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公开(公告)号：IL134006A
公开(公告)日：2004-07-25
申请号：IL13400698
申请日：1998-07-15
Applicant: STEVENS INST TECHNOLOGY
IPC: F41H11/12 , G01N29/00 , G01N29/11 , G01N29/28 , G01N29/40 , G01N29/46 , G01N29/48 , G01S13/88 , G01S15/02 , G01S15/04 , G01S15/88 , G01V1/00 , G01V3/12 , G01N29/20 , G01V1/28
Abstract: A device (10) which employs an acoustic signal having one or more frequencies for penetrating into ground, water, or sediments and vibrating a compliant buried object (8) is provided. When these acoustic signals encounter an acoustically compliant object (8) such as a mine, the acoustic signals vibrate the compliant object (8), leading to a vibration of the compliant object (8) against the boundaries of the surrounding medium such as ground sediment, creating a nonlinear distortion of the probing signal including the generation of harmonics and acoustic waves with combination frequencies (nonlinear signals). These nonlinear vibrating signals are received from the surface by a sensor (20). The amplitude of the measured nonlinear signals indicates the presence of an acoustically compliant object (8) such as a mine. The present invention also relates to a method and apparatus which emits an electromagnetic RF probing signal and acoustic or vibration signal (modulating signal), detects the reflected electromagnetic signal from the buried object (8), and processes the received signal, identifying the modulation caused by vibration.
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公开(公告)号：CA2505267A1
公开(公告)日：2004-05-27
申请号：CA2505267
申请日：2003-11-05
Applicant: STEVENS INST TECHNOLOGY
Inventor： BECKER KURT , KUNHARDT ERICH
IPC: H01J20060101 , H01J7/24 , H01J17/00 , H01J17/04 , H01J37/32 , H01J61/28 , H05H1/24 , H05H1/46 , H01J17/49
Abstract: A method and apparatus for stabilizing glow plasma discharges by suppressing the transition from glow-to-arc includes a perforated dielectric plate havin g an upper surface and a lower surface and a plurality of holes extending therethrough. The perforated dielectric plate is positioned over the cathode . Each of the holes acts as a separate active current limiting micro-channel that prevents the overall current density from increasing above the threshol d for the glow-to-arc transition. This allows for a stable glow discharge to b e maintained for a wide range of operating pressures (up to atmospheric pressures) and in a wide range of electric fields include DC and RF fields o f varying strength.
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公开(公告)号：AT229227T
公开(公告)日：2002-12-15
申请号：AT98910447
申请日：1998-03-17
Applicant: STEVENS INST TECHNOLOGY
Inventor： KUNHARDT ERICH E , BECKER KURT H
Abstract: A method and apparatus for stabilizing glow plasma discharges by suppressing the transition from glow-to-arc includes a perforated dielectric plate having an upper surface and a lower surface and a plurality of holes extending therethrough. The perforated dielectric plate is positioned over the cathode. Each of the holes acts as a separate active current limiting micro-channel that prevents the overall current density from increasing above the threshold for the glow-to-arc transition. This allows for a stable glow discharge to be maintained for a wide range of operating pressures (up to atmospheric pressures) and in a wide range of electric fields include DC and RF fields of varying strength.
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公开(公告)号：IL150105D0
公开(公告)日：2002-12-01
申请号：IL15010500
申请日：2000-12-15
Applicant: STEVENS INST TECHNOLOGY , PLASMASOL LLC
Abstract: A plasma reactor including a first dielectric having at least one capillary defined therethrough, and a segmented electrode including a plurality of electrode segments, each electrode segment is disposed proximate an associated capillary. Each electrode segment may be formed in different shapes, for example, a pin, stud, washer, ring, or disk. The electrode segment may be hollow, solid, or made from a porous material. The reactor may include a second electrode and dielectric with the first and second dielectrics separated by a predetermined distance to form a channel therebetween into which the plasma exiting from the capillaries in the first dielectric is discharged. The fluid to be treated is passed through the channel and exposed to the plasma discharge. If the electrode segment is hollow or made of a porous material, then the fluid to be treated may be fed into the capillaries in the first dielectric and exposed therein to the maximum plasma density. The fluid to be treated may be exposed to the plasma discharge both in the capillaries as well as in the channel between the two dielectrics. The plasma reactor is more energy efficient than conventional devices and does not require a carrier gas to remain stable at atmospheric pressure. The plasma reactor has a wide range of application, such as the destruction of pollutants in a fluid, the generation of ozone, the pretreatment of air for modifying or improving combustion, and the destruction of various organic compounds, and surface cleaning of objects.
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公开(公告)号：BR0016773A
公开(公告)日：2002-09-03
申请号：BR0016773
申请日：2000-12-15
Applicant: STEVENS INST TECHNOLOGY , PLASMASOL LLC
Inventor： KORFIATS GEORGE P , KUNHARDT ERICH , CHRISTODOULATOS CHRISTOS , CROWE RICHARD
Abstract: A plasma reactor including a first dielectric having at least one capillary defined therethrough, and a segmented electrode including a plurality of electrode segments, each electrode segment is disposed proximate an associated capillary. Each electrode segment may be formed in different shapes, for example, a pin, stud, washer, ring, or disk. The electrode segment may be hollow, solid, or made from a porous material. The reactor may include a second electrode and dielectric with the first and second dielectrics separated by a predetermined distance to form a channel therebetween into which the plasma exiting from the capillaries in the first dielectric is discharged. The fluid to be treated is passed through the channel and exposed to the plasma discharge. If the electrode segment is hollow or made of a porous material, then the fluid to be treated may be fed into the capillaries in the first dielectric and exposed therein to the maximum plasma density. The fluid to be treated may be exposed to the plasma discharge both in the capillaries as well as in the channel between the two dielectrics. The plasma reactor is more energy efficient than conventional devices and does not require a carrier gas to remain stable at atmospheric pressure. The plasma reactor has a wide range of application, such as the destruction of pollutants in a fluid, the generation of ozone, the pretreatment of air for modifying or improving combustion, and the destruction of various organic compounds, and surface cleaning of objects.
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Patent Agency Ranking
公开(公告)号：CA2364797A1
公开(公告)日：2002-07-22
申请号：CA2364797
申请日：2001-12-11
Applicant: STEVENS INST TECHNOLOGY , LUCENT TECHNOLOGIES INC
Inventor： CAPASSO FEDERICO , CHO ALFRED YI , MARTINI RAINER , GMACHL CLAIRE F , WHITTAKER EDWARD ANTHONY , HUTCHINSON ALBERT LEE , BETHEA CLYDE GEORGE , TREDICUCCI ALESSANDRO , PAIELLA ROBERTO , SIVCO DEBORAH LEE
Abstract: A process for optically transmitting data to a remote receiver includes receiving a stream of input data signals and modulating a mid-IR laser by direct modulation with a waveform whose sequential values are responsive of the dat a signals of the stream. The direct modulation includes pumping the mid-IR las er to produce high and low optical power levels in response to different ones of t he values. The process also includes transmitting output light from the modulated mid-I R laser to the remote receiver via a free space communications channel.
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公开(公告)号：AU720025B2
公开(公告)日：2000-05-18
申请号：AU6468898
申请日：1998-03-17
Applicant: STEVENS INST TECHNOLOGY
Inventor： KUNHARDT ERICH E , BECKER KURT H
Abstract: A method and apparatus for stabilizing glow plasma discharges by suppressing the transition from glow-to-arc includes a perforated dielectric plate having an upper surface and a lower surface and a plurality of holes extending therethrough. The perforated dielectric plate is positioned over the cathode. Each of the holes acts as a separate active current limiting micro-channel that prevents the overall current density from increasing above the threshold for the glow-to-arc transition. This allows for a stable glow discharge to be maintained for a wide range of operating pressures (up to atmospheric pressures) and in a wide range of electric fields include DC and RF fields of varying strength.
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公开(公告)号：AU8569598A
公开(公告)日：1999-02-10
申请号：AU8569598
申请日：1998-07-15
Applicant: STEVENS INST TECHNOLOGY
Inventor： DONSKOY DIMITRI M , SUTIN ALEXANDER M
IPC: F41H11/12 , G01N29/00 , G01N29/11 , G01N29/28 , G01N29/40 , G01N29/46 , G01N29/48 , G01S13/88 , G01S15/02 , G01S15/04 , G01S15/88 , G01V1/00 , G01V3/12
Abstract: A device (10) which employs an acoustic signal having one or more frequencies for penetrating into ground, water, or sediments and vibrating a compliant buried object (8) is provided. When these acoustic signals encounter an acoustically compliant object (8) such as a mine, the acoustic signals vibrate the compliant object (8), leading to a vibration of the compliant object (8) against the boundaries of the surrounding medium such as ground sediment, creating a nonlinear distortion of the probing signal including the generation of harmonics and acoustic waves with combination frequencies (nonlinear signals). These nonlinear vibrating signals are received from the surface by a sensor (20). The amplitude of the measured nonlinear signals indicates the presence of an acoustically compliant object (8) such as a mine. The present invention also relates to a method and apparatus which emits an electromagnetic RF probing signal and acoustic or vibration signal (modulating signal), detects the reflected electromagnetic signal from the buried object (8), and processes the received signal, identifying the modulation caused by vibration.
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公开(公告)号：CA2284242A1
公开(公告)日：1998-09-24
申请号：CA2284242
申请日：1998-03-17
Applicant: STEVENS INST TECHNOLOGY
Inventor： BECKER KURT H , KUNHARDT ERICH E
Abstract: A glow plasma discharge device having an electrode (20, 40) covered with perforated dielectric (30) is disclosed.
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公开(公告)号：CA2219379A1
公开(公告)日：1996-10-31
申请号：CA2219379
申请日：1996-04-29
Applicant: STEVENS INST TECHNOLOGY
Inventor： HONG KICHEON , VAMAN DHADESUGOOR R , CHAKRAVARTHY CADATHUR V
Abstract: A method is provided for recovery of lost cells in a telecommunications infrastructure such as an ATM network wherein an error recovery scheme is incorporated into the network infrastructure to allow recovery of cells along the network.
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