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1. 发明授权

US5495137A Proximity sensor utilizing polymer piezoelectric film with protective metal layer 失效
标题翻译：接近传感器采用具有保护金属层的聚合物压电薄膜
公开(公告)号：US5495137A
公开(公告)日：1996-02-27
申请号：US298864
申请日：1994-08-31
申请人： Kyung T. Park , Minoru Toda
发明人： Kyung T. Park , Minoru Toda
IPC分类号： H04R17/00 , B06B1/06 , G01D5/48 , G01D11/24 , G01S7/521 , G01S7/524 , G01S15/02 , G01S15/04 , G01S15/87 , G01S15/93 , G10K9/125 , H01L41/08
CPC分类号： B06B1/0688 , B06B1/0692 , G01D11/245 , G01D5/48 , G01S15/02 , G01S15/87 , G01S15/931 , G01S7/521 , G01S7/524 , G10K9/125 , G01S2015/938 , Y10S310/80
摘要： An ultrasonic proximity sensor particularly suited for outdoor environments having a transducer including a polymer piezoelectric film bonded to a protective metal layer. The transducer is mounted in the sensor housing so that the protective metal layer is exposed to the environment through a window of the sensor housing. The transducer can be implemented as an asymmetric bimorph structure, having an electrode bonded to a surface of the polymer piezoelectric film opposite the protective metal layer and between support members. Deformation of the polymer piezoelectric film between the protective metal layer and the electrode occurs upon application of a voltage thereto, generating an ultrasonic wave. The transducer can also be used as a receiver, generating an output voltage from the electrode upon impingement of an ultrasonic wave upon the protective metal layer. The transducer can also be implemented as a curved length mode transducer including an arcuate shaped support member for supporting the polymer piezoelectric film to be curved between the support members. The radius of the curved length mode transducer is selected so that the transducer can be resonant at the resonance frequency of the curved length mode, therefore vibrating at high frequency to generate an ultrasonic wave.
摘要翻译：一种超声波接近传感器，特别适用于具有结合到保护金属层的聚合物压电膜的换能器的户外环境。传感器安装在传感器外壳中，使保护金属层通过传感器外壳的窗户暴露在环境中。换能器可以实现为不对称双压电晶片结构，其电极结合到与保护金属层相对的聚合物压电薄膜的表面和支撑构件之间。在保护金属层和电极之间的聚合物压电膜的变形在施加电压时发生，产生超声波。换能器也可以用作接收器，在超声波撞击保护金属层时，从电极产生输出电压。换能器还可以实现为弯曲长度模式换能器，其包括用于支撑聚合物压电膜以在支撑构件之间弯曲的弓形支撑构件。选择弯曲长度模式换能器的半径，使得换能器可以在弯曲长度模式的共振频率下共振，因此以高频振动以产生超声波。

2. 发明授权

US5201322A Device for detecting air flow through a passageway 失效
标题翻译：用于检测通过通道的气流的装置
公开(公告)号：US5201322A
公开(公告)日：1993-04-13
申请号：US501335
申请日：1990-03-28
申请人： John C. Henry , Kyung T. Park
发明人： John C. Henry , Kyung T. Park
IPC分类号： A61B5/087 , G01P13/00 , G01P13/04
CPC分类号： A61B5/087 , G01P13/0073 , G01P13/04 , Y10S73/04
摘要： A device is disclosed for detecting the presence and direction of air flow through a passageway having a first opening and a second opening for air to flow therethrough in either a first direction or a second direction. The device comprises a piezoelectric sensor located within the passageway. A flow director is provided within the passageway for directing air flow through the passageway for impingement upon the sensor. The sensor generates a first electrical signal when air flows through the passageway in the first direction and a second electrical signal when air flows through the passageway in the second direction. A discriminator is electrically connected to the sensor for receiving the first and second electrical signals and for discriminating between the two signals to identify the direction of air flow through the passageway.
摘要翻译：公开了一种用于检测通过具有第一开口和第二开口的通道的空气流的存在和方向的装置，用于空气在第一方向或第二方向上流过其中。该装置包括位于通道内的压电传感器。通道内设有导流器，用于引导空气流通过通道以冲击传感器。当空气在第一方向上流过通道时，传感器产生第一电信号，当空气在第二方向上流过通道时，该传感器产生第一电信号。鉴别器电连接到传感器，用于接收第一和第二电信号，并且用于区分两个信号以识别通过通道的空气流动的方向。

3. 发明授权

US5089741A Piezofilm impact detector with pyro effect elimination 失效
标题翻译： Piezofilm冲击检测器具有消除热效应
公开(公告)号：US5089741A
公开(公告)日：1992-02-18
申请号：US555245
申请日：1990-07-19
申请人： Kyung T. Park , R. Fredrick Gastgeb , Gregory Daniels
发明人： Kyung T. Park , R. Fredrick Gastgeb , Gregory Daniels
IPC分类号： H01L41/113
CPC分类号： H01L41/1132 , Y10S310/80
摘要： A structure for a piezo film impact detector eliminates or minimizes false outputs due to pyroelectric effects. The detector structure has particular application to outdoor and underground use.
摘要翻译：用于压电膜冲击检测器的结构消除或最小化由于热电效应引起的假输出。检测器结构特别适用于室外和地下使用。

4. 发明授权

US5483501A Short distance ultrasonic distance meter 失效
标题翻译：短距离超声波距离计
公开(公告)号：US5483501A
公开(公告)日：1996-01-09
申请号：US236907
申请日：1994-04-29
申请人： Kyung T. Park , Minoru Toda
发明人： Kyung T. Park , Minoru Toda
IPC分类号： H04R17/00 , B06B1/06 , G01D5/48 , G01D11/24 , G01S7/521 , G01S7/524 , G01S15/02 , G01S15/04 , G01S15/87 , G01S15/93 , G10K9/125
CPC分类号： G01S15/931 , B06B1/0688 , G01D11/245 , G01D5/48 , G01S15/02 , G01S15/87 , G01S7/521 , G01S7/524 , G10K9/125 , G01S2015/938 , Y10S310/80
摘要： A short distance ultrasonic distance meter is disclosed with provisions to reduce the ill-effects of ringing when measurements are of obstacles closer than about ten inches. In one embodiment an opposite phase ultrasonic wave is introduced by a circuit (245) and in another embodiment a strain sensor (232) introduces negative feedback to effect cancellation of ringing (147). Finally, in a third embodiment, both the negative feedback and opposite phase methods are employed for optimal results.
摘要翻译：公开了一种短距离超声波距离计，用于在测量距离近于10英寸的障碍物时减少振铃的不良影响。在一个实施例中，相位相位超声波由电路（245）引入，在另一个实施例中，应变传感器（232）引入负反馈以实现振铃消除（147）。最后，在第三实施例中，采用负反馈和反相方法来获得最佳结果。

5. 发明授权

US5424716A Penetration detection system 失效
标题翻译：穿透检测系统
公开(公告)号：US5424716A
公开(公告)日：1995-06-13
申请号：US957604
申请日：1992-10-06
申请人： Kyung T. Park
发明人： Kyung T. Park
IPC分类号： G08B13/00 , G08B13/20 , G08B13/22 , H01L41/04
CPC分类号： G08B13/20
摘要： A piezoelectric detecting system for detecting the opening of an enclosure without the need of an external battery or electrical system is disclosed. Several different piezoelectric sensor configurations to effect the detecting system are disclosed.
摘要翻译：公开了一种用于在不需要外部电池或电气系统的情况下检测外壳的开口的压电检测系统。公开了影响检测系统的几种不同的压电传感器配置。

6. 发明授权

US4975616A Piezoelectric transducer array 失效
标题翻译：压电换能器阵列
公开(公告)号：US4975616A
公开(公告)日：1990-12-04
申请号：US233627
申请日：1988-08-18
申请人： Kyung T. Park
发明人： Kyung T. Park
IPC分类号： G06F3/02 , H01H13/00 , H01L41/107 , H01L41/113 , H03K17/96 , H03K17/965
CPC分类号： H03K17/9643 , H03K2217/96027 , Y10S310/80
摘要： A piezoelectric transducer array comprises a plurality of piezoelectric transducer means arranged in an array. A common electrode is provided among at least a plurality of the piezoelectric transducer means. A plurality of discrete signal electrodes is operatively associated with each transducer means. The number of signal electrodes for each transducer means is the same. The surface areas of the signal electrodes for each transducer means are adapted and arranged for generating a signal unique to each transducer means. Corresponding ones of the signal electrodes of each plurality of signal electrodes are connected together with a common conductor to form a single electrical terminal. The total number of resulting electrical terminals is the same as the number of signal electrodes for each transducer means.
摘要翻译：压电换能器阵列包括以阵列布置的多个压电换能器装置。在至少多个压电换能器装置中设置公共电极。多个离散信号电极与每个换能器装置可操作地相关联。每个换能器装置的信号电极的数量是相同的。用于每个换能器装置的信号电极的表面积被适配和布置成用于产生每个换能器装置唯一的信号。每个信号电极中相应的信号电极与公共导体连接在一起形成一个电气端子。所得电端子的总数与每个换能器装置的信号电极的数量相同。

7. 发明授权

US4931019A Electrostatic image display apparatus 失效
标题翻译：静电图像显示装置
公开(公告)号：US4931019A
公开(公告)日：1990-06-05
申请号：US239258
申请日：1988-09-01
申请人： Kyung T. Park
发明人： Kyung T. Park
IPC分类号： G03G15/05 , A63H33/22 , B43L1/12 , G02F1/167 , G09F9/00 , G09F9/37
CPC分类号： G02F1/167 , A63H33/22 , B43L1/12 , B43L1/123
摘要： An electrostatic image display apparatus which uses piezoelectric film to enable a user to form images on a screen. The apparatus is contained within a housing. Supported within the housing is a common electrode. A layer of piezoelectric film is separated a distance from the common electrode by a suspension medium. The suspension medium contains electrially charged pigmented particles, the color of which contrasts with the color of the suspension medium. The housing has an opening for applying localized pressure to one surface of the piezoelectric film. In addition, the apparatus has a source for energizing the common electrode to a preselected electric potential. By applying a force or infrared energy to an area of the piezoelectric film a charge accumules on the inner surface of the film, directly under the point of application of the force. This charge attracts the electrically charged pigmented particles in the suspension medium which are visible through the film and create an image display.
摘要翻译：一种使用压电膜以使用户能够在屏幕上形成图像的静电图像显示装置。该装置包含在壳体内。在外壳内支撑是一个共同的电极。通过悬浮介质将一层压电膜与公共电极隔开一段距离。悬浮介质包含带电荷的着色颗粒，其颜色与悬浮介质的颜色形成对比。壳体具有用于将局部压力施加到压电膜的一个表面的开口。此外，该装置具有用于将公共电极激励到预选电位的源。通过对压电膜的区域施加力或红外能量，电荷在膜的内表面上直接在力的作用下积累。该电荷吸引通过膜可见的悬浮介质中的带电荷的着色颗粒并产生图像显示。

8. 发明授权

US5515341A Proximity sensor utilizing polymer piezoelectric film 失效
标题翻译：使用聚合物压电薄膜的接近传感器
公开(公告)号：US5515341A
公开(公告)日：1996-05-07
申请号：US121392
申请日：1993-09-14
申请人： Minoru Toda , Kyung T. Park , Albert Casciotti
发明人： Minoru Toda , Kyung T. Park , Albert Casciotti
IPC分类号： H04R17/00 , B06B1/06 , G01D5/48 , G01D11/24 , G01S7/521 , G01S7/524 , G01S15/02 , G01S15/04 , G01S15/87 , G01S15/93 , G10K9/125
CPC分类号： G01S15/931 , B06B1/0688 , G01D11/245 , G01D5/48 , G01S15/02 , G01S15/87 , G01S7/521 , G01S7/524 , G10K9/125 , G01S2015/938 , Y10S310/80 , Y10S367/908 , Y10S367/909
摘要： A transducer assembly for a proximity sensor which comprises an elongated polymer piezoelectric film (16). The film is supported as an elongated series of arcuate segments which are curved in the same direction and have the same radius of curvature. Electrodes (18) on both sides of the piezoelectric film form opposed pairs, each pair being associated with a respective arcuate segment. The electrodes are utilized for applying a varying electric field across the thickness of the film to cause an ultrasonic acoustic wave to be radiated from the film.
摘要翻译：一种用于接近传感器的换能器组件，其包括细长的聚合物压电薄膜（16）。该薄膜被支撑为一个细长的弧形段，它们沿同一方向弯曲并具有相同的曲率半径。压电薄膜两侧的电极（18）形成相对的对，每一对与相应的弧形段相关联。电极用于在膜的厚度上施加变化的电场，以使超声波从薄膜辐射。

9. 发明授权

US5309519A Electroacoustic novelties 失效
标题翻译：电声新奇
公开(公告)号：US5309519A
公开(公告)日：1994-05-03
申请号：US812324
申请日：1991-12-23
申请人： Kyung T. Park , Peter F. Radice
发明人： Kyung T. Park , Peter F. Radice
IPC分类号： G09F27/00 , A42B1/02 , H04R1/02 , H04R17/00 , H04R25/00
CPC分类号： H04R17/005 , H04R1/028 , H04R2201/023 , Y10S310/80
摘要： An electroacoustic novelty, particularly to the brim on an article of headware, or to a flag, containing a piezoelectric polymer film, where means are electrically coupled with electrodes on the film for applying an audio-frequency signal voltage across the film to cause the film to vibrate and emit sound waves.
摘要翻译：一种电声学新颖性，特别是一种包含压电聚合物膜的头饰物品或标志的边缘，其中装置与膜上的电极电耦合，用于在膜上施加音频信号电压以使膜振动并发出声波。

10. 发明授权

US4959807A Device for measuring the speed of a moving object 失效
标题翻译：用于测量移动物体的速度的装置
公开(公告)号：US4959807A
公开(公告)日：1990-09-25
申请号：US255932
申请日：1988-10-11
申请人： Mitchell L. Thomspon , Kyung T. Park , Kumar Ogale , William B. Powers
发明人： Mitchell L. Thomspon , Kyung T. Park , Kumar Ogale , William B. Powers
IPC分类号： G01P3/12 , G01P3/66
CPC分类号： G01P3/66
摘要： A device for measuring the speed of a moving object has first and second impact detectors separated by a preselected known distance and disposed in the path of movement of the object. As the object strikes the first and second detectors, the detectors each produce a signal. The signals are separated by a time interval indicative of the distance between the detectors. The elapsed time between the signals is measured by a counter device, and the speed of the object is calculated by a programmable device.
摘要翻译：用于测量移动物体的速度的装置具有由预定的已知距离分开的第一和第二冲击检测器，并设置在物体的运动路径中。当物体撞击第一和第二检测器时，检测器各自产生信号。这些信号以表示检测器之间的距离的时间间隔分开。信号之间的经过时间由计数器装置测量，并且由可编程装置计算物体的速度。

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