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:
Dec. 15, 1998
Filed:
Oct. 15, 1996
Abstract
A vibration gyroscope 10 includes a vibrator 12. The vibrator 12 has a vibration member 14 formed in a regular triangular prism shape and piezoelectric elements 16a, 16b and 16c. Two of the piezoelectric elements 16a and 16b are polarized in the direction from the outside to the vibration member 14, and the other piezoelectric element 16c is polarized in the direction from the vibration member 14 to the outside. An oscillation circuit 28 sends signals to the piezoelectric elements 16a to 16c and a signal output from the vibration member 14 is fed back. Two of the piezoelectric elements 16a and 16b are connected to a differential circuit 30. The differential circuit 30 is connected to a synchronous detection circuit 32 and then connected to a smoothing circuit 34 and a DC amplifier 36 in series.