Class 209/21 - Gaseous suspension and sifting

Subclass of Class 209 - Classifying, separating, and assorting solids
Definition: Methods and apparatus for separating and segregating into
No. of patents: 28
Last issue date: 05/15/2012

Number	Title	Issue Date
8177070	Air sieving method and apparatus An air sieving apparatus capable of sieving particles in a particle size range below 50 μm includes a cylindrical screening case defining an internal space and provided with a screen dividing the internal space into an upper space and a lower space. Powdered materi...	05/15/2012
8061523	Purifier A purifier is provided that is capable of uniformly sucking powder in a width direction of the sieve layers even when the purifier is configured to be provided with an air distribution chamber formed as being tapered upward and to have a horizontal cyclone provided ...	11/22/2011
7506764	Apparatus and method for separating/mixing particles/fluids An apparatus and method for separating a particle stream into particle groups and treating a particle stream, comprising a dilution treatment chamber defining an upstanding passageway to receive a particle stream, such that the particle stream falls toward a first-p...	03/24/2009
7259231	Extraction and fractionation of biopolymers and resins from plant materials A method for the extraction, separation, fractionation and purification of biopolymers from plant materials using supercritical and/or subcritical solvent extractions is disclosed. Specifically, the process can be used for the separation of resins and rubber from gu...	08/21/2007
7252251	Method for preconcentration of organic synthetic materials derived from shredding of end-of-life durable goods Process for pre-concentration of recoverable polymer materials formed from residues from grinding consumer durable goods at the end of their lives such as automobiles, computer equipment and household appliances, consisting of treating the residue by steps in sequen...	08/07/2007
7246364	Optical pickup device Light from a light source is led to a condensing lens by a light leading unit and is condensed onto an optical recording medium by the condensing lens. Light reflected from the optical recording medium is led to a light sensing device through a spot adjustment lens ...	07/17/2007
7104403	Static two stage air classifier A two-stage static air classifier has a feed duct through which particles of a granular mixture fall. A classifying louver plate having fins forming upwardly inclined classifying channels is fitted into a side opening in the feed duct. Particles of a set size are dr...	09/12/2006
7066187	Modular treatment plant having horizontal drum machines A machine for treating bulk material of industrial volume parts, having a treatment drum which is arranged with a horizontal axis and can be driven in both directions of rotation around the axis, the treatment drum comprises a permanently open co-axial inlet apertur...	06/27/2006
6978899	Apparatus for sorting wood chips in separate fractions An apparatus for sorting wood chips includes a feeder for supplying wood chips onto a sloping support surface to slide along the support surface over a slit extending thereacross. The slit is configured to provide an impulse action by means of a continuous gas flow ...	12/27/2005
6942103	Static two stage air classifier A two-stage static air classifier has a feed duct through which particles of a granular mixture fall. A classifying louver plate having fins forming upwardly inclined classifying channels is fitted into a side opening in the feed duct. Particles of a set size are dr...	09/13/2005
6889842	Apparatus and method for dry beneficiation of coal A method of beneficiating coal in a dry process includes separating raw coal from a coal mine into coal fines and larger pieces of coal using pressurized air, separating the larger pieces of coal according to size, removing ash from the larger pieces of coal on an a...	05/10/2005
6672461	Device for separating solids from air An air material separator may be used to separate scrap from a conveying air flow while having a relatively low weight and short height so that the separator may be positioned within today's single-story manufacturing or processing facilities. The air mat...	01/06/2004
6581778	Powder receiving device A powder receiving device has a loading chamber with an integral dust collector. The dust collector preferably includes at least one bag filter which filters air taken from above powder loaded into the loading chamber. The filtered air is then fed either ...	06/24/2003
6325215	Method and apparatus for separating elastomeric particulates and fibers from a pulverized mixture A method and apparatus for separating elastomeric particulates from a pulverized mixture wherein a first separator assembly separates out substantially clean fiber and passes non-fibrous particulates and residual fiber to a second separator assembly that ...	12/04/2001
6216875	Vibrating screener An improved vibrating screener includes a tangential input system for the material to be processed, combined with a channel internal to the machine and for directing air down through the center of the unit to assist the screened material flowing down the ...	04/17/2001
5667546	Fitting for conveying granular material A fitting is provided to permit granular material carried in an air stream to be deposited within a storage vessel without having the air stream entering the storage vessel itself. The fitting has a tubular filter screen within the housing of the fitting ...	09/16/1997
5538017	Tobacco leaf separator A mixture of tobacco leaf lamina and stem is separated in an apparatus having a first separation chamber in which the mixture is projected through an air stream by a first impeller and an intermediate mixture segment is projected back through the air stre...	07/23/1996
5476109	Apparatus for separating threshed leaf tobacco Apparatus for separating lighter particles such as lamina containing little or no stem from tobacco particles contained in threshed leaf tobacco which comprises a plurality of tobacco particle separating units, each including a separation chamber each a f...	12/19/1995
5360141	Device for metering powder, grained or micropearl dyeing materials Device for quickly variable and high precision metering of powder, granulated or micropearl dyeing material including a container 1 for the dyeing material that is put under vacuum by means of a suction tube 7 from the outside, and a mesh-sieve 5 fixed on...	11/01/1994
5318184	Sludge drying system A sludge drying system using exhaust air from a furnace in a direct heat, rotary drum dryer to simultaneously dry and pelletize the sludge. The dried sludge particles exiting the dryer is entrained in the exhaust air. The sludge particles are separated fr...	06/07/1994
5295583	Process for cleaning short mineral fibers In a process for cleaning short mineral fibers in which the fibers contaminated with foreign bodies are separated from the foreign bodies, at least starting with a certain size, whereby mechanical damage to the fibers is avoided. For this purpose, the cru...	03/22/1994
5257831	Rag tearing machines for the textile industry The rag tearing machine embodies an inlet station 1 in which the materials to be processed for a first time 23 and recycled waste 19 are poured, separately, onto the circulating belt 2. Several rag tearing stations (4a, 4b) are each followed by fan groups...	11/02/1993
5205415	Modular classifier Apparatus for classifying tobacco includes a plurality of vertical lift, single-pass, closed loop apparatus projecting a stream of mixed tobacco components across a classifying chamber of each module, and a portion thereof directly into the infeed apparat...	04/27/1993
5115987	Method for separation of beverage bottle components A method for separation of beverage bottle components including high density polyethylene (HDPE) basecup; poly ethylene terephthalate (PET) bottle body; aluminum cap; paper/plastic labels and adhesives, including disjoining, isolating and separating the v...	05/26/1992
4747939	Particle classifier The invention is directed to a method and system for classifying particulate matter wherein unclassified particulate is projected into a spiraling fluid stream passing through an annular classifying zone. The particulate is projected into the fluid stream...	05/31/1988
4507197	Apparatus and method for producing shot-free mineral wool An apparatus and dry method for de-shotting shot-containing mineral wool fibers wherein the fibers are treated in a granulator to compact them into entangled nodules, and the nodules are passed through an air classifier to open up and de-shot them. In a p...	03/26/1985
4502951	Suction device for obtaining dust samples Suction device for obtaining dust samples of nearly homogeneous grain sizes and with a reproducible bulk density for the analysis of ores. The device, which is suitable for use during the mining of ores, includes a cylindrical casing, having an opening at...	03/05/1985
4000061	Particulate dry product loading apparatus An enclosed particular dry product is conveyed through a conduit by a gaseous fluid formed by a vacuum blower. Metered hoppers feed the product into the conduit. A cyclone removes the product from the fluid and conveys the same to a separating screen. The...	12/28/1976

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Class 209/21 - Gaseous suspension and sifting