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23 条记录 (耗时 0.024 秒)

    Flextensional metal-ceramic composite transducer
    12.
    发明授权
    Flextensional metal-ceramic composite transducer 有权
    弯曲金属陶瓷复合传感器

    公开(公告)号：US06232702B1

    公开(公告)日：2001-05-15

    申请号：US09376259

    申请日：1999-08-18

    申请人： Robert E. Newnham ,  Jindong Zhang

    发明人： Robert E. Newnham ,  Jindong Zhang

    IPC分类号： H01L4108

    CPC分类号： H01L41/1132 ,  G10K9/121

    摘要： An electroactive device incorporating the invention includes an electroactive ceramic annular substrate having a pair of opposed planar annular surfaces, a hollowed interior region and a thickness aspect. A first cap having a concave shape that extends into the hollowed interior region includes a rim portion, bounding the hollowed interior region, and joined to a first one of the planar surfaces. A second cap having a concave shape that extends into the hollowed interior region includes a rim portion, bounding the hollowed interior region, and joined to a second one of the planar surfaces. A potential measured across the ceramic substrate enables a field change in the ceramic substrate to be sensed, the field change caused by flexure of the ceramic substrate as a result of a pressure applied to the first and second caps.

    摘要翻译： 结合本发明的电活性装置包括具有一对相对的平面环形表面的电活性陶瓷环形基底，中空的内部区域和厚度方面。 具有延伸到中空的内部区域中的具有凹形形状的第一盖包括边界部分，其限定中空的内部区域，并且与第一平面表面接合。 具有延伸到中空的内部区域中的具有凹形形状的第二盖包括边界部分，其限定中空的内部区域，并且连接到第二平面表面。 通过陶瓷衬底测量的电位使陶瓷衬底中的场变化能够被感测，这是由于施加到第一和第二盖上的压力导致的陶瓷衬底的弯曲引起的场变化。

    Frequency agile sonic transducer
    13.
    发明授权
    Frequency agile sonic transducer 失效
    频率捷变声器

    公开(公告)号：US5166907A

    公开(公告)日：1992-11-24

    申请号：US720092

    申请日：1991-06-24

    申请人： Robert E. Newnham ,  Qi C. Xu ,  Michael Blaszkiewicz

    发明人： Robert E. Newnham ,  Qi C. Xu ,  Michael Blaszkiewicz

    IPC分类号： B06B1/06 ,  H04R17/08

    CPC分类号： B06B1/0614 ,  H04R17/08

    摘要： A solid-state tunable transducer has been developed by incorporating an elastically nonlinear material, silicone rubber, into an electroacoustic transducer made from piezoelectric ceramics. The resonant frequency and mechanical Q of the transducer are tuned mechanically by applying a uniaxial compressive stress to the composite. The resonant frequency is tuned electrically by placing a piezoelectric actuator into the composite and varying the magnitude of the d.c. bias.

    摘要翻译： 通过将弹性非线性材料硅橡胶结合到由压电陶瓷制成的电声换能器中，开发了固态可调谐传感器。 传感器的谐振频率和机械Q通过对复合材料施加单轴压应力机械地调谐。 谐振频率通过将压电致动器放置在复合材料中并且改变直流电的大小来进行电调谐。 偏压。

    Metal-electroactive ceramic composite transducer
    14.
    发明授权
    Metal-electroactive ceramic composite transducer 失效
    金属电活性陶瓷复合传感器

    公开(公告)号：US5729077A

    公开(公告)日：1998-03-17

    申请号：US572983

    申请日：1995-12-15

    申请人： Robert E. Newnham ,  Aydin Dogan

    发明人： Robert E. Newnham ,  Aydin Dogan

    IPC分类号： H01L41/083 ,  H01H57/00 ,  H01L41/09 ,  H01L41/08

    CPC分类号： H02N2/043 ,  H01H57/00

    摘要： A metal-ceramic device includes an electroactive ceramic substrate having a pair of opposed planar surfaces and a thickness aspect. Conductive electrodes sandwich the ceramic substrate and a first sheet metal cap having a concave shape, a substantially unchanging thickness and a rim is joined to a first planar surface of the ceramic substrate. A second sheet metal cap having a concave shape, a substantially unchanging thickness and a rim is bonded to a second planar surface of the ceramic substrate, the second planar surface opposed to the first planar surface. In an actuator embodiment, a potential is applied across the conductive electrodes to cause an expansion of the ceramic substrate in the thickness dimension and a concomitant contraction in its planar dimensions. The contraction causes a flexure of the sheet metal caps, which flexures are used for actuation purposes. In a sensor embodiment, the sheet metal caps are subjected to a displacement by an instrumentality, and a resulting change in voltage across the ceramic substrate is sensed.

    摘要翻译： 金属陶瓷器件包括具有一对相对的平面表面和厚度方面的电活性陶瓷衬底。 导电电极夹着陶瓷基板，并且具有凹形，基本上不变的厚度和边缘的第一金属板接合到陶瓷基板的第一平面表面。 具有凹形，基本上不变的厚度和边缘的第二金属片盖结合到陶瓷基片的第二平面上，第二平面与第一平面相对。 在致动器实施例中，在导电电极之间施加电位以使陶瓷基板在厚度尺寸上的膨胀以及其平面尺寸的伴随收缩。 收缩导致金属板盖的弯曲，该挠曲件用于致动目的。 在传感器实施例中，通过仪器对金属板盖进行位移，并且感测出陶瓷基板两端的电压变化。

    Transformed stress direction acoustic transducer
    15.
    发明授权
    Transformed stress direction acoustic transducer 失效
    变形应力方向声换能器

    公开(公告)号：US4999819A

    公开(公告)日：1991-03-12

    申请号：US510490

    申请日：1990-04-18

    申请人： Robert E. Newnham ,  Qichang C. Xu ,  Shoko Yoshikawa

    发明人： Robert E. Newnham ,  Qichang C. Xu ,  Shoko Yoshikawa

    IPC分类号： B06B1/06 ,  G10K9/12 ,  H01L41/24

    CPC分类号： B06B1/0644 ,  G10K9/121

    摘要： This invention describes an acoustic transducer assembly wherein an extremely high figure of merit (d.sub.h g.sub.h) is obtained as a result of converting incoming acoustic axial stress into radial extensional stress thereby multiplying its effect. The piezoelectric active element is encased in a metal sandwich enclosing two semilunar air spaces which allow the device to withstand extremely high hydrostatic pressure yet still respond to low level sound waves when acting as a hydrophone. The mechanical prestress induced by the differential coefficients of expansion between the metal case and the piezoelectric ceramic element also serves to prevent depolarization aging.

    摘要翻译： 本发明描述了一种声换能器组件，其中通过将输入的声学轴向应力转换成径向的拉伸应力从而使其效应变得更大，获得极高的品质因数（dhgh）。 压电有源元件被封装在包围两个半月空间的金属夹层中，这允许器件承受极高的流体静压力，但当作为水听器时仍然响应低水平的声波。 由金属壳体和压电陶瓷元件之间的微分膨胀系数引起的机械预应力还用于防止去极化老化。

    Class V flextensional transducer with directional beam patterns
    16.
    发明授权
    Class V flextensional transducer with directional beam patterns 失效

    公开(公告)号：US06614143B2

    公开(公告)日：2003-09-02

    申请号：US09942272

    申请日：2001-08-29

    申请人： Jindong Zhang ,  Robert E. Newnham

    发明人： Jindong Zhang ,  Robert E. Newnham

    IPC分类号： H01L4104

    CPC分类号： G10K11/32 ,  G10K9/121 ,  G10K9/125 ,  H04R17/00

    摘要： An electro active device for generating a directional beam includes first and second electro active substrates each having first and second opposed continuous planar surfaces wherein each of the first opposed surfaces have a polarity and each of the second opposed surfaces have an opposite polarity. The first opposed surfaces of the first and second electro active substrates are in close contact. A first electrode is coupled to a junction formed by the first opposed surfaces having the same polarity, a second electrode is coupled to the second opposed surface of the first electro active substrate, and a third electrode is coupled to the second opposed surface of the second electro active substrate. A first endcap is joined to the second opposed surface of the first electro active substrate and a second endcap is joined to the second opposed surface of the second electro active substrate.

    Metal-electroactive ceramic composite actuators
    17.
    发明授权
    Metal-electroactive ceramic composite actuators 失效
    金属电活性陶瓷复合制动器

    公开(公告)号：US5276657A

    公开(公告)日：1994-01-04

    申请号：US835245

    申请日：1992-02-12

    申请人： Robert E. Newnham ,  Qichang C. Xu ,  Shoko Yoshikawa

    发明人： Robert E. Newnham ,  Qichang C. Xu ,  Shoko Yoshikawa

    IPC分类号： H01L41/09 ,  H04R17/00 ,  H04R17/08

    CPC分类号： H04R17/00 ,  H02N2/043 ,  H04R17/08

    摘要： The metal-ceramic actuator includes an electroactive substrate having at least a pair of opposed planar surfaces and a determined thickness, with the ceramic substrate being poled in its thickness dimension. Conductive electrodes sandwich the ceramic substrate and are bonded to its planar surfaces. Metal caps, each having a concave cavity bounded by a rim, are bonded to both planar surfaces of the ceramic substrate. A potential is applied to the conductive electrodes to cause an expansion of the ceramic substrate in its thickness dimension and a concomitant contraction in its planar dimensions. The contraction creates a flexure of the metal caps, which flexures are used to actuate another instrumentality.

    摘要翻译： 金属陶瓷致动器包括电活性基底，其具有至少一对相对的平坦表面和确定的厚度，陶瓷基底在其厚度尺寸上被极化。 导电电极夹着陶瓷基片，并与其平面连接。 每个具有由边缘限定的凹腔的金属盖结合到陶瓷基板的两个平面表面。 对导电电极施加电位，导致陶瓷基板在其厚度尺寸上的膨胀以及其平面尺寸的伴随收缩。 收缩产生金属盖的弯曲，该挠曲用于致动另一种工具。

    Process for fabricating hollow electroactive devices
    19.
    发明授权
    Process for fabricating hollow electroactive devices 有权
    制造中空电活性器件的方法

    公开(公告)号：US07437817B2

    公开(公告)日：2008-10-21

    申请号：US11329464

    申请日：2006-01-11

    申请人： Jindong Zhang ,  Robert E. Newnham

    发明人： Jindong Zhang ,  Robert E. Newnham

    IPC分类号： H04R31/00

    CPC分类号： H01L41/314 ,  A61B8/12 ,  H01L41/33 ,  Y10T29/42 ,  Y10T29/49002 ,  Y10T29/49004 ,  Y10T29/49005 ,  Y10T29/49007 ,  Y10T29/4902 ,  Y10T29/49128 ,  Y10T29/49155 ,  Y10T29/49156

    摘要： A process for fabricating a ceramic electroactive transducer of a predetermined shape is disclosed. The process comprises the steps of providing a suitably shaped core having an outer surface, attaching a first conductor to the outer surface of the core, coating an inner conductive electrode on the outer surface of the core such that the inner conductive electrode is in electrical communication with the first conductor, coating a ceramic layer onto the inner electrode, thereafter sintering the ceramic layer, coating an outer electrode onto the sintered ceramic layer to produce an outer electrode that is not in electrical communication with the first conductor, and then poling the sintered ceramic layer across the inner electrode and the outer electrode to produce the ceramic electrode.

    摘要翻译： 公开了一种制造具有预定形状的陶瓷电动换能器的方法。 该方法包括以下步骤：提供具有外表面的合适形状的芯，将第一导体附接到芯的外表面，在芯的外表面上涂覆内导电电极，使得内导电电极与电连通 利用第一导体将陶瓷层涂覆在内部电极上，然后烧结陶瓷层，将外部电极涂覆到烧结陶瓷层上以产生不与第一导体电连通的外部电极，然后将烧结的 陶瓷层穿过内部电极和外部电极以产生陶瓷电极。