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. 26, 2005
Filed:
Sep. 06, 2002
Christopher P Fell, Plymouth, GB;
Rebecka Eley, Plymouth, GB;
Colin H. J. Fox, Nottingham, GB;
Stewart Mcwilliam, Nottingham, GB;
Christopher P Fell, Plymouth, GB;
Rebecka Eley, Plymouth, GB;
Colin H. J. Fox, Nottingham, GB;
Stewart McWilliam, Nottingham, GB;
BAE Systems plc, London, GB;
Abstract
A three axis rate sensor includes a substantially planar vibratory resonator having a substantially ring or hoop-like structure with inner and outer peripheries extending around a common axis, drive means for causing the resonator to vibrate in a Cos 2θ vibration mode, carrier mode pick-off means for sensing movement of the resonator in response to the applied drive z-axis response mode, pick-off means for detecting movement of the resonator in response to rotation about the z-axis, z-axis response mode drive means for nulling said motion, x-axis response mode pick-off mean for detecting movement of the resonator in response to rotation about the x-axis, x-axis response mode drive means for nulling said motion, y-axis response mode pick-off mean for detecting movement of the resonator in response to rotation about the y-axis, y-axis response mode drive means for nulling said motion, and support means for flexibly supporting the resonator and for allowing the resonator to vibrate relative to the support means in response to the drive means and the applied rotation wherein the support means comprises only L support beams, where L≠2, and K=0, 1, 2 or 3. For example there may be three, five, six or seven support beams.