US Patent 7168289 Method and devices of measuring physical quantities
Patent 7168289 was granted and assigned to NGK Insulators on January, 2007 by the United States Patent and Trademark Office.
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The present invention provides a method of measuring a physical quantity using a vibrator. The vibrator has a plurality of driving vibration arms, a plurality of detection vibration arms, films for adjusting a weight provided on the driving vibration arms, and detecting electrodes provided on the detection vibration arms. A driving vibration is excited in the vibrator, and output signals are output from the detecting means based on a detection vibration excited in the vibrator responsive to the physical quantity. The weight of each of the films is adjusted based on a comparison of the output signals from the detection vibration arms.
US Patent 07168289 Method and devices of measuring physical quantities US Patent 7168289 Method and devices of measuring physical quantities
US Patent 07168289 Method and devices of measuring physical quantities
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