Class 100/146 - Right and left helices

Subclass of Class 100 - Presses
Definition: Apparatus in which the material is forwarded by plural parallel
No. of patents: 26
Last issue date: 04/15/2008

Number	Title	Issue Date
7357074	Compression screw with combination single and double flights A screw for a compression dewatering device comprising an elongated shaft having axially spaced apart first and second ends, a conveying section at the first end of the shaft, having a single helical screw flight rigidly projecting from the shaft, a flightless trans...	04/15/2008
7347140	Screw press for separation of liquid from solid-liquid mixtures especially pulp suspensions Screw press for separation of liquid from solid liquid mixtures, especially pulp suspensions, with a casing with perforations for liquid and a screw shaft provided in it between which a circular gap is formed through which the solid liquid mixture is pressed. Furthe...	03/25/2008
7344033	Solid-liquid separator To provide a solid-liquid separator in which a treatment object such as sludge can be transported without clogging, liquid can be efficiently separated from the treatment object, and a maintenance operation can be easily conducted. Movable plates 12 and fixed...	03/18/2008
7267051	Cotton receiving and densification apparatus for a cotton module builder of a cotton harvesting machine A cotton receiving and densification apparatus for an upper region of a cotton module builder adapted for receiving a plurality of side-by-side flows of cotton and air and converging and densifying the cotton for distribution and conveyance downwardly into the modul...	09/11/2007
7267049	Screw press for pressing fibrous material, in particular sugar beet pulp A screw press (1) for pressing fibrous material, in particular sugar beet pulp, comprising: at least one pair of helical elements (30) which are disposed mutually parallel and side by side and comprise at least one helix (32, 33) disposed about ...	09/11/2007
7191700	Solid-liquid separator A system is provided with a solid-liquid separator which can transport sludge and other material for treatment without clogging and can efficiently separator liquid from such material for treatment. The system includes movable plates and fixed plates alternatingly d...	03/20/2007
6550376	Twin screw press with interrupted flights A screw press with twin screws is provided with discontinuities or interruptions 7 in the flighting 8 of the screws 2. Stationary resistor teeth 9 protrude at these interruptions into the flow of material being pressed....	04/22/2003
6217710	Process for regulating a screw press The invention refers to a process for regulating a screw press, particularly for dewatering a pulp suspension. It is mainly characterized by the speed being varied as a function of the torque....	04/17/2001
5743178	Screw press for dehydrating fibrous materials A screw press for squeezing out liquid from a fibrous material including a screen cage having an inlet for the material to be pressed and an outlet for the pressed material, a pair of parallel Archimedean screws, rotatably arranged inside the screen cage,...	04/28/1998
5526740	Multi-screw press for dewatering waste materials A multi-screw press for dewatering waste materials including a plurality of fixed filtering cylinders and a plurality of revolving filtering cylinders connected to the fixed filtering cylinders are installed within a single outer casing, and a plurality o...	06/18/1996
5421251	Apparatus for compacting material The disclosure relates to an apparatus (1) and a method for compacting material, in which the apparatus comprises a path (10), an infeed device (40) which discharges in an opening (11) disposed in the path, and a spiral (30) which is rotary about its long...	06/06/1995
5417155	Counter-rotation twin-screw extruder for extracting juice A counter-rotation twin-screw extruder for extracting a juice by squeezing vegetables and/or fruits has mutually engaging screws mounted to two mutually parallel rotary shafts which rotate in mutually opposite directions. The screws are enclosed inside a ...	05/23/1995
5333556	Double press screw A double-screw press for separating a liquid from a two-phase solid-liquid material includes a hollow barrel and two screws disposed in the barrel. The barrel comprises a plurality of detachable barrel plates and a plurality of spacers disposed between th...	08/02/1994
5061078	Internal mixer Described herein is an internal mixer of the type including a mixing chamber rotatably accommodating mixing rotors therein, a hopper frame erected on the mixing chamber, a charge hopper provided on one lateral side of the hopper frame for charging a mixin...	10/29/1991
4846054	Apparatus for extracting fat from an animal material The invention relates to a process and an apparatus for extracting fat from an animal material in which according to the invention, the fat is continuously melted and then extracted by passing the animal material through two successive zones, namely a mel...	07/11/1989
4718337	Apparatus for the treatment of plant material The apparatus comprises a plurality of stages having screw presses, the material passing out from the outlet side of the stages being passed by a transfer duct to the inlet side of the following stage. Each stage has a speed adjustable independently of th...	01/12/1988
4565124	Screw presses Screw press with one or more screws having a sieve surface. The screw is fabricated to have a reinforced construction by way of a rigid main stem portion disposed radially inwards of a rigid sieve-forming surface portion and reinforcing ribs disposed betw...	01/21/1986
4438691	Screw press arrangements Screw press arrangement having two or more screw threads arranged side-by-side in a relatively tightly fitting press basket having openings for the drainage of fluid from the material which is fed into the press. At the feeding-in portion the core of the ...	03/27/1984
4393983	Intermeshing screw-type refiner In a refiner for treating cellulose pulp or similar material of the type comprising two intermeshing rotary screws operating in a housing having a material inlet and a material outlet, the surface of each screw comprises a feeding thread section merging i...	07/19/1983
4385876	Split wear liner for twin bore barrel assembly A barrel assembly for a twin screw mixer or similar device is especially designed for ready access to a replaceable split liquid tight barrel liner which is accurately held in seated position within a housing block by a minimum number of bolts or other de...	05/31/1983
4364664	Dual worm extruder having wear resistant bore walls A dual worm extruder includes a worm housing having a cavity and a wear resistant insert accommodated in the cavity. The insert has two parallel extruder bores defining, when viewed together in cross section, passages of circular areas having an overlap. ...	12/21/1982
4214947	Process for the continuous impregnation of a cellulosic material The continuous treatment of a cellulosic material in the form of chips to produce at least partial delignification of the material without true mechanical grinding is effected in apparatus comprising two parallel meshing screws which are rotated in the sa...	07/29/1980
4202773	Apparatus for the dewatering of sludge Clarifier sludge is dewatered to a relatively low residual moisture content by passing it axially in one direction through an inner centrifuge drum in which initial dewatering takes place in a first centrifugal force field. Immediately thereafter the soli...	05/13/1980
4089510	Screw extruder A screw extruder comprises a casing connected to a bed, the casing comprising two portions connected together longitudinally by connecting elements. At least one of the casing portions is articulated with respect to the bed, and the connecting elements ar...	05/16/1978
4072455	Spiral-line press for thermoplastic synthetics A spiral-line press with a double contra-screw arrangement fixed on a single shaft. Each of the screws on the spiral-line press have a length/diameter ratio of less than or equal to 14/1 and a combined L/D - ratio of less than or equal to 28/1. In additio...	02/07/1978
4028027	Screw housing for a screw machine A screw housing with a wearing insert for a two-shafted screw machine wherein the wearing insert has two spaced parallel bores to accommodate screw shafts located with their mutually parallel longitudinal axes in the principal plane of symmetry of the wea...	06/07/1977

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Class 100/146 - Right and left helices