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公开(公告)号：US4478217A
公开(公告)日：1984-10-23
申请号：US358213
申请日：1982-03-15
申请人： Tamotsu Shimada , Akio Kumada , Daizo Tokinaga , Chiaki Shinbo , Hideyuki Horiuchi , Masamoto Takatsuji
发明人： Tamotsu Shimada , Akio Kumada , Daizo Tokinaga , Chiaki Shinbo , Hideyuki Horiuchi , Masamoto Takatsuji
CPC分类号： A61B18/20 , A61B2018/00636
摘要： In a laser surgical apparatus having a laser oscillator operable to oscillate to produce a laser beam, and an optical path connected to the laser oscillator for transmission of the laser beam, a hand piece at the fore end of the optical path is equipped with a vibrator element comprised of a piezoelectric transducer, and the vibrator element applies a vibration to the hand piece.
摘要翻译： 在具有可操作以振荡以产生激光束的激光振荡器的激光手术装置和连接到激光振荡器以用于激光束传输的光路中，在光路前端的手持件配备有振动器 元件由压电换能器组成，振动元件对手柄施加振动。
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公开(公告)号：US4367504A
公开(公告)日：1983-01-04
申请号：US250432
申请日：1981-04-02
申请人： Takeo Seki , Yukio Shinoda , Akio Kumada
发明人： Takeo Seki , Yukio Shinoda , Akio Kumada
CPC分类号： G11B5/592 , H01L41/094 , H01L41/0946
摘要： A piezo-electric bimorph type transducer of a cantilever type for controlling the scan tracking of a magnetic tape by a rotating head in a helical-scan-type video tape recorder. In this transducer, piezo-electric thin plates which constitute a piezo-electric bimorph are formed in a different shape from the electrodes attached to the piezo-electric thin plates, and the width of the electrodes is smaller than the width of the piezo-electric thin plates in the direction from a fixed end of the transducer toward a movable end of the same, whereby in the bimorph element, a predetermined relationship is attained between the bending moment produced by a control voltage applied to the electrodes and the innertia generated in a dynamic condition, and the displacement of the magnetic head caused by the piezo-electric bimorph type transducer is in static and dynamic conformity, so that the tracking control is correctly carried out.
摘要翻译： 一种用于通过螺旋扫描式录像机中的旋转头来控制磁带的扫描跟踪的悬臂式压电双压电晶片式换能器。 在该换能器中，构成压电双压电晶片的压电薄板形成为与安装在压电薄板上的电极不同的形状，电极的宽度小于压电 在从传感器的固定端朝向可移动端的方向上的薄板，由此在双压电晶片元件中，通过施加到电极的控制电压产生的弯曲力矩和在电极中产生的内力之间获得预定的关系 动态条件，由压电双压电晶片式传感器引起的磁头位移处于静态和动态一致性，从而正确执行跟踪控制。
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公开(公告)号：US4088391A
公开(公告)日：1978-05-09
申请号：US626996
申请日：1975-10-29
申请人： Akio Kumada , Hiroshi Takano , Yoshizumi Eto , Masao Hibi
发明人： Akio Kumada , Hiroshi Takano , Yoshizumi Eto , Masao Hibi
摘要： An element in which only a single domain-wall can move sidewise, having a crystal plate of an irregular ferroelectric which is Z-plated at opposite surfaces and is then cut or cleaved in the direction at its periphery and transparent electrodes for the polarization reversal provided at the central portions of the opposite Z-planes. The element includes at least a domain configuration such that two nucleus regions of opposite polarities are disposed on opposite sides of the region where the electrodes are provided.
摘要翻译： 其中只有一个畴壁可以侧向移动的元件，具有不规则铁电体的晶体板，其在相对表面上镀锌，然后在其周边沿<110>方向切割或切割，并且为 设置在相对Z平面的中心部分处的极化反转。 该元件至少包括一个域结构，使得具有相反极性的两个核区域设置在设置电极的区域的相对侧上。
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14.发明授权
公开(公告)号：US3973247A
公开(公告)日：1976-08-03
申请号：US459123
申请日：1974-04-08
申请人： Akio Kumada , Koji Ishida
发明人： Akio Kumada , Koji Ishida
IPC分类号： G11C11/42 , C04B35/46 , C04B35/48 , C04B35/50 , C04B35/51 , G02F1/055 , G09F9/30 , G09G3/16 , G11C11/22 , G11C13/04 , H01G7/02
CPC分类号： H01G7/026 , C04B35/46 , C04B35/48 , C04B35/50 , C04B35/51 , G02F1/055 , G11C11/22 , G11C13/047
摘要： An information is written or erased in such way that, while a memory employing electrooptic ceramics wherein a ferroelectric phase and an anti-ferroelectric phase (or paraelectric phase) coexist having a morphotropic phase boundary is being heated to a temperature at which the polymorphic base boundary of the ceramic material occurs, an electric field opposite in polarity to the spontaneous polarization of the memory is applied to the material.According to the writing or erasing method, the writing of the information into the memory employing the material or the erasure of the information can be perfectly performed.
摘要翻译： 以这样的方式写入或擦除信息，即，使用电光学陶瓷的存储器，其中铁电相和反铁电相（或顺电相）共存具有正电相界面的存储器被加热到多晶基底边界 发生与材料的自发极化极性相反的电场。
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公开(公告)号：US4947076A
公开(公告)日：1990-08-07
申请号：US285394
申请日：1988-12-16
申请人： Akio Kumada
发明人： Akio Kumada
CPC分类号： H02N2/103 , H02N2/0045 , H02N2/106
摘要： A piezoelectric motor comprising a movable element having a first flat surface, vibration elements formed by combination of at least one twisting vibration member vibrating in a twisting manner and at least one piezoelectric element acting to vibrate the twisting vibration member. The vibration elements have a second flat surface adapted to abut against the first flat surface so that the movable element can be driven by surface contact between the first flat surface and the second flat surface.
摘要翻译： 一种压电电动机，包括具有第一平坦表面的可移动元件，通过组合至少一个以扭转方式振动的扭转振动元件和用于振动所述扭转振动元件的至少一个压电元件形成的振动元件。 振动元件具有适于抵靠第一平坦表面的第二平坦表面，使得可移动元件可以通过第一平坦表面和第二平坦表面之间的表面接触来驱动。
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公开(公告)号：US4868446A
公开(公告)日：1989-09-19
申请号：US174413
申请日：1988-03-28
申请人： Akio Kumada
发明人： Akio Kumada
摘要： A piezoelectric revolving resonator comprising a circular or cylindrical transducer element, in which the center of gravity of the resonator revolves eccentrically around the center of an original circle as a result of resonance thereof upon excitation of the 1st order resonance frequency. Also, the ultrasonic motor is disclosed comprising a resonator of gravity center revolution type with the center of gravity thereof revolving in reversibly clockwise or counterclockwise direction and a rotor pressure fitted on the resonator, the motor utilizing the rotational torque received by the motor through a frictional force.
摘要翻译： 一种包括圆形或圆柱形换能器元件的压电旋转谐振器，其中由于在一阶谐振频率的激励下谐振，谐振器的重心围绕原圆的中心偏心旋转。 此外，公开了一种超声波马达，其包括重心为中心的谐振器，其重心以可逆的顺时针或逆时针方向旋转，并且转子压力安装在谐振器上，该马达利用马达接收的转矩通过摩擦 力。
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公开(公告)号：US4663556A
公开(公告)日：1987-05-05
申请号：US688947
申请日：1985-01-04
申请人： Akio Kumada
发明人： Akio Kumada
CPC分类号： H02N2/123 , H02N2/0045 , H02N2/103
摘要： A torsional mode ultrasonic vibrator is formed by integrally combining a piezoelectric thickness vibrating element and a cylindrical torsional mode resonator. Furthermore, a torsional mode piezoelectric motor is provided in such a manner that a rotor and a stator are pressed to each other so that a rotational torque can be generated by the vibration at the contacting surfaces therebetween and a piezoelectric thickness vibrator and a torsional mode ultrasonic vibrator formed by an integral combination of a torsion coupler and a torsional mode ultrasonic resonator are used as the source of the ultrasonic vibration.
摘要翻译： 通过整体地组合压电厚度振动元件和圆柱形扭转模式谐振器来形成扭转模式超声波振动器。 此外，扭矩模式压电电动机以这样的方式设置，使得转子和定子彼此压紧，使得通过其间的接触表面处的振动产生旋转扭矩，并且压电厚度振动器和扭转模式超声波 使用由扭转耦合器和扭转模式超声波谐振器的整体组合形成的振动器作为超声波振动源。
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公开(公告)号：US4642509A
公开(公告)日：1987-02-10
申请号：US831578
申请日：1986-02-21
申请人： Akio Kumada
发明人： Akio Kumada
CPC分类号： H02N2/0045 , H02N2/103
摘要： An ultrasonic motor having a cantilever type longitudinal/torsional vibration coupling element with a beam and a rotor rotated by the vibration of the beam. The rotor is provided with contacting surface for only contacting the beam in the outer peripheral portion of the surface of the beam away from the torsional vibration axis of the beam.
摘要翻译： 一种具有悬臂式纵向/扭转振动耦合元件的超声波马达，其具有梁和由梁的振动旋转的转子。 转子设置有接触表面，用于仅使梁的表面的外周部分中的梁远离梁的扭转振动轴线接触。
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公开(公告)号：US4471258A
公开(公告)日：1984-09-11
申请号：US319312
申请日：1981-11-09
申请人： Akio Kumada
发明人： Akio Kumada
摘要： In a transducer including at least a piezoelectric ceramic plate which has curved surfaces, electrodes which are formed on both the main surfaces of the piezoelectric ceramic plate, a frame which holds the piezoelectric ceramic plate, and means for applying an electric signal to the electrodes; this invention is characterized in that the holding frame is made of an organic high-polymer resin. Since the piezoelectric ceramic plate has the curved surfaces and the holding frame is made of the organic high-polymer resin, the transducer is suitable as a loudspeaker for audio use having a wide frequency band.
摘要翻译： 在至少具有弯曲表面的压电陶瓷板的换能器中，形成在压电陶瓷板的两个主表面上的电极，保持压电陶瓷板的框架和用于向电极施加电信号的装置; 本发明的特征在于，保持框架由有机高分子树脂制成。 由于压电陶瓷板具有弯曲表面，并且保持框架由有机高分子树脂制成，因此该换能器适用于具有宽频带的用于音频的扬声器。
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公开(公告)号：USRE28971E
公开(公告)日：1976-09-21
申请号：US218567
申请日：1972-01-17
申请人： Akio Kumada , Keiichiro Aizu , Yoshio Furuhata
发明人： Akio Kumada , Keiichiro Aizu , Yoshio Furuhata
摘要： A device for modulating and a nondestructive readout storage device employing modulation of light transmitted through an irregular ferroelectric crystal before and after the rotation of the vibration plane thereof caused by an applied electric field equal to or larger than the coercive field thereof.
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