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31. 发明授权

US4698541A Broad band acoustic transducer 失效
标题翻译：宽带声换能器
公开(公告)号：US4698541A
公开(公告)日：1987-10-06
申请号：US755009
申请日：1985-07-15
申请人： Yoseph Bar-Cohen
发明人： Yoseph Bar-Cohen
IPC分类号： B06B1/06 , G10K11/00 , H01L41/08
CPC分类号： B06B1/067 , G10K11/002
摘要： There is provided by this invention a broad band acoustic transducer comprising a piezoelectric crystal with a two layer dampening backing having very high attenuation properties. Each layer has an impedance matching the acoustical impedance of the crystal, however, the second layer has an attenuating additive that greatly increases its attenuation factor. The surface interface between the two dampening layers is tilted and roughened to induce wave scattering that prevents back reflections.
摘要翻译：本发明提供了一种宽带声换能器，其包括具有非常高衰减特性的双层衰减背衬的压电晶体。每个层具有与晶体的声阻抗匹配的阻抗，然而，第二层具有大大增加其衰减因子的衰减添加剂。两个阻尼层之间的表面界面被倾斜和粗糙化，以引起波浪散射，从而防止后反射。

32. 发明授权

US4581070A Multiphase backing materials for piezoelectric broadband transducers 失效
公开(公告)号：US4581070A
公开(公告)日：1986-04-08
申请号：US638077
申请日：1984-08-06
申请人： Yoseph Bar-Cohen , David A. Stubbs , Wally C. Hoppe
发明人： Yoseph Bar-Cohen , David A. Stubbs , Wally C. Hoppe
IPC分类号： G10K11/00 , G10K11/16 , B22F3/00 , B22F3/12 , B22F3/24
CPC分类号： G10K11/165 , G10K11/002 , Y10S428/929 , Y10T428/12014 , Y10T428/12181
摘要： An acoustical transducer is provided with an acoustically absorbant backing material having an acoustical impedance precisely matching the impedance of the piezoelectric element in the transducer. The backing material is a multiphase mixture of selected materials, such as a low melting point alloy (InPb) and one or more powders having high impedance characteristics (tungsten and copper). The slope of the curve impedance versus volume fraction of the backing components is low, thus allowing the impedance of the material to be precisely controlled. The backing material is preferably electrically conductive and is fuzed to one surface of the piezoelectric element to further improve the output characteristics of the transducer.

33. 发明授权

US4482835A Multiphase backing materials for piezoelectric broadband transducers 失效
标题翻译：用于压电宽带换能器的多相背衬材料
公开(公告)号：US4482835A
公开(公告)日：1984-11-13
申请号：US493099
申请日：1983-05-09
申请人： Yoseph Bar-Cohen , David A. Stubbs , Wally C. Hoppe
发明人： Yoseph Bar-Cohen , David A. Stubbs , Wally C. Hoppe
IPC分类号： G10K11/00 , G10K11/16 , H01L41/08
CPC分类号： G10K11/165 , G10K11/002
摘要： An acoustical transducer is provided with an acoustically absorbant backing material having an acoustical impedance precisely matching the impedance of the piezoelectric element in the transducer. The backing material is a multiphase mixture of selected materials, such as a low melting point alloy (InPb) and one or more powders having high impedance characteristics (tungsten and copper). The slope of the curve impedance versus volume fraction of the backing components is low, thus allowing the impedance of the material to be precisely controlled. The backing material is preferably electrically conductive and is fuzed to one surface of the piezoelectric element to further improve the output characteristics of the transducer.
摘要翻译：声学传感器设置有吸声背衬材料，其具有与换能器中的压电元件的阻抗精确匹配的声阻抗。背衬材料是所选材料的多相混合物，例如低熔点合金（InPb）和一种或多种具有高阻抗特性（钨和铜）的粉末。曲线阻抗对背衬组件的体积分数的斜率较低，从而允许材料的阻抗被精确控制。背衬材料优选是导电的并且被固定到压电元件的一个表面以进一步改善换能器的输出特性。

34. 发明授权

US09404891B2 Apparatus for and method of monitoring condensed water in steam pipes at high temperature 有权
标题翻译：高温蒸汽管道冷凝水监测装置及方法
公开(公告)号：US09404891B2
公开(公告)日：2016-08-02
申请号：US14109470
申请日：2013-12-17
申请人： Shyh-Shiuh Lih , Hyeong Jae Lee , Yoseph Bar-Cohen , Xiaoqi Bao
发明人： Shyh-Shiuh Lih , Hyeong Jae Lee , Yoseph Bar-Cohen , Xiaoqi Bao
IPC分类号： G01N29/024 , G01F23/296 , G01N29/44 , G01N29/50
CPC分类号： G01N29/024 , G01F23/2962 , G01N29/4472 , G01N29/50 , G01N2291/02836 , G01N2291/044 , G01N2291/101
摘要： A system and method for monitoring the properties of a fluid, such as water, in a steam pipe without mechanically penetrating the wall of the pipe. The system uses a piezoelectric transducer to launch an ultrasonic probe signal into the pipe. Reflected ultrasonic signals are captured in a transducer, which can be the same transducer that launched the probe signal. The reflected signals are subjected to data processing, which can include filtering, amplification, analog-to-digital conversion and autocorrelation analysis. A result is extracted which is indicative of a property of the fluid, such as a height of the condensed fluid, a cavitation of the condensed fluid, and a surface perturbation of the condensed fluid. The result can be recorded, displayed, and/or transmitted to another location. One embodiment of the system has been constructed and tested based on a general purpose programmable computer using instructions recorded in machine-readable non-volatile memory.
摘要翻译：一种用于在蒸汽管中监测流体（例如水）的性质而不机械地穿透管壁的系统和方法。该系统使用压电换能器将超声波探头信号发射到管道中。反射的超声信号被捕获在传感器中，该传感器可以是发射探测信号的相同传感器。反射信号经受数据处理，其可以包括滤波，放大，模数转换和自相关分析。提取表示流体的性质的结果，例如冷凝流体的高度，冷凝流体的空化以及冷凝流体的表面扰动。结果可以被记录，显示和/或传输到另一个位置。已经基于使用记录在机器可读非易失性存储器中的指令的通用可编程计算机构造和测试了该系统的一个实施例。

35. 发明授权

US08910727B2 Ultrasonic/sonic jackhammer 有权
标题翻译：超声波/声波手枪
公开(公告)号：US08910727B2
公开(公告)日：2014-12-16
申请号：US11700575
申请日：2007-01-31
申请人： Yoseph Bar-Cohen , Stewart Sherrit , Jack L. Herz
发明人： Yoseph Bar-Cohen , Stewart Sherrit , Jack L. Herz
IPC分类号： B25D11/00 , B25D11/06
CPC分类号： B25D11/064 , B25D11/00 , B25D2250/311 , Y10S173/02
摘要： The invention provides a novel jackhammer that utilizes ultrasonic and/or sonic vibrations as source of power. It is easy to operate and does not require extensive training, requiring substantially less physical capabilities from the user and thereby increasing the pool of potential operators. An important safety benefit is that it does not fracture resilient or compliant materials such as cable channels and conduits, tubing, plumbing, cabling and other embedded fixtures that may be encountered along the impact path. While the ultrasonic/sonic jackhammer of the invention is able to cut concrete and asphalt, it generates little back-propagated shocks or vibrations onto the mounting fixture, and can be operated from an automatic platform or robotic system.
摘要翻译：本发明提供了一种利用超声波和/或声波振动作为功率源的新型手提锤。它易于操作，不需要大量的培训，从而使用户的身体能力要求更低，从而增加潜在操作员的数量。重要的安全优点是它不会破坏弹性或柔性材料，例如可能沿冲击路径遇到的电缆通道和管道，管道，管道，布线和其他嵌入式固定装置。虽然本发明的超声波/超音速手推刀能够切割混凝土和沥青，但是它在安装夹具上产生很少的反向传播的冲击或振动，并且可以从自动平台或机器人系统操作。

36. 发明申请

US20140153368A1 COMMUNICATION IN PIPES USING ACOUSTIC MODEMS THAT PROVIDE MINIMAL OBSTRUCTION TO FLUID FLOW 有权
标题翻译：使用提供最小化流体流动的声学模式的管道中的通信
公开(公告)号：US20140153368A1
公开(公告)日：2014-06-05
申请号：US13913044
申请日：2013-06-07
申请人： Yoseph Bar-Cohen , Eric D. Archer , Xiaoqi Bao , Stewart Sherrit
发明人： Yoseph Bar-Cohen , Eric D. Archer , Xiaoqi Bao , Stewart Sherrit
IPC分类号： G10K11/18 , E21B47/14
CPC分类号： G10K11/18 , A61B8/4483 , A61B8/4488 , E21B47/14 , E21B47/18 , G10K11/34
摘要： A plurality of phased array acoustic communication devices are used to communicate data along a tubulation, such as a well. The phased array acoustic communication devices employ phased arrays of acoustic transducers, such as piezoelectric transducers, to direct acoustic energy in desired directions along the tubulation. The system is controlled by a computer-based controller. Information, including data and commands, is communicated using digital signaling.
摘要翻译：多个相控阵声学通信装置用于沿着诸如井的管道传送数据。相控阵声学通信装置使用诸如压电换能器之类的声换能器的相控阵列，以沿着管道将理想的方向引导声能。该系统由基于计算机的控制器控制。使用数字信号传送包括数据和命令的信息。

37. 发明授权

US07824247B1 Portable rapid and quiet drill 有权
标题翻译：便携式快速安静的钻孔
公开(公告)号：US07824247B1
公开(公告)日：2010-11-02
申请号：US11756819
申请日：2007-06-01
申请人： Yoseph Bar-Cohen , Mireca Badescu , Xiaoqi Bao , Zenshea Chang , Stewart Sherrit
发明人： Yoseph Bar-Cohen , Mireca Badescu , Xiaoqi Bao , Zenshea Chang , Stewart Sherrit
IPC分类号： H02N2/00 , E21B3/00 , B24B23/03
CPC分类号： B23B37/00 , B23B45/001 , B23B2226/75 , B23B2260/108 , Y10S408/70 , Y10S451/91
摘要： A hand-held drilling device, and method for drilling using the device, has a housing, a transducer within the housing, with the transducer effectively operating at ultrasonic frequencies, a rotating motor component within the housing and rigid cutting end-effector rotationally connected to the rotating motor component and vibrationally connected to the transducer. The hand-held drilling device of the present invention operates at a noise level of from about 50 decibels or less.
摘要翻译：一种手持式钻孔装置和使用该装置进行钻孔的方法，具有壳体，壳体内的换能器，换能器有效地以超声波频率运转，壳体内的旋转马达部件和刚性切割端部执行器旋转地连接到旋转电机部件并振动地连接到换能器。本发明的手持式钻孔装置以约50分贝或更小的噪音水平运行。

38. 发明授权

US6092421A Ultrasonic system for automatic determination of material stiffness constants 失效
标题翻译：超声波系统用于自动测定材料刚度常数
公开(公告)号：US6092421A
公开(公告)日：2000-07-25
申请号：US188703
申请日：1998-08-28
申请人： Yoseph Bar-Cohen , Shyh-Shiuh Lih
发明人： Yoseph Bar-Cohen , Shyh-Shiuh Lih
IPC分类号： G01N29/04 , G01N29/22
CPC分类号： G01N29/041 , G01N29/223 , G01N29/2487 , G01N2291/0231 , G01N2291/0258 , G01N2291/0423 , G01N2291/0427 , G01N2291/057 , G01N2291/102
摘要： A system which rapidly determines the elastic stiffness constants of materials in plate shape as well as characterize material flaws that are affecting these constants. Rapid (below a minute) nondestructive evaluation system allow for the determination of material stiffness constants, low noise data acquisition algorithm for measuring spectral data. A real time method of displaying leaky Lamb wave spectral data.
摘要翻译：快速确定板形材料的弹性刚度常数以及影响这些常数的材料缺陷的特征的系统。快速（低于一分钟）非破坏性评估系统允许确定材料刚度常数，用于测量光谱数据的低噪声数据采集算法。显示泄漏的兰姆波谱数据的实时方法。

39. 发明授权

US5961298A Traveling wave pump employing electroactive actuators 失效
标题翻译：行波泵采用电动执行机构
公开(公告)号：US5961298A
公开(公告)日：1999-10-05
申请号：US673648
申请日：1996-06-25
申请人： Yoseph Bar-Cohen , Benjamin Joffe , Shyh-Shiuh Lih
发明人： Yoseph Bar-Cohen , Benjamin Joffe , Shyh-Shiuh Lih
IPC分类号： F04B17/00 , F04B19/00
CPC分类号： F04B17/003 , F04B19/006
摘要： A traveling wave pump which employs one or more pairs of interfacing plates to transfer fluid (gas or liquid) from one or more inlets to one or more outlets. At least one of the plates in each pair of interfacing plates is driven so as to produce a flexure traveling wave therein. Actuators incorporating electroactive elements are used to drive the driven plates and create the flexure traveling wave. This wave causes chambers to form between the interfacing plates which move from one end of the driven plate to the other in the direction of the wave. Fluid is drawn into a forming chamber, and eventually the forming chamber closes trapping the fluid therein. The fluid is then transported through the pump by the now completely formed chamber as it propagates along the plate interface. If only one of the interfacing plates is driven, the other remains fixed in that no chambers are formed at its surface. However, where both plates are driven, the traveling waves therein are synchronized and coincident chambers are formed at the surface of both plates, thereby doubling the amount of fluid pumped. In addition, the flow direction can be changed by controlling the phase of the drive signals.
摘要翻译：一种行波泵，其使用一对或多对接口板将流体（气体或液体）从一个或多个入口传送到一个或多个出口。每对接口板中的至少一个板被驱动以在其中产生弯曲行波。采用电动元件的执行器用于驱动从动板并产生弯曲行波。该波形使得在从驱动板的一端向波浪方向移动的接口板之间形成室。流体被吸入成形室，并且最终成形室将其中的流体闭合。然后，当流体沿着板接口传播时，流体被现在完全形成的室传送通过泵。如果只有一个接口板被驱动，另一个保持固定，因为在其表面上没有形成腔室。然而，当两个板被驱动时，其中的行波是同步的，并且在两个板的表面上形成一致的室，从而使被泵送的流体的数量增加一倍。此外，可以通过控制驱动信号的相位来改变流动方向。

40. 发明授权

US5855565A Cardiovascular mechanically expanding catheter 失效
标题翻译：心血管机械扩张导管
公开(公告)号：US5855565A
公开(公告)日：1999-01-05
申请号：US861374
申请日：1997-05-22
申请人： Yaniv Bar-Cohen , Willem Grandia , Yoseph Bar-Cohen
发明人： Yaniv Bar-Cohen , Willem Grandia , Yoseph Bar-Cohen
IPC分类号： A61F2/06 , A61F2/84 , A61M29/00
CPC分类号： A61M29/02 , A61F2/958 , A61M2025/0058
摘要： A cardiovascular mechanically expanding catheter apparatus in accordance with the invention generally includes a catheter having a mechanically expanding mechanism on a distal end thereof for dilating vessels such as arteries and other endoluminal structures and for the deployment of intraluminal stents. A permeable, mechanical dilating mechanism includes a pair of expanders which provide a radial force against walls of the vessel in response to a pulling or contracting longitudinal force on the dilating mechanism, by means of a cable for example. A set of adjacent quadrates are preferably provided for promoting uniformity of pressure by the expanders. An elastomer sleeve may be provided for protecting the vessel during the surgical procedure.
摘要翻译：根据本发明的心血管机械膨胀导管装置通常包括在其远端具有机械扩张机构的导管，用于扩张血管如动脉和其它内腔结构以及用于部署腔内支架。可渗透的机械扩张机构包括一对膨胀器，其通过例如电缆例如响应于膨胀机构上的拉伸或收缩纵向力而提供抵抗容器壁的径向力。优选地设置一组相邻的四边形以促进膨胀器的压力均匀性。可以提供弹性体套筒以在外科手术过程中保护血管。

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