Class 209/19 - Gaseous suspension, sifting, and stratifying

Subclass of Class 209 - Classifying, separating, and assorting solids
Definition: Methods and apparatus employing free suspension in gas,
No. of patents: 21
Last issue date: 03/25/2008

Number	Title	Issue Date
7347333	Ultra clean air separator system A system and process for separating high and low density materials by air flow. Mixed solid material is delivered into an entrance of a cascade separation chamber where it is allowed to free fall and tumble over inclined surfaces. A fan forces air through a “close...	03/25/2008
7341156	Systems and methods for sorting, collecting data pertaining to and certifying recyclables at a material recovery facility Systems and methods for collecting data pertaining to glass, plastic and/or paper composition within an input stream that includes recyclable material. The data collected can pertain, for example, to the weight and/or volume of the glass, plastic and/or paper within...	03/11/2008
7320348	Forest rejuvenation and preservation A method of rejuvenating and preserving a forest by transforming wood waste. Tree species are identified in a forest area. Equipment is then selected or modified based on the identified tree species. Wood waste of the identified tree species is gathered and transfor...	01/22/2008
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
6953517	Plant for the treatment of residue In order to make it possible for an inhomogeneous residue generated in a pyrolysis plant to be separated continuously and in as fully graded a way as possible, specially selected components are combined with one anther in an advantageous configuration. An essential ...	10/11/2005
6484882	Plant for the processing of residue from a thermal waste disposal plant In order to separate a carbon-containing fraction as completely as possible from a residue, for example a pyrolysis residue, a combustible constituent is first separated from a non-combustible constituent. A carbon-containing light fraction is subsequentl...	11/26/2002
6131741	Method and device for the treatment of waste or residual waste To improve a method for the treatment of waste or residual waste (1), the waste or residual waste (1) is sorted into a fraction (16) with specifically light material and a fraction (18) with specifically heavy material first by sieving and then followed b...	10/17/2000
5865317	Woodwaste processing system with contaminate separation A system for processing wastewood. The system may be mounted on a towable chassis. The wastewood is received at one end of the system and metal contaminants are removed from the wastewood. The wastewood is then separated according to size wherein a first ...	02/02/1999
5467700	Density separation sheller for peanut grade samples A device for cleaning, shelling, and sizing nuts in a single step which includes a cleaning section, mounted in front of and in communication with a shelling section, which removes debris, small pods and loose shelled kernels using screens, separating air...	11/21/1995
5074992	Woodwaste processing system with contaminate separation A system for processing wastewood. The system may be mounted on a towable chassis. The wastewood is received at one end of the system and metal contaminants are removed from the wastewood. The wastewood is then separated according to size wherein a first ...	12/24/1991
5071541	Method and apparatus for sorting a mixture of particles A method and apparatus for sorting a mixture of particles containing a first group of particles of substantially uniform size and density and a second group of particles of substantially the same size as the particles of the first group and of different d...	12/10/1991
5035089	Blast media recovery and cleaning system A blast media recovery system is provided that recycles reusable blasting media from spent blasting materials. The system includes several different separators which classify the recovered materials by either specific gravity or size. After the materials ...	07/30/1991
5025929	Air classifier for light reusable materials separation from a stream of non-shredded solid waste An air classifier for separating light reusable materials from a stream of non-shredded solid waste is provided. The air classifier employs two operating phases. The first operating phase, the desired light fraction is entrained in an air stream and is co...	06/25/1991
5009370	Municipal solid waste material sorting trommel system A municipal solid waste material sorting system comprises a multi-stage trommel having a relatively short first stage section with relatively small holes for screening out grit, dirt, coins, small stones and the like, a second substantially longer second ...	04/23/1991
5006226	Fluidized, dry bed, ore concentrator A fluidized, dry bed, ore concentrator in which a uniform air stream is utilized to fluidize ore particles within a region defined in part by two, moving, riffled surfaces. The particles are statically charged to enhance separation of particles within the...	04/09/1991
4936978	Unit for postharvest treatment of sunflower seeds The present invention provides containers or storage bins for separate storage of the seeds of each size fraction in the course of their postharvest ripening, interposed between the primary and secondary seed cleaners and connected to the secondary cleane...	06/26/1990
4715950	Vibratory separation apparatus A vibratory particle separation apparatus of the type having at least two plateau conveying surface interrupted by a drop-out opening. A composite mixture is conveyed by a vibrating action beyond the upper plateau and over a foraminous section in the uppe...	12/29/1987
4387019	Aluminum can reclamation method A method for reclaiming aluminum cans from municipal refuse is disclosed. The method includes a first screening operation to remove materials substantially larger than the cans, a second screening operation to remove material substantially smaller than th...	06/07/1983
4278532	Air classification apparatus An air classifier comprising a rotatable open-ended drum disposed with its axis horizontal or substantially so, for receiving material to be classified, means for creating a stream of air through the drum, means for introducing material to be classified i...	07/14/1981
4245999	Method and apparatus for obtaining low ash content refuse fuel, paper and plastic products from municipal solid waste and said products A chopped mixture derived from municipal solid waste, free of ferrous metal is fed into the open upper end of a vertical rotor chamber for contact sequentially by an upper and lower high-speed rotor, with the rotor blades of the rotors further chopping th...	01/20/1981
4055486	Method and apparatus for handling solid fluidized particles A source of fluid and entrained particles including fines is connected to the entrance of a cyclone particle separator lying above a particle storage vessel that has an outlet near its bottom. The particle separator has a particle exit connected to the st...	10/25/1977

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Class 209/19 - Gaseous suspension, sifting, and stratifying