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    Piezoelectric ceramic fibers having metallic cores
    52.
    发明申请
    Piezoelectric ceramic fibers having metallic cores 有权
    具有金属芯的压电陶瓷纤维

    公开(公告)号：US20050274176A1

    公开(公告)日：2005-12-15

    申请号：US10865305

    申请日：2004-06-10

    申请人： Jack Thiesen ,  John Adamson

    发明人： Jack Thiesen ,  John Adamson

    IPC分类号： B60C23/04 ,  H01L41/087 ,  H01L41/113 ,  G01M17/02 ,  E01C23/00

    CPC分类号： H01L41/087 ,  B60C23/0411 ,  H01L41/113

    摘要： An enhanced piezoelectric wire structure includes an elongated portion of piezoelectric material, a metallic core, and an outer conductive sheath. The metallic core is substantially surrounded by the elongated portion of piezoelectric material and configured to function as a first electrode for the piezoelectric structure. The conductive outer sheath preferably covers selected areas of the elongated portion of piezoelectric material and functions as a second electrode for the structure. The piezoelectric material may correspond to barium titanate ceramic fibers, such that a lead-free structure is effected, however other piezoelectric materials may also be utilized. The disclosed structure can be poled with a reduced poling voltage and lower temperature level, and also requires a reduced voltage potential level required for mechanical actuation. A collection of such piezoelectric structures can be provided together in a modular patch assembly that may be formed in a variety of customized configurations for integration with various environments, and can function as a mechanical actuator device, a condition-responsive device (e.g., a sensor) and/or as a power generation device. When utilized as a power generation device, the subject piezoelectric assembly can power tire electronics components such as a revolution counter, a sensor, a rechargeable battery, a flashing light assembly, a microcontroller, a global positioning system (GPS), and a radio frequency (RF) device.

    摘要翻译： 增强的压电线结构包括压电材料的细长部分，金属芯和外导电护套。 金属芯基本上被压电材料的细长部分包围，并被配置为用作压电结构的第一电极。 导电外护套优选地覆盖压电材料的细长部分的选定区域并且用作该结构的第二电极。 压电材料可以对应于钛酸钡陶瓷纤维，使得实现无铅结构，然而也可以使用其它压电材料。 所公开的结构可以以降低的极化电压和较低的温度水平极化，并且还需要机械致动所需的降低的电压电位。 这样的压电结构的集合可以一起提供在模块化贴片组件中，其可以形成为用于与各种环境集成的各种定制配置，并且可以用作机械致动器装置，状态响应装置（例如，传感器 ）和/或作为发电装置。 当用作发电装置时，本发明的压电组件可以为轮胎电子部件（例如转数计数器，传感器，可充电电池，闪光组件，微控制器，全球定位系统（GPS）和射频 （RF）设备。

    Coaxial flexible piezoelectric cable polarizer, polarizing method, defect detector, and defect detecting method
    55.
    发明申请
    Coaxial flexible piezoelectric cable polarizer, polarizing method, defect detector, and defect detecting method 失效
    同轴柔性压电电缆偏振器，偏振方法，缺陷检测器和缺陷检测方法

    公开(公告)号：US20040251772A1

    公开(公告)日：2004-12-16

    申请号：US10485491

    申请日：2004-01-30

    发明人： Mitsuo Ebisawa ,  Takeshi Nagai ,  Tooru Sugimori

    IPC分类号： H01L041/08

    CPC分类号： H01L41/45 ,  G01R31/021 ,  G01R31/083 ,  H01L41/087 ,  H01L41/257 ,  Y10S310/80 ,  Y10T29/42

    摘要： The invention provides a defect inspecting apparatus and a defect detecting method for specifying a position of a defect before polarization when the defect is included in a coaxial flexible piezoelectric member. Further, when a piezoelectric tube is moved in polarization, a friction force is produced between the coaxial flexible piezoelectric member and a block-like conductor and therefore, a large force is needed in moving the piezoelectric tube. The invention provides a polarizing apparatus and a polarizing method capable of moving the piezoelectric tube even by a small force. There are provided a defect detecting apparatus of a coaxial flexible piezoelectric member having a constitution of applying a direct current to a coaxial flexible piezoelectric member while moving a piezoelectric tube arranged at a hole of inspecting electrode means and a marking apparatus for marking a defect portion. Thereby, when a defect is present at a portion thereof arranged at the hole of the inspecting electrode means, electricity is discharged at the defect portion and therefore, the defect portion can be specified and the mark can be attached to the defect portion. Further, a conductive block provided with a path portion of the piezoelectric tube is divided. By dividing the block-like conductor by a plural number, a friction force between the block-like conductor per divided one and the piezoelectric tube is reduced. Further, the piezoelectric tube can be moved by a small force by a pulley arranged at a fold back portion of the piezoelectric tube.

    摘要翻译： 本发明提供了一种缺陷检查装置和缺陷检测方法，用于在缺陷包含在同轴柔性压电元件中时指定极化之前的缺陷的位置。 此外，当压电管偏振移动时，在同轴的柔性压电元件和块状导体之间产生摩擦力，因此在移动压电管时需要较大的力。 本发明提供一种能够通过小的力移动压电管的偏振装置和偏振方法。 提供了一种同轴柔性压电元件的缺陷检测装置，其具有在移动布置在检查电极装置的孔处的压电管和用于标记缺陷部分的标记装置的同时向同轴的柔性压电元件施加直流电的结构。 因此，当在布置在检查电极装置的孔的部分处存在缺陷时，在缺陷部分放电，因此可以指定缺陷部分并且可以将标记附着到缺陷部分。 此外，分隔设置有压电管的路径部分的导电块。 通过将块状导体分割多个，分割的块状导体与压电管之间的摩擦力减小。 此外，压电管可以通过布置在压电管的折回部分处的滑轮以小的力移动。

    Process for polarizing a ferroelectric material in the shape of a cylinder
    56.
    发明授权
    Process for polarizing a ferroelectric material in the shape of a cylinder 有权

    公开(公告)号：US06493205B2

    公开(公告)日：2002-12-10

    申请号：US09777719

    申请日：2001-04-25

    申请人： Francois Bauer

    发明人： Francois Bauer

    IPC分类号： H01T2300

    CPC分类号： H01L41/45 ,  H01L41/087 ,  H01L41/257

    摘要： Process for polarizing at least a part of a ferroelectric material in a cylindrical shape having a longitudinal axis, and having an internal conductor inside the cylinder disposed along the longitudinal axis. At least part of said cylinder is placed in a conductive liquid with the cylinder being free from any stresses other than pressure exerted by the conductive liquid. A low frequency AC voltage is then applied between an electrode in contact with the conductive liquid and the internal conductor, and the amplitude of the voltage is increased progressively up to a value such that an electrical field is created having an amplitude greater than a coercive field of polarization Ec of the ferroelectric material.

    Piezoelectric pressure sensor
    57.
    发明授权
    Piezoelectric pressure sensor 失效
    压电式压力传感器

    公开(公告)号：US06271621B1

    公开(公告)日：2001-08-07

    申请号：US09366053

    申请日：1999-08-02

    申请人： Masahiko Ito ,  Takeshi Nagai ,  Yuko Fujii ,  Hiroyuki Ogino

    发明人： Masahiko Ito ,  Takeshi Nagai ,  Yuko Fujii ,  Hiroyuki Ogino

    IPC分类号： H01L4108

    CPC分类号： G01L1/16 ,  G01L9/008 ,  H01L41/087 ,  Y10S310/80

    摘要： Two kinds of pressure sensors using a piezoelectric composite comprising amorphous chlorinated polyethylene, crystalline chlorinated polyethylene and piezoelectric ceramic powder are disclosed. The first is a piezoelectric cable comprising an inner conductor of a metal helix, the volume within the metal helix is filled with fine insulating polymer fibers, a piezoelectric composite layer circumferentially surrounding the inner conductor, and an outer conductor of a metal film attached on a polymer membrane. The metal film is in contact with said composite layer but separated from the inner conductor and a protective jacket. The second type of pressure sensor is a planar sensor comprising a piezoelectric composite in a planar form sandwiched with conductors of two metal films attached on two polymer membranes, each metal film is in contact with the composite but separated from each other.

    摘要翻译： 公开了使用包含无定形氯化聚乙烯，结晶氯化聚乙烯和压电陶瓷粉末的压电复合材料的两种压力传感器。 第一种是包括金属螺旋的内部导体的压电电缆，金属螺旋体内的体积填充有精细的绝缘聚合物纤维，周向围绕内部导体的压电复合层和附着在金属膜上的金属膜的外部导体 聚合物膜。 金属膜与所述复合层接触，但与内部导体和保护套隔开。 第二种类型的压力传感器是一种平面传感器，它包括一个平面形状的压电复合材料，夹在两个聚合物膜上的两个金属膜的导体之间，每个金属膜与复合材料接触，但彼此分开。

    Piezoelectric cable
    58.
    发明授权
    Piezoelectric cable 失效
    压电电缆

    公开(公告)号：US5275885A

    公开(公告)日：1994-01-04

    申请号：US918941

    申请日：1992-07-22

    申请人： Kohji Ogura

    发明人： Kohji Ogura

    IPC分类号： G01V1/20 ,  H01L41/087 ,  B32B27/00 ,  H01B3/00 ,  H01B7/00

    CPC分类号： G01V1/208 ,  H01L41/087 ,  Y10T428/2933 ,  Y10T428/294 ,  Y10T428/2947 ,  Y10T428/2953 ,  Y10T428/2975

    摘要： A piezoelectric cable for use in detecting under water acoustic wave while being trailed by a boat is disclosed, which includes a core electrode, an outer electrode surrounding the core electrode, a piezoelectric layer disposed between the core electrode and the outer electrode, a sheath surrounding the outer electrode, and a shape retaining member extending axially within the cable and formed of a shape memory alloy whose phase is transformed between an austenite phase and a martensite phase by changing the temperature thereof and memorizing a predetermined shape in the austenite phase of the alloy. One of the core and outer electrodes may be formed of the shape memory alloy and, in this case, the shape retaining member can be omitted.

    摘要翻译： 本发明公开了一种用于在船上拖动时在水声波下检测的压电电缆，其包括芯电极，围绕芯电极的外电极，设置在芯电极和外电极之间的压电层，围绕 外部电极和形状保持构件，其在电缆内轴向延伸并且由形状记忆合金形成，该相形状记忆合金的相位通过改变其温度并在合金的奥氏体相中存储预定形状而在奥氏体相和马氏体相之间转变 。 核心和外部电极中的一个可以由形状记忆合金形成，并且在这种情况下，可以省略形状保持构件。

    Method of making coaxial cable
    59.
    发明授权
    Method of making coaxial cable 失效
    同轴电缆制作方法

    公开(公告)号：US4715098A

    公开(公告)日：1987-12-29

    申请号：US897470

    申请日：1986-08-15

    申请人： Michael Booth ,  Richard J. Penneck

    发明人： Michael Booth ,  Richard J. Penneck

    IPC分类号： H01L41/08 ,  G01H11/08 ,  H01L41/087 ,  H01L41/45 ,  H04R17/00

    CPC分类号： H01L41/087 ,  H01L41/257 ,  H01L41/45 ,  Y10S310/80 ,  Y10T29/42

    摘要： A piezoelectric coaxial cable comprises a central stretchable electrical conductor (1), preferably formed from a low melting point metal alloy, a piezoelectric intermediate layer (2), preferably formed from a vinylidene fluoride polymer which has been stretched and radially polarized to render it piezoelectric, and an outer electrical conductor (3).The intermediate layer has a ratio R of its internal radius to its external radius which is preferably not more than 0.5 and more preferably not more than 0.4. This construction enables coaxial cables to be formed without voiding or breaking of the internal conductor during stretching.

    Underwater piezoelectric arrangement
    60.
    发明授权
    Underwater piezoelectric arrangement 失效
    水下压电布置

    公开(公告)号：US4695988A

    公开(公告)日：1987-09-22

    申请号：US772911

    申请日：1985-09-05

    申请人： Hisao Banno

    发明人： Hisao Banno

    IPC分类号： G01V1/20 ,  H01L41/087 ,  H04R17/00 ,  G01V1/38

    CPC分类号： G01V1/208 ,  H01L41/087 ,  H04R17/005 ,  Y10S310/80

    摘要： Underwater piezoelectric arrangement in which it comprises two piezoelectric layers made of piezoelectric ceramic-polymer composites, one of the layers has larger hydrophone constant than that of the other layer, and by noise cancelling based on the specific construction of the piezoelectric layers only charges or voltages generated by acoustic waves which act on each layer can be selectively detected. The piezoelectric arrangement may be utilized to provide a piezoelectric cable for use in a submarine earthquake searching or fish finding hydrophone, or an acoustic measuring element under water.

    摘要翻译： 水下压电布置包括由压电陶瓷 - 聚合物复合材料制成的两个压电层，其中一层具有比另一层更大的水听器常数，并且基于压电层的具体结构的噪声消除仅仅是电荷或电压 可以选择性地检测作用于每层的声波产生的声波。 压电装置可用于提供用于海底地震搜索或鱼探水听器或水下的声学测量元件的压电电缆。