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:
Nov. 28, 2000
Filed:
Jan. 21, 1999
Takehiro Watarai, Mie-ken, JP;
Denso Corporation, Aichi-ken, JP;
Abstract
An angular rate sensor is provided which measures the angular rate of motion applied to a moving object and which features the structure minimizing electrical noise of an output. The angular rate sensor includes generally a first tuning fork, a second tuning fork, and a torsion beam. The first tuning fork includes two tines and serves as a drive oscillator and a measuring oscillator. The second tuning fork includes two tines which extend in the same direction as the first and second tines partially surrounding the first tuning fork and which connect at ends thereof with ends of the tines of the first tuning fork through a stem extending substantially perpendicular to the tines of the first and second tuning forks. The torsion beam extends substantially along the center line of the sensor and supports the stem on a base. The width of the torsion beam is smaller than an overall width of the first tuning fork, thereby minimizing leakage of energy of self-excited oscillation from the drive oscillator to the measuring oscillator and achieving effective transmission of vibratory energy to the measuring oscillator which is produced by the Coriolis force resulting from application of angular motion to the sensor.