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公开(公告)号：US20180342659A1
公开(公告)日：2018-11-29
申请号：US16037835
申请日：2018-07-17
Inventor： Patrick J. Taylor , Sudhir Trivedi , Wendy L. Sarney
Abstract: Provided among other things is an electrical device comprising: a first component that is a semiconductor or an electrical conductor; a second component that is an electrical conductor; and a strong, heat stable junction there between including an intermetallic bond formed of: substantially (a) tin (Sn) or a mixture of Sn and indium (In) thereof, and (b) substantially nickel (Ni). The junction can have an electrical contact resistance that is small compared to the resistance of the electrical device.
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公开(公告)号：US10079420B2
公开(公告)日：2018-09-18
申请号：US15428623
申请日：2017-02-09
Inventor： Ali M. Darwish , Hingloi Alfred Hung
Abstract: A power combiner and divider device includes a first port electrically connected to a first impedance line and a second impedance line; a second port electrically connected to the first impedance line and a coupled line; a third port electrically connected to the second impedance line and the coupled line; a third impedance line electrically connected to the coupled line; and a fourth impedance line electrically connected to each of the third impedance line and the coupled line.
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公开(公告)号：US20180229308A1
公开(公告)日：2018-08-16
申请号：US15896804
申请日：2018-02-14
Inventor： Laszlo J. Kecskes , Kristopher A. Darling , Rajiv S. Mishra , Yuri Mishin , Kiran N. Solanki , Mansa Rajagopalan
Abstract: Novel metallic systems and methods for their fabrication provide an extreme creep-resistant nano-crystalline metallic material. The material comprises a matrix formed of a solvent metal with crystalline grains having diameters of no more than about 500 nm, and a plurality of dispersed metallic particles formed on the basis of a solute metal in the solvent metal matrix and having diameters of no more than about 200 nm. The particle density along the grain boundary of the matrix is as high as about 2 nm2 of grain boundary area per particle so as to substantially block grain boundary motion and rotation and limit creep at temperatures above 35% of the melting point of the material.
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14.发明授权公开(公告)号：US10031246B2
公开(公告)日：2018-07-24
申请号：US13920570
申请日：2013-06-18
Inventor： Weimin Zhou , Olukayode Okusaga , James P Cahill
Abstract: A method and system comprising: an optoelectronic oscillator comprising a light generator, a modulator, and at least one optical fiber, the optoelectronic oscillator operating to send a modulated carrier signal through the optical fiber into a target area and receive the return signal; a circuit for removal of the carrier frequency operatively connected to the oscillator comprising at least one phase shifter; at least one mixer operatively connected to the at least one phase shifter; at least control circuit operatively connected the at least one mixer and the at least one phase shifter for controlling the phase shifter and operating to cancel signals other than the sideband signals; a signal processor for processing the sideband signals to detect acoustical and/or vibrational signals from the target area. The method comprises sensing vibrational and/or acoustical signals for detection of acoustical and/or vibrational signals in the target area.
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公开(公告)号：US20180195845A1
公开(公告)日：2018-07-12
申请号：US15720028
申请日：2017-09-29
Inventor： Brett R. Sorenson , Christopher S. Meyer , Richard L. Summers , Jason C. Angel , Timothy G. Farrand , Daniel R. Scheffler
IPC: F42B12/60
Abstract: A cannon projectile having an elongated body with a plurality of elongated and circumferentially spaced segments. At least one tether is attached to at least one end of the segments to hold the segments together. A deployment device, when activated, enables the segments to deploy radially outwardly into a pattern controlled at least in part by the at least one tether using aerodynamic and inertial forces only.
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Patent Agency Ranking
16.发明授权公开(公告)号：US09964658B2
公开(公告)日：2018-05-08
申请号：US14875927
申请日：2015-10-06
Inventor： David M. Hull , Ross N. Adelman
CPC classification number: G01V3/08 , B64C13/10 , B64C13/18 , B64C39/024 , B64C2201/14 , B64D43/00 , B64D45/00 , G01C21/005 , G01C23/00 , G01S1/00 , G05D1/0094 , G08G5/0021 , G08G5/0086
Abstract: Embodiments of the present invention relate to power line detection, and more particularly, to methods and systems for autonomous power line detection, avoidance, navigation, and inspection. They may be implemented using aerial crafts, but do not have to. According to an embodiment, a method for detecting energized power lines in ambient space in the vicinity of an aerial craft is presented. The method includes measuring, with sensors located on the aerial craft, electric and magnetic fields in the space; and with a power line detection controller, detecting an energized power line in the space in the vicinity of the aerial craft using the sensor data; and determining the orientation of the detected energized power line in the space based on the electric and magnetic field measurements. Similar methods and systems are also presented.
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17.发明授权公开(公告)号：US09948182B2
公开(公告)日：2018-04-17
申请号：US14856846
申请日：2015-09-17
Inventor： Nathan S. Lazarus , Sarah S. Bedair
IPC: H02M3/158
Abstract: A DC-DC power converter having a power source, a load, and a transmission line terminated at one end. A first switch is electrically connected between the power source and a second end of the transmission line and movable between an open and a closed position. A second switch is electrically connected between the second end of the transmission line and the load and is movable between an open and a closed position. A switch control circuit switches the first and second switches between their respective open and closed positions. A pulse forming network forms the transmission line to store the charge in the transmission line.
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18.发明授权公开(公告)号：US09927806B2
公开(公告)日：2018-03-27
申请号：US13733181
申请日：2013-01-03
Inventor： Jemin George
CPC classification number: G05B23/0254 , G06N7/08
Abstract: An apparatus and method for estimation of a system having state variables representing the state of the system comprising predicting the estimate of the state variables along with the uncertainties in the state variables; observing a measurement of at least one state variable corrupted with some amount of error; updating the estimates of the state variables using a weighted average, with more weight being given to estimates with higher certainty; and providing an estimator input to update the estimates of the state variables, the estimator input operating to provide asymptotic convergence of the mean estimation error in all of the state variables in the presence of persistent excitation or disturbance that is not asymptotically decaying to zero.
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公开(公告)号：US09880120B2
公开(公告)日：2018-01-30
申请号：US14337671
申请日：2014-07-22
Inventor： Simon J. Ghionea , David M. Hull , Gabriel L. Smith , Jeffrey S. Pulskamp , Sarah S. Bedair
Abstract: According to embodiments, an electric field sensor having a sensor electrode is constructed of an electrically conductive material and having one or more outwardly protruding pillars. A screen electrode overlies the sensor electrode and has one or more openings which register with the one or more pillars on the sensor electrode. At least one piezoelectric actuator is connected to the screen electrode so that, when excited by a voltage signal, the piezoelectric actuator modulates the screen electrode toward and away from the sensor electrode at the frequency of the periodic voltage signal. An output circuit configured to detect a voltage, a current output, or both, between the sensor electrode and the screen electrode which is proportional in magnitude to the strength of the electric field.
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公开(公告)号：US20170370970A1
公开(公告)日：2017-12-28
申请号：US15635664
申请日：2017-06-28
Inventor： George A. Levin , Paul N. Barnes , Charles C. Rong
CPC classification number: G01R15/207 , G01R19/0092 , G01R33/1238 , G01R33/1246
Abstract: A method of measuring superconducting critical current in persistent mode using superconducting closed loops which allow the persistent current to flow without any joints. This persistent critical current is different than traditional resistive critical current that is the upper limit of the superconducting current carrying capacity, and provides the information about the range of critical current in persistent mode that is more close to applications in MRI, SMES, and Maglev operations. The measurement can be used as a quality control method in the manufacturing process and a piece of crucial information to magnet manufacturers for the design and fabrication of magnet. The superconducting materials include the second generation superconducting wires (coated conductors) based on Rare Earth (RE) Barium Copper Oxide superconducting material (REBa2Cu3O6+x, REBCO), or any other type of superconducting wires that can be manufactured in the form of tape.
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