Piezoelectric resonator and assembly comprising the same enclosed in a case
US6700313B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 30, 2002 |
| Grant date | Mar 2, 2004 |
| Priority date | — |
| Expiry date | Nov 22, 2022 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03H9/21
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
The resonator according to the invention, which is intended to be mounted in a case, includes a tuning fork shaped part (42) with two parallel arms (44, 46) connected to each other by a base (48) and carrying electrodes (52, 54) to make them vibrate, these electrodes being connected to connection pads (60, 62) intended to be electrically connected to the exterior of the case. In accordance with the invention, the resonator (40) also includes a central arm (50) attached to the base (48) and located between the arms (44, 46) of the tuning fork shaped part (42), substantially equidistant from them, this central arm (50) having a greater mass than that of the arms of the tuning fork shaped part and the connection pads (60, 62) are carried by this central arm.This resonator (40) is mounted in a case of parallelepiped shape by fixing its central arm (50) to at least one support secured to the bottom of the case.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.