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41. 发明授权

US06445110B1 Piezoelectric device 失效
公开(公告)号：US06445110B1
公开(公告)日：2002-09-03
申请号：US09578131
申请日：2000-05-24
申请人： Masahiko Kimura , Akira Ando , Takuya Sawada , Hirozumi Ogawa
发明人： Masahiko Kimura , Akira Ando , Takuya Sawada , Hirozumi Ogawa
IPC分类号： H01L4104
CPC分类号： H03H9/177 , C04B35/475 , C04B35/6262 , C04B2235/3208 , C04B2235/604 , C04B2235/787 , H01L41/1878 , H03H9/02031 , H03H9/02157
摘要： A piezoelectric device having an electromechanical coefficient, which can be applied to practical uses, is obtained by an energy-trapping effect using a piezoelectric ceramic having a layered perovskite structure provided with high-temperature resistance and little high-frequency loss. The piezoelectric device has a substrate formed of a piezoelectric ceramic having a layered perovskite structure. The c-axis in the substrate is preferentially oriented in the width direction thereof, and the substrate is polarized in the longitudinal direction. Two electrodes are formed on both main surfaces of the substrate so as to oppose each other in the vicinity of the central part thereof. As a material used for the substrate, a piezoelectric ceramic composition primarily composed of a ceramic composition represented by the general formula CaBi4Ti4O15 is preferably used.

42. 发明授权

US06426585B1 Thickness or length polarized piezoelectric transformer 失效
标题翻译：厚度或长度极化压电变压器
公开(公告)号：US06426585B1
公开(公告)日：2002-07-30
申请号：US09714995
申请日：2000-11-20
申请人： Kazuo Kohno
发明人： Kazuo Kohno
IPC分类号： H01L4104
CPC分类号： H01L41/107
摘要： Multiple outputs can be efficiently generated in a piezoelectric transformer by utilizing both surfaces of a piezoelectric member at the primary side, and the piezoelectric member at the primary side is polarized in the direction of thickness or in the direction of length. The piezoelectric members at the secondary side applied with a polarization in the direction of thickness or in the direction of length are laminated on both surfaces of the piezoelectric member at the primary side in the direction of thickness or in the direction of length. When an alternating voltage is applied to the input terminals at the primary side, thickness vertical vibration is generated at the piezoelectric member at the primary side. The vertical wave vibration that propagates in the direction of thickness propagates to the piezoelectric members at the secondary side, and generates an alternating voltage by a piezoelectric positive effect.
摘要翻译：通过利用初级侧的压电元件的两个表面，可以在压电变压器中有效地产生多个输出，并且初级侧的压电元件在厚度方向或长度方向上极化。在厚度方向或长度方向施加极化的二次侧的压电元件在厚度方向或长度方向的一次侧层压在压电元件的两个表面上。当在一次侧向输入端施加交流电压时，在初级侧的压电元件产生厚度垂直振动。沿厚度方向传播的垂直波振动在次级侧传播到压电元件，并通过压电效应产生交流电压。

43. 发明授权

US06424081B1 Electronic device including langasite structure compounds and method for making same 失效
公开(公告)号：US06424081B1
公开(公告)日：2002-07-23
申请号：US09847955
申请日：2001-05-03
申请人： Bruce H. T. Chai , Mitch M. C. Chou , Haihong Qiu , Shen Jen
发明人： Bruce H. T. Chai , Mitch M. C. Chou , Haihong Qiu , Shen Jen
IPC分类号： H01L4104
CPC分类号： H03H9/64 , H03H9/02039 , H03H9/0259 , H03H9/56
摘要： An electronic device includes a piezoelectric layer formed of an ordered Langasite structure compound having the formula A3BC3D2E14, wherein A is calcium, B is niobium or tantalum, C is gallium, D is silicon, and E is oxygen. At least one electrode is connected to the piezoelectric layer and may be configured to define a device, such as a SAW resonator or filter, or a BAW resonator or filter. The ordered Langasite structure compound may have a substantially perfectly ordered structure.

44. 发明授权

US06424079B1 Energy harvesting eel 有权
标题翻译：能量收获鳗鱼
公开(公告)号：US06424079B1
公开(公告)日：2002-07-23
申请号：US09384822
申请日：1999-08-27
申请人： Charles B. Carroll
发明人： Charles B. Carroll
IPC分类号： H01L4104
CPC分类号： H02N2/185
摘要： A piezoelectric power generator, particularly for use in a flowing fluid stream, comprises an elongated, flexible central layer of a dielectric material having, spaced axially along opposite sides thereof, a plurality of separate piezoelectric elements each formed from a portion of a continuous layer of a piezoelectric layer extending along each opposite side of the central layer sandwiched between a pair of electrodes unique to each piezoelectric element.
摘要翻译：特别是用于流动流体流的压电发电机包括介电材料的细长柔性中心层，其具有沿其相对侧轴向间隔开的多个单独的压电元件，每个压电元件由连续层沿着中心层的每个相对侧延伸的压电层，夹在每个压电元件独特的一对电极之间。

45. 发明授权

US06417601B1 Piezoelectric torsional vibration driven motor 失效
标题翻译：压电式扭转振动驱动电机
公开(公告)号：US06417601B1
公开(公告)日：2002-07-09
申请号：US09697716
申请日：2000-10-27
申请人： Chulho Kim
发明人： Chulho Kim
IPC分类号： H01L4104
CPC分类号： H02N2/101
摘要： A high power and high torque density piezoelectric motor is developed using torsional actuator tube (stator) directly coupled to the rotor via one or two one way clutches. A cylindrical torsional actuator is comprised of a plurality of tubular piezoelectric ceramic segments poled along their length, aligned in alternate polarity and bonded together with intervening electrodes. When an alternating electric field is applied to the electrodes across adjacent segments to actuate the segments in their shear resonance mode, an end of the cylindrical actuator moves in a direction perpendicular to the length of the cylindrical actuator in response to the applied electric field. In a half cycle torsional motor, the angular motion of the end of the cylindrical actuator is transmitted to a rotor via a one way roller clutch positioned at one end of the cylindrical actuator. A full cycle motor has a second one way clutch positioned at the other end of the cylindrical actuator tube such that both ends of the tube vibrate in opposite angular directions. These rotary displacements contributed alternatively from both ends of the cylindrical actuator (stator) are selectively transmitted to the rotor in unidirectional rotary motion via a set of one-way clutches. The clutches are built into both ends of the stator tube in such an orientation that the minute strokes are accumulated by converting the high frequency mechanical vibrations into continuous (or step-wise) motion of the rotor. Thus the power generated in the piezoelectric element is converted directly into rotary motion of the rotor, and thus this coupling mechanism results in a highly efficient motor. Specific values of the torsional angle and torque can be tailored for each application, by varying the actuator material, geometry and the applied alternating electric field.
摘要翻译：使用通过一个或两个单向离合器直接耦合到转子的扭转致动器管（定子）开发出高功率和高扭矩密度的压电电动机。圆柱形扭转致动器由沿其长度极化的多个管状压电陶瓷部件组成，并以交替极性排列并与中间电极结合在一起。当交替电场施加到跨越相邻段的电极以在其剪切共振模式下致动段时，响应于所施加的电场，圆柱形致动器的端部沿垂直于圆柱形致动器的长度的方向移动。在半循环扭转马达中，圆柱形致动器的端部的角运动通过位于圆柱形致动器一端的单向滚柱离合器传递到转子。全循环电动机具有位于圆柱形致动器管的另一端的第二单向离合器，使得管的两端在相反的角度方向上振动。由圆柱形致动器（定子）的两端作出的这些旋转位移通过一组单向离合器被选择性地传递到单向旋转运动中的转子。离合器以这样的方向被构建在定子管的两端中，即通过将高频机械振动转换成转子的连续（或逐步）运动来累积微小的行程。因此，压电元件中产生的功率直接转换为转子的旋转运动，因此该耦合机构产生高效率的电动机。可以通过改变致动器材料，几何形状和施加的交变电场来为每个应用定制扭转角和扭矩的特定值。

46. 发明授权

US06414418B1 Piezoelectric actuator 失效
标题翻译：压电执行器
公开(公告)号：US06414418B1
公开(公告)日：2002-07-02
申请号：US09674772
申请日：2000-12-29
申请人： Rudolf Heinz , Friedrich Boecking
发明人： Rudolf Heinz , Friedrich Boecking
IPC分类号： H01L4104
CPC分类号： H01L41/083 , F02M51/005 , F02M51/0603 , F02M63/0026 , H01L41/0475
摘要： The invention relates to a piezoelectric actuator, in particular for actuating control valves or injection valves in motor vehicles, having an actuator body in the form of a multilayered laminate made up of stacked layers of piezoelectric material with intervening metallic or electrically conductive layers that function as electrodes, which, in alternating fashion, electrically contact common electrode strips disposed on the circumference in the longitudinal direction of the actuator body, and having electrical connecting conductors which, in order to supply the operating voltage to the piezoelectric actuator, electrically contact the respective common electrode strips. On at least one end face remote from the valve, the actuator body has a covering layer made of piezoelectrically inactive ceramic material and the connecting conductors electrically contact the common electrode strips only in the vicinity of this covering layer.
摘要翻译：本发明涉及一种压电致动器，特别是用于致动机动车辆中的控制阀或喷射阀，具有致动器主体，该致动器主体为多层压层，其形式由压电材料的堆叠层构成，其中介于金属或导电层之间，其作用电极以交替的方式电气地接触设置在致动器主体的纵向方向上的圆周上的公共电极条，并且具有电连接导体，为了向压电致动器提供工作电压，电接触相应的公共端电极条。在远离阀门的至少一个端面上，致动器主体具有由压电非活性陶瓷材料制成的覆盖层，并且连接导体仅在该覆盖层附近与公共电极条电接触。

47. 发明授权

US06411009B2 Piezoelectric actuator system 失效
标题翻译：压电执行器系统
公开(公告)号：US06411009B2
公开(公告)日：2002-06-25
申请号：US09740655
申请日：2000-12-18
申请人： Peter Jaenker
发明人： Peter Jaenker
IPC分类号： H01L4104
CPC分类号： H02N2/065 , H02N2/043
摘要： A piezoelectric actuator has at least two piezoelectric actuator elements connected in series with each other mechanically and electrically and form a half bridge in an amplifier bridge circuit having a further half bridge formed by two series connected electronic switches which are operated or clocked by a control circuit such as a pulse modulator circuit for periodically energizing the piezoelectric actuators in push-pull fashion. A choke (22) is connected between the junction point (JP1) of the two piezoelectric actuators and the junction point (JP2) between the two electronic switches (23, 24) for assuring a loss free reverse charging of the two piezoelectric actuators functioning as electrical capacitors in the energizing bridge circuit (21). The choke 22 functions as an energy storage and the stored energy is used in the push-pull charging of the capacitors (19, 20) formed by the piezoelectric elements.
摘要翻译：压电致动器具有至少两个压电致动器元件，它们在机械和电气上彼此串联连接，并在放大器桥接电路中形成半桥，所述放大器桥接电路具有由两个串联连接的电子开关形成的另外的半桥，所述两个串联的电子开关由控制电路例如用于以推挽方式周期性地激励压电致动器的脉冲调制器电路。两个压电致动器的接合点（JP1）和两个电子开关（23,24）之间的接合点（JP2）之间连接有扼流圈（22），用于确保两个压电致动器的无损反向充电，其功能如通电桥电路（21）中的电容器。扼流圈22用作能量存储器，并且存储的能量用于由压电元件形成的电容器（19,20）的推挽充电。

48. 发明授权

US06376968B1 Field-induced piezoelectricity for electrical power generation 失效
标题翻译：用于发电的场致压电
公开(公告)号：US06376968B1
公开(公告)日：2002-04-23
申请号：US09074744
申请日：1998-05-08
申请人： George W. Taylor , Joseph R. Burns , Charles B. Carroll , Eric Cross
发明人： George W. Taylor , Joseph R. Burns , Charles B. Carroll , Eric Cross
IPC分类号： H01L4104
CPC分类号： H02N2/181 , Y10S310/80
摘要： An electrical energy generator relying upon piezoelectricity includes electrical generating elements comprising electroded bodies of an electrostrictive material, e.g., polyurethane, having inherent but weak piezoelectric characteristics. A d.c. bias is applied between the electrodes for field-inducing a larger piezoelectric characteristic whereby, upon applying mechanical energy to the element, in known manner, for alternately straining and destraining the body, electrical charge is generated on the electrodes with a high mechanical energy to electrical energy conversion efficiency.
摘要翻译：依靠压电性的电能发生器包括发电元件，其包括具有固有但弱的压电特性的电致伸缩材料例如聚氨酯的电极体。一个d.c. 在电极之间施加偏压以用于感应更大的压电特性，由此，以已知的方式向元件施加机械能，为了交替地应变和消除体，在电极上产生具有高机械能到电的电荷能量转换效率。

49. 发明授权

US06369487B1 Piezoelectric resonance component 有权
标题翻译：压电谐振分量
公开(公告)号：US06369487B1
公开(公告)日：2002-04-09
申请号：US09536887
申请日：2000-03-28
申请人： Eitaro Kameda , Toshiyuki Baba , Jiro Inoue , Shoichi Kawabata
发明人： Eitaro Kameda , Toshiyuki Baba , Jiro Inoue , Shoichi Kawabata
IPC分类号： H01L4104
CPC分类号： H03H9/1014 , H03H9/0557 , H03H9/178
摘要： A piezoelectric resonance component includes a capacitor substrate, a piezoelectric resonator mounted on the capacitor substrate, and a cover member fixedly attached to the capacitor substrate. The capacitor substrate includes a dielectric substrate, a plurality of inner electrodes arranged in layers within the dielectric substrate, and a plurality of outer electrodes disposed on at least one of opposed side surfaces of the dielectric substrate. The plurality of inner electrodes include an inner electrode to be connected to a ground potential and a pair of split inner electrodes located at a common vertical position and spaced apart from each other with respect to a central portion of the dielectric substrate.
摘要翻译：压电谐振部件包括电容器基板，安装在电容器基板上的压电谐振器和固定地附接到电容器基板的盖部件。所述电容器基板包括电介质基板，在所述电介质基板内分层配置的多个内部电极以及设置在所述电介质基板的至少一个相对侧面上的多个外部电极。多个内部电极包括要连接到地电位的内部电极和位于公共垂直位置并且相对于电介质基板的中心部彼此间隔开的一对分离的内部电极。

50. 发明授权

US06356008B1 Method of polarizing piezoelectric body 有权
标题翻译：极化压电体的方法
公开(公告)号：US06356008B1
公开(公告)日：2002-03-12
申请号：US09627771
申请日：2000-07-28
申请人： Mikio Nakajima
发明人： Mikio Nakajima
IPC分类号： H01L4104
CPC分类号： H01L41/083 , H01L41/257 , Y10T29/42
摘要： A method of polarizing a piezoelectric body having a plurality of piezoelectric layers and internal electrodes which are alternately laminated, includes the steps of applying an electric field to the piezoelectric body to polarize the body uniformly in the thickness direction, applying electric field in the opposite directions to the piezoelectric layers on both sides of each internal electrode whereby the piezoelectric layer only on one side of the internal electrode is polarization-inverted. The polarization degree polarization is made uniform by the polarization-inversion.
摘要翻译：将具有交替层叠的多个压电层和内部电极的压电体偏振的方法包括以下步骤：向压电体施加电场，使其在厚度方向上均匀地偏振身体，在相反方向施加电场到每个内部电极的两侧的压电层，由此仅在内部电极的一侧上的压电层被极化反转。通过极化反转使偏振度极化一致。

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