Class 209/406 - Drum

Subclass of Class 209 - Classifying, separating, and assorting solids
Definition: Frames to which the sifting elements of drum or cylindrical
No. of patents: 30
Last issue date: 06/23/2009

Number	Title	Issue Date
7549543	Cylindrical sieve In a cylindrical sieve, a first frame 7 is provided with a first ring plate 7a arranged in a radial direction and a ring plate 7b extended inward in an axial direction X of the sieve from an inner end of the first ring plate 7	06/23/2009
7410064	Circular-cylinder sieve In a cylindrical sieve, a first frame 7 is provided with a first ring plate 7a arranged in a radial direction and a ring plate 7b extended inward in an axial direction X of the sieve from an inner end of the first ring plate 7	08/12/2008
7168570	Screen cylinder with performance boosting configuration A screen cylinder (125) used for screening cellulosic fibrous material pulp in the pulp and paper industry incorporates first (66) and second (67) downstream surfaces (16) having contoured slopes that form a funnel entrance of the grooves...	01/30/2007
7093718	Inline sifter A booster 8 extending in an internal area 53 of a sieve 7 is attached to the outer circumferential face of a rotating shaft 6. The booster 8 has four blades 82, which are radially extended from the outer circumferential face...	08/22/2006
6669028	Cylindrical screen In a cylindrical screen, a screen body has a height greater than its diameter, and is formed of a plurality of portions spaced apart from each other in a direction of the height. Each portion has slits laterally and vertically spaced apart from each other...	12/30/2003
6491168	Pulp screen basket A pulp screening assembly where each support ring is weldlessly bonded to a perforate screen section by a bonding material that preferably is a brazing material. There is a joint between each ring and a screen section in which brazing material is disposed...	12/10/2002
6425486	Cylindrical screen and a method of manufacturing it In a pressure screening device for separating undesired particles from a fibre suspension a cylindrical screen (2) is provided. The screen has an outer side and an inner side and is provided with a plurality of projections (19) on the outer side of the sc...	07/30/2002
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
6131743	Screen basket for fiber suspensions and method for the production thereof A rotationally symmetrical screen for fiber suspensions with an inlet and outlet side, having a series of profiled bars which extend transversely to the circumferential direction of the screen, the cross-section of the profiled bars having a first end reg...	10/17/2000
6056126	Screen device with slot-shaped openings A screen device including a multitude of parallel rods between which are located the sorting slots. The rods are held in position by supporting elements, which are connected with carriers. The respective cover elements are located at the faces of the rods...	05/02/2000
6016921	Sizing panel for rotating cylindrical separator The present invention provides a separator having a rotatable frame and a plurality of sizing panels attached thereto. The frame has a pair of end rings and a plurality of stringers extending longitudinally between the end rings. Each stringer has a subst...	01/25/2000
5971160	Fibresaver screen basket support A support structure for thin screenplates utilized for fine screens in Fibresaving applications for pulp fiber suspensions or the like wherein a support structure having a screen support in minimum screen contact positioned by a support reinforcement and ...	10/26/1999
5968357	Screen basket having a removable and replaceable cylindrical mesh liner A screen basket for filtering an aqueous fiber suspension includes a cylindrical foraminous filter element, anchoring collars surrounding and fixed to opposite ends of the filter element, at least two support rings surrounding the filter element, and supp...	10/19/1999
5954956	Modular screen cylinder and a method for its manufacture An apparatus and method for screening wood pulp and other fibrous fluid suspensions. The apparatus and method relate to rebuildable, modular screen cylinders for screening thick pulp slurry in pulp and paper applications. The screen sections of the modula...	09/21/1999
5823355	Fibresaver screen basket support A support structure for thin screenplates utilized for fine screens in Fibresaving applications for pulp fiber suspensions or the like wherein a support structure having a screen support in minimum screen contact positioned by a support reinforcement and ...	10/20/1998
5791495	Paper pulp screen cylinder A plurality of like wedge bars are formed with a groove between two lands. The wedge bars are assembled into a cylindrical screen, with the grooves defining screening slots of a uniform width. The wedge bars may be electron beam welded or furnace brazed t...	08/11/1998
5679250	Pressurized screen arrangement A pressurized screen arrangement for screening lignocellulose containing fiber material, comprising a screen housing (10) with a screen cage (11) are arranged in first and, respectively, second attachment members (17, 18) in the screen housing. Both ends ...	10/21/1997
5667075	Classifying wheel for centrifugal-wheel classifiers The invention concerns the design of classifying wheel made of a waterproof sintered material with vanes arranged in a ring that run parallel to the rotational axis and that are positioned between the hub-bearing circular disc and an annular cover disc, w...	09/16/1997
5513757	Continuous cut slotted screen basket A continuous cut slotted screen basket for removing contaminants from papermaking stock is disclosed. The screen basket has a wall member with first and second sides. Blind parallel first slots are cut into and are spaced across the first side. The first ...	05/07/1996
5507396	Rotating sizer with screen panels The present invention provides a trommel having a plurality of screen panels whose longitudinally extending edges are disposed within a channel formed in a longitudinally extending rib member and fastened in place....	04/16/1996
5472095	Screening cylinder Screening cylinders for screening lignocellulose-containing fibrous material are disclosed. The cylinders are formed from longitudinal bars separated by gaps, and support rings extending around the circumference of the cylinders to support the bars, as we...	12/05/1995
5301813	Apparatus for separating material An apparatus for separating materials into different sized particles, especially difficult materials that may contain wet or sticky particles or lightweight foreign material. The material is separated by feeding it into a dish-shaped unit open at the top ...	04/12/1994
5255791	End rim of cylindrical sieve for paper pulp strainer and classifier and process, of making it Process of making and mounting an end rim of a cylindrical sieve (1) for paper pulp strainer and classifier characterized by the fact that the rim is of one piece, molded directly on the end of the cylinder with a hardenable or thermosetting plastic mater...	10/26/1993
5248042	Resilient wire-wrapped, and adjustably tensioned screen drum with drum overload-preventing feedback control A mobile screening apparatus includes a horizontal rotary drum preferably fed by underflow from a prescreening device that is reversible endless belt of screening grizzly bars. The belt reverses for expelling oversize material caught between bars. Force n...	09/28/1993
5084991	Pipeline padding apparatus and method A method and apparatus are disclosed for padding a pipeline lying in a ditch by separating fine particles from coarse particles in the material excavated from the ditch and windrowed along the side of the ditch comprising moving a frame supporting a rotat...	02/04/1992
4986900	Sectional screen cylinder A screen cylinder is made up of a plurality of identical ceramic elements in arcuate form having screen openings, and opposite longitudinally extending edges carrying a tongue and groove, respectively. The elements are joined one to the other along their ...	01/22/1991
4892656	Vacuum filter with releasably clamped sealing strip A vacuum filter for the separation of solids from liquids, comprising an endlessly circulating array of troughs which constitute a common horizontal filter surface, on which an endless filter cloth is laid, in which each trough has an elastic sealing stri...	01/09/1990
4828689	Purifier screen of non-welded manufacture A screen for a purifier or separator, especially for a paper pulp purifier embodied by assembly of parallel bars on crosspieces, the assembly being made without welds on the crosspieces by dovetailed notches being borned by the bars, the lips of the notch...	05/09/1989
4569761	Centrifuge sieve and method of producing the same In a centrifuge sieve drum, wherein the inner surface of the drum is lined with a support arrangement carrying wear-resistant sieve or screen rods, there is obtained a compensation of the different thermal expansions of the sieve rods and the support arra...	02/11/1986
4430221	Centrifuge sieve In a centrifuge sieve drum wherein the inner surface of the drum is lined with a support arrangement which carries wear-resistant sieve or screen rods formed of a hard material, there is obtained a compensation of the different thermal expansions of the s...	02/07/1984

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Class 209/406 - Drum