With Separation From Material Of Liquid Expressed Patents (Class 100/37)
  • Patent number: 5336843
    Abstract: A process for compacting normally occurring radioactive material (NORM) into a cylinder, such as a pipe, by providing a cylinder having a continuous sidewall, a first open end and a second closed in, and a cavity formed by the side wall defining a NORM storage space therein; providing a hopper for holding a quantity of the NORM; positioning the open end of the cylinder against the hopper, so that there is communication between the hopper space containing the NORM and the cylinder space; moving a ram member through the hopper toward the open end of the cylinder for forcing a quantity of the NORM contained within the hopper into the cylinder; repeating the compaction step until the cylinder is substantially filled with the NORM; and closing off the open end of the cylinder so that the NORM cannot move from the cylinder. The process also includes the step of removing the moisture from the NORM before the NORM is compacted in the cylinder.
    Type: Grant
    Filed: December 7, 1992
    Date of Patent: August 9, 1994
    Inventor: John Zimmer
  • Patent number: 5325771
    Abstract: An oil filter crushing apparatus and method utilizing a housing defining an interior space and a bottom surface, a crushing member fitted within the housing having a crushing surface and defining a slot opening through the crushing surface, a puncturer having a point and movably attached to the crushing member within the slot opening so that the puncturer is behind the crushing surface in a retracted position and at least the point of the puncturer is forward of the crushing surface in a puncturing position.
    Type: Grant
    Filed: April 29, 1993
    Date of Patent: July 5, 1994
    Inventor: Drew W. Morris
  • Patent number: 5298079
    Abstract: A process for removing residual oil from used oil filters. The process includes washing the oil filters with a wash water while simultaneously crushing the oil filters. The wash water has a carefully selected and limited surfactant to effectively remove the residual oil while reducing emulsification of the removed residual oil into the wash water. The oil is recovered and the wash water is recirculated after having been amended with surfactant and/or water to assure that the surfactant remains within the desired limits.
    Type: Grant
    Filed: January 8, 1993
    Date of Patent: March 29, 1994
    Inventor: E. Park Guymon
  • Patent number: 5236136
    Abstract: A system and method for recycling used oil filters by shredding the filters to facilitate separation of the metal and nonmetal filter components and to release free oil trapped inside the filters, separating the metal and nonmetal filter components using combined magnetic and gravitational means, compressing the nonmetal filter components, and recovering the oil therefrom.
    Type: Grant
    Filed: December 20, 1991
    Date of Patent: August 17, 1993
    Assignee: Michael W. McCarty
    Inventors: Michael W. McCarty, James M. Taylor, Lloyd A. Baillie
  • Patent number: 5231922
    Abstract: A process for controlling a press for the extraction of juice from agricultural products, in which the pressing stroke of a pressing cycle is ended at the earliest when the maximum average juice output occurs. This process can be performed using a juice discharge arrangement of a press in which is connected a flowmeter as a sensor, which in turn is connected to a device controlling the drive elements of the press.
    Type: Grant
    Filed: May 4, 1992
    Date of Patent: August 3, 1993
    Assignee: Bucher-Guyer AG Maschinenfabrik
    Inventor: Eduard Hartmann
  • Patent number: 5213695
    Abstract: An apparatus for separating solids and liquids includes a pair of compaction chambers into each of which is inserted a fifty five gallon drum that receives the liquids and solids before they are separated. A compaction platen has a liquid-retaining wall mounted about its periphery in trailing relation to the platen, and separation of the solids and liquids is accomplished by lowering the platen into a container that has been filled with flotsam including liquids and solids. The platen has a breadth slightly less than the breadth of the container so that liquids may escape around the peripheral border of the platen as it descends into the container. The escaping liquids are collected on the trailing end of the platen by the retention wall and are carried under a vacuum or pumped to a liquid storage facility for further treatment. The platen is telescopically mounted in a housing that reciprocates between the compaction chambers so that the separation process is continuous.
    Type: Grant
    Filed: February 20, 1992
    Date of Patent: May 25, 1993
    Inventor: Stanley N. Pinder
  • Patent number: 5207154
    Abstract: Process and apparatus for the control and the adjustment of a press during a juice extraction operating having at least one pressure increase sequence and measuring and comparing to a predetermined value the rate or the amount of liquid extracted before, during or after the pressing, or the partially pressed materials to be pressed remaining in the press after the pressing, and then using the resulting value of the difference of the rates or the amounts of extracted liquid and the value of the expected rates or amounts or the amount of materials to be pressed remaining in the press, if applicable, partially pressed, to begin, continue, interrupt, modify or complete the process of extracting the juice. The process is at least partially programmed.
    Type: Grant
    Filed: November 15, 1991
    Date of Patent: May 4, 1993
    Assignee: Constructions Meca-Metalliques Chalonnaises S.A.
    Inventor: Jean Bonnet
  • Patent number: 5167836
    Abstract: The invention concerns a method for controlling a press filter, said press filter having electric motors for operating said press filter. At least one of said electric motors of said press filter is driven by a frequency filter. A logic control unit is used for sending a program-controlled analog signal to said frequency converter. The output current from said frequency converter having a frequency proportional to the magnitude of said analog signal received from said logic control unit is used for driving the press filter's electric motors, whose rotational speeds thereby become proportional to the drive current frequency. A desired electric motor is individually started by way of applying power to the motor via a switch element which is activated by a signal from the logic control unit.
    Type: Grant
    Filed: July 1, 1991
    Date of Patent: December 1, 1992
    Assignee: Larox Oy
    Inventors: Mauno Kylliainen, Erkki Naatanen, Petri Saira
  • Patent number: 5167832
    Abstract: The invention relates to a method for dewatering particle collections with the aid of a filter press in a cyclic sequence comprising filling, dewatering and emptying stages. The various stages within each cycle and between consecutive cycles are followed-up and determined by measuring continuously a magnitude which varies with the mass of the press and its contents, preferably the pressure exerted by the press and its contents on the surface supporting the press.
    Type: Grant
    Filed: January 17, 1991
    Date of Patent: December 1, 1992
    Assignee: Sala International AB
    Inventors: Mats Carlsson, Torbjorn Jonsson, Per-Erik Sandgren, Hans-Goran Hedlund
  • Patent number: 5156872
    Abstract: An apparatus and method for extracting juice from raw juice containing material is disclosed. The apparatus includes a supporting housing, a pair of meshing helical gears (2,3) for crushing the raw juice containing material to initially extract juice therefrom and with each helical gear terminating in a tapered screw. A sieve (4) is operatively positioned around the helical gears and each of the tapered screws with the sieve being branched (47,48) with each branch housing at least a portion of one of the tapered screws, respectively. Each branch of the sieve has a terminal end with a discharge outlet formed thereat to enable each of the screws to further extract juice from the crushed raw juice containing material by compressingly moving the crushed juice containing material along one of the branch portions of the sieve and toward one of the discharge outlets formed in the sieve.
    Type: Grant
    Filed: January 29, 1992
    Date of Patent: October 20, 1992
    Inventor: Moon H. Lee
  • Patent number: 5143628
    Abstract: A sludge volume of difficult to dewater sludge is subdivided in a sludge dewatering press into fractional volumes which are self-draining even at press pressures of 50 bar and more. The partitions are water-permeable and form water channels for conducting the expressed liquid away from the sludge volume.
    Type: Grant
    Filed: April 25, 1991
    Date of Patent: September 1, 1992
    Assignee: G. Siempelkamp GmbH & Co.
    Inventors: Reinhard Bott, Robert Kern, Thomas Langeloh, Holger Gross
  • Patent number: 5134929
    Abstract: A method and apparatus for removing liquid from particles of compressible material includes feeding particles to two opposing press surfaces that are separated by a distance that decreases along a feeding direction wherein at least one of the press surfaces is formed of a number of parallel transfer elements and wherein each transfer element is connected to a corresponding pressing actuator. The sum of a surface area of each transfer element forms a total press surface area for one of the press surfaces. The transfer elements are reciprocated in a forward and backward motion along the conveying direction such that a total press surface area includes at any particular time a forward moving surface area that is larger than any backward moving surface area.
    Type: Grant
    Filed: September 17, 1990
    Date of Patent: August 4, 1992
    Assignee: Rauma-Repola Oy
    Inventors: Arvo Jonkka, Antti Tohkala, Esko Unkuri
  • Patent number: 5125331
    Abstract: The invented device includes a chamber in which articles to be crushed are placed, a bulkhead at one end of the chamber, a plunger operating in the chamber to compress articles against the bulkhead, a collection area adjacent to the chamber for collecting liquid extracted from the articles and also for collecting the articles after they have been crushed, and a plate that sweeps any liquid and the articles from the collection area into appropriate receptacles.
    Type: Grant
    Filed: October 27, 1989
    Date of Patent: June 30, 1992
    Inventor: Kevin L. Wood
  • Patent number: 5112502
    Abstract: In homogeneous substitution washing method and apparatus for a cake using a filter press which comprises pairs of opposed squeezed and squeezing filtering plate units, pairs of opposed squeezed and squeezing filtering cloths, each pair of filtering cloths being arranged between the pair of filtering plate units, and diaphragms. Each diaphragm is arranged on one side of one of the pair of filtering plate units. Stock solution is supplied into a space between the pair of filtering cloths, and is pressurized and dehydrated by the diaphragm to form the cake. The cake is processed in washing to obtain a clean raw material. In parallel with the pressurizing and dehydrating step of the stock solution, a washing liquid is poured into a space between the diaphragm and the squeezing filtering cloth abutted against the diaphragm, at a pressure at least a pressurizing and dehydrating pressure applied to the stock solution through the diaphragm, to wash the cake between the pair of filtering cloths.
    Type: Grant
    Filed: July 18, 1991
    Date of Patent: May 12, 1992
    Assignee: Tsukishima Kikai Co., Ltd.
    Inventors: Kazuo Satoh, Koichiro Sekine, Kou Kakisada, Minoru Morita
  • Patent number: 5103721
    Abstract: A household recycling appliance for recycling aluminum cans. The appliance has a housing containing a vertical crushing chamber with a frontal opening into which an empty aluminum can is to be inserted. The bottom plate of the crushing chamber, serving as a plunger or piston, is advanced upwardly by a motor and bell crank assembly to crush the can against the fixed top plate. As the bottom plate recedes, a spring-operated lever ejects the crushed can rearwardly via a conduit into a can storage receptacle which is sized to hold a selective number of crushed cans. Any residual fluid draining from the crushed can is collected in a fluid storage receptacle located below the can storage receptacle. The can and fluid storage receptacles are removable for transferring the crushed cans and disposing of the fluids.
    Type: Grant
    Filed: September 20, 1990
    Date of Patent: April 14, 1992
    Assignee: Sjoberg Industries, Inc.
    Inventors: Albert S. Chou, Donald J. Massaro, Frank M. Balbas
  • Patent number: 5087424
    Abstract: An apparatus for facilitating the release of an ingredient of a plastic or elastic sample of a pharmaceutical or confectionery material while the sample is in contact with a liquid medium which includes a base, a fixed lower jaw, a movable upper jaw and a member for moving the upper jaw toward and away from the lower jaw, a support for mounting and supporting a sample in the space between the upper surface of the lower jaw and the lower surface of the upper jaw, and a container surrounding both the jaws and sample so as to confine a liquid medium to the area surrounding the sample.
    Type: Grant
    Filed: August 1, 1989
    Date of Patent: February 11, 1992
    Assignees: Kabi Pharmacia AB, Akstiebolaget Leo.
    Inventor: Lars R. Liljewall
  • Patent number: 5081921
    Abstract: The invention relates to a method of pressing fruit, in particular grapes, in a rotary cylindrical drum containing at least one flexible membrane supplied with a fluid under pressure in order to press fruit against the wall of the drum, and also to a pneumatic press for implementing the method. The pneumatic press of the invention is of the type comprising a rotary cylindrical drum (7) containing at least one flexible membrane (9, 35) and is characterized by the fact that said drum (7) is closed at one end (7), with a loading duct (19) opening out into the drum (7) in the vicinity of its closed end, the end of the drum opposite to its closed end (7) being at least partially open, said drum (7) including means (16) for recovering juice. The invention is particularly applicable to pressing grapes.
    Type: Grant
    Filed: June 7, 1990
    Date of Patent: January 21, 1992
    Assignee: Etablissements Gregoire S.A.
    Inventor: James Gregoire
  • Patent number: 5030360
    Abstract: A receptacle for use in compacting liquid-laden asbestos-containing material to separate the liquids therefrom, the receptacle being adapted to be compacted within a compactor, wherein the receptacle is liquid permeable and capable of retaining a substantial portion of the asbestos-containing material when compacted within the compactor so that a quantity of the liquids are separated from the asbestos-containing material and expelled from the receptacle when the receptacle is compacted within the compactor. A method for separating liquids from liquid-laden asbestos-containing material comprising collecting liquid-laden asbestos-containing material in a liquid permeable receptacle capable of retaining a substantial portion of the asbestos-containing material when the receptacle is compacted, and then compacting the receptacle so that a quantity of the liquids are separated from the asbestos-containing material and expelled from the receptacle.
    Type: Grant
    Filed: September 13, 1989
    Date of Patent: July 9, 1991
    Inventors: Murray Grainger, Willy C. Dittmar
  • Patent number: 5001975
    Abstract: An automated appliance for dehydrating and pelletizing household or other garbage into a sanitized free-flowing form. The apparatus and method provide for compaction and folding of garbage feed material in three directions, to produce a pellet which is held under heat and pressure until computer-programmed temperature, moisture and pressure and points are reached, and the pellet is ejected.
    Type: Grant
    Filed: December 7, 1989
    Date of Patent: March 26, 1991
    Inventor: Kenneth A. Finden
  • Patent number: 4997578
    Abstract: 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 formed for dewatering of the material mainly by self-drainage. The first drum section is rotatable and is provided with means for cleaning the sieve mantle holes. The second section is formed for increased compression of the material, and has a thread height for the feed screw smaller at the outlet of the second section than at the inlet to this section.
    Type: Grant
    Filed: October 18, 1989
    Date of Patent: March 5, 1991
    Assignee: Hedemora AB
    Inventor: Torsten L. Berggren
  • Patent number: 4953457
    Abstract: A method and apparatus for treating biodegradable solid urban waste materials and selecting those non biodegradable components for recycling comprises a tunnel (1) made of steel defining an inner room or ambient of parallelepiped shape, having a rear hinge door (4) associated with adjustable counterbalance weight (5). Near the door (4) blade kneading devices (6) can be installed. In the last portion of the bottom wall of the tunnel (1) holes (7) are arranged, positioned just over a channel (3) connected to a recovering tank (22) of the percolate. At the other front end of the tunnel a moving wall (9) is mounted, capable of being moved to and fro along two rails (10) by means of hydraulic jacks (12). In the center of the wall (9) a hydraulic cylinder (31, 31a, 31b) is anchored, the piston rod (31a) which enters into the iner chamber of the tunnel (1) for compressing the waste mass. Near the upper wall (32) of the tunnel (1), there is a circulating forced air pre-chamber (13) having a grating structure.
    Type: Grant
    Filed: March 14, 1989
    Date of Patent: September 4, 1990
    Inventor: Liborio Campo
  • Patent number: 4919824
    Abstract: Solid particles with entrained liquid are removed from a filtration tank and deposited on a chute inlet to a pair of rollers. One roller is pressed toward the opposite roller such that the solid particles pass through the nip of the rollers and the liquid is squeezed therefrom. The solid particles are scraped from the rollers on the outlet side of the deliquifier for collection. The liquid is collected on the inlet side of the rollers for reuse.
    Type: Grant
    Filed: June 29, 1988
    Date of Patent: April 24, 1990
    Assignee: Henry Filters, Inc.
    Inventors: John L. Creps, Matthew O. Kelley
  • Patent number: 4892665
    Abstract: A press for pressing liquid from thin layers of liquid-containing masses including a frame, first and second spaced fixed platens on the frame, a movable platen between the first and second fixed platens for dividing the press into first and second operating sections, first and second bag-carrying frames in the first and second operating sections, first and second series of racks on the first and second bag-carrying frames, first and second series of bags interspersed with the first and second series of racks, the bags having downwardly converging side seams from open tops, pivot means mounting the first and second bag-carrying frames for pivotal movement between first positions wherein the bags have their open tops facing upwardly and second positions outside of the frame where the bags have their open tops facing downwardly, and motor mechanism for selectively moving the movable platen toward and away from each of the fixed platens.
    Type: Grant
    Filed: December 5, 1983
    Date of Patent: January 9, 1990
    Inventor: Dale E. Wettlaufer
  • Patent number: 4890550
    Abstract: An apparatus for treating fibre material containing liquid, comprising two rotating drums (2, 3), an endless driven belt (17) pervious to liquid and gas and extending between and passing around the surfaces (8, 9) of the drums, a feeding device (10) for the supply and a discharging device (13) for the removal of the fibre material, at least one container for collecting liquid, the liquid being displaced from the fibre material through the endless driven belt (17), a continuous wall (18) impervious to liquid and gas and extending along a main part of and at a distance from the belt (17) from the feeding device (10) to the discharging device (13) in such a manenr that a continuous space (19) is defined for the fibre material between said wall (18) and the belt (17), and at least a part of the space (19), seen in the direction of movement of the belt (17), forms one or more treating zones where liquid is displaced from the fibre web through the movable belt (17) to one or more containers.
    Type: Grant
    Filed: October 28, 1988
    Date of Patent: January 2, 1990
    Assignee: Kamyr Aktiebolag
    Inventors: Sture Eriksson, Ann-Sofi Jonsson, Bengt Jonsson
  • Patent number: 4829895
    Abstract: A refuse compaction unit comprises a refuse inlet, a compactor located below the refuse inlet and communicating therewith and an outlet communicating with the compactor on the opposite side thereof from the refuse inlet, the compactor being constituted of at least one comb-like rotor consited of a plurality of outwardly projecting blades and at least one comb-like stator acting as a partition between the refuse inlet and refuse outlet and having a plurality of teeth with which the blades of the comb-like rotor interdigitate.
    Type: Grant
    Filed: October 26, 1987
    Date of Patent: May 16, 1989
    Assignee: Hakushin Kogyo Co., Ltd.
    Inventor: Hiroki Juhuku
  • Patent number: 4782747
    Abstract: A continuous device and process for extracting liquid from mash, sludge or pulp bearing slurries. The device comprises a pair of parallel opposed and counter rotating rolls each consisting of a base roll member having circumferentially disposed grid member consisting of a multiplicity of upright standing leaves which interbolt to form a grid which encases the entire surface of the roll member. Raw material for deliquification is spread over the grid and compressed by an inflatable, reciprocating platen to express liquid through the grid into underlying collection channels. The rolls are then rotated toward each other to express additional liquid and produce a substantially dry material. The liquid collected in the collection channels is withdrawn by applying a negative pressure through orifices located at the axial extent of the rolls.
    Type: Grant
    Filed: December 11, 1986
    Date of Patent: November 8, 1988
    Inventors: Daniel D. Unger, Gregory T. Unger
  • Patent number: 4776269
    Abstract: A method for agglomerating and dewatering elastomeric material having a relatively high water content wherein the elastomeric material is fed to a pair of counterrotating pressing rolls with a tight nip opening. The elastomeric material is drawn through the nip opening and compacted and dewatered therein. The method of the present invention produces at least a doubling of the particle size of the feed material and a reduction in the water content of the feed material in the range of 30 to 80%.
    Type: Grant
    Filed: November 17, 1986
    Date of Patent: October 11, 1988
    Assignee: Exxon Chemical Patents Inc.
    Inventors: Richard S. Coggins, Richard C. Yeh, James P. Norton
  • Patent number: 4768430
    Abstract: A compression and volume reduction treatment apparatus for solid waste including a compression sleeve for receiving therein a cylindrical vessel filled with the solid waste and a press ram arranged above said compression sleeve movable upward and downward for compressing, at high pressure, the cylindrical vessel in the compression sleeve. The compression sleeve includes an upper straight large diameter portion, a lower straight small diameter portion and an intermediate tapered portion, thereby compressing the cylindrical vessel and reducing its volume in three dimensional directions by compressing the vessel radially inwardly at the tapered inner surface of the intermediate tapered portion and compressing axially at the inner surface of the lower straight small diameter portion when the cylindrical vessel in said upper straight large diameter portion is urged by said press ram in a uniaxial direction.
    Type: Grant
    Filed: March 16, 1987
    Date of Patent: September 6, 1988
    Assignee: NGK Insulators, Ltd.
    Inventors: Kojuro Yamamoto, Katsutoshi Torita
  • Patent number: 4748905
    Abstract: A refuse compactor is disclosed that includes a flexible bag of non-permeable material having an opening through which refuse can be placed in the bag. The bag is supported in an upright position to receive refuse through the openings in the bag. A lid is positioned to close the opening in the bag, as the pressure in the bag is reduced below atmospheric pressure periodically to crush and compact the refuse in the bag. The pressure is reduced by pumping air from the bag through a flexible hose that extends to the bottom of the bag to that any liquid collected in the bottom of the bag will be moved also.
    Type: Grant
    Filed: May 3, 1983
    Date of Patent: June 7, 1988
    Inventor: John O. Langdon
  • Patent number: 4738786
    Abstract: The present invention provides a filter apparatus having a filter vessel into which liquid to be filtered is inlet near the bottom of the vessel. The liquid rises in the vessel and is forced through a filter screen running the height of the vessel. After flowing through the filter screen, the filtered liquid enters an annular enclosure outside the filter screen. The filtered liquid rises in the enclosure to the height of a discharge outlet near the top of the enclosure wall. This assures the even depositing of solids filtered from the liquid along the entire height of the filter screen.
    Type: Grant
    Filed: June 12, 1986
    Date of Patent: April 19, 1988
    Assignee: AMSTED Industries Incorporated
    Inventor: Richard H. Wykoff
  • Patent number: 4730555
    Abstract: An extractor includes a cage which is delimited in the bottom part by a rotating perforated circular platen (1) surmounted by two vertical fixed perforated panels (6) on whose upper edge a cover (7) rests. The cover includes one or more hinged panels, and between which two thrust platens (8 and 9) slide. The thrust platens are displaced by cylinders (10 and 11). The rotating perforated circular platen (1) and the recovery tank (12) are each equipped with a trap (13 and 15). The traps are arranged in vertical alignment with one another and forming, in the open position, a hopper for discharging the residues towards a removal device (14). The process mainly consists in rotating the perforated circular platen (1) during charging and then through 90.degree. between two pressing phases so as to press the cake in two perpendicular directions. Typically, the apparatus is used for pressing grapes.
    Type: Grant
    Filed: October 23, 1986
    Date of Patent: March 15, 1988
    Assignee: Ateliers Coquard S.A.R.L.
    Inventor: Claude F. Blanchot
  • Patent number: 4718337
    Abstract: 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 the speed of the other stages. Compared with known screw presses, the advantage exists that following each treatment in a stage, by means of an opening in the transfer duct, the material can be measured, checked or subjected to an additional treatment. The number of stages can also be adapted to the material being processed and there is also a relatively large freedom with regards to the arrangement of the apparatus.
    Type: Grant
    Filed: June 28, 1985
    Date of Patent: January 12, 1988
    Assignee: Pharos Inventions Ag
    Inventor: Hans Wiederkehr
  • Patent number: 4712472
    Abstract: A running web which contains moisture is caused to travel through the nip of two squeezing rollers one of which is deformable in that it comprises a stationary carrier and a cylindrical shell which surrounds the carrier and also surrounds a first set of inflatable cushions adjacent the nip and a second set of inflatable cushions opposite the first set. Sensors monitor the moisture content of selected longitudinally extending portions of the web, and the signals which are generated by such sensors are processed by an evaluating circuit and are transmitted to valves which regulate the pressure of pneumatic fluid in the cushions. Each cushion of the second set registers with a cushion of the first set, and the registering cushions can receive fluid from associated sets of valves including a pressure regulating valve which can increase or reduce the pressure of fluid in the respective cushions and a second valve which can shift the admission of fluid from one into the other of the registering valves.
    Type: Grant
    Filed: September 30, 1986
    Date of Patent: December 15, 1987
    Assignee: Kleinewefers Textilmaschinen GmbH
    Inventors: Klaus Meisen, Peter Towes
  • Patent number: 4697511
    Abstract: In a dewatering machine for dewatering wet solids in which an elastomeric covered roll applies pressure upon one or more dewatering valves, the improvement whereby the elastomeric roll covering is a multi-layer covering having a graded hardness across the covering layer. A typical covered roll of such a machine is one in which a soft rubber-like material adheres to the surface of the roll and is covered by a harder outer covering.
    Type: Grant
    Filed: July 8, 1985
    Date of Patent: October 6, 1987
    Assignee: Envirotech Corporation
    Inventors: Steven S. Davis, Max A. Mueller, Kenneth F. Janecek
  • Patent number: 4691628
    Abstract: A method for operating a dewatering press wherein a mass for wet fibrous material is dewatered on all six sides by compressing the mass with a second ram against a plurality of liners arranged on a front face of the second ram, on a rear face of a door, and on a top wall, a bottom wall, and two opposing side walls of a press box. Before entering the press box, a quantity of the mass of wet fibrous material is selected by a first ram which is guided a predetermined distance beneath a hopper of wet fibrous material by a pair of piston rods and cylinders arranged on opposite external sides of the first ram. On one side edge of the front face of the second ram and also on one side wall of the press box, there are positioned four-edged knives which cut off a selected quantity of wet fibrous material after such material is fed into the compression chamber but before such material is pushed into the press box by the second ram.
    Type: Grant
    Filed: October 24, 1986
    Date of Patent: September 8, 1987
    Assignee: Harris Press and Shear, Inc.
    Inventor: Edwin K. Simpson
  • Patent number: 4683814
    Abstract: Apparatus and process for compressing moisture containing material including a pair of opposed rolls for receiving and advancing the material therebetween to apply rolling load thereto to compress the material and remove at least a portion of said moisture therefrom, and differential means for causing one of said rolls to rotate at a lower speed than the rolling speed of the other of the rolls, the differential rolling speeds developing friction between the rolls causing the rolls to be heated and apply heat to said material to further remove moisture therefrom, to cause the compressed material to adhere to the one roll and to cause the removed moisture to adhere to the other roll, also alone and in combination, apparatus and process of decomposing organic material such as an animal biomass by the action of aerobic microorganisms in the presence of oxygen, including introducing the organic material into a container having an end adapted to receive the organic material and an output end adapted to discharge th
    Type: Grant
    Filed: October 28, 1985
    Date of Patent: August 4, 1987
    Assignee: Revere Copper and Brass Incorporated
    Inventors: Charles J. Plovanich, Guy H. Ossont, Keith C. King, Robert H. Irwin, Walter V. Knoop
  • Patent number: 4676154
    Abstract: The press container of a wash press sits on a porous press plate. Because of the high press pressure of the press piston head the fabrics of the wash are partially forced into the holes of the press plate. In order to remove the pressed wash safely from the press plate, the pressed wash is raised somewhat from the press plate when the press container and press piston are simultaneously raised, first into a middle position in which the press piston head remains, while the press container is raised further. The wash loosened in this way can be safely slid laterally from the press plate.
    Type: Grant
    Filed: April 26, 1985
    Date of Patent: June 30, 1987
    Assignee: Senkingwerk GmbH
    Inventor: Hans Steinort
  • Patent number: 4672006
    Abstract: A system is described for processing an entire tree into wood fiber material for molding the constituent wood elements into custom molded wood products. A delimber removes limbs and leaves from the trunk, a debarker removes bark from the trunk of the delimbed tree, and a splitter separating sequence is constructed and arranged for separating the debarked trunk into elongate pieces of substantially equal cross-sectional area. A graduated roller mill having a sequence of pairs of compressor rollers with the rollers of each pair spaced successively closer together receives the elongate pieces of wood and extrudes and delivers thin sheets of wood at the output end. Liquid squeezed from the wood sheets is collected and separated into resins and water. A shredder shreds and fragments the wood sheet wood fibers into a loosely bonded mat of substantially separate striated wood fibers. The mat is cut or chopped into wood fibers of substantially uniform length.
    Type: Grant
    Filed: March 28, 1986
    Date of Patent: June 9, 1987
    Inventor: David W. McGraw
  • Patent number: 4665817
    Abstract: A press efficently dewaters a mass of wet fibrous material on all six sides by compressing the mass with a second ram against a plurality of liners arranged on a front face of the second ram, on a rear face of a door, and on a top wall, a bottom wall, and two opposing side walls of a press box. Before entering the press box, a quantity of the mass of wet fibrous material is selected by a first ram which is guided a predetermined distance beneath a hopper of wet fibrous material by a pair of piston rods and cylinders arranged on opposite external sides of the first ram. On one side edge of the front face of the second ram and also on one side wall of the press box, there are positioned four-edged knives which cut off a selected quantity of wet fibrous material after such material is fed into the compression chamber but before such material is pushed into the press box by the second ram. A method for operating the dewatering press is also disclosed.
    Type: Grant
    Filed: May 12, 1986
    Date of Patent: May 19, 1987
    Inventor: Edwin K. Simpson
  • Patent number: 4660608
    Abstract: Loading and solidifying of a cosmetic material is achieved by dripping a viscous cosmetic material into a container having a filter bottom, interposing a liquid absorbent membrance between the container and a presser, compressing the cosmetic material by the presser with the membrance interposed therebetween, and squeezing a solvent from the cosmetic material through the filter during such compression. A supporting block holds the container in position for it to be subjected to vacuum suction. The presser includes inner and outer pressing blocks and drives for moving the pressing blocks. The inner block is capable of fitting into the container to compress the cosmetic material, while the outer block abuts against the upper rim of the container.
    Type: Grant
    Filed: October 10, 1985
    Date of Patent: April 28, 1987
    Assignee: Yoshida Industry Co., Ltd.
    Inventor: Yasuo Arai
  • Patent number: 4658717
    Abstract: A refuse compaction unit comprises a refuse inlet, a compactor located below the refuse inlet and communicating therewith and an outlet communicating with the compactor on the opposite side thereof from the refuse inlet, the compactor being constituted of at least one comb-like rotor consisted of a plurality of outwardly projecting blades and at least one comb-like stator acting as a partition between the refuse inlet and refuse outlet and having a plurality of teeth with which the blades of the comb-like rotor interdigitate.
    Type: Grant
    Filed: October 28, 1985
    Date of Patent: April 21, 1987
    Assignee: Hakushin Kogyo Co., Ltd.
    Inventor: Hiroki Juhuku
  • Patent number: 4646633
    Abstract: The invention relates to a double piston and alternating action press apparatus. The device according to the present invention is constituted by the combination of a rapid advance feed piston and a second telescopic piston having a slow and stepwise advance. The device is adapted to exert an adjustable pressure on various products and more particularly, grapes, to extract the juice without grinding the grapes and seeds.
    Type: Grant
    Filed: May 1, 1985
    Date of Patent: March 3, 1987
    Inventor: Hubert Falguieres
  • Patent number: 4644861
    Abstract: An improved system and method for increasing the operational efficiency of screw-type presses which express or compress fluids from fibrous material. These improvements generally include improved means for compressing the fibrous material at its interface with both the hollow main shaft and the cylindrical outer housing of the press. Improved split worms having improved attaching means for each worm flight to the main shaft and collar therearound also contribute to improved efficiency. Further included is an improved means for draining the expressed fluids from the compression chamber radially inward into the hollow main shaft and radially outwardly through the outer housing wall of the compression chamber. In addition to improved radially outward drainage, improved wedge-shaped screen bars in the cylindrical outer housing walls eliminate the need for breaker bars which are otherwise necessary to reduce the spiraling effect of this fibrous material during compression.
    Type: Grant
    Filed: December 30, 1985
    Date of Patent: February 24, 1987
    Inventor: Peter W. Mansfield
  • Patent number: 4643088
    Abstract: A dual-cycle method of extracting juice from fruit and a juice extraction installation consisting of two angular presses in tandem arrangement in which the fruit mash yields first quality juice and pomace in the first press, and this pomace is immediately broken up and deposited on the horizontal run of the second press, under the addition of water which soaks and swells the pomace, before it passes through the second extraction press. The latter yields juice of second quality and twice-pressed pomace.
    Type: Grant
    Filed: December 31, 1984
    Date of Patent: February 17, 1987
    Inventor: Ulrich Kollmar
  • Patent number: 4555987
    Abstract: An apparatus for extraction of uncontaminated aloe vera gel from the leaves of aloe vera plants. The harvested leaves of the aloe vera plants are positioned between a pair of endless moving belts for passing by a plurality of crushing rollers arranged in a desired pattern. The rollers first crush the core of the leaf to enable the gel to flow internally while a second set of rollers extrudes the gel from the leaf. The crushed leaf and extruded gel is then deposited on a drain grate to enable gravity flow separation of the gel from the crushed leaves. The drainage grate is sloped in order that the leaves will slowly move across the drain grate to enable separation of the gel while removing the leaf from the gel collection area prior to the flowing of the contaminate aloin from the leaf.
    Type: Grant
    Filed: July 22, 1983
    Date of Patent: December 3, 1985
    Inventor: Larry N. Tumlinson
  • Patent number: 4543880
    Abstract: A method and device is disclosed for expelling liquid by squeezing of masses, having great liquid content and particularly highly re-absorbing masses, most particularly peat, said method comprising the steps of squeezing the mass between endless filter cloths running in a winding path around a plurality of press rollers acting on said filter cloths only and having progressively decreasing diameter and subjecting the mass to a more and more increasing squeeze pressure. According to the invention the filter cloths run from one press roller directly onto the subsequent roller in order to make the mass between said cloths subject to an uninterruptedly increasing squeeze pressure.
    Type: Grant
    Filed: November 23, 1983
    Date of Patent: October 1, 1985
    Inventor: Rolf Svensson
  • Patent number: 4488482
    Abstract: Disclosed are methods and apparatus for extracting gel from aloe vera leaves without contaminating the gel with toxic juices indigenous to the husks of the leaves. Further, this mechanized extraction is uniquely suited to permit frequent cleaning of the machinery. The leaves are washed, trimmed, and introduced into means for feeding the aloe vera leaves to and through a blade which longitudinally bisects the leaves. The split leaves are then passed through pressing rollers which advance the husks but retain the gel which falls from the pressing rollers into a collection pan. The pressed husks shed additional gel as they are carried over a further expanse of the collection pan and are then transferred to a husk collection conveyor which carries the husks back under the machinery. The pressing rollers are mounted to the frame of the apparatus by a hinged block which permits the pressing rollers to be swung open to permit cleaning of the pressing rollers and the blade.
    Type: Grant
    Filed: December 6, 1982
    Date of Patent: December 18, 1984
    Inventor: Thomas A. Cottrell
  • Patent number: 4479426
    Abstract: The invention relates to a method of closing, compressing and opening filter presses for membrane filters with a stationary upper yoke (7) and a lower yoke (6) movable on vertical press columns (2) and has for its object to improve the service and buildup of such membrane filter presses. This is achieved according to the invention by a method in which a loose lifting tool (10) is fitted under the movable yoke (6) and set in operation, whereby the yokes and the press plates situated therebetween are pressed against each other whereupon the movable yoke (6) is locked in the position taken and, upon opening of the press, is released whereupon the lifting tool is set out of operation and is removed.An apparatus for carrying out the method is characterized in that, between the movable yoke (6) and an abutment (4) there is an interspace (14) in which a lifting tool (10) can be placed and set in operation or out of operation.
    Type: Grant
    Filed: November 1, 1982
    Date of Patent: October 30, 1984
    Assignee: Alfa-Laval AB
    Inventor: Lars Olenfalk
  • Patent number: 4475453
    Abstract: A method and apparatuses for expressing the liquid phase from a wet mixture such as a clay-like mixture includes a primary roll (12, 104) with a plurality of smaller pressure rolls (13, 112-118) biased against its surface at circumferentially spaced intervals and at increasing pressures. The primary roll and at least the upstream one (112) of the pressure rolls have a thick outer covering of a substantially deformable elastomeric material. A pair of opposed filter belts (22, 23 or 142, 144) are trained about the primary roll and means are provided to feed the wet mixture between the belts to carry the mixture successively through the nips between the primary roll and the pressure rolls. The mixture is initially subjected in the first nip to a relatively gradual rate of increase in pressure and in subsequent nips is subjected to progressively steeper rates of increase in pressure adapted to the different flow behavior of the mixture caused by the increasing solids content of the mixture.
    Type: Grant
    Filed: January 26, 1982
    Date of Patent: October 9, 1984
    Assignee: Envirotech Corporation
    Inventor: Steven Davis
  • Patent number: 4467713
    Abstract: A method of and an apparatus for recovering oil, especially edible oils, from oil-containing fruit and seed in which immediately upon cleaning the fruit and seed, this oil-bearing material is subjected to cold pressing without prior heat treatment to recover a portion of the oil and the residue is thereupon extracted.
    Type: Grant
    Filed: April 1, 1982
    Date of Patent: August 28, 1984
    Assignee: Fried. Krupp Gesellschaft mit beschrankter Haftung
    Inventors: Manfred Knuth, Thorsten Homann