Abstract: A screen assembly is formed by attaching side edges of a plurality of screen elements to each other. Reinforcing fibers may be embedded in the material of selected screen elements. The reinforcing fibers extend in a direction in which the screen assembly will be tensioned to secure the screen assembly to a screening machine. Hook strips may be attached to ends or sides of the screen assembly to facilitate mounting the screen assembly to a screening machine.

Abstract: A screen cloth for use in a screening device for screening out oversize objects, including oil sand lumps and rocks, is disclosed comprising a supporting structure comprising two mutually opposing lateral attachment elements and a plurality of transverse stiffeners extending therebetween; and a plurality of screen segments, each screen segment having a plurality of openings, and each screen segment comprising a steel base and a plurality of anti-wear tiles attached thereon; whereby the plurality of screen segments are attached to the support structure to form a screening portion of the screen cloth.

Abstract: Screening members, screening assemblies, methods for fabricating screening members and assemblies and methods for screening materials are provided for vibratory screening machines that incorporate the use of injection molded materials. Use of injection molded screen elements provide, inter alia, for: varying screening surface configurations; fast and relatively simple screen assembly fabrication; and a combination of outstanding screen assembly mechanical and electrical properties, including toughness, wear and chemical resistance. Embodiments of the present invention use a thermoplastic injection molded material.

Abstract: A screen support frame comprising, a perimeter disposed in a horizontal plane, defining a vertical direction normal to said plane, said perimeter reinforced by an arrangement of reinforcing wires, said arrangement comprising a first array of substantially parallel structural wires extending between opposing regions of the perimeter in a first horizontal plane, a second array of substantially parallel structural wires extending between opposing regions of the perimeter in a second horizontal plane, said first and second arrays of structural wires being aligned at an angle to each other and in contact with each other thus forming a plurality of contact points between structural wires of the first and second array respectively, the arrangement further comprising at least one additional structural wire, said additional structural wire extending between opposing regions of the perimeter and being positioned parallel to, and substantially vertically spaced from, a wire in the first array of structural wires, and in

Abstract: A safety barrier is formed of framing, including a guard rail that defines the infill below the rail without the use of pickets. The infill is covered with mesh screen, which may be made of nylon which has greater tensile strength than conventional fiberglass. The mesh screen is held to the framing by an extruded base. The base has a central channel between two flat spline grooves. Flat splines hold mesh screen in their respective grooves more securely than conventional friction-based channel splines. A metal plate is positioned in the central channel to enables screws that secure the base to be tightened to hold it to the framing better. The elimination of pickets in the infill leaves the view unobstructed and allows other treatments of that portion of a deck or porch that are more aesthetically pleasing without compromising safety.

Abstract: A molded polyurethane vibratory screen including a body having opposite side edge portions, upper and lower edge portions, an upper surface and a lower surface, first members extending between the side edge portions and the second members extending between the lower edge portion and the upper edge portion, third members substantially parallel and extending transversely between the side edge portions and having multiple first members therebetween, the fourth members substantially parallel and extending transversely between the lower edge portion and the upper edge portion and having multiple second members therebetween, reinforcement members molded integrally with the third and fourth members.

Abstract: A screen panel with improved apertures for mining and quarrying industries adapted to be mounted on a screen deck, including a screening surface made up of materials such as herein described formed on a reinforcing frame, said screen panel having suitably designed apertures for allowing materials to pass through, said apertures having resilient ribs (5) with protrusions (4) on both sides configured with respect to each other such that adequate open space exists, whereby clogging of materials pursuant to screening operations are substantially reduced.

Abstract: A screen panel for mining and quarrying industries adapted to be mounted on a screen deck including at least a screening portion having one or more rider bars and a bottom reinforcement portion, the screen panel being designed such that the rider bars are adapted to be replaced from the screening portion as and when required. The rider bars are attached to a portion of the screening portion and/or the reinforcement portion by button type snug fitting.

Abstract: An impact screen cloth for use in a screening device for screening out oversize objects in a material flowing in a direction is provided, comprising a metal plate having a perimeter and comprising a plurality of openings therethrough and forming a grid having longitudinal ligaments substantially parallel to the direction of the material flow and transverse ligaments substantially perpendicular to the direction of the material flow; and a number of longitudinal wear bars positioned on an equal number of longitudinal ligaments to cover a substantial portion of the number of longitudinal ligaments without substantially interfering with the openings.

Abstract: A screen panel with wear protective apertures for mining and quarrying industries adapted to be mounted on a screen deck, including a screening surface made up of materials such as herein described formed on a reinforcing frame, said screening surface having suitably designed apertures of desired shape for allowing materials of desired size to pass through, said apertures having walls made of abrasion resistant material such as herein described said walls having plurality of slits(1) cut along the vertical as well as horizontal line in the top and bottom portion of the apertural walls, whereby utmost flexibility of the apertures is ensured simultaneously ensuring wear protection.

Abstract: A screening or screen for use in classifying material. The screening includes a plurality of warp screening elements. Preferably, the plurality of warp screening elements is a plurality of warp wires. The plurality of warp screening elements includes a first warp screening element having a plurality of horizontal undulations. The plurality of warp screening elements further includes a second warp screening element. Preferably, one of the first warp screening element and the second warp screening element is a shaped wire having two substantially flat sidewalls. At least one retaining member is operably associated with the plurality of warp screening elements to form an integral screen segment having a plurality of openings for permitting material to be classified to pass through the openings. The first warp screening element has a cross-sectional height or shape different from the cross-sectional height or shape of the second warp screening element.

Abstract: There is provided a screen frame adapted for use in a shaker to separate solids from liquid/solid mixture and to which woven wire mesh is to be attached, comprising a plurality of intersecting elongate members (12) defining a plurality of openings (10), or cells, wherein at least one protrusion (26) in the form of an elongate rib extends partway across each opening (10).

Abstract: A sorting screen for sorting material comprises a row of rotatable, driven shafts mutually spaced in a conveying direction. Each shaft extends transversally to said conveying direction and carries carrying a row of radially extending rotor bodies for intermittently urging material on the sorting screen upward and in conveying direction. The rotor bodies of each of said rows are mutually spaced in longitudinal direction of the respective shaft by spacers. Each spacer is a tubular spacer and each rotor body is provided with at least a recess or a number of projections retaining a respective end face of a respective tubular spacer.

Abstract: A disc screen includes a shaft, a first disc mounted on the shaft, and a second disc mounted on the shaft. An interfacial opening (IFO) extends between the first disc and the second disc. A width of the IFO as measured between the first disc and the second disc varies according to a rotational position of the shaft.

Abstract: A screen panel for mining and quarrying industries adapted to be mounted on a screen deck, including a screening surface made up of materials such as herein described formed on a reinforcing, said screening surface having suitably designed apertures of desired shape for allowing materials of desired size to pass through, said, said reinforcing being an external reinforcing (2), whereby screening efficiency of said screen panel is substantially enhanced.

Abstract: A frame over which woven wire mesh is to be stretched and secured to form a sieving screen and which can be used to screen solids from drilling mud recovered from down-hole when drilling for oil or gas. The frame is a rectilinear moulded plastics frame having edge regions by which it is secured in place in a shaker. Within the frame is a plurality of rectilinear windows formed by an orthogonal array of intersecting ribs also of moulded plastics material. Some of the ribs are internally reinforced by rigid metal members which extend orthogonally between hollow box-section members which define a sub-frame for reinforcing the four edge regions of the frame. The orthogonal members are secured at their ends to the sub-frame. The ends of the sub-frame members are joined at the four corners of the sub-frame. In this way not are only the edge regions of the frame reinforced internally but so also are some of the orthogonally intersecting ribs, so as thereby to produce a rigid frame for the screen.

Abstract: Screening members, screening assemblies, methods for fabricating screening members and assemblies and methods for screening materials are provided for vibratory screening machines that incorporate the use of injection molded materials. Use of injection molded screen elements provide, inter alia, for: varying screening surface configurations; fast and relatively simple screen assembly fabrication; and a combination of outstanding screen assembly mechanical and electrical properties, including toughness, wear and chemical resistance. Embodiments of the present invention use a thermoplastic injection molded material.

Abstract: A molded polyurethane vibratory screen including a body having opposite side edge portions, upper and lower edge portions, an upper surface and a lower surface, first members extending between the side edge portions and the second members extending between the lower edge portion and the upper edge portion, third members substantially parallel and extending transversely between the side edge portions and having multiple first members therebetween, the fourth members substantially parallel and extending transversely between the lower edge portion and the upper edge portion and having multiple second members therebetween, reinforcement members molded integrally with the third and fourth members.

Abstract: A molded polyurethane vibratory screen including a body having opposite side edge portions, upper and lower edge portions, an upper surface and a lower surface, first members extending between the side edge portions and the second members extending between the lower edge portion and the upper edge portion, third members substantially parallel and extending transversely between the side edge portions and having multiple first members therebetween, the fourth members substantially parallel and extending transversely between the lower edge portion and the upper edge portion and having multiple second members therebetween, reinforcement members molded integrally with the third and fourth members.

Abstract: A vibratory separator including a screen frame and a screen attachment. The screen attachment including at least one vertically disposed latch on the screen frame, at least one vertically disposed catch on the screen frame, and at least one bearing surface proximate the at least one vertically disposed catch. Additionally, a method of securing adjacent screens including inserting a vertically disposed latch of a first screen into a catch of a second screen, wherein the inserting includes contacting the latch of the first screen with a bearing surface of the second screen adjacent the catch of the second screen. The method further includes forming a planar alignment of the first screen to the second screen.

Abstract: The present disclosure relates to a comminution apparatus including a rotational reducing unit that is rotatable about an axis of rotation. The rotational reducing unit includes a plurality of material reducing components that are mounted to a carrier. The material reducing components are rotated by the carrier in a first direction about the axis of rotation. The comminution apparatus also includes a screen at least partially surrounding the rotational reducing unit. The screen defines a plurality of sizing slots that have slot lengths and slot widths. The slots are elongated along the slot lengths such that the slot lengths are longer than the slot widths.

Abstract: An impact screen cloth for use in a screening device for screening out oversize objects in a material flowing in a direction is provided, comprising a metal plate having a perimeter and comprising a plurality of openings therethrough and forming a grid having longitudinal ligaments substantially parallel to the direction of the material flow and transverse ligaments substantially perpendicular to the direction of the material flow; and a number of longitudinal wear bars positioned on an equal number of longitudinal ligaments to cover a substantial portion of the number of longitudinal ligaments without substantially interfering with the openings.

Abstract: A shaker apparatus including a basket having an upstream side, a downstream side, and two side walls, at least one wedge guide and one support rail disposed on each side wall, and at least one screen assembly. The support rails and the wedge guides may be configured to engage the screen assembly. The screen assembly may have one or more layers of screen mesh mounted on a screen frame. The screen frame may include a first and a second side rail, each having an upstream end, a downstream end, a top surface, and a bottom surface. A slope of the top surfaces intermediate the upstream end and the downstream end may be different than a slope of the bottom surfaces intermediate the upstream end and the downstream end.

Abstract: A screening having a plurality of warp elements. The plurality of warp elements includes first and second warp elements each having a plurality of undulations oriented in any desired manner including but not limited to horizontal or vertical. At least one retaining member is operably associated with the plurality of warp elements to form an integral screen segment having a plurality of openings. The first warp element has at least one characteristic different from the second warp element to prevent blinding of the screen segment. The at least one characteristic affecting movement of the first warp element and the second warp element when the screen segment is used to classify material such that at least one of amplitude and frequency of movement of the first warp element is different from that of the second warp element when subjected to the same operating condition.

Abstract: A screen panel with wear protective apertures for mining and quarrying industries adapted to be mounted on a screen deck, including a screening surface made up of materials such as herein described formed on a reinforcing frame, said screening surface having suitably designed apertures of desired shape for allowing materials of desired size to pass through, said apertures having walls made of abrasion resistant material such as herein described said walls having plurality of slits(1) cut along the vertical as well as horizontal line in the top and bottom portion of the apertural walls, whereby utmost flexibility of the apertures is ensured simultaneously ensuring wear protection.

Abstract: A screen assembly for separating solid materials of differing sizes in a material stream, having a support, and a screen arrangement placed upon the support, wherein the support has at least one seal placed on the support, the seal configured to interface with a mounting surface of a shaking apparatus.

Abstract: A screen panel for use in a vibrating screen device. The screen panel has a plurality of in-flow slots and cross-flow slots arranged in a regular pattern to provide enhanced open area for a given slot size.

Abstract: A screen panel retainer assembly, that is utilizable with a vibrating separatory machine, is configured with a plurality of discrete, mushroom-shaped screen panel retainers. Each such retainer has a retainer head that is generally in the shape of a portion of a cylinder, such as a right cylinder. A shank connects each such retainer head to a suitable retainer bar. The retainer bar can be adapted to be attached either to screen stringer tubes of the vibrating separatory machine, or to underlying cross tubes and end cross tubes. The screen panels, which are to be secured to the vibrating separatory machine, have complementary shaped mushroom-shaped screen panel retainer head receiving chambers in their side surfaces. Two such panel edges define a whole chamber. The retainer heads are metal whereas the screen panel edges are resilient. The mushroom-shaped heads securely snap into their complementary chambers yet can be removed from those chambers when the screen panels have to be replaced.

Abstract: A rider bar (5) is essentially made of elastomeric material. The rider bar (5) is intended for a surface of a screen cloth (1) or a wear-resistant lining over which pieces or particles of material are intended to move. The rider bar (5) comprises a wear-resistant element (6).

Abstract: A perforated plate for use in a high g vibratory device in the separation of solid particles within a slurry. The plate is rigid and has perforations with a span of no greater than 3/16 inch.

Abstract: A screen panel for use in a vibrating screen device. The screen panel has a plurality of in-flow slots and cross-flow slots arranged in a regular pattern to provide enhanced open area for a given slot size.

Abstract: Apparatus is provided, in or for a screen separator for sieving materials, for clamping one or more sieve screen frames 78 within the confines of a chassis 40 of the separator to prevent egress of material from the separator. The apparatus comprises a sheath 50 extending around and embracing the chassis 40 and one or more expandable elements 66 for urging the sheath 50 against the chassis 40 and the screen frame(s) 78 to impart uniform clamping pressure to the clamped elements. The sheath 50 is designed to provide ease of mounting and release.

Abstract: A screen panel for mining and quarrying industries adapted to be mounted on a screen deck, including a screening surface made up of materials such as herein described formed on a reinforcing frame, said screening surface having suitably designed apertures of desired shape for allowing materials of desired size to pass through, said apertures having walls (2) made of abrasion resistant material such as herein described, whereby retention of said desired shape of said apertures is ensured for a substantially long period of time.

Abstract: A screening panel is provided for screening particulate materials. The screening panel includes a peripheral frame and a plurality of ribs. The peripheral frame has an upper surface, a lower surface, and an outer peripheral surface interconnecting the upper surface and lower surface. Further, the peripheral frame defines an opening. The ribs extend across the opening and define a screening surface. Each of the plurality of ribs has a substantially flat upper surface. The screening panel further includes at least one generally arcuate raised member extending from the upper surface of each of the plurality of ribs. The raised members facilitate screening the particulate materials.

Abstract: A system, method, and apparatus for detecting wear in a screening arrangement is disclosed. The system, method, and apparatus can include a sensor that is configured to provide a notification signal when a surface of a screen panel has worn to a threshold level. The threshold level can be based at least in part on the amount of wear that requires replacement of a screen panel to prevent breakthrough or contamination. The notification signal provided by the sensor can be used to identify which screen panel or region of screen panels has been worn to the threshold level so that the screen panels can be replaced in a timely manner. The sensor may be coupled to a conductor embedded in one of the screen panels that is altered when a screen panel has worn to a threshold level, triggering the sensor to provide the notification signal.

Abstract: The invention concerns screen panels of the kind used in vibratory screening operations. According to the invention, the screen panels (10) include recycled polyurethane, typically that recovered from worn screen panels. In one particular embodiment in which the panel has an upper, perforated screening section (16.1) for performing a screening action and an operatively lower section (16.2) beneath the screening section, the upper section is of molded, virgin polyurethane and the lower section comprises a reinforcing frame (12) and recycled polyurethane molded about the reinforcing frame. The invention envisages the use of blends of virgin and recycled polyurethane as well as method of manufacturing screen panels and methods of handling worn screen panels.

Abstract: The invention relates to a screen for a screening machine for screening a product into two fractions. To avoid detrimental effects to the quality of the product due to damage at the screen mesh of a screen (9), the screen is provided with a metal layer, in particular in the manner of a conduction path, wherein the electrical resistance of said layer is measured and wherein changes in the resistance indicate damages.

Abstract: A screen for a vibratory separator, the screen including at least two layers of screening material, including a first layer and a second layer, the first layer made of a plurality of intersecting first wires, the second layer made of a plurality of intersecting second wires, the first wires including first shute wires and first warp wires, the second wires including second shute wires and second warp wires, certain of the first warp wires aligned with a second warp wire, and/or certain of the first shute wires aligned with a second shute wire. 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 CFR 1.72(b).

Abstract: The invention relates to a method and a device for screening first particles out of a granulate comprised of first and second particles by conveying the granulate along a first screen surface which extends outward from a vibrating device, wherein the first particles have an aspect ratio a1, with a1>3:1, and the dimensions of the second particles allow them to fall through the mesh of the first screen surface.

Abstract: A screening disk for use on a roller of a roller screen for screening an ore feed is disclosed, which includes first and second opposing side working surfaces, and provisions for mounting the screening disk on a shaft of the roller. At least one of the first and second side working surfaces has a plurality of protrusions operable to extend outwardly into an interstice between the applicable side working surface and a side working surface of an adjacent mounted screening disk. A spacer may be disposed in the one interstice for confining an extent of the one interstice to a region disposed generally between the third working surface and the shaft. A screening disk may have a keyway configured to receive a key for coupling the body of the screening disk to the shaft for rotation therewith.

Abstract: The invention concerns a screen panel (100) for use in vibratory screening operations. The screen panel has a rectangular bounding frame (102) and a screening surface (104) within the frame. The screening surface is formed by elongate, generally parallel, flexible screen elements (106) which are of zigzag shape in plan and which span across the frame. The zigzags of adjacent elements are out of phase with one another, and opposing zags (106.3) of adjacent elements are narrowly separated. The configuration is such that adjacent screen elements define diagonally spaced, generally rectangular screen apertures (108). The zags present generally flat, opposing surfaces (106.4).

Abstract: A screening module retaining member 10 includes a body member 12 defining a passage 16. A retaining element 14 is displaceably arranged in the passage 16. The retaining element 14 is displaceable between a first, non-retaining position in which the retaining member is accessible from a first end of the body member 12 and a second, retaining position in which the retaining element 14 is received within the passage 16 and acts on at least a part 20 of the body member 12 for retaining the body member 12 in position relative to a component of a screen deck. A locating arrangement 22 is associated with the first end of the body member 12 for locating a screening module relative to the screen deck and for inhibiting lateral movement of the screening module relative to the body member 12.

Abstract: A system is provided for sorting solid materials, that system comprising: a plurality of shafts disposed upon bearings, the bearings being fixed on an inclined slope; each shaft of the plurality of shafts being configured with a plurality of sorting discs, the sorting discs being configured with a receiving cavity and material contact fingers; spacers configured to be received by the receiving cavity of the discs and to maintain a desired space between the discs; and the spacers being configured with a hexagonal or pentagonal cross section.

Abstract: A screen for use in distributing a fluid in a process flow system. The screen provides support, and provides for the ability to clean particulates from the screen. The screen includes profiled wires affixed to a support, where the support provides channels to distribute the fluid over the screen. The support includes spacing to improve the cleaning of particulates from the screen.

Abstract: A screen panel for use in a vibrating screen device. The screen panel has a plurality of in-flow slots and cross-flow slots arranged in a regular pattern to provide enhanced open area for a given slot size.

Abstract: A screening deck for the screening of crushed stone material includes a plurality of screening elements arranged adjacent one another. At least one side of each screening element is non-parallel with respect to a longitudinal direction of the screening deck. The screening deck includes at least two different types of screening elements which are arranged at different heights in the screening deck for creating narrowing passages and/or winding paths and/or steps for the material traveling on the screening deck.

Abstract: A laminate screen for a vibratory separator, the screen including a product screen mesh layer having a plurality of wires. The screen further including a structural screen mesh layer having a plurality of wires secured to the product screen mesh layer with a thermoplastic polymer, wherein the structural screen mesh layer is configured to provide structural integrity to the laminate screen, and wherein a diameter of the product screen mesh layer wires is less than a diameter of the structural screen mesh layer wires.

Abstract: A filtering flow box for receiving a supply of plastic pellets from a bottom-unloading tower silo and removing undesirable plastic strands (“angel hair”) from the pellets before they are processed for manufacturing. The box has an angled entry wall for laterally channeling pellets to an angled filter. The pellets pass through the filter and angel hair collects on the filter's upstream surface. The filter can be removed from the box at an angle having a vertical component for cleaning, thus allowing any pellets that have accumulated on top of the filter to fall back into the box.

Abstract: An improved screen is shown for use in separating smaller granular particles from larger granular particles. The improved screen has ridges or bumps formed into it's contact surface thus creating a series of obstacles that the granular material must pass over, or around, as it moves from the point of initial contact with the screen surface until it exits said screen surface.

Abstract: A screen for use in distributing a fluid in a process flow system. The screen provides support, and provides for the ability to clean particulates from the screen. The screen includes profiled wires affixed to a support, where the support provides channels to distribute the fluid over the screen. The support includes spacing to improve the cleaning of particulates from the screen.