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. 21, 2004
Filed:
Sep. 17, 2002
Applicant:
Inventor:
Serge Bruno, Marnaz, FR;
Assignee:
Somfy, Cluses, FR;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H02H 5/04 ;
U.S. Cl.
CPC ...
H02H 5/04 ;
Abstract
The invention concerns a device for stopping the motor when the load on the motor exceeds a predetermined value. It comprises means (D , DZ, R , R ) transforming the voltage variation at the phase-shifting capacitor terminals corresponding to a specific torque variation into a selected voltage variation whatever the maximum torque developed, means comparing (T ) the transformed voltage (UB) with a reference voltage and means for stopping the motor when the transformed voltage is less than the reference voltage.