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| Number | Title | Issue Date |
| 5201423 | Fiber suspensions sorter having a plurality of screen baskets The invention concerns a sorter with at least two screen baskets in a housing unit. The invention is characterized in that with screen basket diameters of at least 600 mm the at least two screen baskets are contained side by side, spaced, in an arrangemen... | 04/13/1993 |
| 5186332 | Paper stock screening apparatus having heavy rejects trap Screening apparatus for paper making stock comprises a generally cylindrical vertical housing having the interior thereof separated by a cylindrical perforated screening member into a screening chamber and an annular accepts chamber on the inner and outer... | 02/16/1993 |
| 5152891 | Self-cleaning strainer A backwash strainer including a body, a strainer element having an inlet side contained in the body, and a space defined between the body and the strainer element. The body includes an inlet to the strainer element and an outlet from the annular space. A ... | 10/06/1992 |
| 5124029 | Method of and device for fractionating suspensions A device for fractionating pulp suspensions has a series of vertical filter sheets attached to a horizontal shaft. Suspension is sprayed against the sheets to effect a separation of coarse and fine solids. Cleansing liquid is also sprayed against the shee... | 06/23/1992 |
| 5119953 | Pulp suspension screening and fractionation apparatus An improved apparatus and process for fractionating pulp suspensions consists of multiple interchangeable modular treating compartments stacked atop one another. Pulp suspension is fractionated in the first compartment, and one of the two resulting fracti... | 06/09/1992 |
| 5110457 | Ore sample and water recovery apparatus and method therefor A method and apparatus for preparing an ore sample and recovering water from a drilling rig is disclosed. Ore sample and water recovery apparatus (10) includes a slurry inlet (12) for receiving slurry from a drilling rig. Slurry is directed from slurry in... | 05/05/1992 |
| 5045181 | Apparatus for removing ash from repulped wastepaper An apparatus is disclosed for removing ash from repulped wastepaper which contains ash together with cellulosic fibers. The apparatus includes a frame and a plurality of rolls which are rotatably secured to the frame, such that the axes of rotation of the... | 09/03/1991 |
| 5019248 | Apparatus for grading fibrous material An apparatus for separating different phases of dry material, such as plant fibers, from each other includes a rotating hollow body on an inclined axis with an inner perforated wall, an outer perforated wall, and partitions at spaced intervals within the ... | 05/28/1991 |
| 4997578 | Method and apparatus for dewatering and squeezing material An apparatus for dewatering and squeezing a water containing material comprises a drum with a sieve mantle defining two co-operating drum sections, each comprising a feed screw extending therein. The first section of the drum in the feed direction is form... | 03/05/1991 |
| 4995966 | Sifter-screening machine for bulk material A sifter-screening machine for loose material, especially flour, including an inlet for the material, downstream thereof a screen through which the material can be conveyed via an air stream, and downstream thereof an outlet for screened material. Dispose... | 02/26/1991 |
| 4940535 | Solids flow distribution apparatus A solids flow distribution apparatus is disclosed for use with two or more solid separation devices, such as shale shakers. The appartatus includes a plenum in communication with a source of flow of solids and liquid, such as from a drilling rig's mud sys... | 07/10/1990 |
| 4927529 | Method and apparatus for separating knots A method of and apparatus for separating knots from a fibre suspension in the wood processing industry. A known problem in the prior art has been the quick wear of the screen surface of the knotter when the screen surface has been profiled. On the other h... | 05/22/1990 |
| 4915822 | Method and apparatus for treating fiber suspension A method and an apparatus for treating a fiber suspension wherein the fiber suspension is fed into a treatment apparatus having treatment zones and divided into two fractions, an accept and a reject, the reject being guided from one zone behind at least o... | 04/10/1990 |
| 4902409 | Nozzle for screen apparatus A nozzle block (66) and a sieve screen unit (12), in which the outlet aperture (78) of the nozzle body (68) has a substantially oval shape to produce a fan-shaped flow pattern against the screen (24). Two nozzle blocks (66a), (66b) are mounted within the ... | 02/20/1990 |
| 4872953 | Apparatus for improving the quality of paper manufactured from recycled paper with a hydrokinetic amplifier An apparatus and method for improving the quality of paper manufactured from recycle paper stock which comprises a hydrokinetic amplifier, a pulper, a dump chest, a cyclone separator, a pressure screen, a vibratory screen and a holding tank. Contaminants ... | 10/10/1989 |
| 4857175 | Centrifugal debris catcher A debris catcher comprising a conical screen (filter) in a drill string which defines an annular accumulation space between the screen and the inner wall of the drill string is presented. The central portion of the screen is open to establish an unimpeded... | 08/15/1989 |
| 4849105 | Apparatus for removing solid particles from cooling water An apparatus for removing solid particles from cooling water having a tubular housing (1), a funnel-shaped trap sieve (4) attached to the inner housing wall with the tip facing in the flow direction, and a pressurized water sprayer (11). The sprayer inclu... | 07/18/1989 |
| 4789068 | Wood chip classifying system A multi-stage apparatus and process for separating wood chips of a desired size range for pulp production, from an intermixture of materials e.g. from a log chipper. A disc screen screens out the chips and other materials having a size larger than the des... | 12/06/1988 |
| 4726880 | Method and apparatus for improving the quality of paper manufactured from recycled paper with a hydrokinetic amplifier An apparatus for improving the quality of paper manufactured from a contaminated fibrous stock having therein recycled paper pulp and contaminants smaller than a predetermined size and with a specific gravity approximately that of the specific gravity of ... | 02/23/1988 |
| 4710286 | Sieve for powder A sieve for powder. The sieve has a housing in which a transverse screen is mounted to divide the housing into upper and lower chambers. Air under pressure carries powder into a cyclone stack mounted on top of the housing from which it is directed onto th... | 12/01/1987 |
| 4699710 | Separator for particulates Apparatus for separating relatively large particles from dust particles, comprising an enclosed separating station for separating the large particles from the dust particles. The large particle and dust particle mixture is pneumatically conveyed from a su... | 10/13/1987 |
| 4689143 | Drum separator A drum separator includes a cylindrical screen drum which is mounted for rotation within a sealed housing such that a small portion of the perimeter of the screen drum is exposed. Air, fibers, and fines are introduced onto a first part of the exposed port... | 08/25/1987 |
| 4663030 | Disk rotor for selectifier screen In screening apparatus for paper making stock including a housing, a cylindrical perforated screen member separating the interior of the housing into a supply chamber and an accepts chamber on the inside and outside respectively of the screen member, an i... | 05/05/1987 |
| 4650570 | Strainer assembly for pulp An assembly for straining of pulp suspensions and the like comprises a strainer drum (1) mounted in a strainer house (2). One or a plurality of devices (5-9) are provided, in order to free impurity particles from fibers, preferably designed like an impact... | 03/17/1987 |
| 4634521 | Screening apparatus with light reject removal A screen for fibre pulp is provided with means for removal of light reject. The screening apparatus comprises a vertical cylindrical screen (2); and a rotor (3) which is concentrically disposed inside the screen and the substantially closed outer surface ... | 01/06/1987 |
| 4623449 | Apparatus for the separation of the reusable part from the unusable part of granular form filter material, in particular of granular form activated charcoal, from filter equipment Apparatus for the separation of the reusable part from the unusable part of granular form filter material from filter equipment, particularly granular form activiated charcoal, comprising a base frame; a sieve drum for sieving of the granular form filter ... | 11/18/1986 |
| 4619761 | Method for screening or fractionation An improved method for screening and fractionation. By using a housing interiorly divided by a screen plate into a primary and a secondary chamber with the secondary chamber further divided by a fluid impermeable wall, a process fluid stream containing pa... | 10/28/1986 |
| 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 |
| 4596497 | Powder disperser A powder disperser comprises a nozzle having a narrow discharge port for discharging a powder. A high speed air flow discharge port forms a narrow air port encompassing the outer circumference of the discharge port of the nozzle and is inwardly slanting a... | 06/24/1986 |
| 4551242 | Apparatus for dynamic classification of suspensions of solid bodies in liquids Apparatus for a dynamic classification of suspensions of solid bodies in liquids consisting of a cylindrical body with a conical bottom terminated with an outlet stub pipe, provided with a tangentially situated inlet stub pipe and a co-axially situated ro... | 11/05/1985 |
| 4540421 | Material discharge unit It is an object of the invention to provide a unit for discharging material, such as lengths of paper strip from an air stream. As shown in FIG. 1, a flow of air with suspended waste material enters, as illustrated by the arrow 1, along a duct 2. The flow... | 09/10/1985 |
| 4536295 | Method for separating coarse particles from a liquid For the purpose of separating coarse particles from a liquid such as water, e.g. in the cellulose industry, laundries etc., a vertical container is used in which a nozzle receives liquid from a pump and sprays the liquid in the form of a conical liquid je... | 08/20/1985 |
| 4519114 | Apparatus and method for cleaning textile fiber Apparatus and method for supplementary cleaning of cotton fibers employing a housing having an interior dividing screen separating the housing into two chambers and a fan adapted to entrain the fibers in a moving airstream and direct them into the housing... | 05/28/1985 |
| 4512880 | Method of removing slimes from slurries Method of removing slimes from slime-containing slurries in which the slurry is force fed at an acute angle onto a downwardly directed screen surface of a welded profile wire screen having fine screen openings at a pressure which for the slime content and... | 04/23/1985 |
| 4502951 | Suction device for obtaining dust samples Suction device for obtaining dust samples of nearly homogeneous grain sizes and with a reproducible bulk density for the analysis of ores. The device, which is suitable for use during the mining of ores, includes a cylindrical casing, having an opening at... | 03/05/1985 |
| 4485009 | Granulation recovery device and method A granulation recovery device comprising a vacuum head, a canister removably attached to said vacuum head and a membrane and a support therefor which act as an interface between the vacuum head and the canister. The canister also contains means for divert... | 11/27/1984 |
| 4476019 | Pellet dryer A pellet dryer is disclosed for removing plastic pellets from entraining water and drying the same. The rotating structure of the pellet dryer is essentially contained and supported on a door of a cabinet, so that the opening of the cabinet door exposes t... | 10/09/1984 |
| 4466862 | Method for screening, separating, and removing fiber bundles, lumps, knots and foreign matter from aqueous dispersions used in forming non-woven fabrics by wet-laying Apparatus and method for use in making non-woven fabrics by wet-laying an aqueous dispersion. The apparatus and method screens, separates and remover fiber defects and foreign matter above a prescribed size from other dispersion fibers. The apparatus incl... | 08/21/1984 |
| 4455222 | Flux recovery device An improved arc-welding flux recovery device which is compact, contamination-free, and can be economically maintained.... | 06/19/1984 |
| 4447320 | Device for cleaning and recovering paper pulp A device for cleaning and recovering paper pulp includes a tank divided into inner and outer chambers by a fixed cylindrical sieve. The inner chamber also contains a rotating drum with blades that draw acceptable pulp from the outer chamber through the si... | 05/08/1984 |
