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Class 209/128 - Attracting and repelling


Subclass of Class 209 - Classifying, separating, and assorting solids
Definition: Methods and means which involve the attraction of material
No. of patents: 65
Last issue date: 12/06/2011


1    
NumberTitleIssue Date
8071904Electrostatic separation method and electrostatic separation device
The present invention provides an electrostatic separation method and an electrostatic separation device each of which, even in a case where the concentration of unburned components of coal ash produced by a boiler of a coal-fired power plant is as high as 15% to 30...
12/06/2011
7880108Deflection plate
The present invention provides deflection plates for use in a flow-type particle sorter that are resistant to wetting. The deflection plates include a gas-porous, conductive plate. A gas, such as air, is passed through the plate from the outer face (away from the pa...
02/01/2011
7741574Particle separation/purification system, diffuser and related methods
A separator and related separation methods are for intended use in separating particles having a selected charge from a particle mixture entrained in or carried by a fluid flow. The separator comprises a tubular, elongated body for receiving the fluid flow. At least...
06/22/2010
7259344Application of static light to a fluid of CNTs for purposes of sorting the CNTs
A method is described that comprises sorting carbon nanotubes (CNTs) within a fluidic flow for a targeted subset of the CNTs. The sorting comprises attracting at least a portion of the CNTs within the fluidic flow in a direction of increasing intensity of an electri...
08/21/2007
7119298Method for electrostatically separating particles, apparatus for electrostatically separating particles, and processing system
An electrostatic separation apparatus for conductive particles and insulating particles with reduced separation time and improved separating capability, comprises a substantially flat-plate shaped bottom electrode (26) provided on lower side, a substantially ...
10/10/2006
7086535Particle separation/purification system, diffuser and related methods
A separator for intended use in separating particles having a selected charge from a particle mixture entrained in or carried by a fluid flow is disclosed. The separator comprises a tubular, elongated body for receiving the fluid flow. At least one and preferably a ...
08/08/2006
7073736Shredder dust electrostatic separation apparatus and method
A shredder dust electrostatic separation apparatus separates and recovers various kinds of crushed pieces included in shredder dust by the use of electrostatic force. The apparatus includes a rotating drum made of a conductive material, which receives supplied shred...
07/11/2006
7063213Mediating electrostatic separation
Methods, systems and media for separating polymer mixtures. A mixture including polymeric components is provided. A particulate media is added to the mixture, where the particulate media can selectively mediate a triboelectric charging of the polymer mixture. The me...
06/20/2006
7045734Spark induction power conditioner for high tension physical separators
A D.C. voltage altering device includes at least one spark induction power conditioner including a first electrode connectable to a high voltage D.C. power source and a second electrode spaced from the first electrode and forming a discharging gap therebetween. The ...
05/16/2006
7041925Apparatus for the electrostatic separation of particulate mixtures
Apparatus for the electrostatic separation of a mixture of particles that exhibit difference in electrical conductivity, comprising: a conductive surface to which conducting particles lose their charge; feeding means for feeding the mixture of particles onto the con...
05/09/2006
7012209Method of gold separation and gold separation device
A method of collecting gold by flowing water over a gold collecting medium located in a sluice to induce a positive surface charge on the gold collecting medium. Feeding gold laden material into the sluice with the flowing water to induce a negative surface charge o...
03/14/2006
6978537Method of transferring electric charge using a micrometer-scaled device
A charged species source and a charged species drain are provided. A moveable component is positioned proximate to the charged species source and the charged species drain. A first protrusion and a second protrusion are provided in contact with the moveable componen...
12/27/2005
6974926Sorting of single-walled carbon nanotubes using optical dipole traps
In embodiments of the present invention, the electric field of a focused laser beam induces a dipole in a single-walled carbon nanotube. The single-walled carbon nanotube has one or more resonant frequencies. When the frequency of the laser beam is less than a reson...
12/13/2005
6951992Corona and static electrode assembly
A corona and static electrode assembly is attachable to a frame of an existing electrostatic separator and includes a pair of oppositely spaced end panels and an elongate corona support member disposed inwardly of and supported by the respective end panels. The coro...
10/04/2005
6822180Particle separation mechanism
A microchip comprises a flow pass in which a solution containing particles can flow, and a deflection mechanism for deflecting a portion of the particles as the particles flow through the flow pass. ...
11/23/2004
6797908High-tension electrostatic classifier and separator, and associated method
The electrostatic classifier and separator is supported by a housing and includes a corona classifier section for classifying particulate materials according to size. Corona element supplies mobile ions for bombarding particulate materials dropping down a passageway...
09/28/2004
6789679Method and apparatus for separating particles
The invention concerns a method and apparatus for separating mineral particles according to their dielectric and/or electrophysical properties. In one practical example, rutile particles can be separated from zircon particles. In the method, the mineral particles wh...
09/14/2004
6774332Composite separator
A composite sorting apparatus for separating conductive materials from non-conductive materials comprising a drum electrode, needle-shaped electrodes, and a plate-shaped electrode, wherein the plurality of needle-shaped electrodes are arranged so that the interval X...
08/10/2004
6723938Electrostatic conductive induction separator
A particle separator for the separation of particulate mixture having species that exhibit difference in electrical conductivity. The separator has a conductive surface including a separation zone, has feeder means for feeding the species to the separation zone, and...
04/20/2004
6720514Plastic sorter
A feed tray (22) for guiding tribo electrified plastic pieces (2) to a drum electrode (6) is provided with a vibrator (23), thereby making it possible to vibrate the plastic pieces (2) to form a thin uniform layer, and to reliably ...
04/13/2004
6664492Method of eliminating electrically-conductive particles from an airstream
Disclosed are systems and methods for removing electrically-conductive contaminants entrained in airstream. The airstream is preferably redirected to separate the electrically-conductive contaminants from the airstream. The separated electrically-conducti...
12/16/2003
6648975Method and apparatus for fabricating quantum dot functional structure, quantum dot functional structure, and optically functioning device
The present invention is to fabricate a quantum dot functional structure having ultra-fine particles homogeneously distributed in a transparent medium by efficiently fabricating high-purity ultra-fine particles having a single particle diameter and unifor...
11/18/2003
6596144Separation columns and methods for manufacturing the improved separation columns
A separation column for use in a separation process such as chromatography, electrochromatography and electrophoresis is described. The separation column includes multiple collocated monolith support structures and interconnected channels defined by the s...
07/22/2003
6540088Method and apparatus for sorting particles with electric and magnetic forces
An apparatus for sorting particles. The apparatus includes a magnet mechanism for separating the particles with a magnetic force. The apparatus includes an electric mechanism for separating particles with an electrical force disposed adjacent to the magne...
04/01/2003
6496997Hard disk driver with an integrated structure for electrostatically removing dielectric particles generated during the operation, and electrostatic cleaning method for a hard disk driver
An electrostatic cleaning structure of a hard disk driver is formed by a plurality of concentric conductive regions to which biasing pulse trains are supplied. Each biased conductive region generates an electric field attracting any dielectric particle. T...
12/24/2002
6454862Fine-particle classification apparatus and functional material production apparatus
In the fine-particle classification apparatus of the present invention, a carrier gas velocity in a take-in section to introduce the aerosol to the fine-particle classification apparatus from the aerosol generation apparatus is increased so as to decrease...
09/24/2002
6452126Electrostatic separation enhanced by media addition
This invention relates to improving the separation efficiency in a triboelectric separator by adding media against which the components of the mixture will charge. As a result, random charging between the components of the mixture is reduced and controlle...
09/17/2002
6390302Method and apparatus for separating particles
The invention concerns a method and apparatus for separating mineral particles according to their dielectric and/or electrophysical properties. In one practical example, rutile particles can be separated from zircon particles. In the method, the mineral p...
05/21/2002
6365856Particle separator and method of separating particles
The invention relates to a particle separator and methods for separating the particles of a mixture. The apparatus of the invention employs two field elements to create a field in the space between the field elements. The surface contact of the particles ...
04/02/2002
6359246Process and device for separating broken beans and shells
The invention concerns a process as well as an apparatus for separating broken goods, consisting of broken nibs or beans and their shells and especially the separation of broken cacao beans (nibs) from the cacao shells in an electrostatic manner. In this ...
03/19/2002
6320148Electrostatic method of separating particulate materials
A method of separating particulate materials of different properties has been developed. It consists of feeding a mixture of dry, powdered materials to one end of the surface of a planar electrode, which is vibrating to move the particles forward. At leas...
11/20/2001
6310309Methods of analysis/separation
Particles are separated according to their dielectrophoretic characteristics and electrorotation characteristics by the use of a travelling wave separation in which they flow from a departure point at an inlet (18) towards at least two destinations at out...
10/30/2001
6307170Separation of particles dispersed in liquid
A device for capturing negatively or positively charged fine particles dispersed in a liquid includes a rotor having an outer surface charged in a polarity opposite to the particles and arranged to be rotated. By rotating the rotor while being maintained ...
10/23/2001
6271492Frictional charging device
A frictional charging device (30) for charging crushed chips (1) of a plurality of kinds of plastics by stirring them. A stirring vessel (31) has a friction assisting material (52) put therein, the particles of the friction assisting material (52) being s...
08/07/2001
6211477Electrostatic deceleration system for flow cytometer
An electrostatic deceleration system is provided for use with a flow cytometer to decelerate the movement of electrically charged droplets formed by the flow cytometer in order to minimize damage to the cells contained in the droplets when the droplets ar...
04/03/2001
6168029Method for separating electrically conductive mineral components from electrically non-conductive mineral components of an ore
An improved method for separating electrically conductive components of an ore or mineral sand from electrically non-conductive components of the ore or mineral sand is disclosed which includes processing the ore, adding a polymer, such as an anionic poly...
01/02/2001
6140598Method for separating polymer-salt mixtures
The present invention relates to a method of triboelectric separation of organic polymers and salts, specially organic polymers containing sulfur, such as polyarylene sulfides and a halogenide or a carboxylate of alkaline metals, alkaline earth metals, am...
10/31/2000
6072140Method and apparatus for electrically charging and separating particles
A method and apparatus for separating particles provides comingled particles including a first group of particles having a weight and a triboelectric propensity and a second group of particles each having a weight less than the particles in the first grou...
06/06/2000
6064022Electrostatic separation of particles
An apparatus and a process for subjecting a free falling stream of particles to an electrostatic field, between two rows of oppositely charged electrostatic rotating electrodes to effect a separation between particles of different electrostatic properties...
05/16/2000
6011229Electrostatic separator for classifying triboelectrically charged substance mixtures
An electrostatic separator of the free-fall type for classifying triboelectrically charged substance mixtures. This separator has a separate voltage source connected to each of the electrodes forming a pair of electrodes in such a way that the one voltage...
01/04/2000
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