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1. 发明授权

US5012161A Power factor correction circuit 失效
公开(公告)号：US5012161A
公开(公告)日：1991-04-30
申请号：US295624
申请日：1989-01-05
申请人： Joseph C. Borowiec , Sayed-Amr El-Hamamsy
发明人： Joseph C. Borowiec , Sayed-Amr El-Hamamsy
IPC分类号： H02M1/00 , H02M1/42 , H05B41/28
CPC分类号： H02M1/425 , H05B41/28 , H02M2001/4275 , Y02B70/126
摘要： A power factor correction circuit employs a metal oxide varistor in series with a filter capacitor. The varistor provides a low-impedance path for pre-charging the filter capacitor, thus enabling the avoidance of high inrush current to circuit devices, while the filter capacitor energizes the circuit when the capacitor voltage exceeds the AC source voltage. The circuit is insensitive to normal line transients. One application is for use in a gas discharge lamp ballast.

2. 发明授权

US5629584A Accurate placement and retention of an amalgam in a electrodeless fluorescent lamp 失效
标题翻译：将汞合金准确放置和保留在无电极荧光灯中
公开(公告)号：US5629584A
公开(公告)日：1997-05-13
申请号：US448080
申请日：1995-05-23
申请人： Joseph C. Borowiec , Kenneth J. Downton , Sayed-Amr El-Hamamsy
发明人： Joseph C. Borowiec , Kenneth J. Downton , Sayed-Amr El-Hamamsy
IPC分类号： H01J7/22 , H01J9/24 , H01J9/395 , H01J61/28 , H01J65/04 , H01J17/26
CPC分类号： H01J7/22 , H01J61/28 , H01J65/048 , H01J9/245 , H01J9/395
摘要： An amalgam is accurately placed and retained in an optimized location in the exhaust tube of an electrodeless SEF lamp for operation at a mercury vapor pressure in the optimum range from approximately four to seven millitorr by forming a dimple in the exhaust tube and using a dose locating member to locate and retain the amalgam on the side of the dimple away from the core of the lamp after filling the lamp. As an alternative, two dimples may be situated on opposite sides of the exhaust tube for performing the same function as, but with less depth than, the single dimple. In another alternative embodiment, first and second dimple configurations are formed in the exhaust tube after tip-off thereof, each dimple configuration including either one or two dimples. The second dimple configuration is spaced apart from the first dimple configuration along the length of the exhaust tube. In this way, the amalgam may be initially positioned farther from the tip-off region, thereby avoiding problems during tipping off of the exhaust tube, such as loss of mercury from the lamp, or quenching of the tip which could cause stress cracks. After tip-off, the second dimple configuration allows for placement of the amalgam closer to, or preferably in contact with, the tip of the sealed exhaust tube, i.e., the coolest location in the exhaust tube.
摘要翻译：汞齐被精确地放置并保持在无电极SEF灯的排气管中的优化位置，以在约4至7毫托的最佳范围内的汞蒸汽压力下操作，通过在排气管中形成凹坑并使用剂量定位成员在填充灯泡之后，将灯泡的灯头侧面的汞齐定位并保持在远离灯芯的位置。作为替代方案，两个凹坑可以位于排气管的相对侧上，用于执行与单个凹坑相同的功能，但具有较小的深度。在另一替代实施例中，第一和第二凹坑配置在其脱开之后形成在排气管中，每个凹坑配置包括一个或两个凹坑。第二凹坑配置沿着排气管的长度与第一凹坑配置间隔开。以这种方式，汞齐可以最初位于距脱落区域更远的地方，从而避免了在排出管的脱落过程中的问题，例如灯的汞损失，或尖端的淬火，这可能引起应力裂纹。在脱落之后，第二凹坑配置允许将汞合金放置在密封排气管的末端（即排气管中的最冷的位置）上，或优选地与其接触。

3. 发明授权

US5600187A Electronically controllable capacitors using power MOSFET's 失效
标题翻译：使用功率MOSFET的电子可控电容器
公开(公告)号：US5600187A
公开(公告)日：1997-02-04
申请号：US265889
申请日：1994-06-27
申请人： Sayed-Amr El-Hamamsy , Robert S. Scott , Joseph C. Borowiec
发明人： Sayed-Amr El-Hamamsy , Robert S. Scott , Joseph C. Borowiec
IPC分类号： H01G7/00 , H05B41/28
CPC分类号： H05B41/2806 , H01G7/00 , Y02B20/22
摘要： An electrically controllable variable capacitor includes the interelectrode capacitance of at least one power MOSFET, a capacitance connected in series with the MOSFET and having one terminal connected to the drain or source thereof (the series capacitance), and bias control circuitry for controlling the bias voltage applied to the MOSFET. The voltage rating of the MOSFET, the peak amplitude of the applied ac signal, and the value of the series capacitance determine the range of dc bias voltages over which the MOSFET can be operated, and hence the capacitance range of the variable capacitor. Such a variable capacitance is useful as a tuning capacitor in an electrodeless HID lamp ballast.
摘要翻译：电可控可变电容器包括至少一个功率MOSFET的电极间电容，与MOSFET串联连接的电容，并且具有连接到其漏极或源极的一个端子（串联电容）以及用于控制偏置电压的偏置控制电路应用于MOSFET。 MOSFET的额定电压，施加的交流信号的峰值幅度和串联电容的值决定了MOSFET可以工作的直流偏置电压的范围，因此决定了可变电容器的电容范围。这种可变电容可用作无电极HID灯镇流器中的调谐电容器。

4. 发明授权

US06437568B1 Low noise MRI scanner 有权
标题翻译：低噪声MRI扫描仪
公开(公告)号：US06437568B1
公开(公告)日：2002-08-20
申请号：US09676945
申请日：2000-10-02
申请人： William Alan Edelstein , Richard Philip Mallozzi , Robert Arvin Hedeen , Sayed-Amr El-Hamamsy , Mark Lloyd Miller , Paul Shadforth Thompson , Robert Adolph Ackermann , Bruce Campbell Amm , John Peter Fura , Mike James Radziun , David Edward Dean , Scott Thomas Mansell , Dewain Anthony Purgill , Robert Michael Vavrek
发明人： William Alan Edelstein , Richard Philip Mallozzi , Robert Arvin Hedeen , Sayed-Amr El-Hamamsy , Mark Lloyd Miller , Paul Shadforth Thompson , Robert Adolph Ackermann , Bruce Campbell Amm , John Peter Fura , Mike James Radziun , David Edward Dean , Scott Thomas Mansell , Dewain Anthony Purgill , Robert Michael Vavrek
IPC分类号： G01V300
CPC分类号： G01R33/3854
摘要： A low noise imaging apparatus for producing Magnetic Resonance (MR) images of a subject and for substantially minimizing acoustic noise generated during imaging is provided. The imaging apparatus comprises a magnet assembly, a gradient coil assembly, and a rf coil assembly, wherein at least one of the magnet assembly, the gradient coil assembly and the rf coil assembly are configured to reduce the generation and transmission of acoustic noise.
摘要翻译：提供了用于产生受试者的磁共振（MR）图像并且用于基本上最小化在成像期间产生的声学噪声的低噪声成像装置。成像设备包括磁体组件，梯度线圈组件和射频线圈组件，其中磁体组件，梯度线圈组件和射频线圈组件中的至少一个被配置为减少声学噪声的产生和传输。

5. 发明授权

US5532512A Direct stacked and flip chip power semiconductor device structures 失效
标题翻译：直接堆叠和倒装芯片功率半导体器件结构
公开(公告)号：US5532512A
公开(公告)日：1996-07-02
申请号：US316996
申请日：1994-10-03
申请人： Raymond A. Fillion , Eric J. Wildi , Charles S. Korman , Sayed-Amr El-Hamamsy , Steven M. Gasworth , Michael W. DeVre , James F. Burgess
发明人： Raymond A. Fillion , Eric J. Wildi , Charles S. Korman , Sayed-Amr El-Hamamsy , Steven M. Gasworth , Michael W. DeVre , James F. Burgess
IPC分类号： H01L25/07 , H02M7/00 , H01L23/02 , H01L23/48 , H05K7/20
CPC分类号： H01L25/074 , H01G4/306 , H01L25/071 , H02M7/003 , H01L2224/73253 , H01L2924/01322 , H01L2924/1305 , H01L2924/13055 , H01L2924/13091 , H01L2924/3011
摘要： Power semiconductor device structures and assemblies with improved heat dissipation characteristics and low impedance interconnections include a thermally-conductive dielectric layer, such as diamondlike carbon (DLC) overlying at least portions of the active major surface of a semiconductor chip, with vias formed in the dielectric layer in alignment with contact pads on the active major surface. A patterned metallization layer is formed over the thermally-conductive dielectric layer, with portions of the metallization layer extending through the vias into electrical contact with the chip contact pads. A metal structure is electrically and thermally coupled to selected areas of the patterned metallization, such as by solder bonding or by a eutectic bonding process. In different embodiments, the metal structure may comprise a metal conductor bonded to the opposite major surface of another power semiconductor device structure, a heat-dissipating device-mounting structure, or simply a low-impedance lead.
摘要翻译：具有改善的散热特性和低阻抗互连的功率半导体器件结构和组件包括导热介电层，例如覆盖在半导体芯片的有源主表面的至少一部分上的类金刚石碳（DLC），以及在电介质中形成的通孔层与主动主表面上的接触垫对准。图案化的金属化层形成在导热电介质层之上，金属化层的部分延伸穿过通孔与芯片接触焊盘电接触。金属结构电气和热耦合到图案化金属化的选定区域，例如通过焊接或通过共晶粘合工艺。在不同的实施例中，金属结构可以包括结合到另一功率半导体器件结构的相对主表面的金属导体，散热器件安装结构或简单的低阻抗引线。

6. 发明申请

US20130316749A1 WIRELESS DATA PIPELINE 审中-公开
标题翻译：无线数据管道
公开(公告)号：US20130316749A1
公开(公告)日：2013-11-28
申请号：US13479179
申请日：2012-05-23
申请人： Sayed-Amr El-Hamamsy , Rashed Haydar
发明人： Sayed-Amr El-Hamamsy , Rashed Haydar
IPC分类号： H04B7/00
CPC分类号： G01V1/223
摘要： System and method for retrieving data from distributed nodes using radio. Data is transmitted through a mesh of nodes to aggregators, and may be transmitted through a mesh of aggregators to higher level aggregators. High level aggregators are arranged in pipelines and configured to transmit and receive simultaneously to maximize information relaying capacity.
摘要翻译：使用无线电从分布式节点检索数据的系统和方法。数据通过节点网格传输到聚合器，并且可以通过聚合器的网格传输到更高级别的聚合器。高级聚合器被布置在管道中并且被配置为同时发送和接收以最大化信息中继能力。

7. 发明申请

US20090265140A1 WIRELESS DATA ACQUISITION NETWORK AND OPERATING METHODS 有权
标题翻译：无线数据采集网络和操作方法
公开(公告)号：US20090265140A1
公开(公告)日：2009-10-22
申请号：US12107719
申请日：2008-04-22
申请人： Ronald Gerald Murias , Sayed-Amr El-Hamamsy
发明人： Ronald Gerald Murias , Sayed-Amr El-Hamamsy
IPC分类号： G01V1/22
CPC分类号： G01V1/223
摘要： A method of collecting data from wireless sensor units arranged in a network. The method may comprise the steps of initiating distribution of control signals to the wireless sensor units, acquiring data with the wireless sensor units by sensing one or more physical parameters, each of the wireless sensor units transmitting the acquired data in response to the control signals; and each of the wireless sensor units transmitting of at least a portion of the acquired data according to a prioritizing algorithm associated with each respective wireless sensor unit.
摘要翻译：从布置在网络中的无线传感器单元收集数据的方法。该方法可以包括以下步骤：启动向无线传感器单元分配控制信号，通过感测一个或多个物理参数与无线传感器单元获取数据，每个无线传感器单元响应于控制信号发送所获取的数据; 并且所述无线传感器单元中的每一个根据与每个相应无线传感器单元相关联的优先级算法来发送所获取的数据的至少一部分。

8. 发明授权

US06437567B1 Radio frequency coil for open magnetic resonance imaging system 失效
标题翻译：射频线圈用于开放磁共振成像系统
公开(公告)号：US06437567B1
公开(公告)日：2002-08-20
申请号：US09455430
申请日：1999-12-06
申请人： John Frederick Schenck , Ronald Dean Watkins , William Alan Edelstein , Sayed-Amr El-Hamamsy , Eddy B. Boskamp , Randy Otto John Giaquinto , John Andrew Mallick
发明人： John Frederick Schenck , Ronald Dean Watkins , William Alan Edelstein , Sayed-Amr El-Hamamsy , Eddy B. Boskamp , Randy Otto John Giaquinto , John Andrew Mallick
IPC分类号： G01V300
CPC分类号： G01R33/3415 , G01R33/34061 , G01R33/3806
摘要： A quadrature coil suitable for use with an open frame MRI system provides crossing pairs of arrays of parallel conductor elements, respectively. Compact configuration is provided through use of an isolating circuit for incorporating parasitic capacitances at the resonance frequency of the coil into a blocking parallel resonance. Termination of the parallel conductor elements may be accomplished by equal impedance node connectors formed from branching pairs of conductors or a triangular least resistance connection form. RF shields are provided by pairs of conductive sheets containing eddy current reducing slots aligned with the parallel conductors elements of the coil.
摘要翻译：适用于开放式框架MRI系统的正交线圈分别提供平行导体元件的交叉对阵列。通过使用用于将线圈的谐振频率处的寄生电容并入阻塞并联谐振的隔离电路来提供紧凑配置。平行导体元件的端接可以通过由分支对导体或三角形最小电阻连接形式形成的等阻抗节点连接器来实现。 RF屏蔽件由包含与线圈的平行导体元件对准的涡流减小槽的导电片构成。

9. 发明授权

US6157276A MRI magnet assembly with non-conductive inner wall 有权
标题翻译： MRI磁体组件与非导电内壁
公开(公告)号：US6157276A
公开(公告)日：2000-12-05
申请号：US134764
申请日：1998-08-14
申请人： Robert Arvin Hedeen , William Alan Edelstein , Sayed-Amr El-Hamamsy , Kenneth Gordon Herd , Robert Adolph Ackermann
发明人： Robert Arvin Hedeen , William Alan Edelstein , Sayed-Amr El-Hamamsy , Kenneth Gordon Herd , Robert Adolph Ackermann
IPC分类号： A61B5/055 , G01R33/3815 , G01R33/385 , H01F6/00
CPC分类号： G01R33/3854 , G01R33/3815 , Y10S505/879 , Y10S505/893 , Y10S505/898
摘要： An MR magnet assembly includes a cylindrical vessel for housing a superconducting magnet and having a vacuum between its inner and outer walls. The vessel defines a magnet bore for receiving a patient to be imaged. A gradient coil assembly is mounted in the bore adjacent the inner wall of the magnet assembly. To reduce gradient coil noise, the inner wall is constructed of a non-conductive material which does not support eddy currents.
摘要翻译： MR磁体组件包括用于容纳超导磁体并且在其内壁和外壁之间具有真空的圆柱形容器。容器限定用于接收待成像的患者的磁体孔。梯度线圈组件安装在与磁体组件的内壁相邻的孔中。为了减少梯度线圈噪声，内壁由不支持涡流的非导电材料构成。

10. 发明授权

US5517086A Modified valley fill high power factor correction ballast 失效
标题翻译：修改谷补补高功率因数校正镇流器
公开(公告)号：US5517086A
公开(公告)日：1996-05-14
申请号：US403087
申请日：1995-03-13
申请人： Sayed-Amr El-Hamamsy , Mustansir H. Kheraluwala
发明人： Sayed-Amr El-Hamamsy , Mustansir H. Kheraluwala
IPC分类号： H05B41/28 , H05B41/16
CPC分类号： H05B41/28
摘要： A modified valley fill circuit, including a main ballasting inductor for supplying an electrolytic capacitor, has an additional charging winding on the main ballasting inductor for charging the electrolytic capacitor to a predetermined voltage which maximizes the power factor of the input current by optimizing the conduction angle of the input current. In a discharge lamp ballast, the modified valley fill circuit reduces the lamp current crest factor by controlling the frequency with a lamp current control loop.
摘要翻译：包括用于提供电解电容器的主要镇流电感器的改进的谷底填充电路在主镇流感应器上具有额外的充电绕组，用于将电解电容器充电到预定电压，其通过优化导通角来最大化输入电流的功率因数的输入电流。在放电灯镇流器中，通过用灯电流控制回路控制频率，改进的谷底填充电路降低灯电流波峰因数。

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