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:
Mar. 20, 2001
Filed:
Aug. 12, 1999
Applicant:
Inventors:
Jean-Thierry Audren, St Rémy les Chevreuse, FR;
Daniel Bezanere, Antony, FR;
François Munier, Montigny le Bretonneux, FR;
Assignee:
SFIM Industries, Massy, FR;
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H01L 4/104 ;
U.S. Cl.
CPC ...
H01L 4/104 ;
Abstract
A vibration motor includes a stator and a rotor and excitation arrangements for deforming the stator in vibratory modes combining tangential vibrations and normal vibrations intended to drive rotation of the rotor. The rotor and the excitation arrangements have dimensions such that the normal and tangential modes have similar resonant frequencies, or even the same resonant frequency, and correspond substantially to the excitation frequency.