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:
Feb. 03, 2004
Filed:
May. 02, 2002
ETA SA Fabriques d'Ebauches, Grenchen, CH;
Abstract
A time base having a resonator ( ) and an integrated electronic circuit ( ) for driving the resonator into oscillation and for producing, in response to this oscillation, a signal having a determined frequency. The resonator is an integrated micromechanical ring resonator ( ) supported above a substrate ( ) and adapted to oscillate around an axis of rotation (O) substantially perpendicular to the substrate. The ring resonator has a central post ( ) extending from the substrate along the axis of rotation, and a free-standing oscillating structure ( ) including an outer ring ( ) coaxial with the axis of rotation, and a plurality of spring elements ( ) disposed symmetrically around the central post and connecting the outer ring to the central post.