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| Number | Title | Issue Date |
| 8172088 | Air separator Apparatus and method for separating lightweight waste from product with cyclic pulses of air. An air separator includes a blower duct directing air upward through product conveyed on a foraminous conveyor. A pair of counter-rotating vanes in the blower duct cyclical... | 05/08/2012 |
| 8016117 | System and method for eliminating emissions from an air classification device An air classification device for separation of solids comprising an input system, a first solid separator system, an output system, and an emission containing system. The emission containing system employs supplemental air lines, a supplemental air source, and high-... | 09/13/2011 |
| 7997414 | Method for separating particles in hydrous slurry and a hindered-bed separator A method for separating particles in hydrous slurry comprises connecting at least one teeter water pipe of a teeter water distributor of a hindered-bed separator in fluid connection with a teeter water discharging mechanism, and discharging teeter water from the at ... | 08/16/2011 |
| 7267233 | In-line classifier for powdered products A classifier for classifying particulates entrained in a flowing stream of gas is configured such that a change of direction of gas flow causes particles to impinge upon a target, heavier particles being trapped in a downwardly extending fluidized trap. The classifi... | 09/11/2007 |
| 7240868 | Dynamic ring classifier for a coal pulverizer The present invention is directed to, among other things, a classifier assembly for mounting on the center shaft of a rotary coal pulverizer which includes a labyrinthian sealing arrangement operatively associated with the shaft for limiting the egress of unacceptab... | 07/10/2007 |
| 7223896 | Fines co-feed for maintaining efficient reactor hydrodynamics This invention provides processes for maintaining a desired particle size distribution in an oxygenate to olefin reaction system. In one embodiment, the invention comprises replacing lost catalyst fines with less active co-catalyst particles. By adding less active c... | 05/29/2007 |
| 7108138 | Material classifier A material classifier includes a cyclone including a cyclone inlet, a cyclone outlet, a blower and a blower discharge; an air diffuser connected at a diffuser inlet to the cyclone outlet and at a diffuser outlet to an air lock such that the cyclone and air diffuser ... | 09/19/2006 |
| 7090081 | Selectively removing undesirably sized catalyst particles from a reaction system The present invention provides various processes for selectively removing undesirably sized catalyst particles from a reaction system. In one embodiment, a plurality of catalyst particles, having a first median particle diameter, is withdrawn from the reaction syste... | 08/15/2006 |
| 7028931 | Dynamic ring classifier for a coal pulverizer The present invention is directed to, among other things, a classifier assembly for mounting on the center shaft of a rotary coal pulverizer which includes a labyrinthian sealing arrangement operatively associated with the shaft for limiting the egress of unacceptab... | 04/18/2006 |
| 7028847 | High efficiency two-stage dynamic classifier A two-stage dynamic classifier (30, 30′) for classifying a pulverized feed material (34, 34′, 38) entrained in an air flow (31) includes a vertically extending housing having a lower feed material inlet (18), an upper feed material outlet ( | 04/18/2006 |
| 6951285 | Air suspension grain cleaner system An air suspension grain cleaner system for efficiently cleaning grain in small applications. The air suspension grain cleaner system includes a frame, a cleaning chamber, a blower unit fluidly connected to a lower portion of the cleaning chamber, a grain inlet fluid... | 10/04/2005 |
| 6935510 | Air separator The invention relates to an air separator for sifting material suspended in a flow of gas having course material and fine material by using a sifting wheel which rotates in a sifting chamber and which has blades fixed on the external periphery thereof. The blade cha... | 08/30/2005 |
| 6889843 | Apparatus and methods for controlling the separation of particulate material Apparatus and methods for separating particulate material into relatively fine and relatively coarse particles wherein such particulate material is introduced to a separating zone through which a gas stream flows at such volume and velocity as to entrain fine partic... | 05/10/2005 |
| 6883667 | Automatic debris separation system The invention is an automatic debris separation system for effecting air separation of fragmented materials, such as size-reduced fiber feedstocks derived from textile wastes. The system uses high-velocity air within an elutriation assembly to efficiently remove fer... | 04/26/2005 |
| 6883668 | Method of automatic debris separation The invention is an automatic debris separation process for effecting air separation of fragmented materials, such as size-reduced fiber feedstocks derived from textile wastes. The process uses high-velocity air within an elutriation assembly to efficiently remove f... | 04/26/2005 |
| 6776291 | Article and apparatus for particulate size separation An article including: disk or vortex ring with a circular opening in the center of the disk; and a fastener adapted to concentrically attach the disk to the particle outlet opening of a classifier wheel. ... | 08/17/2004 |
| 6726021 | Stopper debris separator A stopper debris separator useful for removing unwanted debris from stoppers utilized to seal bottles of IV pharmaceutical compositions at the manufacturing process. Debris-containing stopper in the stopper injection hopper are drawn through the stopper duct into th... | 04/27/2004 |
| 6644479 | Method and air separator for classifying charging material reduced in size A method of grading comminuted charging material in a wind sifter having a sifting rotor. The sifting air and the charging material are introduced into a sifting chamber and blocking air is blown into a ring seal region in the transition region between th... | 11/11/2003 |
| 6318559 | Air classifier with rotor comprising two independently controllable parallel flow paths A centrifugal type pneumatic separator having a rotor and a housing. The rotor has a plurality of vanes distributed around a periphery thereof. The housing contains the rotor. The housing has an air input conduit, a material input conduit and an evacuatio... | 11/20/2001 |
| 6298579 | Fluidized-bed drying and classifying apparatus A fluidized-bed drying and classifying apparatus is provided with a main body (10) in which a fluidized bed is formed to dry a granular material and to classify the same into fine particles and coarse particles. A perforated gas-distributing plate (12) is... | 10/09/2001 |
| 6186334 | Method of and apparatus for screening bulk material In a method of screening bulk material, a gas is conducted in counterflow to a direction of movement of bulk material for separating the bulk material into a fraction of coarse particles and a fraction of fine particles. In order to limit the amount of co... | 02/13/2001 |
| 5934478 | Gas stream classifier and process for producing toner A gas stream classifier has a gas stream classifier for classifying a feed powder supplied from a feed supply nozzle, into at least a coarse powder fraction, a median powder fraction and a fine powder fraction by an inertia force acting on particles and a... | 08/10/1999 |
| 5931306 | Gas current classifier and process for producing toner A gas current classifier has a material feed nozzle, a Coanda block, a classifying wedge and a classifying wedge block having the classifying wedge. The Coanda block and the classifying wedge define a classification zone, and the classifying wedge block i... | 08/03/1999 |
| 5794786 | Method and apparatus for sorting solids by airstream An airstream solid sorting technology easily and efficiently sorts electric wire and other slender objects from other unslender objects in crushed bulk wastes. A mixture of slender and unslender objects is supplied into an airstream sorting vessel, in whi... | 08/18/1998 |
| 5788083 | Elbow/countercurrent classifier The invention proposes an elbow/countercurrent classifier by means of which a pneumatically introduced bulk-material stream can be separated into coarse fractions and fine materials. In order to increase the efficiency of the classifier as regards the sep... | 08/04/1998 |
| 5725102 | Method and device for separating heavy particles from a particulate material In a method for separating heavy particles from a particulate material containing such heavy particles, use is made of a device having a Coanda sifter, which is adapted to receive a flow of the particulate material and which has a downwardly-facing, conve... | 03/10/1998 |
| 5685434 | Vertical drop product cleaner The present invention provides a vertical drop, multi-pass cleaner comprising a housing and first and second panels defining a separation plenum therebetween through which the product drops substantially vertically through an upwardly directed air flow an... | 11/11/1997 |
| 5645171 | Material separator system utilizing vacuum induced airflow Apparatus for sorting a plurality of seeds or other objects includes a plurality of separate vertically oriented collection chambers arranged side-by-side. A vacuum source induces an airflow through a vertical column disposed at one side of the plurality ... | 07/08/1997 |
| 5542544 | Apparatus and method for separating low density solids from an airflow Apparatus and method for separating low density solids from an airflow where a first airflow containing low density solids moves through a first conduit at a predetermined velocity and pressure and flows into a separating chamber wherein it is changed int... | 08/06/1996 |
| 5427248 | Apparatus for the separation of tobacco lamina from tobacco stem A modular pneumatic type tobacco separator apparatus employs a separation chamber which receives a threshed tobacco mixture at a feed trough at an upper elevation, and receives an upwardly directed air stream at a lower elevation. The air stream separates... | 06/27/1995 |
| 5417330 | Apparatus for separating tramp material from a pneumatic conveying systgem An apparatus for separating tramp particles from comparatively lighter particles of product being conveyed, both entrained in a fluid stream within a pipeline of a pneumatic conveying system, generally comprising a passageway through which the fluid strea... | 05/23/1995 |
| 5358121 | Method and apparatus for heavy material separation A method and apparatus for separating aluminum-based materials from non-aluminum materials is provided. The apparatus includes a conveyor which leads into a chute. Mixed materials which may be pre-shredded travel along the conveyor and into the chute. An ... | 10/25/1994 |
| 5351832 | Control system for cleaning systems A system for cleaning or separating particles that uses a controller or computer to precisely control the cleaning or separating process. By carefully monitoring and controlling the separating process, an improved degree of separation is achieved. In the ... | 10/04/1994 |
| 5273163 | Centrifugal particle classifier having uniform influx distributor A classifier rotor mounted for rotation about a rotor axis inside a classification chamber for separating a fines fraction includes a plurality of disks mounted in parallel, spaced-apart relation along the rotor axis and a plurality of classifier blades a... | 12/28/1993 |
| 5184730 | Method and apparatus using feed conveying fluid blending the feed and/or separating debris from the feed A method and apparatus for blending a material feed and/or separating debris from a material feed is disclosed in which a feed separator is used with a blender and/or debris separator. The feed separator separates a feed from the conveying air flow which ... | 02/09/1993 |
| 5181616 | Grain processor A grain processor for separating and measuring components of a sample of grain as it passes through a rotary sieve having two or more sieving sections having different perforations. The separated particles in each of the sieving sections are passed throug... | 01/26/1993 |
| 5181457 | Seed peeling apparatus By rotating a seed agitater means such as a rotary cutter within a seed container in which seeds such as of spinach and lawn grass are admitted, the seeds are peeled to separate seed cores from seed coats while being stirred. The seed cores free from the ... | 01/26/1993 |
| 5180257 | Straightening instrument and cyclone A cyclone comprising a swirl cylinder, an inner tube disposed in the upper section of the swirl cylinder, an inlet duct arranged tangentially to the outer periphery of the swirl cylinder, a drop opening formed in the lower section of the swirl cylinder, a... | 01/19/1993 |
| 5165549 | Gas current classifying separator A separator for classifying powder with air current comprises at least a classifying chamber and an introducing section for introducing powder into the classifying chamber, a powder feeding inlet for feeding powder formed at the upper portion of the class... | 11/24/1992 |
| 5152604 | Recirculating debris separating method and apparatus A method and apparatus are disclosed for separating debris from a material product by recirculating the product in a product chamber with a fluid flow and using the fluid flow to entrain and remove debris.... | 10/06/1992 |
