Class 209/311 - Multiple

Subclass of Class 209 - Classifying, separating, and assorting solids
Definition: Pluralities of flat reciprocating sifters associated otherwise
No. of patents: 37
Last issue date: 04/27/2010

Number	Title	Issue Date
7703612	Vibratory separator An apparatus for separating solids from a drilling fluid that includes a basket having two opposed spaced-apart side walls having first ends and second ends, the first ends spaced apart by an end wall connected to each of the side walls, the basket further including...	04/27/2010
7331469	Vibratory separator with automatically adjustable beach A vibratory separator having a basket for supporting screen apparatus for treating material, the basket pivotably mounted on a base, vibratory apparatus connected to the basket for vibrating the basket, the material forming a pool on the screen apparatus, and a beac...	02/19/2008
7278540	Adjustable basket vibratory separator A vibratory separator having a base, a basket movably mounted on the base and for supporting screen apparatus for treating material introduced into the vibratory separator, the basket on a base and pivotable with respect thereto, vibratory apparatus connected to the...	10/09/2007
7198156	Dam basket for vibratory separators A vibratory separator and a screen mounting basket for a vibratory separator for separating components of material introduced into the basket, the vibratory separator including a collection receptacle beneath the basket, at least one screen assembly mounted in the b...	04/03/2007
7188730	Separation system for single stream compressed recyclables A screening system designed to provide separation of multiple fractions of New Screens Fines. News Screens Fines (“NSF”) contain a mix of compressed, unmarketable recyclables that are generally less than four inches in size created as a by-product of current Mat...	03/13/2007
7147109	Sieve device for screening solid material The present invention relates to a sieve device for screening at least two solid substances preferably different from each other comprising at least one sieve module (1), comprising at least two sieve devices (2), comprising at least one fitting (3	12/12/2006
7111739	Wet fine particle sizing and separating apparatus A particle sizing and separating apparatus is disclosed. The apparatus includes a base and a frame that is movably connected to the base. A motor assembly is provided to vibrate the frame and at least two screens are connected to the frame. Means also are provided f...	09/26/2006
6953121	Vibrating screen A vibrating screen assembly supported by springs is provided which is used to size separate rock and other material. The present invention includes increasing the natural frequency of the screen assembly by stiffening the individual screen decks of the screen assemb...	10/11/2005
6922455	Gas-target neutron generation and applications Described herein are integrated systems for generating neutrons to perform a variety of tasks including: on-line analysis of bulk material and industrial process control (as shown in FIG. 1), security interrogation (as shown in FIG. 2), soil and enviro...	07/26/2005
6889846	Hybrid screen A hybrid incline/horizontal screen for separating particulate material into predetermined size fractions, the screen having multiple screen decks mounted on a frame, at least one uppermost screen deck having an inclined receiving end and a horizontal discharge end. ...	05/10/2005
6820748	Vibratory screening machine with stacked and staggered screening units A vibratory screening machine including an outer frame, an inner frame resiliently mounted on the outer frame, a plurality of screening units mounted in stacked and staggered relationship on the inner frame, each of the screening units including a screen-supporting ...	11/23/2004
6820749	Large, stationary, modular aggregate processing plant and method of manufacturing and installing same A method of manufacturing a large stationary, aggregate processing screening tower by fabricating weldment modules and preassembling them with aggregate processing equipment internal within the weldment modules, transporting the preassembled weldment modules to a fi...	11/23/2004
6715611	Vibratory separator A vibratory separator for separating components of material introduced to the vibratory separator, the vibratory separator in one particular aspect being a shale shaker, the vibratory separator including a basket for holding screening apparatus, the basket having tw...	04/06/2004
6446813	Sorting waste materials From one aspect the invention is a method of classifying waste materials comprising arranging two sieve screens, each having an inlet end and an outlet end, one above the other to define a space there between, arranging the upper screen, to be of coarser ...	09/10/2002
6431366	Vibratory screening machine with stacked and staggered screening units A vibratory screening machine including an outer frame, an inner frame resiliently mounted on the outer frame, a plurality of screening units mounted in stacked and staggered relationship on the inner frame, each of the screening units including a screen-...	08/13/2002
6412644	Vibratory separator A vibratory separator for separating components of material introduced to the vibratory separator, the vibratory separator including a basket for holding screening apparatus, the basket having two sides spaced-apart by a first end at which the material is...	07/02/2002
6367633	Screening device A screening device for screening bulk material and having a screen deck with a loading end and a discharge end, and a frame on which the screen deck is mounted. The screen deck includes a primary screening section and a secondary screening section arrange...	04/09/2002
6269954	Seal for adjoining screen assemblies in vibrating machinery A seal for adjoining screen assemblies for vibrating machinery, where each screen assembly has a frame. The frame includes a planar surface. A perforated plate with a plurality of screen cloths thereon is secured to the planar surface of the frame. A firs...	08/07/2001
6202856	Vibratory screening system and screen therefor A screen having a frame, three screen cloth layers and a laminating solidified layer with perforations therethrough. The screening layer of the screen cloth is typically of the finest mesh with increasing coarseness to the support mesh. The solidified lay...	03/20/2001
6142308	Process of and apparatus for separating components of free-flowing material contained in a carrier An apparatus for separating components of free-flowing material contained in a cotton-like, mat-like carrier, includes an air accelerator providing an accelerated air stream for tearing apart the carrier to form flakes. Positioned downstream of the air ac...	11/07/2000
6079568	Dual deck dewatering screen A vibrating dual deck dewatering unit which includes a lower screen deck and an upper screen deck. Material being processed by the unit is discharged from the upper screen deck onto the lower screen deck in such a manner that excess water is allowed to ba...	06/27/2000
6015049	Up-flow fish grader apparatus and method An apparatus for the grading of fish into various size categories, utilizing a series of panels with progressively smaller spaces between grading bars on the panels. The panels are attached to a panel box that may be raised or lowered within a holding vat...	01/18/2000
6000554	Reciprocating screening conveyor A screening conveyor (10) for conveying particulate matter, such as comminuted wood fiber, in a forward direction while also screening to separate particles over a predetermined size from small particles under a predetermined size. The screening conveyor ...	12/14/1999
5921401	Mobile screening apparatus A mobile screening apparatus can be vibrated by two similarly-constructed vibration units that are mounted on or near the front and rear walls of the box that contains the vibrating screen assembly. Each vibration unit comprises an hydraulic motor having ...	07/13/1999
5875898	Compost purification method and apparatus Mature particulate compost containing plastic film fragments resulting from the comminution of green waste and the bags containing them, is freed of the plastic fragments during screening of the compost by drawing air upwards through the compost into at l...	03/02/1999
5551575	Shale shaker screens Screens have been developed which, in one aspect, have interconnection apparatus including male projections on one first screen end which are received in female openings on another adjacent screen end. In one aspect the female openings are defined by rais...	09/03/1996
5232099	Classifying apparatus and method Classifying apparatus and methods are disclosed for the classification of extremely small solid particles of 18 mesh or less in which low frequency, high amplitude vibrations are imparted to a screen simultaneously with high frequency, low amplitude vibra...	08/03/1993
5100539	Dual-screen particle sizing apparatus and method An apparatus and method for sizing and separating particles of a material. The apparatus includes a stand, a frame having a pair of ends and an intermediate portion, and suspension assemblies attached to the stand and the frame for movably suspending the ...	03/31/1992
5023984	Deburring method and machine A method and machine adapted to deburr items having burrs, particularly pressed sponge metal compacts of zirconium or hafnium. The burrs are gently scraped away by one or more endlessly moving, substantially horizontal preferably rotary screens preferably...	06/18/1991
4986422	Method of screening solid materials and apparatus for performing same The method of screening solid materials resides in feeding a solid material onto a sifting surface and imparting oscillations to surface under the action of an effort directed at an angle to the longitudinal axis of the sifting surface, providing for movi...	01/22/1991
4892151	Ballast cleaning machine A ballast cleaning machine comprises a chain for excavating the ballast and for conveying the excavated ballast to a discharge end, a screening installation arranged to receive the excavated ballast from the discharge end of the excavating and conveying c...	01/09/1990
4855039	Vibrating screen A vibrating screen which comprises a housing having screening surfaces, the surfaces forming an angle with respect to each other, and vibrators. The housing consists of separate sections having screening surfaces arranged, one underneath the other, inside...	08/08/1989
4797204	Automatic particle-size analyzer with divided drum An apparatus for automatic screen analysis of a granular material in which the material is screened from a polygonal drum which is divided crosswise into at least two chambers by a transverse partition. A first chamber has progressively coarser screens on...	01/10/1989
4634535	Drilling mud cleaning method and apparatus A mud slurry cleaning method including steps of distributing a mud slurry across an inclined primary separation screen, vibrating the primary screen through selected movement, cycle and frequency to screen out the liquid and selected particles, concurrent...	01/06/1987
4319991	Material separating machine Apparatus for separating a composite of three materials into their particular groups includes a first screen (17) which permits the group of the smallest sized material to pass therethrough. The materials not passing through the screen (17) are fed to a t...	03/16/1982
4082657	Separator apparatus A new and improved separating device for separating particulate from a fluid stream including a plurality of screen units which are releasably held in a screen unit mounting assembly by inflatable tubes; the screen unit angular position is adjustable by a...	04/04/1978
4074867	Method and apparatus for comminuting sand clods A method and apparatus for removing form sand from a casting box and for comminuting and sand clods formed by the sand removed from the box, in which the casting box is placed on a grate having two grate portions, preferably tiltable about spaced tilting ...	02/21/1978

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Class 209/311 - Multiple