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Class 209/250 - Fluid


Subclass of Class 209 - Classifying, separating, and assorting solids
Definition: Devices in which the material is delivered to sifters, generally
No. of patents: 131
Last issue date: 02/19/2008


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NumberTitleIssue Date
4436618Recovery of coal from coal handling operations
This specification discloses a greatly simplified method and system for recovering coal from a particulate coal bearing slurry (1) in which an appropriate hydrophobic liquid or emulsion of hydrophobic liquid in water (2) is introduced into the inlet of a ...
03/13/1984
4435285Sorting apparatus
A sorting apparatus for sorting elastic balls for cleaning the inner surfaces of heat transfer tubes of a heat exchanger. The apparatus comprises a casing having a cylindrical cross-section, an inlet pipe connected to an upper portion of the wall of the c...
03/06/1984
4424632Synthetic resin pellet dehydrating apparatus
An apparatus for dehydrating synthetic resin pellets comprising a plurality of interconnected truncated conically shaped dehydrating screens disposed vertically with their smaller diameters being uppermost, whereat wet pellets are forcibly directed so tha...
01/10/1984
4399622Fluid intake openings for a suction dredger
A dredging apparatus is afforded having the improvements of a wedge-shaped dredge foot housing both a fluid opening and a filter member, the intake opening being located on the underside of the dredge foot and the filter member being located above the flu...
08/23/1983
4394259Vacuum pneumatic conveying apparatus and method for transferring food products
Vacuum pneumatic conveying apparatus and method are utilized to transfer food products, such as fish, from a boat to a processing factory directly or via a tender vessel. Fish products such as salmon, are withdrawn from a fishing boat through an intake no...
07/19/1983
4387518Separable liquid flow screening means for excluding oversized, slender objects carried by a liquid, and dredge means including same
This invention provides means to screen long, slender objects from a flowing fluid, and more particularly provides means to clear jammed objects therefrom. The screening means comprises a set of opposed, aligned, undulating surfaces, preferably formed as ...
06/14/1983
4359383Placer mining apparatus
A portable, dry-placer mining apparatus is provided with a vacuum chamber which defines a contained region of lower-than-atmospheric pressure which establishes the mode or means for drawing material into the chamber. The material is then ejected therefrom...
11/16/1982
4347675Dredging means having means for excluding oversized slender objects
This invention provides dredging means having means to screen long slender particles wherein the long dimension extends in the direction of flow through a fluid-flow conduit. The screening means comprises a pair of opposing corrugated surfaces, the folds ...
09/07/1982
4344843Apparatus and method for separating debris from textile fiber tufts
Debris is separated from pneumatically conveyed textile fiber tufts moving through a conduit by diverting a flow of air and debris from the conduit and returning the flow of air to the conduit so as to restore the volume of air flowing through the conduit...
08/17/1982
4337150Fiber fractionating device
A device for fiber fractionation to analyze for coarse particles or chips in which fractionation takes place by washing a sample of the fiber material on a horizontally disposed slotted plate submerged in water, a central bundle-type nozzle which extends ...
06/29/1982
4334986Separator for a mixture of a suspension and coarse heavy particles
A separator for separating coarse particles from cellulose pulp suspensions and the like comprises a first separation chamber provided with an inlet for incoming mixture, a first outlet for the light fraction, and an outlet for an intermediate fraction en...
06/15/1982
4333572Separation of pulp flow
The method is intended for separating a flow of pulp containing impurities of coarse particles, partly light and partly heavy particles, by means of a main sieve or the like, into at least one pulp flow and one coarse reject flow. The coarse reject flow i...
06/08/1982
4316768Pulse free stock screen and combination pump
A paper machine screening apparatus generally includes a centrifugal pump member mounted for rotation about the axis of a tubular screen plate. A delivery passageway extends concentrically about the pump impeller for receiving pumped stock flow and includ...
02/23/1982
4305507Disposable diaper reclaiming apparatus
Defectively made absorbent articles (e.g., disposable diapers) are shredded for reclamation, and their fluff fillers, mixed with undesired scraps, are fed downwardly towards a forwardly moving horizontal stretch of a conveyor screen. Fluff fibres are forc...
12/15/1981
4300926Separation apparatus
A duct increasing in cross-sectional area is provided with a screen means on its upper wall. An adjustable baffle is hingedly fixed to the lower wall of the duct at the inlet. Air-borne material carried in an air stream introduced at the inlet is separate...
11/17/1981
4284500In-line pressurized wet screening apparatus
An in-line apparatus for separating oversize particles from a pressurized fluid slurry which comprises: a rigid, hollow body member capable of withstanding the pressure of the fluid slurry, the body member having a valved slurry inlet port and a slurry ou...
08/18/1981
4278531Apparatus and method for transporting items
A method and an apparatus for transporting items such as chopped nuclear fuel pins from a receiving station to a discharge station. The apparatus contains a liquid for transporting the items in an inlet duct which extends downwardly from the receiving sta...
07/14/1981
4273647Apparatus for and a method of separating grinding bodies and ground material in an agitator mill
A separator system for separating grinding bodies and ground material in an agitator mill wherein stationary and moveable or oscillating separator members in a grinding chamber define a variable gap which narrows when a moveable separator member moves aga...
06/16/1981
4269701Cyclone separator for the removal of heavy particles and dust particles from fibre material
A cyclone separator for separating heavy particles and dust particles from fibre material. The separator includes a cyclone housing (2), an inlet tube (9) that opens substantially tangentially into the housing (2), an overflow pipe (6) for the removal of ...
05/26/1981
4268294Method and apparatus for producing fiber product
A filter system and method for extracting entrained lint particles from an effluent air stream prior to discharge into the atmosphere. The system and method are intended for use in combination with a cyclonic separator of the type having a vertical settli...
05/19/1981
4251356Apparatus for classifying the constituents of a pneumatically conveyed tobacco-containing stream
The outlet of a pneumatic conveyor delivers a mixture of tobacco leaves and sand to the upper end of an arcuate duct which is located below a rotating air withdrawing wheel. That wall of the duct which faces the outlet of the pneumatic conveyor has holes ...
02/17/1981
4251352Inclined separation screen for agitation tank
An improvement in the screen circumscribing or partially circumscribing the rim of an agitation tank is disclosed. A screen substantially impermeable to the charcoal is provided which is inclined inwardly at an angle between about 35° and 55° from verti...
02/17/1981
4251355Apparatus for separating snakeskins and fines from polymeric pellets
Apparatus for separating snakeskins and fines from pellets in a collection of polymeric material wherein a first nozzle impinges the collection of polymeric material in a stream of air on a moving screen having a mesh size such that the screen will allow ...
02/17/1981
4250024Glass bead separator
A glass bead separating apparatus and method are disclosed, for use with a slurry blast cabinet. The system is capable of continuous operation, so that glass beads which are broken and undersized can be separated out of the slurry along with debris from t...
02/10/1981
4249655Cyclone dust analyzer for determining microdust content in fibers
An apparatus for removing dust from a fiber sample for subsequent analysis is disclosed. A first upper cylindrical chamber containing a fiber sample has a tangential air jet and a radial air jet installed to swirl and tumble the fiber sample in a cyclonic...
02/10/1981
4236998Process and apparatus for purifying a fibrous suspension
In removing impurities, such as printing inks, binders, fiber fragments and pigments, from a fibrous suspension of waste paper containing water, the fibrous suspension is directed downwardly over an inclined sieve for removing the impurities through the s...
12/02/1980
4229286Apparatus and method for removing dust from tufts of opened cotton fiber
Apparatus and method for removing dust and trash from tufts of opened cotton fiber stock includes entrance and exit ducts for airborne transport of the tufts to and from a housing having passages for the tufts therethrough, a screen disposed therein, a pa...
10/21/1980
4229285Dust removal in an opening and cleaning apparatus for fibrous materials
In the opening and cleaning of fibrous materials apparatus is provided which includes a plurality of rotatable beaters within a housing, curved under grids beneath each rotatable beater, baffle plates above and between the beaters, a perforated screen pos...
10/21/1980
4227997Mobile non-polluting cleaning and processing apparatus and method
A mobile vehicle having self-contained apparatus for classifying, cleaning and reconstituting granular or pelletized materials, such as catalysts used in chemical plants, without polluting the surroundings, is adapted to travel from plant to plant over co...
10/14/1980
4213856Method and apparatus for classifying solids and transporting solids-laden fluid
A method and apparatus for classifying solids and transporting a solids-laden fluid containing large particle size solids which will tend to plug a tubular transport means and small particle size solids which will pass through the transport means without ...
07/22/1980
4213855Sifting equipment for fine-grained bulk material, particularly flour
Sifting equipment for fine-grained bulk material, particularly flour, provided with a transit chamber inserted in the transmission line of the bulk material and containing a sieve, exposed to the action of a blower, is improved by having the transit chamb...
07/22/1980
4204949Device for wet classification of a mixture of solid components according to size
The device for wet classification of a mixture of solid components with rect to size, according to the invention, has two circular chutes "2" and "2a" situated tangently next to each other at the same level and equipped with one common feeding nozzle "3"...
05/27/1980
4190678Method and apparatus for dewatering vegetables and the like
A frame structure having a pre-dewatering unit fixedly mounted thereon and a final-dewatering and inspection table unit movably mounted thereon. The pre-dewatering unit includes a vertically extending receiving compartment through which the mixture of wat...
02/26/1980
4174276Household grain cleaner
Small batches of grain for household use are vacuum cleaned in a portable apparatus which can receive vacuum power from the hose of a household vacuum cleaner. Grain requiring cleaning is introduced into the device through a transparent top door and gravi...
11/13/1979
4162768Apparatus for separating paper fibres from portions of polyethylene film material
An apparatus is disclosed for separating polyethylene film from paper fibre. The polyethylene film contaminated with paper fibres is subjected to treatment that converts the paper fibres into substantially uniform balls which are separated by gravity by b...
07/31/1979
4153543Fractionating apparatus
A fractionating apparatus for separating fine fibers from coarse fibers in water containing a certain amount of air. A spray nozzle is arranged in a vessel and directed towards a screening cloth incorporated as a part of the vessel walls and which, on its...
05/08/1979
4140281Separation of dirt and bark from wood chips
In a timbering operation wherein the felled trees are fed into a chipper for conversion to chips at the timbering site the chips are fed into a trailer-mounted rotary cylindrical screen which separates the chips from dirt and fine bark particles. Preferab...
02/20/1979
4129259Apparatus for pulping waste paper materials
Recovery of paper fiber for reuse from waste paper materials containing plastic sheet and film is facilitated by the combination of a pulper in which the waste paper materials are pulped in a pulper equipped with a junk remover connected with the bottom o...
12/12/1978
4071304Separation of products in granular form
In apparatus for treating and separating products in granular form, a container is provided with fluidization and vibration means, the grains and the pulverulent solid are subjected to the fluidization treatment only in a vertical portion of the bed, the ...
01/31/1978
4058868Capsule cleaning and polishing
An apparatus and a method of cleaning and polishing capsules in which the capsules are blown against one side of an electrically charged screen to clean dust therefrom by their impacting on the screen. Air is drawn through the screen from the other side o...
11/22/1977
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