Class 34/361 - Including applying vacuum

Subclass of Class 34 - Drying and gas or vapor contact with solids
Definition: Process wherein the material treated is subjected to subatmospheric
No. of patents: 30
Last issue date: 03/02/2010

Number	Title	Issue Date
7669348	Apparatus, method and system for treating sewage sludge An apparatus, method and system is provided for treating sewage sludge by heating the same in a container to drive off pathogens and/or pasteurize the sewage sludge while the material is tumbled in the container and with moisture gases being evaporated therefrom and...	03/02/2010
7380348	Material dewatering apparatus The invention provides a pneumatic dewatering apparatus (1) for wet product. The apparatus (1) comprises essentially a cyclone chamber (2) connected to a centrifugal fan (3). Various vortex flow forming stations (6), each followed ...	06/03/2008
7351307	Method of dewatering a fibrous web with a press belt A method of dewatering a fibrous web in a paper machine including the steps of carrying the fibrous web on a side of a first fabric; contacting the fibrous web with a side of a second fabric, the fibrous web being between the first fabric and the second fabric; and ...	04/01/2008
7306680	Method of cleaning by removing particles from surfaces, a cleaning apparatus and a lithographic projection apparatus A lithographic mask is placed in a chamber which is then sealed. The gas pressure in the chamber is reduced to dislodge contaminant particles on the mask surface. ...	12/11/2007
7219442	Drying method The vacuum contact drying takes place in a device with a horizontally-arranged heated cylinder (1), a stirrer circulating with a very small wall separation, a blade (4) arranged on the stirrer and optionally an injection line (6), also arranged ...	05/22/2007
7140122	Vacuum treatment of waste stream with anti-incrustation measures A method of treating a waste stream comprises a vacuum treatment to promote disintegration of the waste material by “flash vapor” production, causing a swiftly vaporizing fraction inside the material to literally explode or shred apart the matrix of the material...	11/28/2006
7065900	Docking-type system and method for transferring and treating substrate A substrate transferring/treating system includes a substrate stacking base, a substrate transferring member for receiving/transferring the substrate from/to the base, a substrate cleaning/drying device for cleaning and drying the substrate transferred from the subs...	06/27/2006
7020980	Vacuum treatment of waste stream with anti-incrustation measures A method of treating a waste stream comprises a vacuum treatment to promote disintegration of the waste material by “flash vapor” production, causing a swiftly vaporizing fraction inside the material to literally explode or shred apart the matrix of the material...	04/04/2006
7017277	Vacuum treatment of an input stream without ruining delicate output fractions A method of separating the membrane and mineral fractions from an input stream of broken empty egg shells comprises a vacuum treatment to promote the membrane fraction to “eject” or detach from the attached or adhered scraps of mineral, ie., mineral shards or po...	03/28/2006
6978555	Conveyor of leaves and other products on a belt for laying the same products as a single layer A conveyor of leaves and other products on a belt for laying the same products as a single layer, includes at least a perforated collection belt, at least a suction hood having a surface provided with holes for passage of air flow, an air suction device coupled to t...	12/27/2005
6959503	Method and apparatus for removing liquid from substrate surfaces using suction A cost effective and environmentally sound method for quickly removing liquid from surfaces of a substrate under manufacture without leaving behind substantial residue (e.g., silicon elements from the substrate, commonly known in the field as “water marks”). The...	11/01/2005
6877249	Method of drying a lactulose solution A method of drying a lactulose solution comprises introducing the solution into a vacuum chamber at elevated temperature and at reduced pressure so that the solution forms a foam, drying the foam under reduced pressure, and milling or grinding or breaking the dried ...	04/12/2005
6754978	Vacuum treatment of waste stream A method of vacuum drying sludge or slurry input material comprises providing a closed-ended vacuum tunnel with at least two interior augers. The tunnel has an interior bed recessed with adjacent troughs separated by a low partition for accommodating the two augers ...	06/29/2004
6722055	Supporting fixture of substrate and drying method of substrate surface using the same A supporting apparatus for supporting a substrate in drying a substrate surface of the substrate including a supporting rod having a hollow interior portion and a groove configured to support a substrate on the supporting rod, the groove communicating to the hollow ...	04/20/2004
6591515	Mobile incline kinetic evaporator An apparatus is disclosed for drying materials wet with one or more solvents, particularly hygroscopic materials and materials wet with a high boiling point (low vapor pressure) solvent that are sensitive to heat. Wet material is loaded into a chamber, wh...	07/15/2003
6470595	Process and device for continuously drying protein-containing sludge A process and a device for continuously drying protein-containing sludge, in particular sewage sludge, in a fluidised bed (20) inside a drying container (13). A drying gas flows through the fluidised bed (20) while partially de-watered sludge (6) in granu...	10/29/2002
6094763	Method and device for unloading items of washing from a treatment machine In the method for unloading items of laundry from a spin-dryer or washer-dryer (20) which has a perforated operating drum (21) and a drum housing (22) with an end-side unloading opening (26) which can be closed by means of a door (27), after the spin-dryi...	08/01/2000
5882381	Thermal desorption system A thermal desorption system for the treatment of contaminated solids....	03/16/1999
5561914	Sand drying apparatus A mobile Sand Dryer is disclosed. This dryer is substantially made up of two portions. The first portion of the Sand Dryer is a wet sand tank. This tank is essentially divided into two distinct portions; an upper wet sand holding chamber and a lower sand ...	10/08/1996
5016304	Fluidized bed with moisture removing means A method and device in particular a therapeutic device for abstracting moisture and fluid from one or more bodies such as bedridden patients, whereby use is made of a bed of moisture and fluid absorbing beads, wherein said beads in the bed are being fluid...	05/21/1991
4954615	Process for drying carboxyl containing polymers of vinylidene monomers A slurry mixture comprising a carboxyl containing polymer of vinylidene monomers having at least one terminal methylene group and a polymerizing solvent is effectively dried by way of: passing said mixture through one or a plurality of preheated double pi...	09/04/1990
4644664	A method of and apparatus for drying moisture containing material The invention provides both a method and apparatus for drying moisture-containing materials, in which the material is dried in a drying chamber. A heat exchanger is provided in the drying chamber, and while air is prevented from entering the chamber, vapo...	02/24/1987
4621437	Method and apparatus for drying a solid material wetted with a solvent or solvent mixture The invention relates to a method of drying a solid wetted with a solvent or solvent mixture by causing superheated vapour of the solvent or solvent mixture as a carrier medium to flow through the material to be dried in an evaporation room, the solvent o...	11/11/1986
4574045	Removal of undesirable substances from finely divided particles Substance particulate in the general size range of minus 30 Mesh U.S. Standard to about 1 micron is separated into portions based on the densities of those components making up the total by drying to about 1% moisture and air conveying the substance throu...	03/04/1986
4517751	Azeotropic drying process A process is disclosed for drying moisture-laden feedstock of a wide variety in a continuous process stream which involves passing the feedstock to a fluid bed dryer which receives organic solvent vapors capable of forming an azeotrope with the water of t...	05/21/1985
4309829	Particle injection system for a fluid bed dryer A particle injection system for a fluid bed dryer includes a product injection tube inserted into a product containing fluid bed chamber of the dryer for injecting particulate material in a fluidized stream into the chamber of the fluid bed dryer while th...	01/12/1982
4304049	Process for thermal treatment, especially drying The invention relates to the thermal treatment of flowable material using heated contact surfaces in a fluidized bed. Known processes use a gas, often air, to fluidize the bed. This imposes limits on the temperatures that can be allowed to be reached as h...	12/08/1981
4300291	Methods and apparatus for heating particulate material A method and apparatus are provided for heating and/or drying particulate materials such as coal wherein the particulates are fed into a direct heating fluidizing chamber, carried in a stream of heated oxygen-free gas at a temperature sufficiently high to...	11/17/1981
4236318	Methods and apparatus for heating particulate material A method and apparatus are provided for heating and/or drying particulate materials such as coal wherein the particulates are fed into a fluidizing chamber, carried in a stream of heated oxygen-free gas at a temperature sufficiently high to heat the parti...	12/02/1980
3938259	Process for continuous drying of chemical products by milling-fluidisation A process for the continuous drying of chemical products by milling fluidization, in which a fluidized bed of particles of an inert carrier, e.g., quartz sand having a particle diameter of 0.5-1.0 mm., is maintained and the chemical product to be dried is...	02/17/1976

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Class 34/361 - Including applying vacuum