Angular speed measuring transducer
US7168319B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 19, 2005 |
| Grant date | Jan 30, 2007 |
| Priority date | — |
| Expiry date | Dec 19, 2025 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01C19/5607
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A transducer for measuring an angular velocity formed by a single piezoelectric tuning fork (21) that rotates at said angular velocity, including first (23) and second (24) vibrating legs extending from a base (22), excitation electrodes (25a, 25b, 26a, 26b) arranged on the excitation leg (23), detection electrodes (27a, 27b, 28a, 28b), arranged on the detection leg (24), characterized in that the detection leg includes at least one first groove (33, 34) on the top face and at least one second groove (35, 36) on the bottom face, and in that the detection electrodes include first and second detection electrodes arranged facing each other, the first (27a) respectively the second detection electrode (28a) being arranged on one lateral flank of the groove (33) respectively of the groove (34) such that the electrical field between the first and second detection electrodes is substantially rectilinear through the detection leg, and third and fourth detection electrodes arranged facing each other, the third (27b) respectively the fourth detection electrode (28b) being arranged on one lateral flank of the groove (36) respectively of the groove (35), such that the electrical field between t…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.