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:
Oct. 28, 2014
Filed:
Apr. 01, 2010
Denis Janiaud, Les Ulis, FR;
Olivier Le Traon, Vauhallan, FR;
Claude Chartier, Massy, FR;
Stève Masson, Le Plessis-Robinson, FR;
Jean Guerard, Juvisy, FR;
Raphaël Levy, Paris, FR;
Marc Pernice, Fresnes, FR;
Denis Janiaud, Les Ulis, FR;
Olivier Le Traon, Vauhallan, FR;
Claude Chartier, Massy, FR;
Stève Masson, Le Plessis-Robinson, FR;
Jean Guerard, Juvisy, FR;
Raphaël Levy, Paris, FR;
Marc Pernice, Fresnes, FR;
ONERA (Office National d'Etudes et de Recherche Aerospatiales), Chatillon, FR;
Abstract
The present disclosure relates to a vibrating element which is planar parallelly to an electrical crystallographic axis of a piezoelectric material such as quartz. The element comprises a beam holding electrodes, a stationary portion rigidly connected to one end of the beam, and a solid portion rigidly connected to the other end of the beam. The structure with facets from the chemical machining of the element has an axis of symmetry parallel to the electrical axis, and the solid portion has a center of gravity on the axis of symmetry. The useful vibration modes of the vibrating element, according to which the solid portion is reciprocatingly rotated about the axis of symmetry and reciprocatingly moved parallel to the plane of the element, are uncoupled. The measurement of an angular speed by a rate gyroscope including said vibrating elements is more precise.