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| Number | Title | Issue Date |
| 6830207 | Screen cleaning and comminuting system A comminuting apparatus including a filtering screen member for collecting solids carried by an effluent stream. The filtering screen member has an upstream side and a downstream side. The comminutor apparatus further includes a twin shaft grinder for grinding solid... | 12/14/2004 |
| 6719145 | Arrangement and rotor for screening of pulp An arrangement and a rotor for screening of pulp is disclosed that is suitable for the screening of chemical and mechanical pulps, i.e. fiber suspensions of the wood processing industry. A feature of the arrangement and rotor is that inside the rotor (16) the... | 04/13/2004 |
| 6669025 | Screen A screen for cleaning a pulp suspension including an additional screen basket in the infeed area for pre-screening.... | 12/30/2003 |
| 6364119 | Screening device and apparatus including same A screening device including a screen having a first side for presentation to material to be screened and a second side, a plurality of screen openings in the screen extending between the first and second side thereof, a plurality of tines mounted on a su... | 04/02/2002 |
| 6325215 | Method and apparatus for separating elastomeric particulates and fibers from a pulverized mixture A method and apparatus for separating elastomeric particulates from a pulverized mixture wherein a first separator assembly separates out substantially clean fiber and passes non-fibrous particulates and residual fiber to a second separator assembly that ... | 12/04/2001 |
| 6305552 | Apparatus for removing matter from tobacco stems An apparatus for separating tobacco stem particles from a mixture containing such particles and tobacco stalk particles obtained in a threshing and separating process employed in a tobacco stemmery includes a hollow drum having a longitudinal axis, the ho... | 10/23/2001 |
| 6253928 | Grain grader In a preferred embodiment of the invention, a grain grader has an improved cleaning system utilizing cascades of rollers swingably engaged with a grading cylinder. In a preferred embodiment, a multiple axle roller assembly for dislodging clogged grain in ... | 07/03/2001 |
| 6193073 | Paper stock screening apparatus and method Pressure screening apparatus for screening a suspension of paper fiber stock employs a rotor in which a single impulse or foil member is carried or positioned to move along a discrete portion of the screen surface. This arrangement improves efficiency of ... | 02/27/2001 |
| 6126016 | Screening device and apparatus including same A screening device including a screen includes a first side for presentation to a body of material to be screened and a second side. A plurality of elongate screen openings are formed in the screen extending between the first and second sides thereof. A p... | 10/03/2000 |
| 6050422 | Rotary sweep scalper A rotary sweep scalper for cleaning grains deposited within a hopper. Grains to be processed are deposited through an upper inlet opening in the hopper and fall unto a screen located below. Those grains below a predetermined size pass through the screen t... | 04/18/2000 |
| 5967335 | Screening device for screening a suspension Arrangement for separating off undesired particles from a suspension stream. The arrangement has a closed housing with an inlet for the suspension from which particles are to be separated off, an outlet for the treated suspension and an outlet for undesir... | 10/19/1999 |
| 5915567 | Screen accessory for screen and screening process The sieve efficiency can be increased in an improved sieve apparatus in such a way tat the sieve apparatus is equipped with a compulsory mixing device (5). By means of this, during the sieve process, the sieve product, which is moving forward along the ma... | 06/29/1999 |
| 5605233 | Trommel cleaner A trommel cleaner apparatus having a non-circular rotatable shaft with a plurality of flapper elements mounted thereto for wiping and cleaning engagement with a trommel is provided herein. The flapper elements each have a hub having inner and outer surfac... | 02/25/1997 |
| 5601192 | Pressure sorter for fiber suspensions Pressure sorter for the preparation of fiber suspensions obtained from waste paper, with a screen surrounding a rotor, a supply chamber between rotor circumference and screen as well an accepts chamber outside the screen and with profiled elements provide... | 02/11/1997 |
| 5593042 | Quality-control sieve and method of using it The novel invention proposes a final screen which is very reliable in operation and which is suitable more particularly also for building into a pneumatic conveying line. In a first section the material is distributed uniformly over the entire peripheral ... | 01/14/1997 |
| 5509536 | Method and apparatus for the sorting of fiber suspensions In a sorting method for fiber suspensions, a dividing wall (3, 3') is used comprising openings via which the compenent particles in the suspension S to be sorted are classified according to their size. The beneficial transporting away of the rejected comp... | 04/23/1996 |
| 5458246 | Horizontal cylindrical sifter with adjustable agitator arms A horizontal cylindrical sifter is provided, including a housing with an inlet for feed material of mixed size at a first end, an outlet for coarse material at a second end, a cylindrical screen for sifting the mixed feed material to separate the coarse m... | 10/17/1995 |
| 5310065 | Self-cleaning coal bypass and debris separation grid assembly with rotary clearing mechanism A self-cleaning coal bypass and debris separation grid assembly has a sizing/segregating grid for particulate material such as coal, and a debris bypass grid downstream to bypass the coal to a coal crusher and separate any debris which might damage the cr... | 05/10/1994 |
| 5238117 | Mineral processing screen separator This invention relates to a screen separator for separating metal adsorbent particles from a pulp and includes a screen separator for separating metal adsorbent particles from a pulp including an open topped and closed bottom cylindrical screen for axiall... | 08/24/1993 |
| 5186834 | Scraper filter system A scraper filter system, which comprises a screw-formed spiral impeller within a cylindrical filter element, and a scraper in the groove formed along the spiral end of the impeller for engagement with the internal surface of the filter element for scrapin... | 02/16/1993 |
| 5133852 | Coal sizing grid A self-cleaning size-segregating grid for a coal crusher has two parallel clearing combs made up of rigid steel fingers which rotate through the grid bars to clear jammed materials therefrom. The propeller-like fingers are preferably staggered in angular ... | 07/28/1992 |
| 5106488 | Device for separating particles from flowing medium The present invention relates to a device for separating particles from flowing medium, whereby separation of coarse particles occurs in a cyclone member (4) and separation of fine particles in a filter device (10) inside the cyclone member. For providing... | 04/21/1992 |
| 4935124 | Rotatable wood chip classifier A rotatable wood chip thickness classifying device. The apparatus includes two coaxial, spaced sets of apertured discs, each set defining a drum. The interdisc spacing of each drum is uniform, each drum having a different interdisc spacing from the other ... | 06/19/1990 |
| 4880539 | Filter for filtering solids out of a liquid having a doctor blade wiping means A pressurized tank filter for filtering oversized solids from a liquid wherein fluid passes through a filter media on which oversized solids are collected. A doctor blade assembly is provided for biasly engaging the filter and accumulating the solids coll... | 11/14/1989 |
| 4857180 | Rotating disc screen A screening apparatus is provided having a plurality of axially aligned discs or rings which are lined up one behind the other, spaced a predetermined distance from each other and rotate as a single unit about a central longitudinal axis. A large central ... | 08/15/1989 |
| 4839035 | Cylindrical screen separator with spirally arranged clearing and conveying blades A separator for separating different sized components from a material and which is particularly useful for separating rocks, branches and other debris from soil to form topsoil. The separator has a cylindrical screen formed from a plurality of circular ba... | 06/13/1989 |
| 4744894 | Fibrous stock screening apparatus A dam is used to divide the typical single screen of a fibrous stock screening apparatus into two primary screening zones. Stock inlet and rejects outlet ports are routed to each primary screening zone. The screen is extended past the typical rotor to cre... | 05/17/1988 |
| 4717471 | Apparatus for screening paper fiber stock In screening apparatus for paper making fiber incorporating a cylindrical screen member provided with cylindrical screening perforations, each of the perforations is characterized by a concentric frustoconical inlet end portion having a maximum diameter a... | 01/05/1988 |
| 4680108 | Screening device A device for screening fluidizible suspensions, such as medium consistency (e.g. 6-15 percent solids) paper pulp includes a housing with a main suspension inlet and a main (rejects) outlet. A rotor having a plurality of ribs is mounted in the housing for ... | 07/14/1987 |
| 4673502 | Fixed filter drum and movable scraper A drum with a wedge-wire filter screen is submerged in a dirty coolant tank and filters machine tool coolant when vacuum is applied to the inside of the drum by means of a suction line at one end of the drum. The vacuum draws the coolant through the scree... | 06/16/1987 |
| 4601819 | Sorting apparatus for fiber stock, especially for manufacturing paper The sorting apparatus contains a screen forming at least part of a circular-cylindrical surface and a rotor having a rotor shaft which is coaxially located at the lengthwise axis defined by the circular-cylindrical surface. The rotor possesses clearing bl... | 07/22/1986 |
| 4543181 | Medium consistency flat disk pressure screen A method and apparatus for screening pulp, or like suspensions, having a consistency of about 6-15 percent. The pulp is passed into a chamber having a flat plate screen, and the pulp is fluidized by rotation of a disk, with vanes, mounted adjacent the scr... | 09/24/1985 |
| 4462901 | Apparatus for screening fibrous stock An apparatus for screening fibrous stock. The apparatus includes a preliminary screen, a rotor, and a cylindrical secondary screen. The stock first passes through the preliminary screen into the rotor and secondary screen. The preliminary filtered stock t... | 07/31/1984 |
| 4389315 | Filter device with permeable corrugated grid panel A filter device for separating a foreign material-liquid mixture into distinct portions includes a holding tank. On a bottom of the tank is a permeable grid panel formed with a series of elongated corrugations. The panel connects with an impermeable incli... | 06/21/1983 |
| 4376044 | Automatic sizing device An automatic sizing device for particulate or granular material containing small, medium and large sized particles flowing therethrough. The device includes an inclined housing with a first conduit having an inlet opening for receipt of the particulate ma... | 03/08/1983 |
| 4348275 | Apparatus for separating fine material from coarse material This invention relates to an apparatus for separating fine material from coarse material. The screens at present in use in the mining industry usually are so-called shaking screens. They comprise a screen-cloth, which is subjected to a vibration movement.... | 09/07/1982 |
| 4329230 | Conveyor system A conveyor scraper for use in an apparatus for separating cake from liquid is disclosed. The apparatus comprises a reservoir for holding cake containing liquid and a continuous conveyor inclined upward from a surface of the liquid. A plurality of outward ... | 05/11/1982 |
| 4289614 | Sprouting beans refinement apparatus The present invention provides a sprouting bean refinement apparatus including a vibration frame with its bottom plate composed of a perforated screen, a vibrator for providing vibration to the vibration frame, and a cleaning mechanism contacted with the ... | 09/15/1981 |
| 4277339 | Paint pigment skimmer An apparatus for separating pigment containing cake from a vehicle such as water is disclosed. The apparatus comprises a skimmer which includes a reservoir for containing the cake containing vehicle and a continuous conveyor belt inclined upward from a su... | 07/07/1981 |
| 4234413 | Method and apparatus for self-cleaning drilling mud separation system A vibratory separator for separating drill solids from drilling mud after return from the well bore, including a separator screen and a screen cleaning device positioned adjacent the screen. The screen cleaning device is supported by suitable means to per... | 11/18/1980 |
