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| Number | Title | Issue Date |
| 7434695 | De-inking screen Multiple shafts are aligned along a frame and configured to rotate in a direction causing paper products to move along a separation screen. The shafts are configured with a shape and spacing so that substantially rigid pieces of the paper products move along the scr... | 10/14/2008 |
| 7310896 | Mechanized unit for protectively encasing a utility in a trench with processed excavated trench material A mechanized unit that is moved through a trench in the ground for the purpose of placing a length or lengths of a utility or utilities by a guide device on the bottom of the trench, and then encasing the placed utility or utilities. The unit has at least one plow t... | 12/25/2007 |
| 7261209 | Multi-disc module and method of application A modular multi-disc assembly for use in material separation screens and a method of application to those screens are provided. The modular multi-disc assembly includes an inner securing hub that clamps onto the drive shaft of a material separation screen. The modul... | 08/28/2007 |
| 7117996 | Adjustable object size grader An adjustable apparatus for sizing objects, mainly delicate foods, by the rotation of a set of at least 7 rollers, each roller having one less tooth so that the rollers move at progressively higher revolutions per minute, from the in-feed shear roller of 144 revolut... | 10/10/2006 |
| 7000779 | Separation device Device for separating fine fractions and coarse fractions from bulk goods, comprising a frame and a screen plane supported by it for supporting the coarse fraction and allowing the fine fraction to pass through, the screen plane being formed by a number of screen di... | 02/21/2006 |
| 6848583 | Drilling fluid treatment A shale shaker having a basket for holding screen assembly apparatus, screen assembly apparatus for treating fluid introduced to the shale shaker, a roller bed assembly secured above and/or to the basket above the screen assembly apparatus, the roller bed assembly h... | 02/01/2005 |
| 6834764 | Roller screen and method for sorting materials by size A screen roller is provided, configured to rotate as one of a plurality of rollers in a roller screen. The roller may include left hand spiral grooves formed in a first region of the surface of the roller, extending from one end of the roller toward the center, and ... | 12/28/2004 |
| 6811035 | Device for sorting flat-area piece goods A device for sorting flat-area piece goods, particularly packets, packages, and letters. This device has a drum cylinder open towards the outside at both faces, and mounted at an angle to rotate on a bearing body on the mantle surface of the cylinder. The cylinder i... | 11/02/2004 |
| 6780002 | Spreader for wood chips, wood particle and sawdust At the end of an array of rollers of a spreading head for wood particles for the production of mats to form particleboard, rollers of the array are driven at a higher speed than the rollers of the fine-particle spreading portion and baffles are provided below the hi... | 08/24/2004 |
| 6726028 | De-inking screen Multiple shafts are aligned along a frame and configured to rotate in a direction causing paper products to move along a separation screen. The shafts are configured with a shape and spacing so that substantially rigid pieces of the paper products move along the scr... | 04/27/2004 |
| 6679387 | Roll apparatus for spreading wood chips Roll set for handling, particularly screening and spreading, different materials such as wood chips and shavings, the roll set including at least two parallel-mounted, rotatable rolls, whereby the interroll gaps are adapted to pass the material being hand... | 01/20/2004 |
| 6612446 | Roll for spreading and slowing down pourable materials A spreading roll for spreading out a chip fleece for producing wood chip material or similar panels, includes two disk-shaped end pieces (3, 7), plural thin spokes (6), rods, pipes or cords arranged extending between the end pieces, and pipe-shaped loose ... | 09/02/2003 |
| 6419093 | Vegetable harvester The harvester has a harvesting head, a shredder, cleaning and separating assemblies including a roller bed, a fruit sizer and a fruit discharge. The roller bed includes a plurality of parallel rollers journaled on a roller bed frame. The roller bed frame ... | 07/16/2002 |
| 6257414 | Roller sifting and dispersing machine A roller sifting or dispersing machine for the classification or dispersing of wood chips, fibers, or similar materials and to the utilization of an above-described roller sifting or dispersing machine. The roller sifting machine includes annular grooves ... | 07/10/2001 |
| 6253927 | Roller screen The invention relates to a roller screen for screening pellets for sintering, the roller screen including several successive rotating rollers that are spaced apart and arranged transversally in relation to the proceeding direction of the material. The rol... | 07/03/2001 |
| 6237778 | Agricultural separating device and agricultural separator An agricultural separating device has a starshaft (7) comprising a row of resilient starwheels (2) mounted on a rotatable shaft. Rings (5) formed of a rigid material (e.g. nylon or polypropylenes), and having an outer diameter such that they extend radial... | 05/29/2001 |
| 6196394 | Method for operating a roller bar screen The invention relates to a method for operating a roller bar screen and to the generation of certain parameters for optimal adaptation to the bulk material being processed and as a prerequisite for process optimization. Construction measures--essentially ... | 03/06/2001 |
| 6053330 | Adjustable roller screen A roller screen is provided with an assembly for adjusting the spacing between the rolls simultaneously. The assembly includes an elongated bar is provided adjacent one end of the rolls and has a plurality of wedges slidably mounted thereon. Bearing suppo... | 04/25/2000 |
| 5960964 | Method and apparatus for sorting recycled material A compound disc is used to eliminate a secondary slot normally formed between adjacent shafts of a material separation screen. The compound disc comprises a primary disc joined to an associated secondary disc. The primary disc and the secondary disc each ... | 10/05/1999 |
| 5890600 | Method and apparatus for removing impurities from pulverized or chipped material, especially wood chip and fiber materials The invention relates to a method and apparatus for screening pulverized or chip material, such as fibers or wood chips, free from impurities. The material to be screened is fed onto a roll set formed by a number of adjacent, essentially parallel rolls (1... | 04/06/1999 |
| 5824356 | Method and apparatus for cleaning roots, tubers, bulbs, and the like There is disclosed method and apparatus for cleaning roots, tubers, bulbs, and the like, for example, sugar beets, chicory, Jerusalem artichokes, dahlia, potato, and onions (hereinafter "articles"). In the apparatus, spaced horizontal rollers have helices... | 10/20/1998 |
| 5699919 | Method and apparatus for removing bark balls from a log flow The invention relates to a method and apparatus for removing bark balls from a log flow traveling on a conveyor (3) which extends from a debarking drum (1) to a chipper (2), said conveyor (3) including a roller assembly (4) provided with an opening (5) fo... | 12/23/1997 |
| 5590793 | Roll screen with variable aperture The invention relates to a roll screen having variable screening apertures having axle-fitted rolls which are spaced at adjustable distances apart and a device for adjusting this spacing. The roll spacing adjusting device functions to act on all rolls sim... | 01/07/1997 |
| 5503712 | Screening system for fractionating and sizing woodchips A flow management system and process for providing controlled separation and sizing of an incoming flow of wood chips. A flow management screen is provided in the form of a horizontal disk screen having a variable speed drive, with the drive controlled ba... | 04/02/1996 |
| 5386914 | Apparatus for scattering fibrous material, e.g. chips An apparatus for scattering fibrous material, e.g., chips or the like, to form a precisely controlled blanket of chips, together with a binder, onto a scattering band conveyor or a mold, includes a scattering chamber including a dosing conveyor for transf... | 02/07/1995 |
| 5377848 | Roller screen for screening bulk material, especially wood chips The invention relates to an apparatus for separating finer and coarser material fractions of bulk material from each other, especially for separating sawdust from wood chips, the apparatus comprising a plurality of successive rollers (2) rotating about pa... | 01/03/1995 |
| 5373947 | Separator for removing foreign materials in granulated materials A separator of the invention is designed to remove foreign materials, such as small stones, included in granulated materials, such as red beans, having smooth outer surfaces. The separator is formed of a supplying section, and a separating section for rec... | 12/20/1994 |
| 5360119 | Separator for removing foreign materials in granulated materials A separator of the invention is designed to remove foreign materials, such as small stones, included in granulated materials, such as red beans, having smooth outer surfaces. The separator is formed of a supplying section, and a separating section for rec... | 11/01/1994 |
| 5298119 | Screening system for fractionating and sizing wood chips A flow management system and process for providing controlled separation and sizing of an incoming flow of wood chips. A flow management screen is provided in the form of a horizontal disk screen having a variable speed drive, with the drive controlled ba... | 03/29/1994 |
| 5287977 | Roller system for use in a roller screen The roller screen arrangement includes a plurality of roller systems and a motor for driving the rollers of the roller system. Each roller system includes a drive shaft drivable by the motor driver and a roller associated with the drive shaft. One end of ... | 02/22/1994 |
| 5279427 | Rotary feed table for food product and sliver remover A roller bed for separating fines and slivers from sliced food product such as french fries includes a plurality of rollers placed side-by-side on parallel roller shafts and are shaped to provide alternating crown and flat portions about the periphery of ... | 01/18/1994 |
| 5232097 | Screening method and apparatus The present invention concerns a screening method and apparatus for sorting wood chips into three categories, namely, accept chips, overthick and/or overlong chips requiring further processing and reject fines. The chips are fed onto a disc screen. A majo... | 08/03/1993 |
| 5167328 | Rotary micrometer A classifying machine for sizing articles, separating the articles so sized and delivering those within given size limits to particular bins having a pair of juxtapositioned rollers raised at their feed ends so that they move in part under the force of gr... | 12/01/1992 |
| 5109988 | Machine and method for sorting out fines, pins, and over-thick wood chips Fines, pins, and over-thick wood chips are separated from wood chip material by using a series of three roller screens having chip agitating and conveying protuberances. The screens are arranged and adapted such that over-thick chips are separated by the ... | 05/05/1992 |
| 5078274 | Method and apparatus for wood chip sizing A system and process for sizing wood chips to provide a flow of wood chips which are acceptable for feeding to a digester of a pulping system. A flow management screen station is provided which divides an incoming unacceptable flow into two fractional flo... | 01/07/1992 |
| 5066507 | Method for removing roots from cormatose plant bodies A method for mechanically removing roots from harvested cormatose plant bodies using a special root removing arrangement comprises supplying the harvested cormatose plant body (3) in between two parallel spaced horizontal rollers (1,2) while they are rota... | 11/19/1991 |
| 5058751 | Machine for sorting out over-thick wood chips Wood chips having an acceptable thickness pass between the rollers of a roller screen for collection and over-thick chips discharge from one end of the roller screen for recycling. The rollers have chip agitating protuberances, preferably of pyramidal sha... | 10/22/1991 |
| 5012933 | Machine and method for sorting out over-thick wood chips Wood chips having an acceptable thickness pass between the rollers of a roller screen for collection and over-thick chips discharge from one end of the roller screen for recycling. The rollers have chip agitating protuberances, preferably of pyramidal sha... | 05/07/1991 |
| 5011025 | Feeder for seed cleaner A feeding mechanism adpated to feed seeds such as soybeans, navy or pinto beans into a cleaning device. The feeder includes a hopper which is supplied by a hose from a large bin, and which, in turn, feeds a spout emptying into an adjustable chute which fo... | 04/30/1991 |
| 4979624 | Sizing apparatus and proportional spacing mechanism A roller conveyor bed is formed by a plurality of driven conveyor spools or rollers rotating in the same direction for conveying and sorting objects. The conveyor rollers define a substantially common conveyor plane along the upper surfaces of the conveyo... | 12/25/1990 |
