Superposed Patents (Class 209/315)
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Patent number: 11911794Abstract: Tensioner systems, methods and apparatus are described for tensioning drive belts of vibratory screens.Type: GrantFiled: December 23, 2022Date of Patent: February 27, 2024Assignee: Superior Industries, Inc.Inventors: Ed Sauser, Paul Flickinger
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Patent number: 11185802Abstract: An example nonlimiting embodiment of the present invention provides a flow divider that includes a slurry receiving compartment and a discharge arrangement having a plurality of discharge apertures. The slurry receiving compartment is arranged to relatively uniformly flow a portion of a slurry into each of the discharge apertures. The discharge apertures may be arranged linearly and/or horizontally such that the portions of the slurry exits each of the discharge apertures at a relatively even flow rate and feed feed boxes connected to vertically tiered screening surfaces of a screening machine.Type: GrantFiled: September 11, 2019Date of Patent: November 30, 2021Assignee: DERRICK CORPORATIONInventors: Mike Peresan, James Colgrove
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Patent number: 11110490Abstract: A system and method sort, separate, organize and store particles of different material, shape, and size utilizing a multi-level system of containers with sieves at different heights. The system employs a combination of gravitational downward forces on the individual pieces and omnidirectional manual forces applied by the user on the system to automatically sort and organize particles of different shape and size into the respective containers.Type: GrantFiled: February 21, 2019Date of Patent: September 7, 2021Inventor: Lloyd Harvey Koerner
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Patent number: 10533385Abstract: A dual deck vibratory separator is provided having an improved mud flow path that provides for higher flow capacities overall is provided. The shaker has a lighter basket possessing a full-size upper deck extending across the width and length of the basket. Operational efficiency and operability is improved with flow deflecting and energy absorbing plates disposed intermediate along the mud flow path. The screen assemblies are secured with improved wedges, improved wedge guides, screen cushions, and cushion stops on transverse structure members for longer screen and slide life. An optional vacuum tray on the finishing trays further enhances recovery of drilling fluid. Maintenance, when required, is improved through ease of upper screen removal for inspection and access. Inclined side windows on each side of the basket may provide cleaning and viewing access.Type: GrantFiled: June 6, 2016Date of Patent: January 14, 2020Inventor: Edward A. Kutryk
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Patent number: 10507494Abstract: A material processing vibrating screen with diverting systems configured to deliver material, via a plurality of material diverters, to locations closer to a feed end of the screen than would otherwise be done in the absence of the diverters. The diverters can be fixed to a cross member, the underside of a screen, and may be adjustable and easily replaceable. The materials for the deflectors can vary depending upon the material being screened. The screen may also be a variable sloped vibrating screen.Type: GrantFiled: September 28, 2018Date of Patent: December 17, 2019Assignee: Terex USA, LLCInventor: Edwin J Sauser
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Patent number: 10137389Abstract: A filtering assembly includes a screen housing having two sidewalls and two end walls, defining a perimeter with a length and a width. The screen housing also includes a top face and a bottom face. A plurality of screen segments are positioned on the top face of the screen housing, such that the plurality of screen segments on the top face provide a screening surface area less than a total surface area of the top face, and a plurality of screen segments are positioned on the bottom face of the screen housing, such that the plurality of screen segments on the bottom face provide a screening surface area less than a total surface area of the bottom face. A total screening surface area of the filtering assembly is greater than the total surface area of the top face.Type: GrantFiled: December 10, 2014Date of Patent: November 27, 2018Assignees: M-I L.L.C., M-I Drilling Fluids UK Ltd.Inventors: Eric Cady, Graham Alexander Robertson, LaTosha Moore, Claire Rosaleen Galloway McLean, Andrew Ralph
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Patent number: 10111403Abstract: A disposable kitty litter box is provided. The disposable kitty litter box includes a base portion and a plurality of layer portions each including a plurality of apertures. In an assembled configuration, the plurality of apertures of each layer portion of the plurality of layer portions are offset from each other to keep kitty litter from passing between a plurality of apertures of a top layer portion.Type: GrantFiled: December 3, 2015Date of Patent: October 30, 2018Inventor: Steve Sareyani
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Patent number: 10086407Abstract: A material processing vibrating screen with diverting systems configured to deliver material, via a plurality of material diverters, to locations closer to a feed end of the screen than would otherwise be done in the absence of the diverters. The diverters can be fixed to a cross member, the underside of a screen, and may be adjustable and easily replaceable. The materials for the deflectors can vary depending upon the material being screened. The screen may be also be a variable sloped vibrating screen.Type: GrantFiled: November 9, 2015Date of Patent: October 2, 2018Assignee: TEREX USA, LLCInventor: Edwin J Sauser
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Patent number: 10046365Abstract: A multi-deck screening assembly includes upper and lower screen decks, each having first and second deck sections. The upper deck's first deck section has first-size grading apertures, and its second deck section is downstream of the first deck section with second-size grading apertures larger than the first-size apertures. The lower deck's first section has third-size grading apertures and its second section is downstream of its first section with fourth-size grading apertures larger than the third-size apertures. A gap between the lower deck's first and second sections allows oversize material from the lower deck's first section to pass through to a first collection region. A diverter is positioned between the upper and lower decks and over the gap, whereby material from the upper deck collected on the diverter passes onto the lower deck's second section, thereby preventing undersize material that passes through the upper deck from passing directly through the gap.Type: GrantFiled: May 31, 2017Date of Patent: August 14, 2018Assignee: CDE Global LimitedInventors: Christopher McKeown, Kevin Vallelly
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Patent number: 9457381Abstract: Disclosed herein are embodiments of a vibrating screen (10) for separation of materials such as ores in mining, quarrying, and mineral processing. The vibrating screen (10) herein disclosed may include a chassis (100) with two side walls (102) with a plurality of support members (104) therebetween and a screen mounting system that receives screen panels (120). At least one of the side walls (102) may have a recess (132) that receives a protrusion (160) of a mounting plate (114) of a vibrator (126).Type: GrantFiled: April 30, 2013Date of Patent: October 4, 2016Assignee: FLSmidth A/sInventors: Christopher Gordon, Gordon Ong
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Patent number: 9409208Abstract: A screen assembly for grading and dewatering sand includes a frame upon which is mounted a deck having a plurality of apertures therein. The frame is mounted on a base and includes a vibration generating device for imparting vibration to the deck. The deck has a first portion inclined downwardly from a first end to second end for grading sand thereon, and a second portion for dewatering sand thereon. The first deck portion is inclined downwardly at a first angle, and the second portion is arranged substantially horizontally or inclined upwardly at a second angle. Sand may be delivered onto the deck at or adjacent the first end of the first portion, so that undersized particles of sand passing through the apertures in the first portion of the deck as oversized particles pass onto the second portion of the deck, whereby the oversized particles are dewatered.Type: GrantFiled: February 24, 2015Date of Patent: August 9, 2016Assignee: CDE Global LimitedInventors: Anthony Convery, Glenn Sloan
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Patent number: 9192963Abstract: An apparatus has a frame with a screen portion and a discharge portion adjacent thereto. The frame has a bottom surface and a substantially planar top surface. The top surface extends from the screen portion to the discharge portion. An opening located in the screen portion of the frame extends through the frame from the top surface to the bottom surface. A spout formed in the discharge portion has a shape of a hollow cylinder and extends through the frame from the top surface to the bottom surface. A system has a separator with an inlet into which material to be separated enters. A unitary screen frame has a screen portion and a discharge spout with a planar top surface extending from the screen portion to the discharge spout. A first portion of the material entering the inlet flows from the planar top surface to the discharge spout.Type: GrantFiled: May 2, 2014Date of Patent: November 24, 2015Assignee: M-I L.L.C.Inventors: Robert A. Lunnemann, Bradley Jones
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Patent number: 9174241Abstract: A screen including a plurality of decks vertically stacked above one another, at least one of the decks bearing at least one sieve, the screen including means for vertically separating the decks from one another, suitable for selectively adjusting a vertical distance between each deck of the plurality of decks and at least one other deck of the plurality of decks.Type: GrantFiled: March 28, 2014Date of Patent: November 3, 2015Inventor: René Brunone
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Publication number: 20150108046Abstract: A compact mobile variable angle vibrating screen with a suspension and dampening system configured to accommodate variable angles and exhibit acceptable vibration levels; especially during power up and power down surge vibration at the variable angles. The system comprises a group of bi-directional dual pivot leg vibration damper mechanisms which are effective only during times of excessive vibration such as during the power up and power down vibration surges.Type: ApplicationFiled: December 22, 2014Publication date: April 23, 2015Inventors: Edwin J Sauser, Jason Kreider
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Patent number: 8925731Abstract: A drive device is provided for a screening body of a screening machine, in particular for mineral materials for crushing, such as oil sand, with a drive motor, a synchronous transmission gear which is operatively connected thereto and has at least two output shafts which rotate in pairs in antiphase at the same rotation speed with respect to one another. The drive motor and the synchronous transmission gear are mounted in a stationary manner, separately from the screening body, at the side alongside the screening body, and do not oscillate therewith. Each output shaft has a single associated horizontal shaft which has unbalance elements, and which is connected to the output shaft by means of a rotationally rigid universally jointed shaft and is arranged with its axis parallel to the adjacent shaft and transversely with respect to the conveying direction of the screening body.Type: GrantFiled: July 17, 2008Date of Patent: January 6, 2015Assignee: ThyssenKrupp Industrial Solutions AGInventors: Dietmar Riedel, Siegbert Surrey, Detlef Papajewski
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Patent number: 8915377Abstract: A method of determining the length distribution in the population of glass or plastic fibers in, for example, a fiber reinforced polymeric article wherein the fibers recovered from a representative article are immersed in a non-polar liquid and the combination of the liquid and fibers is passed through a sieve stack while an applied high electric field produces a relatively uniform alignment of the fibers as they pass through the sieves thereby improving the accuracy of the filtering process.Type: GrantFiled: June 21, 2012Date of Patent: December 23, 2014Assignee: Toyota Motor Engineering & Manufacturing North America, Inc.Inventor: Umesh N. Gandhi
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Patent number: 8869988Abstract: A cooler for particulate product includes a substantially enclosed housing. A first cooling screen is disposed in the housing and is configured to receive the product. The first cooling screen is configured to move the product along a surface by gravity when the first cooling screen vibrated. A duct is coupled to the first cooling screen to move cooling fluid through the first cooling screen. A second cooling screen is disposed in the housing below the first screen and is configured to receive the product after discharge from the first screen. The second screen is configured to move the particulate product along a surface when vibrated. A second duct is coupled to the second screen to move cooling fluid through the screen. A collector receives the particulate product after moving along a surface of the second screen. A vibrator is coupled to the housing and vibrates the housing.Type: GrantFiled: May 8, 2008Date of Patent: October 28, 2014Assignee: M-I L.L.C.Inventors: Henry P. Stachura, Donald J. Canavan, Joachim M. Zaun
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Patent number: 8869986Abstract: An apparatus (25) for use in screening a liquid and solids mixture feed (2) comprises a conduit (18), including a screening portion (22) that is formed and arranged to divide a liquid and solids mixture feed flowing through the conduit. The feed (2) is divided into a first, cleaned stream (C1) comprising liquid and solid particles of below a selected size limit, and a second, concentrated, stream (24) comprising liquid, and particles above the selected size limit. The apparatus (25) may be a stand alone module, part of a system with other solids and liquids separating equipment or an integral part of a solids and liquid separator such as a shale shaker. Methods of using the apparatus (25) are also described.Type: GrantFiled: April 26, 2012Date of Patent: October 28, 2014Inventor: Marshall G. Bailey
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Patent number: 8839958Abstract: A method and a device for screening aggregates and/or soils with a screening deck, where each point of the screening deck revolves continuously in the same rotating direction along a circular path. This movement is effected by the fastening frame of the screening deck being bearing-mounted upon at least two eccentric shafts, where each eccentric shaft is in turn bearing-mounted on a device body with bearings, through the midpoints of which extends a rotation axis of the eccentric shaft. Additionally, a throw axis spaced from the rotation axis of the eccentric shaft extends through the midpoints of bearings present between each eccentric shaft and the fastening frame, so that when the device is in operation, the throw axis revolves around the rotation axis along a circular path continuously in the same direction. All mass forces of movable structural components have been balanced with respect to rotation axes.Type: GrantFiled: October 10, 2012Date of Patent: September 23, 2014Assignee: Salmonbay Consulting OyInventor: Markku Jonninen
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Publication number: 20140061102Abstract: A material processing vibrating screen with diverting systems configured to deliver material, via a plurality of material diverters, to locations closer to a feed end of the screen than would otherwise be done in the absence of the diverters. The diverters can be fixed to a cross member, the underside of a screen, and may be adjustable and easily replaceable. The materials for the deflectors can vary depending upon the material being screened. The screen may be also be a variable sloped vibrating screen.Type: ApplicationFiled: August 27, 2013Publication date: March 6, 2014Inventor: Edwin J. Sauser
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Patent number: 8556083Abstract: Methods and systems are disclosed employing a shale shaker for processing a mixture of drilling fluid and solids with multiple screen assemblies and conversion apparatus for switching flow to the screen assemblies between series flow and parallel flow; and in one aspect, a screen or screens for screening lost circulation material.Type: GrantFiled: June 24, 2009Date of Patent: October 15, 2013Assignee: National Oilwell Varco L.P.Inventor: George Alexander Burnett
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Patent number: 8443982Abstract: A process for classifying water-absorbing polymer beads, wherein the polymer beads are separated into n particle size fractions by means of at least n screens and n is an integer greater than 1.Type: GrantFiled: September 24, 2007Date of Patent: May 21, 2013Assignee: BASF AktiengesellschaftInventors: Uwe Stueven, Rüdiger Funk, Matthias Weismantel, Jürgen Schröder, Domien van Esbroeck
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Patent number: 8312995Abstract: Methods for automatically controlling a vibratory separator for processing drilling fluid are disclosed. The methods include introducing material to a vibratory separator, and sensing with a sensor apparatus a state parameter indicative of operation of the vibratory separator and providing a signal indicative of a value of the state parameter to a control apparatus. Then, with the control apparatus, automatically controlling the vibratory separator based on the level of the state parameter.Type: GrantFiled: May 24, 2010Date of Patent: November 20, 2012Assignee: National Oilwell Varco, L.P.Inventors: Paul Dufilho, Eric Scott
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Patent number: 8225939Abstract: An appearance inspection apparatus 1 has an aligning and conveying device 25 which has an aligning and conveying member 26 with one or a plurality of conveying passages, and a vibration exciter for alignment 37 for applying a vibration to the aligning and conveying member 26 and which aligns the inspection objects in a row and conveys them in each of the conveying passages, a slide-down mechanism 40 which has slide-down passages separately connected to the respective conveying passages of the aligning and conveying member 26 an provided to be tilted downward with respect to extensions of the slide-down passages, an imaging device 60 disposed in the vicinity of the slide-down passages for imaging the inspection objects sliding down in the slide-down passages, and a sorting device 80 for analyzing the images of the inspection objects captured by the imaging device, judge the qualities thereof, and sorting the inspection objects sliding down in the slide-down passages on the basis of analysis results.Type: GrantFiled: March 1, 2010Date of Patent: July 24, 2012Assignee: Daiichi Jitsugyo Viswill Co., Ltd.Inventors: Raymond Nelson, Osamu Suzuki
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Patent number: 8146749Abstract: A plan sifter for sifting or sieving, flour-like or granular products, includes at least one compartment. Each sifting compartment has a dedicated drive, so that the base surface available can be better utilized, and the sifting capacity can be better adjusted to actual needs.Type: GrantFiled: November 22, 2007Date of Patent: April 3, 2012Assignee: Bühler AGInventor: Jürgen Moosmann
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Patent number: 8113356Abstract: Methods and systems are disclosed employing a quad-tier shale shaker for processing a mixture of drilling fluid and solids which solids include, in one aspect, lost circulation material (and/or material of size similar to the size of the lost circulation material). This abstract is provided to comply with the rules requiring an abstract which will allow a searcher or other reader to quickly ascertain the subject matter of the technical disclosure and is submitted with the understanding that it will not be used to interpret or limit the scope or meaning of the claims, 37 C.F.R. 1.72(b).Type: GrantFiled: October 10, 2008Date of Patent: February 14, 2012Assignee: National Oilwell Varco L.P.Inventor: George Alexander Burnett
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Patent number: 8113355Abstract: Classifying kits useful in separating gold, other precious metals, gems, collectable rocks, fossils, and archaeological artifacts from earth material. Classifying sieves and other parts of the classifying kits herein are configured to be used within a bucket and can readily be removable therefrom. Depending on the parts used and the goals of a user, the kits herein can be used with dry sifting methods or with water.Type: GrantFiled: May 3, 2011Date of Patent: February 14, 2012Inventor: Mark Peterson
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Patent number: 8074805Abstract: An extra-large vibrating screen with duplex statically indeterminate mesh beam excitation body and plate type combined bearing beam comprises plate type flat and rigid statically indeterminate combined bearing beam (12) arranged in a screen box (1), a plurality of Y-shaped statically indeterminate combined reinforcing beams (5) arranged on the side plates (3) of the screen box alternately, duplex statically indeterminate supporting plates (22) linking a plurality of mesh beams (21) to the statically indeterminate connecting plate (4) and the side plate (3) so as to form a container made of a beam system, the vibration exciters (10) in the statically indeterminate mesh beam unit comprising eight sets of vibration exciters, which are aligned in pair horizontally and linked together through universal couplings (9), and connected to the duplex statically indeterminate mesh beam excitation body (11) to form a highly rigid integral vibrating assembly.Type: GrantFiled: December 19, 2007Date of Patent: December 13, 2011Assignee: China University of Mining and TechnologyInventors: Yuemin Zhao, Chengyong Zhang
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Patent number: 8002116Abstract: A single or multi-deck vibrating stackable material screening unit having a plurality of screen frames each with a plurality of compression cross members, a plurality of tension cross members, two air manifold cross members, a plurality of air operated isolation mounts, a plurality of mounting blocks, fastened to an air operated isolation mount; a vibrating screen tensioner supporting a vibrator motor and a body over and connected to the mounting blocks over all compression cross members wherein the body has a length longer than its width and the length extends from the feed inlet to the discharge spout, two relocatable removable detachable lifting mechanisms, two clevis assemblies connecting to at least two tang assemblies, and particulate falls through the screen cloth from the first screen frame to the second screen frame, while discharging a predetermined diameter particulate.Type: GrantFiled: October 9, 2009Date of Patent: August 23, 2011Inventor: James N. Cato
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Patent number: 7987990Abstract: A system, methodology, and product to sort, organize and store individual members of building/construction toy sets utilizing a multi-level system of bins with sieves at different heights using user applied forces and gravity to automatically sort and organize pieces into bins, while providing a fun hands-on sorting experience for kids. The location, size and shape of the sieves can be designed to optimize sorting speed and user experience for specific toy manufacturer brands including Lego™ bricks made by Lego Corporation. The system also functions as a storage unit for the pieces, during and after sort. A flexible binding mechanism holds the system together during sort. The system is designed with see-through materials to monitor the status of the sort and find specific pieces in respective bins. A set of wheels enables mobility. The “hands-on” involvement in sorting also makes this an entertaining and educational apparatus for kids.Type: GrantFiled: April 1, 2009Date of Patent: August 2, 2011Inventor: Akshay Srivatsan
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Patent number: 7987992Abstract: The invention describes a process and apparatus producing a dense coke fraction from a first particulate coke fraction having a first average density and a first average particle size distribution, stratifying the coke fraction in a density separator into at least two fractions, the at least two fractions comprising a light coke fraction and the dense coke fraction. The dense fraction having an average density greater than the first average density and a particle size distribution substantially equivalent to the first average particle size distribution. The apparatus includes an inclined oscillating table comprising a gas-pervious deck, and a gas mover.Type: GrantFiled: January 8, 2008Date of Patent: August 2, 2011Assignee: Rio Tinto Alcan International LimitedInventors: Pierre Laurin, Nathalie Bouchard, Weixia Chen, Cyril Gaudreault, Yvon Ménard
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Patent number: 7775371Abstract: A device for the separation of waste materials in accordance with their densities is provided and includes a vat which is fillable with a fluid for the separation of detritus by means of floatation and decantation. Conveyer belts are provided for the removal of the supernatant and decanted materials. A vibrating sieve is provided for the pre-separation of debris prior to introduction into the vat. The vibrating sieve extracts large materials and small materials which tend to produce silt in the vat. Means are provided for the removal of the decanted sludge.Type: GrantFiled: November 21, 2007Date of Patent: August 17, 2010Inventor: Jesús Sánchez Torres
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Patent number: 7740761Abstract: The present invention provides a vibratory screening apparatus (1) for use in removing solids from a liquid feed, and a basket (4) therefore. The apparatus comprises a static outer housing (2), and a floating basket vibratable by a vibrator device (10). The basket mounts a stack (7) of screen assemblies (8) provided with respective flow directing trays (9) for receiving filtrates from the screen assemblies. A flow distributor (15) divides the feed into at least first and a second feed streams and directs them onto respective screen assemblies, and receives from the flow directing trays, filtrates from respective screen assemblies.Type: GrantFiled: June 14, 2004Date of Patent: June 22, 2010Assignee: Axiom Process LimitedInventor: Marshall G. Bailey
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Patent number: 7721896Abstract: Apparatus is provided, in or for a screen separator for sieving materials, for clamping one or more sieve screen frames within the confines of a chassis of the separator to prevent egress of material from the separator. The apparatus comprises a sheath extending around and embracing the chassis and one or more expandable elements for urging the sheath against the chassis and the screen frame(s) to impart uniform clamping pressure to the clamped elements. The sheath is designed to provide ease of mounting and release.Type: GrantFiled: November 12, 2004Date of Patent: May 25, 2010Assignee: Russell Finex LimitedInventors: Nigel John Mainwaring, Everard James Walton
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Patent number: 7591375Abstract: A vibratory conditioner includes a plurality of screens having a planar surface through which there is a material feed opening, wherein each screen is retained in vertical alignment such that all planar surfaces are parallel, a chamber within which the parallel screens are retained, means for conditioning air within the chamber to a predetermined temperature and a predetermined humidity level, and a vibratory generator operable to vibrate the chamber and fluidize particles of material retained on a top surface of each screen and to move the fluidized particles in a first direction.Type: GrantFiled: June 28, 2006Date of Patent: September 22, 2009Assignee: M-I L.L.C.Inventor: Eric Johnson
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Patent number: 7510084Abstract: A material separation device for use in an internal area of a material handling system. The separation device includes a separator member with a body with a plurality of material passageways extending therethrough. The separator member includes a material exit portion. The device also includes an attachment mechanism for securely attaching the separator member within the internal area of the material handling system. A method of manufacturing a material separation device is also disclosed.Type: GrantFiled: October 28, 2005Date of Patent: March 31, 2009Inventor: Cairn L. Bishop
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Publication number: 20090026113Abstract: An extra-large vibrating screen with duplex statically indeterminate mesh beam excitation body and plate type combined bearing beam comprises plate type flat and rigid statically indeterminate combined bearing beam (12) arranged in a screen box (1), a plurality of Y-shaped statically indeterminate combined reinforcing beams (5) arranged on the side plates (3) of the screen box alternately, duplex statically indeterminate supporting plates (22) linking a plurality of mesh beams (21) to the statically indeterminate connecting plate (4) and the side plate (3) so as to form a container made of a beam system, the vibration exciters (10) in the statically indeterminate mesh beam unit comprising eight sets of vibration exciters, which are aligned in pair horizontally and linked together through universal couplings (9), and connected to the duplex statically indeterminate mesh beam excitation body (11) to form a highly rigid integral vibrating assembly.Type: ApplicationFiled: December 19, 2007Publication date: January 29, 2009Inventors: Yuemin Zhao, Chengyong Zhang
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Patent number: 7147109Abstract: 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) with a bottom with sieve (4), closing the respective fitting (3).Type: GrantFiled: July 17, 2002Date of Patent: December 12, 2006Assignee: hte Aktiengesellschaft the high throughput experimentation companyInventors: Wolfram Stichert, Mario Hermann, Frank Guellich
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Patent number: 7111739Abstract: 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 for feeding particles to each screen from two opposing sides of each screen and for evenly distributing the particles onto the screens. A pan is disposed beneath each screen to receive sized particles that pass through the screens and an outlet receives oversize particles that pass over the screens.Type: GrantFiled: July 25, 2003Date of Patent: September 26, 2006Assignee: Sizetec, Inc.Inventor: Masataka Tsutsumi
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Patent number: 6988624Abstract: The vibrating screen has a frame, a screen box, two pairs of springs supporting the screen box over the frame and a driven eccentric shaft mounted under the screen box. The vibrating screen is characterized by a loading pan affixed to the upper end of the screen box. The loading pan has a central region over the upper springs such that a flexion of the structural members under the loading pan is minimum. The loading pan is wider than the screen box and has sloped sides forming a funnel on the upper end of the screen box to retain the side portions of a load until most of the central portion has been moved to the screen box. In another aspect, each spring has torsion bushings therein, with a pair of arms joining the torsion bushings and forming an angle pointing toward the lower end of the screen box.Type: GrantFiled: October 31, 2003Date of Patent: January 24, 2006Inventor: Douglas J. MacNaughton
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Patent number: 6825136Abstract: A filtering screen comprises a fine woven wirecloth filtering mesh (4) disposed above a coarse woven wirecloth support mesh (2). An intermediate woven wirecloth mesh (3) is disposed between the fine woven mesh (4) and the coarse woven mesh (2), the intermediate mesh (3) extending over a proportion of the area of the screen at or towards the rear thereof, said proportion being in the range of 20% to 40% of the area of the screen, and preferably substantially one third of the area of the screen.Type: GrantFiled: November 25, 2002Date of Patent: November 30, 2004Assignee: United Wire LimitedInventor: Gordon James Cook
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Patent number: 6820748Abstract: 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 surface and a chamber underlying the screen-supporting surface and an outlet duct in communication with the chamber, an undersize trough underlying the plurality of stacked and staggered screening units, a plurality of inlet ducts in the undersize trough with each of the inlet conduits in communication with one of the outlet conduits, and an oversize trough underlying the undersize trough and the stacked and staggered screening units.Type: GrantFiled: June 17, 2002Date of Patent: November 23, 2004Assignee: Derrick Manufacturing CorporationInventor: Thomas M. Fallon
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Publication number: 20040099578Abstract: Screen assemblies for a vibratory separator and methods of using them, the screen assemblies in one aspect including a first screen portion having a first end and a second end spaced apart from the first end, a second screen portion adjacent the second end of the first screen portion, the second screen portion projecting down from the second end of the first screen portion.Type: ApplicationFiled: June 3, 2003Publication date: May 27, 2004Inventors: Joseph C. Winkler, Thomas C. Adams, Kenneth W. Seyffert, David Wayne Largent, David L. Schulte, Charles N. Grichar, Guy L. McClung
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Patent number: 6736271Abstract: A panel for screening material, comprising: a frame defining a screening area; a tensioned fiber reinforcement attached to the frame and spanning across the screening area; and a non-tensioned resilient coating surrounding the fiber reinforcement so as to form a plurality of openings to screen the material. A method of making a screen for screening material and a vibratory screening machine apparatus incorporating such a screen panel are also disclosed.Type: GrantFiled: June 18, 2002Date of Patent: May 18, 2004Inventor: Peter C. Hall
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Publication number: 20040016682Abstract: 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 for feeding particles to each screen from two opposing sides of each screen and for evenly distributing the particles onto the screens. A pan is disposed beneath each screen to receive sized particles that pass through the screens and an outlet receives oversize particles that pass over the screens.Type: ApplicationFiled: July 25, 2003Publication date: January 29, 2004Inventor: Masataka Tsutsumi
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Publication number: 20030173268Abstract: In a coal preparation plant which receives a raw coal feed and separates the raw coal feed into clean coal feed and refuse feed slurries using a media based separation process, an apparatus is provided for use therein. The inventive apparatus simultaneously processes the raw coal feed and clean coal feed and refuse feed slurries, while occupying minimal floor space within the coal preparation plant. The inventive apparatus includes a unitary vibrating screen assembly having a length and a width, wherein the width of the vibrating screen assembly is partitioned into three screen sections extending the length of the vibrating screen assembly. A deslime screen section receives the raw coal feed and separates the raw coal feed into coarse and fine sized fractions as the raw coal feed moves along the length of the deslime screen section. A refuse screen section receives the refuse feed slurry and removes separation media therefrom as the refuse feed slurry moves along the length of the refuse screen section.Type: ApplicationFiled: March 12, 2002Publication date: September 18, 2003Inventors: Larry A. Watters, Daniel S. Placha
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Publication number: 20030116477Abstract: 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 field work site where the tower is to be erected on a foundation, aligning the modules and stacking the modules in layers and then bolting adjacent modules together. The stacked-up modules are adapted to receive aggregate at the top uppermost module and permit the aggregate to be processed by screening, blending, and sizing into aggregate product as it moves downwardly by gravity through the modules and their processing equipment for final collection of the product at the ground level. A large stationary, aggregate processing screening tower has weldment modules preassembled with aggregate processing equipment internal within the modules.Type: ApplicationFiled: January 24, 2003Publication date: June 26, 2003Applicant: ASTEC INDUSTRIES, INC. (a Tennessee corporation)Inventors: J. Don Brock, William R. Gray
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Patent number: 6575304Abstract: A vibrating screen apparatus for sizing materials is shown that has a minimum of moving parts therein. A vibrating motor is mounted below longitudinal vibrating bars. The vibrating bars are set on air mounts, which air mounts are between the vibrating bars and cross braces connected to the frame. The vibrating bars press against the underside of a vibrating screen to form a crown therein when the air mounts are inflated. The vibrating screen is stretched between the sides of the frame by tensioning rails. A shroud over the top of the frame is secured in place. Multiple size materials can be produced by stacking multiple vibrating screen apparatuses.Type: GrantFiled: May 2, 2001Date of Patent: June 10, 2003Inventor: George F. Cudahy
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Patent number: 6564947Abstract: A screening screen assembly for a vibratory screening machine including an apertured plate, and a subassembly of an undulating support screen and fine screening screen and finer screening screen bonded to each other by a fused plastic grid and bonded to the apertured plate. A method of fabricating a screening screen assembly for a vibratory screening machine including the steps of providing a support screen, superimposing a plastic grid onto the support screen, superimposing a finer screening screen onto the fine screening screen, applying heat and pressure to the superimposed screens to fuse the plastic grid and thereby form a flat bonded laminate subassembly by causing the fused plastic grid to permeate the fine screen and the finer screen and the support screen, forming the bonded laminate subassembly into an undulating shape, providing an apertured plate, and bonding the undulating bonded subassembly to the apertured plate.Type: GrantFiled: November 16, 2001Date of Patent: May 20, 2003Assignee: Derrick Manufacturing CorporationInventor: John J. Bakula
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Patent number: 6565698Abstract: A method for making a screen assembly for a vibratory separator, which, in certain aspects, includes placing a first layer of screening material below a glue application apparatus, and applying with the glue apparatus an amount of glue in a pattern to a portion of the first layer of screening material, unrolling part of a second layer from a second roll and positioning the part of the second layer adjacent part of the first layer to which glue has been applied, moving the part of the second layer and the part of the first layer between opposed rotatable spaced-apart rollers to press together the part of the second layer and the part of the first layer to form a pressed-together layer of first and second layers of screening material. In certain aspects hot glue is used and is cooled following application of the second layer on the first layer.Type: GrantFiled: March 2, 2000Date of Patent: May 20, 2003Assignee: Varco I/P, Inc.Inventors: Thomas C. Adams, Kenneth W. Seyffert, David W. Largent, David L. Schulte, Jr., Charles N. Grichar, Vincent D. Leone, Jeffrey E. Walker, Guy L. McClung, III