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| Number | Title | Issue Date |
| 7980392 | Shale shaker screens with aligned wires 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 seco... | 07/19/2011 |
| 7757865 | Angle rod screen design 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 distri... | 07/20/2010 |
| 7637378 | Screening deck for fractionating crushed stone 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 scr... | 12/29/2009 |
| 7438191 | Angle rod screen design 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 distri... | 10/21/2008 |
| 7303079 | Screening element The invention provides a screen which has a screen body (12) and a plurality of ribs which extend across the screen body. Screening apertures (118) are defined in the screen body by the ribs. A reinforcing frame (124) is embedded in the screen b... | 12/04/2007 |
| 7264125 | Undulating molded plastic vibratory screen An undulating molded plastic vibratory screen including a base, a plurality of spaced substantially parallel undulations on the base, screen configurations on the undulations, and supporting rib structure within the undulations. ... | 09/04/2007 |
| 7228971 | Vibratory screening machine and vibratory screen and screen tensioning structure 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 ... | 06/12/2007 |
| 7216767 | Screen basket and shale shakers A screen mounting basket for a vibratory separator for separating components of material introduced into the basket, the vibratory separator including a collection receptacle beneath the basket, the basket including two opposed spaced-apart side walls having first e... | 05/15/2007 |
| 7198156 | Dam basket for vibratory separators A vibratory separator and a screen mounting basket for a vibratory separator for separating components of material introduced into the basket, the vibratory separator including a collection receptacle beneath the basket, at least one screen assembly mounted in the b... | 04/03/2007 |
| 7182207 | System and process for break detection in porous elements for screening or filtering A detector for breaks in screens and filters employed in material separators includes a transmitter of RF signals and a receiver of RF signals located to either side of a screen. The separator includes a chamber having a barrier to RF signals with a path through the... | 02/27/2007 |
| 7108233 | Wire ring net for rocky wall barriers and method for making it A wire ring net, particularly for providing barriers for rocky walls and the like comprises a plurality of braided wire rings, each wire ring comprising, at a starting end of its wire, a first curled portion wound about the wire of the first turn and, at the termina... | 09/19/2006 |
| 7079998 | Method for analyzing power noise and method for reducing the same A method for analyzing power noise and method for reducing the same are disclosed, wherein the present invention is utilized in an IC design process. First, a DC analysis is performed with a related IC design by utilizing computer aided design (CAD) software and cir... | 07/18/2006 |
| 6997325 | System and process for break detection in porous elements for screening or filtering A detector for breaks in screens and filters employed in material separators includes a transmitter of RF signals and a receiver of RF signals located to either side of a screen. The separator includes a chamber having a barrier to RF signals with a path through the... | 02/14/2006 |
| 6932883 | Screens for vibratory separators A method for making a screen assembly for a vibratory separator, the method including, in at least certain aspects, gluing together with glue at least two layers of fine screening material, allowing the glue to set, preheating the glued together at least two layers ... | 08/23/2005 |
| 6755307 | Separating device comprising a screen lining A device for separating undesirable oblong and/or curved pieces of scrap from a scrap flow or scrap pile with a higher density, such as chill scrap, by means of an oscillating or shaking screen (1) includes a screen base (2) with a plurality of parallel guide bars (... | 06/29/2004 |
| 6401934 | Ramped screen & vibratory separator system A screen assembly has been invented which has a base, at least one layer of screening material on the base, and at least one ramp formed in the at least one layer of screening material.... | 06/11/2002 |
| 6257413 | Screen panel Screen panels are disclosed which are adapted to form a portion of a screening cylinder for screening fibrous material. The screen panels are unitary and made of wear-resistant material including a plurality of axially extending grooves on the outer surfa... | 07/10/2001 |
| 6220449 | Flat top cloth support screen A screen for a vibratory shaker for treating material flowing thereto, the screen in certain aspects having a lower support made of criss-crossed wires which define a plurality of spaced-apart holes through the lower support, the wires having top surfaces... | 04/24/2001 |
| 6220448 | Screen assembly for vibratory screening machine A screen assembly for a vibratory screening machine including a plurality of superimposed screens, channels on the edges of the screen assembly, and a plurality of hollow plastic channeling strips fused into the plurality of superimposed screens. The holl... | 04/24/2001 |
| 6209726 | Screen assembly for vibratory screening machine A screen assembly for a conventional vibratory screening machine includes an upper fine mesh screen which passes particles below a predetermined size and rejects particles above this size. A second or blinding screen, below the first screen, acts to dislo... | 04/03/2001 |
| 6186337 | Dual screen element having upper scalping screen adhered to crests of corrugated lower screen A new screen has been invented for use with vibratory screening apparatuses which has, in certain aspects, a base, a first screen on the base, and a scalping screen on the first screen, the first screen assembly including a corrugated screen having altern... | 02/13/2001 |
| 6161700 | Vibratory screening screen and method of fabrication thereof A screening screen having openings in the warp direction which are longer than these openings in the woof direction including warp wires and woof wires of the same maximum size extending at substantially maximum warp and woof crimp angles relative to each... | 12/19/2000 |
| 6041943 | Adjustable grating pain rock sifter A sorting apparatus includes a first grating of spaced parallel bars and a second grating of spaced parallel bars positioned parallel to the first grating. Relative lateral movement of the first grating and the second grating alters the lateral spacing be... | 03/28/2000 |
| 6029824 | Screen for vibrating separator A substantially planar screen for a solid particle separator is formed from one or more layers of mesh. The one or more layers of mesh are formed into a series of ridges separated by channels within the plane of the screen. The wire mesh is bonded to a ri... | 02/29/2000 |
| 6006922 | Spacer for bar screen A doughnut or puck-shaped spacer has a centrally positioned square hole. A pie-shaped cutaway portion of the spacer allows the spacer to be elastically deformed mounting on a square rod. The rod and spacers join together the bars of a bar screen rack. Bar... | 12/28/1999 |
| 5673797 | Screen assembly for vibratory screening machine and method of fabrication thereof A screen assembly for a vibratory screening machine including a plate having openings therein, a plurality of screens firmly bonded to the plate, channels on the edges of the plate, and a plurality of hollow plastic channeling strips fused into the plural... | 10/07/1997 |
| 5411150 | Culling device for vacuum cleaners and other equipment Culling device for vacuum cleaners and other equipment which is made either as uni-functional (1) or two-functional (16), a part of which enclosure (6) is most frequently made of transparent materials, the device itself being made as tube, handle, part of... | 05/02/1995 |
| 5330057 | Screen and screen cloth for vibratory machine and method of manufacture thereof A screen assembly for a vibratory screening machine including a frame, and a screen cloth on the frame having wires with a diameter D of between about 1.6×103 micrometers and 17.8 micrometers with a peak to valley roughness R in micrometers wh... | 07/19/1994 |
| 5257699 | Disc screen construction A die stamp formed disc construction including a toothed plate and a two-stepped sleeve integrally formed thereon. The sleeve has coined or stamped interior and exterior forty-five degree flats. The flats are accurately positioned so that, with the discs ... | 11/02/1993 |
| 5102536 | Self-cleaning water filter screen apparatus An apparatus is described which separates small solids from process waste water. A continuously rotating elongated drum screen having a large diameter interior flow channel removes the solids. The drum screen contains a continuous loop of closely spaced l... | 04/07/1992 |
| 5011026 | Solid waste disposal screening apparatus A screen or grid adapted to be placed in close proximity to the receiving end of a trash receptacle housed within an enclosure which permits smaller dimensioned trash to pass through openings in the screen or grid but will prevent larger dimensioned reusa... | 04/30/1991 |
| 4904378 | Flat element for filtering and separation A flat element for filtering various substances and separating particles wherein a wire is planarly wound in the form of a vortex to form a vortical slit between the adjoining peripheral margins of the wire thereby increasing the area for filtering or sep... | 02/27/1990 |
| 4879024 | Elastomeric element for forming surfaces engageable with loose abrasive materials, and a sizing screen made from such elements An elastomeric element for forming surfaces engageable with loose abrasive materials comprising a base having a working surface in the form of a surface of revolution. In a section taken perpendicularly to the axis of the surface of revolution the base is... | 11/07/1989 |
| 4857176 | Reinforced molded polyurethane vibratory screen 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, a plurality of major and minor substantially parallel ribs extending between the upper and low... | 08/15/1989 |
| 4819809 | Reinforced polyurethane vibratory screen 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, a plurality of major and minor substantially parallel ribs extending between the upper and low... | 04/11/1989 |
| 4812231 | Self cleaning rotating fine polishing filter screen apparatus An apparatus is described which separates small solids from process waste water. A continuously rotating elongated drum screen in a three foot diameter flow channel removes the solids. The solids are deposited by spray wash into a dewatering chamber. The ... | 03/14/1989 |
| 4561972 | Combine sieve plate A grain harvesting combine is provided with an improved sieve plate for more efficient cleaning of the grain. The sieve plate is mounted on the combine adjacent the rearward end thereof and is substantially rectangular in shape. The sieve plate has forwar... | 12/31/1985 |
| 4374169 | Abrasion resistant, reinforced screen panel member Screen member for use in fixed or rotating screen support devices and in either a vibrating or non-vibrating mode for grading or dewatering comprises a first plurality of elongated, parallel surface wire members which are formed by extruding a resilient, ... | 02/15/1983 |
| 4298464 | Rock separator A device for primary separation of valuable ore material from gravel or other waste in placer mining prior to sluicing. The separator comprises a frame having sides and front and back ends and adapted to be inclined at an angle to the horizontal during op... | 11/03/1981 |
| 4247007 | Strands and netting and screens made thereof A net or screen formed of crossing strands of an abrasion-resisting organic element and a sieve constructed with such netting or screening. The strands may be either cored or coreless. Where a core is provided it may consist of some type of metallic wire,... | 01/27/1981 |
