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. 19, 2002
Filed:
Jul. 28, 2000
Stanley F. Wyse, Encino, CA (US);
Litton Systems, Inc., Woodland Hills, CA (US);
Abstract
A sensor for measuring rotation rate with respect to three axes and linear acceleration with respect to two axes. Electromagnets comprising cores of high magnetic permeability and windings are fixed to structures that protrude inwardly from outer frames of upper and lower rotor assemblies. An element of high magnetic permeability is fixed to the facing surface of a rotor arm to create electromagnetic drives for counteroscillation of upper and lower sets of rotor arms. Accelerometers are horizontally aligned and fixed to the top surfaces of preselected rotor arms of the upper rotor assembly and to the bottom surfaces of aligned rotor arms of the lower set of rotor arms for measuring rotation rate with respect the x and y axes and linear acceleration with respect to the z axis. The two sets of rotor arms are connected by a torsion bar. A pair of accelerometers is each vertically aligned and fixed to the ends of aligned rotor arms of a rotor assembly for measuring rotation rate with respect to the z axis and linear acceleration with respect to the y axis. Each rotor assembly, comprising a central hub from which a set of four rotor arms radiate and a surrounding outer frame connected to the hub through a plurality of vanes, is formed of a single integral piece.