Aug. 23, 1999
Michel René Marie Jacques Pouvreau, Pontchateau, FR;
Jouan, Saint Herblain, FR;
Abstract
This device for monitoring the speed of rotation of an electric motor ( ) comprises a unit ( ) for controlling the speed of rotation of the motor and a speed limitation unit ( ) linked to the control unit ( ) and including a processor ( ) for comparing between at least one monitoring signal (S′; U ) representative of the speed of rotation of the motor imposed on the latter by the control unit ( ) and a threshold value (V ) corresponding to the maximum value at which the motor ( ) is permitted to operate, and a disconnection unit for at least temporarily disconnecting the motor ( ) from its supply should the threshold value be exceeded. Prior to each startup of the motor ( ), the control unit ( ) carries out a phase of testing the correct operation of the speed limitation unit ( ) by generating a monitoring signal (S′) corresponding to a speed of rotation value greater than the threshold value. clean paragraphs