Abstract: The piezoelectric resonator according to the invention includes a tuning fork shaped part with two parallel vibrating arms, connected to each other by a linking part, from which protrude a central arm located between both vibrating arms of the tuning fork shaped part, the vibrating arms carrying first electrodes to make them vibrate, these electrodes being connected to connection elements carried by the central arm, wherein a slot has been cut within the linking part opposite to the central arm and wherein second electrodes have been arranged along said slot.

Abstract: The piezoelectric resonator according to the invention is to be mounted in a case and includes a tuning fork shaped part with two parallel vibrating arms, connected to each other by a linking part, from which protrude a central arm located between both vibrating arms of the tuning fork shaped part. The vibrating arms carry electrodes to make them vibrate, these electrodes being connected to connection elements carried by the central arm, the connection elements being electrically connected and fixed to the case, wherein at least one connection element comprises an opening through the central arm for positioning the resonator into the case.

Abstract: The piezoelectric resonator according to the invention includes a tuning fork shaped part with two parallel vibrating arms, connected to each other by a linking part, from which protrude a central arm located between both vibrating arms of the tuning fork shaped part, the vibrating arms carrying first electrodes to make them vibrate, these electrodes being connected to connection elements carried by the central arm, wherein a slot has been cut within the linking part opposite to the central arm and wherein second electrodes have been arranged along said slot.

Abstract: The invention concerns an assembly comprising a piezoelectric resonator and a case, said case including a main part with a bottom and sides, in which said resonator is mounted and a cover fixed to said main part, said resonator including a tuning fork shaped part with two parallel vibrating arms connected to each other by a linking part, and a central arm protruding from said linking part and located between both vibrating arms carrying at least two electrodes to make them vibrate, these two electrodes being connected respectively to at least first and second connection pads located on a back face of said central arm oriented toward the bottom of the case, said case further comprising at least one support secured to its bottom on which said central arm of the resonator is fixed by means of at least first and second connection elements located on said support and electrically connected respectively to said first and second connection pads by a conductive adhesive, wherein guiding means are provided at least wi

Abstract: The piezoelectric resonator according to the invention includes a tuning fork shaped part with two parallel vibrating arms, connected to each other by a linking part, from which protrude a central arm located between both vibrating arms of the tuning fork shaped part, wherein at least one groove is formed on at least one of a front side and a rear side of each vibrating arm.

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.

Abstract: Encapsulated piezoelectric resonator including on the one hand a central plate (5) made of a piezoelectric material cut to form a frame (6) and a central resonant element (9) connected to said frame (6), the top and bottom faces having a metal coating, on the other hand bottom (11) and top (16) covers, each being formed by a spacing frame (12, 17) made of metal or a metal alloy and a closing plate (14, 19), characterised in that at least one of the elements (12, 14, 17, 19) forming the covers (11, 16) is electrically connected to the frame (6) of the central plate (5) and has an extension (10, 13, 18, 20) bent into a Z shape to bring its distal portion (10a, 13a, 18a, 20a) in line with a covering plate (14, 19) and to form electrical and mechanical connection means situated in a same plane.