Abstract: A fastening device (1) for fastening polyurethane screening panels (6,7) to a screen (8) is made up of a composite fastener and a disc stringer support. The composite fastener is a steel bolt (2) and nut (3) with a polyurethan holding component (4) and a polyurethane cover (9) for the bolt head. The disc and stringer support is a stringer (31) serving as a joist spanning between girders of the screen frame, the stringer (31) having no flange and being narrow and deep, with discs (35) set in the top surface of the stringer at spaced apart positions, having a hole (36) in each disc for the bolt and nut and a recess (38) in the stringer underneath each disc for the nut. The bolt and nut have a toggle (14) which allows insertion into the hole in the disc and tightening the bolt and nut entirely from above the screen.

Abstract: A method and apparatus for separating material, particularly excavated material is presented. The method and apparatus utilize a releasable and interchangeable screen assembly which is positioned on top of a frame having a slanted grate. The screen assembly includes bar members which traverse the top of the screen and inverted hook members attached to a top surface of the bar members to enable an equipment bucket to engage the inverted hook members in order to lift and move the screen assembly.

Abstract: In the rotationally symmetrical screen for fiber suspensions with a series of straight profiled bars which extend the direction of the screen axis and form slot-shaped screen openings between them, and with several ring-shaped profiled bar supports lying in planes extending perpendicularly to the screen axis, each of the profiled bar supports having in its edge region adjacent to the inlet side of the screen a series of cutouts opening towards the inlet side of the screen for insertion of the profiled bars, with the shape of these cutouts corresponding to the configuration of the cross-sectional regions of the profiled bars held positively in these cutouts, in order to simplify insertion of the profiled bars into the cutouts of the profiled bar supports each profiled bar has for each profiled bar support a recess which decreases the width of this cross-sectional region of the profiled bar, and the recesses lie outside the profiled bar supports in the finished screen.

Abstract: A support structure for mounting a vibratory motor on a vibratory frame of a vibratory screening machine consisting of spaced flexures for mounting between the ends of a vibratory motor and the spaced sides of a vibratory frame of a vibratory screening machine, each of the flexures having a first end for connecting to the vibratory motor, and a second end for connecting to the vibratory frame of the vibratory screening machine, each of the flexures having a width dimension and a thickness dimension which is smaller than the width dimension, with the width dimensions extending substantially perpendicularly to the spaced sides, and the thickness dimensions extending substantially perpendicularly to the width dimensions.

Abstract: Interconnectible screen assemblies for vibratory separators or shale shakers and methods for manipulating such screen assemblies which, in certain aspects, include a first screen assembly and a second screen assembly positioning at least a portion of the first screen assembly with respect to screen assembly holding apparatus, connecting a second screen assembly to the first screen assembly, and moving the first screen assembly and the second screen assembly together with respect to the screen assembly holding apparatus.

Abstract: A method and means of extending the life of a cloth screen(5), in particular of the type used for screening drill cuttings from drill fluid, where the cloth screen (5) is placed in a covering manner over the through openings (2) of a sieve plate (1), and where, after a period of operation, the sieve plate (1) is turned upside down and that upon the occurrence of a broken wire in the cloth screen (5), an infill plate (20) is sealingly mounted in the opening (2) of the sieve plate that corresponds to the broken wire.

Abstract: The invention concerns the field of mineral processing by gravitational method and can be used in ore and coal mining as well as other industries.

Abstract: In combination, a dump truck mountable particle screener for mounting atop the dump body of a dump truck, and a dump truck. The dump-truck mountable particle screener has a support frame, a screen deck, a plurality of spring assemblies connecting the screen deck to the support frame, and a vibrating mechanism attached to the screen deck for imparting the vibratory motion to the screen deck. The dump truck receives the particle screener atop the dump body.

Abstract: A sieving device having a mesh screen detachable from a frame body is capable of easily removing particulate material remained on the mesh screen and cleaning of the mesh screen and being installed even in a confined space requiring a sanitary condition. The particulate material sieved through the mesh screen is prevented from getting out of a collecting container or scattering around. With a vibration generating means in the sieving device, sieving vibration can be efficiently produced with a relatively small power with preventing coagulation and agglomeration of the particulate material. By corrugating the bottom of the mesh screen, the efficiency of sieving the particulate material be increased remarkably.

Abstract: A screen assembly for a vibratory separator having, in one aspect, a frame with a plurality of openings therethrough, screening material on the frame over the openings, the frame having an end area at a material exit end of the frame, and end apparatus at the end area for facilitating material movement over the end area; in one aspect, non-smooth areas on top of the screen assembly to impede solids movement on such areas and/or to direct them off such areas; vibratory separators with such a screen assembly; and methods of their use.

Abstract: A screen assembly for a shale shaker comprising a panel and a support structure, the panel having an area provided with a multiplicity of apertures and at least one layer of screening material arranged over the multiplicity of apertures, wherein said panel is removable from said support structure.

Abstract: A vibratory separator comprising a basket and a side rail for fixing at least a portion of a periphery of a screen assembly to said basket, characterised in that the vibratory separator further comprises means for pulling a screen assembly down within a periphery of a screen assembly to fix a screen assembly in said basket.

Abstract: A module is provided for screening or diverting particulate material. A method for producing a module for screening or diverting particulate material is also provided. Each module comprises either a screening member having an array of sieve apertures of a predetermined size defined therein for allowing particulate material up to the predetermined size to pass through the module or a diverting member or redirecting the flow path of the particulate material. A plurality of posts removably and interlockingly supports at least one reinforcing support frame and at least one module. Each reinforcing support frame is interlockably mounted onto the posts, and is readily detachable therefrom. Each module is disposed on the interlocking posts and is mounted onto, and readily detachable from, the reinforcing support frame. Each module is further positioned on the frame such that any particulate material passing through the module passes through the frame.

Abstract: The invention pertains to a sieve bed for a sifting machine, consisting of rectangular sieve elements (10), which are attached to a support frame (1) with their edges abutting each other, the support frame being provided with mushroom-shaped mounting pins (3), each of which is provided with a head which engages in an interlocking manner in corresponding recesses (11a and 11b) of the sieve elements (10).

Abstract: A screening module for a screening assembly includes a substantially rectangular, planar screening member having a plurality of screening apertures extending through it the member having a pair of sides extending parallel to a direction of flow of material over the member and a pair of sides extending transverse to a direction of flow of material over the member. A mounting means is formed integrally with the screening member as a one-piece unit for securing the member to an underlying structure. A part of the mounting means is arranged along each side of the screening member and only the parts of the mounting means associated with one pair of sides having reinforcing with the parts of the mounting means associated with the other pair of sides being without reinforcing.

Abstract: A screen is described wherein one end of the screen frame is provided with an upwardly open channel profile and the other end with a similar but downwardly open channel profile, such that the outboard edge of an upwardly open profile will fit within the channel of a downwardly open profile provided along the edge of an adjoining screen frame, to enable two such screens to be connected together and to enable linear movement in a direction generally perpendicular to the line of engagement and generally in the plane of at least one of the two screens, to be transmitted from one screen frame to the other. The engagement of one profile by another also serves to close the gap between the two screen frames and prevent at least particulate material from passing therebetween. Preferably the engagement prevents liquid from passing therebetween.

Abstract: A screening machine with a screen frame (1) which can be made to oscillate by means of a drive, comprises screen cheeks and is supported in an elastic manner on a solid base, preferably by means of springs (4), and a swing frame which is elastically coupled thereto and comprises thrust rods (5) elastically coupled to the screen cheeks as well as swing frame crossbeams (7) which connect the same and a screening surface (9, 10) which is formed by screening mats (11), with the screening mats (11) being alternatingly compressed and stretched at least in sections by alternating fastening to the screen frame (1) and to the swing frame.

Abstract: A vibratory screen separator using screens includes a base and a housing resiliently mounted to the base and divided into two wall portions held together by a clamp band. Brackets are located high on the housing and lifts are diametrically positioned to either side of the housing. The lifts are pivotally mounted to the base through feet to move from a first position engaging the brackets to a second position displaced from the housing. Each lift includes a fluid cylinder and shaft mounted to an arm. A head associated with the shaft of the fluid cylinder and shaft engages a slot on the associated bracket and can operate to lift a portion of the housing with the clamp band removed. In this lifted state, access is provided to screens clamped within the housing between housing portions.

Abstract: A screening panel assembly (10) includes a frame (12) on which a screening panel (14) is supported. The frame (12) has frame members and intermediate members with the panel (14) being secured only to the frame members of the frame (12).

Abstract: A tool designed for separating manure, loose hay and wet bedding from the stall of an animal. The tool comprises a rectangular frame supporting a plurality of spaced parallel rods. The rods extend downwardly at an angle from a wall of the stall such that the lower ends of the rods or the portion of the grate supporting the rods extend into a receiver such as a muck bucket or wheel barrow. When refuse is tossed from a floor of the stall onto the grate, then manure, loose hay and soiled or wet bedding will flow down the grate into the receiver, while reusable bedding will pass through the spaces between the rods for later reuse. The frame is provided with side members which converge at their lower ends to funnel refuse into the container.

Abstract: A screen assembly for a vibratory separator, the screen assembly including screening material with opposed spaced-apart sides including a first side and a second side, a side mount on each of the opposed spaced-apart sides, each side of the opposed spaced-apart sides having an edge portion, and each edge portion held within a side mount; a vibratory separator with such a screen assembly; and methods of their use.

Abstract: A vibrating screen assembly having a tubular frame. The tubular frame includes a pair of opposed tubular sides and a pair of opposed tubular ends. An upstanding lip extending from each side and extending from each end forms a rim enclosure. A ledge extends inwardly from the opposed sides. A perforated plate with a plurality of screen cloths thereon is positioned within the rim enclosure and secured to a planar surface of the frame. A slot in the tubular sides and tubular ends forms a continuous channel and an elastomeric gasket is press fit into the slot and held therein without adhesives or fasteners.

Abstract: A vibratory screening machine having opposite sides with a plurality of stationary aligned tensioning members mounted on one side and a plurality of nut actuated movable tensioning members mounted on the opposite side and a vibratory screening screen mounted on the stationary and movable tensioning members. The tensioning members have upstanding fingers which are received in apertures in the plates of the vibratory screen, and the edge portions of the vibratory screen include screening material which extends all of the way to the extreme edges of the supporting plate and the fingers are below the screening material. Also, the tensioning structure is mounted on the side walls of the vibratory screening machine below the vibratory screen.

Abstract: A sieving device with a vibratory supporting frame and a vibration frame which is held against said supporting frame so as to be able to vibrate freely. A simple, compact design which provides good sieving and conveying performance is achieved in that the vibration frame is spring-elastically coupled to the supporting frame by torsion-bar-like spring elements.

Abstract: A screen support for supporting screening material of a screen assembly for use on a shale shaker for separating components of material introduced thereto, the screen support having a body, a plurality of spaced apart holes through the body, each of said holes for receiving part of a fastener used for releasably connecting the screen assembly to a shale shaker; the screen support in certain aspects being a frame, a perforated plate, a strip support or a unibody structure; a screen assembly with such a support; such a screen assembly, in certain aspects, with a plastic grid or layer with corresponding fastener holes; a shale shaker with any such screen assembly; and methods of their use.

Abstract: A clamp system for releasably securing a screen to a vibratory separator apparatus, and methods of its use, and a plate for such a system, the clamp system having, in certain aspects, a plate for contacting a screen end of a screen to be mounted to a vibratory separator apparatus, the plate having a plate linear dimension and the screen end having a screen linear dimension, the plate having a plate body, a bolt with a first end extendable through the plate and a second end extendable through part of the vibratory separator apparatus, the bolt tightenable in place to hold the plate in position with respect to the screen and the vibratory separator apparatus, and the plate linear dimension substantially equal to the screen end linear dimension.

Abstract: A parts collection system for injection molding machines is disclosed. The system provides for easy and quick changing of devices adapted for receiving molded parts discharged from the molding machine. Generally, the parts collection system of the present invention includes a pair of support tracks for mounting to the frame of the molding machine having a pair of mold member operably connected thereto. Adjustably mounted to the support tracks are a pair of retaining beams for suspending devices adapted to receive parts dropped from the mold members.

Abstract: The invention pertains to a sieve bed for a sifting machine, consisting of rectangular sieve elements (10), which are attached to a support frame (1) with their edges abutting each other, the support frame being provided with mushroom-shaped mounting pins (3), each of which is provided with a head which engages in an interlocking manner in corresponding recesses (11a and 11b) of the sieve elements (10). To facilitate the assembly and disassembly of the sieve elements in a sieve bed of this type and to protect the connection from premature wear the invention proposes that the receptacle (11) for the head (4) of the mounting pin (3) be closed off at the top; that the receptacle (11) for the head (4) of the mounting pin (3) be provided at the bottom with an entrance opening for the head (4) of the mounting pin (3); and that the wall of the receptacle (11) be provided with an inward-projecting bed (12), which can be snapped under the head (4) of the mounting pin (3).

Abstract: A vibratory screening machine having a single vibratory motor mounted on its inner resiliently mounted frame by motor mounting structures at its ends, each motor mounting structure consisting of a combination of a fist bracket carrying a directionally stiff bushing with the fist bracket being mounted in a motor mount bracket with the fist bracket having a first cutaway portion positioned within a second cutaway portion in a rib on the base of the motor mount bracket. The directional stiffness of each bushing is aligned with the center of rotation of the vibratory motor, and this will produce linear motion when the unbalance of the vibratory motor is in line with the center of rotation of the motor and the direction of the directional stiffness of the bushings.

Abstract: A screen assembly for a vibratory separator, the screen assembly having a first screen portion having a first end and a second end spaced apart from the first end, and a second screen portion formed integrally of or connected to the second end of the second screen portion. A screen assembly with a first portion of screening material and a second raised portion of screening material, the second raised portion extending from a material introduction end of the screen assembly to a material exit end thereof, the raised portion, in one aspect, culminating in an apex above the first portion of screening material.

Abstract: A tool designed for separating manure, loose hay and wet bedding from the stall of an animal. The tool comprises a rectangular frame supporting a plurality of spaced parallel rods. The rods extend downwardly at an angle from a wall of the stall such that the lower ends of the rods or the portion of the grate supporting the rods extend into a receiver such as a muck bucket or wheel barrow. When refuse is tossed from a floor of the stall onto the grate, then manure, loose hay and soiled or wet bedding will flow down the grate into the receiver, while reusable bedding will pass through the spaces between the rods for later reuse. The frame is provided with side members which converge at their lower ends to funnel refuse into the container.

Abstract: A support for a screen assembly for a vibratory separator, a screen assembly with such a support, a vibratory separator with one or more such screen assemblies, and a method of using such a screen assembly, such a support having a body, a first series of holes through the body each hole having a first opening size as viewed from above, a second series of holes through the body each hole with a second opening size as viewed from above, the second series of holes at a selected area of the body and the support positionable in a vibratory separator so that the selected area is adjacent a selected location with respect to the vibratory separator, and the second opening size smaller than the first opening size and/or the second series of holes with holes spaced apart differently than the holes of the first series of holes; and in one aspect, a plastic grid with such hole series for fusing together layers of screening material.

Abstract: A shale shaker system for separating components of drilling fluid with solids entrained therein, the shale shaker system, in at least certain aspects, including a base, a screen mounting basket on the base, vibrating apparatus connected to the screen mounting basket for vibrating the screen mounting basket, the screen mounting basket having mounting structure for at least one screen assembly mounted on the mounting structure, the mounting structure having a body over which the at least one screen assembly is positionable, some components of the drilling fluid to be treated by the shale shaker flowable through the at least one screen assembly and through the body, at least one wear strip attached to the mounting structure, the at least one wear strip having a wear strip body, at least one upwardly projecting member projecting upwardly from the wear strip body, the at least one screen assembly including a screen support with screening material and at least one hole in the support sized, configured, and located

Abstract: A screen support for supporting screening material of a screen assembly for use on a shale shaker for separating components of material introduced thereto, the screen support having a body, a plurality of spaced apart holes through the body, each of said holes for receiving part of a fastener used for releasably connecting the screen assembly to a shale shaker; the screen support in certain aspects being a frame, a perforated plate, a strip support or a unibody structure; a screen assembly with such a support; such a screen assembly, in certain aspects, with a plastic grid or layer with corresponding fastener holes; a shale shaker with any such screen assembly; and methods of their use.

Abstract: A sieving device having a mesh screen detachable from a frame body is capable of easily removing particulate material remained on the mesh screen and cleaning of the mesh screen and being installed even in a confined space requiring a sanitary condition. The particulate material sieved through the mesh screen is prevented from getting out of a collecting container or scattering around. With a vibration generating means in the sieving device, sieving vibration can be efficiently produced with a relatively small power with preventing coagulation and agglomeration of the particulate material. By corrugating the bottom of the mesh screen, the efficiency of sieving the particulate material can be increased remarkably.

Abstract: A clamp system for releasably securing a screen to a vibratory separator apparatus, and methods of its use, and a plate for such a system, the clamp system having, in certain aspects, a plate for contacting a screen end of a screen to be mounted to a vibratory separator apparatus, the plate having a plate linear dimension and the screen end having a screen linear dimension, the plate having a plate body, a bolt with a first end extendable through the plate and a second end extendable through part of the vibratory separator apparatus, the bolt tightenable in place to hold the plate in position with respect to the screen and the vibratory separator apparatus, and the plate linear dimension substantially equal to the screen end linear dimension.

Abstract: An integrated gasket and screen frame for a screen assembly for use with a vibrating shaker. The screen assembly includes a tubular frame having a top side and an under side. At least one screen cloth is affixed to the top side of the frame. A slot in the tubular frame has a width. An elastomeric gasket has at least a portion wider than the width of the slot so that the gasket may be press fit and mechanically locked into the slot and held therein.

Abstract: A screen system employs a resiliently mounted housing, a vibration generator mounted to the housing, a mounting frame fixed to the resiliently mounted housing and a support surface. This system receives a screen including a screen frame and pre-tensioned screen cloth. The frame includes an inwardly extending mounting flange accessible from below the screen when placed in the housing. Clips pivotally mounted relative to the mounting frame include a first rounded lever extending upwardly to selectively engage the inwardly extending mounting flange. Second levers extend downwardly to cooperate with actuators. The actuators include inflatable bodies with contacts which, upon inflation, force the clips to engage the inwardly extending mounting flanges. This engagement retains the screen on a resiliently mounted housing and is able to further tension the screen in place.

Abstract: A screening module for a screening assembly includes a substantially rectangular, planar screening member having a plurality of screening apertures extending through it the member having a pair of sides extending parallel to a direction of flow of material over the member and a pair of sides extending transverse to a direction of flow of material over the member. A mounting means is formed integrally with the screening member as a one-piece unit for securing the member to an underlying structure. A part of the mounting means is arranged along each side of the screening member and only the parts of the mounting means associated with one pair of sides having reinforcing with the parts of the mounting means associated with the other pair of sides being without reinforcing.

Abstract: A shale shaker for separating material, said shale shaker comprising a basket (100) for supporting a screen assembly and a collection receptacle, the basket comprising two side walls (102), an end wall (103) and an opening in the bottom of said basket (100), said basket (100) having means (109,110) to support screen assemblies for substantially covering said opening characterised in that said basket (100) further comprises separating means (104,105,106)in or on any of said walls (102,103) for separating material. Preferably, further comprising directing means for directing separated material therefrom into said collection receptacle. The invention also provides a method for separating material using the shale shaker of the invention, a basket of the shale shaker of the invention and screen assemblies used in the shale shaker of the invention.

Abstract: A screen is described wherein one end of the screen frame is provided with an upwardly open channel profile and the other end with a similar but downwardly open channel profile, such that the outboard edge of an upwardly open profile will fit within the channel of a downwardly open profile provided along the edge of an adjoining screen frame, to enable two such screens to be connected together and to enable linear movement in a direction generally perpendicular to the line of engagement and generally in the plane of at least one of the two screens, to be transmitted from one screen frame to the other. The engagement of one profile by another also serves to close the gap between the two screen frames and prevent at least particulate material from passing therebetween. Preferably the engagement prevents liquid from passing therebetween.

Abstract: A unibody structure for a screen assembly for a vibratory separator, the unibody structure, in certain aspects having an integral body member with a portion having a plurality of spaced-apart openings in a pattern of a plurality of spaced-apart screening openings and including a pair of spaced-apart integral side members made of folded portions that form the pair of spaced-apart integral side members, a pair of spaced-apart integral end members made of folded end portions, the pair of spaced-apart integral end members each with a first end member and a second end member, the first end member configured with a shoulder support portion for sealingly abutting a screen ledge end of an adjacent screen, and the second end member configured with a ledge portion for sealingly abutting a shoulder portion of an end of an adjacent screen, and the plurality of spaced-apart openings of the integral body member defined by a plurality of spaced-apart strips, each adjacent pair of the plurality of spaced-apart strips definin

Abstract: A screening panel 10 comprises a peripheral frame 12 consisting of a pair of mutually laterally spaced side members 14, 16, which are integral with a pair of mutually axially spaced end members 18, 20. The side members 14, 16 and end members 18, 20 define corners of the panel 22.1, 22.2, 22.3 and 22.4 and the peripheral frame 12 where they meet. A plurality of mutually spaced ribs 15 extend across the periphery of the panel 10 to define a screening surface. The side members and end members are rectangular in cross-section, thereby defining substantially flat upper peripheral surfaces 12.1, outer peripheral surface 12.2 and lower peripheral surface 12.3 of the peripheral frame 12 and thus also the panel 10. The panel 10 includes locating recesses 24 provided at or near to the corners 22.1, 22.2, 22.3 and 22.4 of the panel 10. The panel 10 also has separate securing recesses in the form of semi-circular grooves 30 formed in the lower surface 12.

Abstract: An integrated gasket and screen frame for a screen assembly for use with a vibrating shaker. The screen assembly includes a tubular frame having a top side and an under side. At least one screen cloth is affixed to the top side of the frame. A slot in the tubular frame has a width. An elastomeric gasket has at least a portion wider than the width of the slot so that the gasket may be press fit and mechanically locked into the slot and held therein.

Abstract: An embodiment of the present invention, accordingly, is directed to a tensioning device for tensioning a screen relative to a wall of a separator in a manner so that the proper tension can be applied to the screen in a relatively quick manner and yet the screen can be easily removed and a new one installed.

Abstract: A screen system employs a resiliently mounted housing, a vibration generator mounted to the housing, a mounting frame fixed to the resiliently mounted housing and a support surface. This system receives a screen including a screen frame and pre-tensioned screen cloth. The frame includes an inwardly extending mounting flange accessible from below the screen when placed in the housing. Clips pivotally mounted relative to the mounting frame include a first rounded lever extending upwardly to selectively engage the inwardly extending mounting flange. Second levers extend downwardly to cooperate with actuators. The actuators include inflatable bodies with contacts which, upon inflation, force the clips to engage the inwardly extending mounting flanges. This engagement retains the screen on a resiliently mounted housing and is able to further tension the screen in place.

Abstract: There is provided screen apparatus comprising side walls having a lower edge portion configured to accept tubular screen support members. An upper edge extends from the inlet end of the side walls to an apex from which a declining edge extends to the foot of the side walls. The lower edge, upper edge and declining edge are each provided with edge stiffening. A torque tube is secured between the respective exciter mount castings, the torque tube and stiffened side wall being selected to provide that the first fundamental frequency mode greater than the exciter frequency is at least 2 Hz greater than the exciter frequency and the first fundamental frequency below the exciter frequency is at least 2 Hz lower than the exciter frequency.

Abstract: A method and apparatus for separating material, particularly excavated material is presented. The method and apparatus utilize a releasable and interchangeable screen assembly which is positioned on top of a frame having a slanted grate. The screen assembly includes bar members which traverse the top of the screen and inverted hook members attached to a top surface of the bar members to enable an equipment bucket to engage the inverted hook members in order to lift and move the screen assembly.

Abstract: An embodiment of the present invention, accordingly, is directed to a tensioning device for tensioning a screen relative to a wall of a separator in a manner so that the proper tension can be applied to the screen in a relatively quick manner and yet the screen can be easily removed and a new one installed.

Abstract: A particle screening system is a modular industrial screen system having a number of screen panel modules supported side-by-side and/or end-to-end by a supporting structure assembly. The supporting structure assembly has a number of support bars arranged to support peripheral portions of each screen panel module by way of rail members. The rail members have protrusions which are designed to meet with recesses in the screen panel modules using a snap-engagement.