Abstract: A vibrating gyroscope includes a vibrator having a longitudinal direction and being capable of vibrating in a bending mode in a bending direction perpendicular to the longitudinal direction. The vibrator has first and second nodes which elongate in a direction perpendicular to both the bending direction and the longitudinal direction and first, second, third and fourth supporting members connected to the vibrator such that the first node is interposed between the first and second supporting members and the second node is interposed between the third and fourth supporting members. The first node is located at the vicinity of either the first supporting member or the second supporting member, and the second node is located at the vicinity of either the third supporting member or the fourth supporting member.

Abstract: A vibrating gyroscope includes a vibrator having a node and a support member having a thin flexible portion and an expanded portion which is connected to the thin flexibly portion and has a larger area than the thin flexible portion. The expanded portion of the support member is fixed to the vibrator at the node.

Abstract: A transducer for emitting and picking up mechanical vibrations includes a center body (4) suspended in a piezo-electric and elastic suspension structure (3) in a surrounding framework (2). The suspension structure (3) is formed in sectors, and has separate signal wires for each respective sector (5) so that vibrations can be emitted and received at the same time with different sectors (5). In addition, the center body (4) can be equipped with piezo-elements of its own.

Abstract: The width-extensional mode piezoelectric crystal resonator comprising vibrational portion, connecting portions and supporting portion is shown with new cut angle and electrode construction, which provides a high frequency and a high electro-mechanical transformation, even when said resonator is miniaturized. As a result of which the miniature crystal resonator may be provided with a small series resistance and a high quality factor Q. This is accomplished by cut angle, electrode construction and a large piezoelectric constant of the width-extensional mode piezoelectric crystal resonator. In addition, an improvement of the frequency temperature behavior for the crystal resonator is accomplished by connecting a plurality of resonators integratedly through frame or supporting frame. Crystal resonators with different turn over temperature points are electrically connected in parallel.

Abstract: The present invention provides a method of mounting a piezoelectric device having a plurality of mounting pads directly to a printed circuit board comprising the steps of providing a piezoelectric device, miniature conductive springs and a printed circuit board, attaching the springs to mounting pads of the piezoelectric transformer, and attaching the springs to the printed circuit board. Also disclosed is an apparatus made according to the method.

Abstract: The Lame mode quartz crystal resonator vibrating in overtone mode is formed of an X-plate quartz crystal obtained in a manner that a blank X-plate quartz crystal having a coordinate of x, y and z axes is rotated through 36.5° to 47° about its y-axis and further rotated through 65° to 85° about a new x′-axis corresponding to the x-axis produced by the rotation about the y-axis and the thus rotated blank X-plate quartz crystal is then cut out along planes parallel to x-y, y-z and z-x planes of the original coordinate system, respectively. The quartz crystal resonator includes a vibrating portion, a supporting frame and a mounting portion formed integrally. The vibrating portion is connected through two connecting portions to the supporting frame and the mounting portion, as a result of which the quartz crystal resonator has less series resistance R1 and exhibits minimum vibrational energy losses and minimum frequency change over a wide temperature range.

Abstract: A laminated piezoelectric transformer has one through-hole formed in the laminated piezoelectric transformer at a center position which becomes a node of vibration of the laminated piezoelectric transformer, and a support rod member is inserted in the through-hole and bonded to the through-hole by a bonding agent, for supporting the laminated piezoelectric transformer.

Abstract: A vibrating gyroscope includes a vibrator having a longitudinal direction and being capable of vibrating in a bending mode in a bending direction perpendicular to the longitudinal direction. The vibrator has first and second nodes which elongate in a direction perpendicular to both the bending direction and the longitudinal direction and first, second, third and fourth supporting members connected to the vibrator such that the first node is interposed between the first and second supporting members and the second node is interposed between the third and fourth supporting members. The first node is located at the vicinity of either the first supporting member or the second supporting member, and the second node is located at the vicinity of either the third supporting member or the fourth supporting member.

Abstract: A tuning-fork vibration gyro includes a tuning-fork vibrator having two arms and a base portion, and a supporting portion located in a center of a rotational motion of the base portion caused by a vibration resulting from a Coriolis force. The supporting portion protrudes from two surfaces of the base portion opposite each other in a direction in which the vibration resulting from the Coriolis force occurs.

Abstract: A piezoelectric resonator (12) is embedded within an electrically insulating substrate assembly (36), such as a multilayer printed circuit board. Electrical conductors (22,24) extend from electrodes of the resonator (12) through holes (32) in upper and lower layers (26,29) of the substrate assembly (36) and connect to electrical traces (34). The lower layer (29) has a pocket which forms a cavity (38) within the substrate assembly (36) adapted to contain the piezoelectric resonator (12). The conductors (22,24) support the resonator (12) such that the resonator (12) does not contact the assembly (36). As the resonator is substantially larger than associated electrical components, embedding it within a substrate eliminates the size penalty that is normally required to mount a large piezoelectric resonator.

Abstract: An electronic component involving a 3-terminal type piezo-electric device is disclosed. The piezo-electric device connected to a first terminal, and a capacitor connected to both a second terminal and the outside of the first terminal are firmly supported by first and second supporting means, so that the connecting work can be easily carried out, and that the connection state can be firmly maintained, thereby upgrading the reliability of the electronic component involving the 3-terminal type piezo-electric device. The electronic component involving a 3-terminal type piezo-electric device includes a device part 110 having a piezo-electric device 111 and a capacitor 115. A terminal part 120 has a first terminal 123 with bent portions to surround both ends of the piezo-electric device 111 and to be connected to the capacitor 115, and a second terminal 124 for being connected to the outer face of the capacitor 115.

Abstract: A piezoelectric switch comprises a housing having an inner surface and an outer surface. A piezoelectric element is mounted on the inner surface of the housing. The piezoelectric element has a top layer made of piezo crystal and a bottom layer made of a conductive metal such as brass. A printed circuit board is disposed within the housing for controlling the state of the switch. The printed circuit board is electrically connected to the piezoelectric element by an electrical conductor. In one embodiment, the electrical conductor is in the form of a flex circuit which has a positive terminal, a negative terminal and a printed circuit board overlay portion that is affixed to the printed circuit board. The flex circuit sandwiches the piezoelectric element therewithin so that the positive terminal contacts the top layer and the negative terminal contacts the bottom layer.

Abstract: A piezoelectric component includes a substrate on which pattern electrodes are disposed. A piezoelectric resonator is placed on the substrate. The piezoelectric resonator generates a longitudinal vibration and includes a base member. External electrodes are disposed at both sides of a groove formed on one side surface of the base member. At the center of the base member in the longitudinal direction, support members made from an electrically conductive material are provided on the external electrodes. The support members are bonded to the pattern electrodes of the substrate via electrically conductive adhesive. An insulating adhesive is disposed between the support members. As a result of this structure, the piezoelectric component has a sufficient bonding strength between the base member and the piezoelectric resonator and prevents a short circuit from occurring between the support members formed in the piezoelectric resonator.

Abstract: With a cylindrical case (10) and a base (18) for sealing an aperture part of the case (10), a piezo-electric transducer is enclosed in the case (10). The base (18) has a cylindrical shape and its section intersecting its axis at right angles at the part where the base (18) comes into contact with the case (10) is elliptical or nearly elliptical. The shape of an inner circumference of a section of the case (10) intersecting its axis at right angles at the part where the case (10) touches the base (18) is smaller than that of the section of the base (18), and is elliptical or nearly elliptical. The case (10) is a cylinder with one end closed and one end open. The piezo-electric transducer is enclosed by press fitting the base (18) into the open end of the case (10). In this case, a press-fitting allowance has a maximum value at parts between minor and major axes of the ellipse or near ellipse.

Abstract: In a vibration gyroscope 1, a vibrator 2 is mounted to a mounting substrate 7 through support pins 6a and 6b. The mounting substrate 7 and a support substrate 10 are disposed opposite by inserting protrusions 11a and 11b of the support substrate 10 into second insertion holes 9a and 9b of the mounting substrate 7 and by supporting the mounting substrate 7 with convex molded sections 14a and 14b. The space between the substrates 7 and 10 are filled with elastic paste made up of synthetic resin such as urethan and silicone, or the like. The paste is dried to form a vibration absorbing member 13. Alternatively, the vibration absorbing member 13 is formed on the surface of a mounting substrate 22.

Abstract: A vibrating gyroscope having a supporting structure of a vibrator including, for example, a substantially regular triangular prism-shaped vibrating body. The vibrating body is formed with materials generally generating a mechanical vibration such as a constant-elastic materials. On three side faces of the vibrating body, three piezoelectric elements are formed respectively. On a ridge-line portion of the vicinity of two nodal points of the vibrating body, for example, a substantially rectangular frame-shaped supporting member is secured. The supporting member is formed into a body by means of etching or press molding. In this case, long sides of the supporting member are formed so as to extend in an axial direction of the vibrating body. Short sides of the supporting member are bonded to the vibrating body by securing means such as welding, adhesives or soldering.

Abstract: Mounting arrangements are provided for crystals, which greatly reduces or iminates the effect of the force which develops on the crystal when acceleration is encountered. In these arrangements, flexible bushings are incorporated to absorb energy during periods of acceleration and collars are incorporated between which portions of the crystal are gripped to stiffen the structural characteristics thereof.

Abstract: A vibrating gyroscope having a vibratable body in the form of a triangular prism, piezoelectric elements formed on side surfaces of the vibrating body and having the same vibration characteristics and a detection circuit having two input terminals connected to two of the piezoelectric elements to detect the difference between the outputs from the two piezoelectric elements, the two detection piezoelectric elements being selected such that the difference between their outputs with respect to a change in ambient atmosphere temperature is the smallest.

Abstract: A piezoelectric transformer has a piezoelectric substrate having first and second main faces. The substrate has first and second primary-side regions and a secondary-side region in its longitudinal direction in this order. The first region has a length of a half wavelength of stress distribution at the time of resonance in the longitudinal direction and has either positive or negative stress. The second region has a length of a half wavelength or less of the stress distribution and has either positive or negative stress. First and second electrode are respectively disposed on the first and second main faces in the first primary-side region, and the substrate between the first and second electrodes is polarized in the thicknesswise direction. Third and fourth electrodes are respectively disposed on the first and second main faces in the second primary-side region, and the substrate between the third and fourth electrodes is polarized in the thicknesswise direction.

Abstract: A piezoelectric vibrator includes a piezoelectric plate having electrodes respectively provided on a top and a bottom, and leads each extending from the respective electrode. A plurality of supports fix an edge portion of the piezoelectric plate including the leads by a conductive adhesive, and a base formed of an insulator, supports the plurality of supports. The plurality of supports each include a lower portion for sustaining the piezoelectric plate and are provided with a U-shaped section. The lower portion is longer than an upper portion included in each of the plurality of supports, the upper portion for supporting the top of the piezoelectric plate.

Abstract: A vibrating gyroscope 10 includes a piezoelectric vibrator 12. The piezoelectric vibrator 12 includes a vibrating body 14 having a regular triangular prism shape. Grooves 16 are formed on one side face of the vibrating body 14 along its width direction. The grooves 16 are formed at portions corresponding to nodal points of the vibrating body 14. Piezoelectric elements 18a, 18b and 18c are formed on three side faces of the vibrating body 14. An M-shaped supporting members 26 are attached to the vibrating body 14 at portions in grooves 16.

Abstract: A vibratory gyroscope includes, for example, a triangular columnar vibrating body formed with a non-metallic material. On three side faces of the vibrating body, patterned electrodes extending to the vicinity of one nodal point from the center portion are formed. One electrodes of piezoelectric elements are bonded to the patterned electrodes. The vibrating body has a larger Q than the piezoelectric element and a thermal expansion coefficient approximate to the piezoelectric element. Patterned electrodes are formed to the vicinity of the other nodal point of the vibrating body from the other electrodes of the piezoelectric elements. Support members formed with a conductive material are fixed to the patterned electrodes formed on two side faces of the vibrating body in the vicinity of the nodal points of the vibrating body. The support members are connected electrically to the patterned electrodes.

Abstract: Disclosed herein is a vibrating unit comprising vibration cancel means which is coupled to a vibration source through a vibration transfer part. The vibration cancel means receives vibration from the vibration source and resonates in a bending mode, to cancel vibration as propagated by a dynamic vibration absorbing phenomenon.

Abstract: In ultrasonic transducer which can be utilized to detect partial electrical discharges and oil-filled devices is disclosed. The transducer includes a housing, a piezoelectric crystal assembly received within the housing and positioned so that the piezoelectric element contacts the base surface of the housing, and a retaining member which grippingly engages the housing and applies a compressive force to the piezoelectric crystal assembly. The retaining member includes a hub portion and a plurality of angularly spaced-apart arms extending radially outwardly from the hub portion. The arms are positioned with respect to the hub portion so as to grippingly engage the inner surface Of the housing and causing the retaining member to apply a compressive force to the piezoelectric crystal assembly.

Abstract: The invention is a crystal oscillator having a vibrating plate comprising a vibrating part surrounded by a rim part spaced from the vibrating part except for a narrow connecting part that connects the vibrating part to the rim part in a cantilever fashion. The thickness of the vibrating part and the connecting part are less than the thickness of the rim part. The vibrating part is sandwiched between a pair of casings. Each of the casings has a recess facing the vibrating part, which prevent the vibrating part from contacting the casings. Each surface facing a recess has an electrode positioned thereon and an electrode lead extending from the surface electrode to the connecting part. Each casing has a through-hole positioned to face an electrical lead. A cup-shaped metal lead is placed in each through-hole with the bottom of the cup contacting the electrical lead facing the through-hole. Current to the surface electrodes is supplied through the metal leads.

Abstract: Disclosed herein is a vibrating unit containing a vibrator for utilizing vibration of the vibrator. A vibration transfer part is coupled to a portion of the vibrator exhibiting the minimum displacement or a portion close thereto, and a resonant part is coupled to the vibration transfer part and formed to receive vibration propagated from the vibrator to the vibration transfer part to resonate. The vibrating unit utilizes a dynamic vibration absorbing phenomenon.

Abstract: A vibrator 12 includes a regular triangular prism-shaped vibrating body 14. Center portions of two supporting members 18a and 18b are fixed to the vibrating body 14. One supporting member 18a includes a linear intermediate portion 20a extending in a widthwise direction (y-axis direction) of the vibrator 12, and two linear leg portions 22a and 22a bend downward from both ends of the intermediate portion 20a. In this case, a distance W' between tips of the two leg portions 22a and 22a is expanded wider than a length W of the intermediate portion 20a. Similarly, the other supporting member 18b also includes a linear intermediate portion 20b and two leg portions 22b and 22b, a distance between tips of which is expanded.

Abstract: The vibrator includes, for example, a triangular prism shaped vibrating body. On each of three side faces of the vibrating body, piezoelectric elements are formed respectively. The vibrating body makes bending vibration by giving a driving signal to one or two piezoelectric elements. The vibrator is used in a vibratory gyroscope. In this case, for example, one piezoelectric element is used for vibrating the vibrator. When a rotating force is applied to the vibratory gyroscope, a Coriolis force is exerted to produce output voltages on the remaining two piezoelectric elements corresponding to the rotational angular velocity.

Abstract: An oscillator has a pair of upper and lower casing members in the form of plates, and a vibration plate pinched between the upper and lower casing members. A tongue-like vibrating portion is formed by forming a slit in the vibration plate inside an outer peripheral portion of the vibration plate pinched between the upper and lower casing members. Electrodes are formed on obverse and reverse surfaces of the vibrating portion.

Abstract: Disclosed herein is a vibrating unit comprising vibration cancel means which is coupled to a vibration source through a vibration transfer part. The vibration cancel means receives vibration from the vibration source and resonates in a bending mode, to cancel vibration as propagated by a dynamic vibration absorbing phenomenon.

Abstract: An angular rate sensor system [10] comprising a vibratory sensing element [12] and signal processing circuit [14]. The element [12] is preferably a polymorphic rectangular bar fabricated from two layers of piezoceramic material [26, 28] divided by a thin center electrode [E.sub.c ], and a plurality of electrodes [E.sub.1 -E.sub.4 ] scored onto the planar conductive surfaces [30, 32]. The element [12] is suspended at its acoustic nodes [N, N'] to vibrate in one direction [V] normal to the physical plane of the electrodes [E.sub.c, E.sub.1 -E.sub.4 ] using any suitable mounting structure such as parallel crossed filaments [34] or inwardly angled support arms [64] that provide predetermined degrees of lateral [S'] and longitudinal [S] stiffness. The circuit [14] may optionally constitute totally shared [FIG. 7], partially shared [FIG. 8], or totally isolated [FIG. 9] driving and sensing functions, the corresponding element [12] being configured with dual-pair, single-pair, or single-triple outer electrodes [E.

Abstract: A piezoelectric component-mounting foil and foil making method are disclosed, whereby a first portion of the foil in a first plane substantially parallel to a second portion of the foil in a second plane are connected by a central portion not in the first or second plane, the central portion having at least one width dimension of the central portion less than at least one length dimension of the central portion. A conductive foil material, appropriate thickness, overall geometry, and, if desired, appropriate notch configuration are selected for a desired implementation of the foil for conductively attaching and at least partially supporting at least one piezoelectric component such as a quartz crystal.

Abstract: A crystal resonator having reduced acceleration sensitivity in which the resonator blank having one or more electrodes thereon has stiffening cover plates mounted to its top and bottom faces and spaced from the resonator blank by sidewalls.

Abstract: An ultrasonic motor comprises a rotor and a stator between which a pressurized face-to-face contact is established. The stator includes a longitudinal vibrator for producing a longitudinal thrust in the axial direction thereof and a torsional vibrator for transmitting a torsional thrust to the rotor in response to a longitudinal thrust timely generated by the longitudinal vibrator. The stator is supported by a structure which comprises a ring portion secured to the stator and a plurality of limb portions radially extending from the ring portion. Each of the limb portions has such an effective length and a width that the oscillation frequency of the motor matches the primary resonant frequency of a vibration of the limb portion generated on a plane normal to the axial direction of the stator and has such a thickness that the oscillation frequency matches an intermediate point between adjacent antiresonant frequencies of a vibration of the limb portion generated in the axial direction of the stator.

Abstract: A vibrator support structure for a vibrator having a vibrating body comprises a support stand, a first damper material disposed on top of the support stand, and a first substrate disposed on top of the first damper material. In addition, the vibrator support structure includes a second damper material disposed on top of only a portion of the first substrate and a second substrate disposed on top of the second damper material. Two support filaments are also provided for supporting the vibrating body, one of which is mounted on the exposed portion of the first substrate, while the other of which is mounted on the second substrate.

Abstract: A vibrator is disclosed having a vibrating body with a polygonal lateral cross-section. Two piezoelectric elements are disposed on nonparallel side surfaces of the vibrating body. A support structure is provided which supports the vibrating body at two support points of the vibrating body. The support points are located in a split plane which passes through the line of intersection of the two planes in which the two side surfaces lie and bisects the inner angle formed by these two planes. Furthermore, the support points are located on opposite sides of the vibrating body and each support point is located at or near a nodal point of the vibrator.

Abstract: In a conventional quartz crystal resonator, a sacrificial quartz layer attached to the mounting posts and between the active, vibrating quartz layer and the package base reduces mechanical stresses on the active quartz layer caused by thermal expansion coefficient differences. The intermediate quartz layer is a sacrificial layer which acts to maintain the spacing of mounting posts.

Abstract: A piezo-resonator comprises a supporting frame having a recess for attaching a piezoelectric resonator element. This recess consists of three portions, that is, a central portion, a pair of connecting portions which are outside of the central portion and a pair of end portions which are outside of the pair of connecting portions. The width W.sub.2 of the connecting portion, the width W.sub.1 of the central portion and the width W.sub.3 of the end portion have the relationship W.sub.2 >W.sub.1 >W.sub.3. Two terminals intersect respective connecting portions to be embedded in the supporting frame.

Abstract: For the purpose of utilizing the characteristic in a vibration energy entrapping mode of a higher order symmetric or asymmetric mode vibration generated when a piezoelectric resonator is excited, there are provided a portion having a cutoff frequency f.sub.2 about an energy entrapping portion having a cutoff frequency f.sub.1 for strongly exciting a higher order symmetric or asymmetric mode vibration and at least one energy absorbing portion having a cutoff frequency f.sub.3 (at least f.sub.1 and f.sub.3 <f.sub.2). The size of the energy entrapping portion (electrode), amount of plateback (f.sub.2 -f.sub.1)/f.sub.

Abstract: To increase the quality factor Q of the vibrational angular rate sensor and therefore the sensitivity of the sensor, stabilize the sensor performance, facilitate wiring work, and minimize the sensor, a square pillar shaped vibrator, four vibrator node support pins and an external vibrator support base are all formed integral with each other from a single constant elasticity material block. Further, at least three and preferably four piezoelectric elements are connected to an external circuit via at least three and preferably four separate thin film conductive layers each extending from each piezoelectric element, on and along each vibrator node support pin, to an external vibrator support base.

Abstract: A quartz crystal oscillator having a resonator leaf with electrode film for electrical conduction. The oscillator includes a semiconductor element which oscillates the resonator leaf. Lead terminals have a first end which are integrally molded to the semiconductor element by a resin and second ends which support the resonator leaf.

Abstract: A piezoelectric vibrator comprises a substrate consisting of Elinvar, in which a vibrating element is formed as an island. The vibrating element is connected to and supported by strip-like connecting portions which are connected with the surrounding frame. A piezoelectric film is formed on the surface of the vibrating element. Of the longitudinal end portions of the vibrating element in the vicinity of the connecting portions, one main surface side is formed as a thin-plate portion by etching, while the rest of the vibrating element has its thickness intact. The longitudinal edges of vibrating element are defined by etching carried out simultaneously with or after the previous etching step.

Abstract: A vibration wave motor has a support plate having a pin for supporting the vibration wave motor and an elastic ring through which a travelling vibration wave of the vibration wave motor propagates. The support plate and the elastic ring are bonded in union so that a support structure is simplified.

Abstract: A quartz crystal oscillator device including a quartz crystal resonator supported on a base via a support member and hermetically sealed by a cap wherein the support member comprising a pair of upper and lower disc-shaped connection sections, a through section which is provided between the two connection sections, and bent legs. This quartz crystal oscillator device has high resistance against impact and thermal shock and its resonance frequency is not affected by sealing stress. Furthermore, it can be assembled efficiently and made small.

Abstract: A piezoelectric resonator is arranged such that a pair of lead-in conductors extend through a flat hermetically sealed case obtained by bonding a pair of upper and lower halves, and are connected at projecting portions of the conductors to driving electrodes of a piezoelectric element. Electrical connections and mechanical bonding thus are provided by way of the projecting portions.

Abstract: A mounting is provided for a GT-cut, coupled mode piezoelectric resonator. The mount includes pedestals with recesses. Portions of the resonator are mounted in the recesses.

Abstract: A piezoelectric vibrator adapted to operate in a spreading vibrating mode comprises compensation parts for compensating for the non-vibratory, or dead, region of a piezoelectric element which is formed between two confronting coupling pieces. The compensation parts comprise peripheral parts of the piezoelectric element that extend in an non-uniform manner from a center line passing through the respective centers of the confronting coupling pieces.

Abstract: A resonator with an integrated infrared thermostat, having a sealed casing enclosing reflectors including concave spherical domes covered with an interior coating of reflecting metal, placed on either side of a piezoelectric crystal, an infrared heating means device positioned on either side of the crystal in front of the spherical domes, and a temperature sensor including a thermocouple of two thin metal layers superimposed seriatim on one side of the active part of the crystal and constituting additionally and simultaneously one of the excitation electrodes for the crystal.

Abstract: A quartz unit is arranged to permit its automatic manufacture. The quartz unit includes a quartz vibrator; a pair of opposed terminal metal fittings each consisting of a stem part, branch parts protruding from one end of the stem part on two sides thereof to form a Y shape and support parts protruding from the fore ends of the branch parts to carry jointly the quartz vibrator; electrodes of the quartz vibrator connected to the terminal metal fittings through the support parts; and a container consisting of front and rear halves which are joined together to effect sealing with the metal fittings interposed in between them. The stem, branch and support parts are obtained by punching from a metal plate in one unified body.

Abstract: A support structure for a vibrator comprising a casing having two sets of conical projections formed therein so as to confront each other, and a support framework supporting the vibrator at nodes of vibration thereof. The vibrator is supported within the casing with the support framework sandwiched between the tips of the respective projections of those two sets at the associated nodes of vibration of the support structure.