Patent ID: 6140739
Filing Date: 2000-10-31
Classification: G01C

Abstract:
An oscillatory gyroscope comprising:an elastic metal body in the form of a rectangular column having first to fourth surfaces, the first and third surfaces being opposite, the second and fourth surfaces being opposite, the elastic metal body including a distal portion having a distal through hole extending from the second surface to the fourth surface and a proximal portion having a second through hole extending from the first surface to the third surface;two first ferroelectric substance films provided on the first and third surfaces in the distal portion;two second ferroelectric substance films provided over the second and fourth surfaces in the proximal portion;first and second electrodes provided on each of the first ferroelectric substance films, wherein voltages of reverse polarities are applied to the first and second electrodes; andthird and fourth electrodes provided on the respective second ferroelectric substance films,wherein the positions of the first and second electrodes on the first surface are reversed with respect to those of the third surface.