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:
Apr. 22, 2003
Filed:
Jan. 16, 2002
Applicant:
Inventor:
Francois Hodar, Orsay, FR;
Assignee:
Sagem SA, Paris, FR;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H02N 2/00 ;
U.S. Cl.
CPC ...
H02N 2/00 ;
Abstract
The invention relates to a piezoelectric motor having a rotor and supply means (S , S ) for supplying an electrical control voltage to at least one piezoelectric element ( ) of the stator. According to the invention, the supply means (S , S ) are arranged to supply an electrical control voltage having a DC component (V ) for shifting towards the expansion state of the piezoelectric elements ( ).