Famous Patents
In 1608, Dutch eyeglass maker Hans Lipperhey filed the first patent for a working telescope. The patent was denied.
PatentStorm News
Make the Most of Our Site
See this month's Top Inventors and Most Cited Patents.
Stay on top of the latest innovations by subscribing to an RSS feed.
Registered users: Manage your profile.
| Number | Title | Issue Date |
| 7404492 | Separation of fibre pulp suspensions containing relatively heavy contaminants A hydrocyclone unit for separating a fibre pulp suspension containing relatively heavy contaminants has an elongate tapering separation chamber, an inlet member that feeds the suspension tangentially into the separation chamber at a base end, so as to form a vortex ... | 07/29/2008 |
| 7306730 | Cyclone-type separator for separating foreign matters by utilizing a centrifugal force A cyclone-type separator comprises a hollow cylindrical main body in to which liquid containing foreign matter is introduced, a clean room provided in an upper end of the main body, a communication pipe which connects the clean room to an interior of the main body, ... | 12/11/2007 |
| 7267232 | Flotation device and method of froth flotation An apparatus for froth flotation including a flotation vessel including a side wall and a bottom wall that includes a fluid drain, and a mixing eductor inside the vessel disposed to impart net rotational force to contents of the vessel about an axis; and a method of... | 09/11/2007 |
| 7231927 | Method for recycling used-up plastic products and washing process of crushed plastic and apparatus therefor An object of the invention is to provide a method and an apparatus for recycling plastics which is improved with respect to operation efficiency, operation environment, lowering degradation of plastics, recycling cost and environment load including saving energy. Th... | 06/19/2007 |
| 7108136 | Pneumatic flotation separation device A separating device (10) especially for use in a pneumatic flotation system comprises an annular channel (18), at least one nozzle (16) for introducing aerated pulp substantially horizontally and tangentially into the annular channel (18)... | 09/19/2006 |
| 7090082 | Method and device for separating materials A method for separating materials, in which a mixture of materials is guided through a channel in a direction of flow that extends at least approximately parallel to the gravitational field. Utilizing a wash fluid conveyed through the channel in a direction transver... | 08/15/2006 |
| 7028848 | Feeding method and apparatus for dynamic separators The invention relates to an axial feeding method of the material to be separated in a dense-medium dynamic separator (1). This method is based on the principle of imparting to the material and to the fluid in which it is dispersed, in order to facilitate intr... | 04/18/2006 |
| 6848582 | Longitudinal micrometric separator for classifying solid particulate materials A longitudinal micrometric separator for the classification of solid particulate materials comprising an outer casing having an inflow opening and an outflow opening for the particulate material, a collection chamber at the bottom, as well as a sliding support for t... | 02/01/2005 |
| 6840383 | Particle separating apparatus A particle separating apparatus is provided with a stock solution feeder (1) for supplying a stock solution containing particles, a bubble generator (2) for generating air bubbles to promote the separation of particles, a first separator (3) for... | 01/11/2005 |
| 6638433 | System and method for controlling water-only cyclones A system for controlling the operation and performance of water-only cyclones used in coal preparation plants for separating a fine raw coal slurry into fine coal and fine refuse slurries includes a variable speed pump for feeding the slurry from an under... | 10/28/2003 |
| 6450344 | Particle separating apparatus A particle separating apparatus is provided with a stock solution feeder (1) for supplying a stock solution containing particles, a bubble generator (2) for generating air bubbles to promote the separation of particles, a first separator (3) for separatin... | 09/17/2002 |
| 6426010 | Device and method for separating a heterogeneous mixture The invention concerns a device for separating the constituents of a heterogeneous mixture and its uses. Said device comprises a separation chamber (100, 250, 350, 450, 650, 724, 850, 903, 1106) having a one of its ends an inlet and at the other an outlet... | 07/30/2002 |
| 6119870 | Cycloseparator for removal of coarse solids from conditioned oil sand slurries A large capacity cyclonic separator is used for desanding a conditioned aqueous oil sand slurry comprising aerated bitumen, water and sand to produce pumpable, pipelineable lean froth and sand tailings. The cyclone separator is a vessel which forms an elo... | 09/19/2000 |
| 5916446 | Process and apparatus for the separation of solid matter via flotation Process and apparatus for the separation of solid matter via flotation. The flotation process for the separation of solid matter from a suspension takes place via the utilization of centrifugal forces wherein the suspension is brought into rotation in a s... | 06/29/1999 |
| 5855769 | Apparatus and method for selective separation of hydrophobic material Hydrophobic material is selectively separated from an aqueous feed by forming gas bubbles in a flow of the feed, forming hydrophobic material/gas bubbles aggregates by motionless mixing and separating the aggregates as a froth by use of centrifugal action... | 01/05/1999 |
| 5728262 | Method and apparatus for removing neutral buoyancy contaminants from acellulosic pulp An asymmetric hydrocyclone is modified and controlled so as to effectively remove contaminants of substantially neutral buoyancy from a paper cellulosic pulp. More specifically, a method includes prepositioning a substantially frusto-conically-shaped sepa... | 03/17/1998 |
| 5690812 | Process and apparatus for the separation of solid matter via flotation Process and apparatus for the separation of solid matter via flotation. The flotation process for the separation of solid matter from a suspension takes place via the utilization of centrifugal forces wherein the suspension is brought into rotation in a s... | 11/25/1997 |
| 5662790 | Air contactor with foam separation vessel system A deinking system for use with recycled paper pulp includes a number of gas sparged hydrocyclones mounted around the outer periphery of a foam separation vessel, with the slurry outlet from each hydrocyclone introducing slurry into the vessel below the le... | 09/02/1997 |
| 5651879 | Cell for treating a liquid medium by means of flotation The cell 1 includes an upper cylindrical chamber 2 comprising at its center over its entire height a vertical ink removal pipe 4. A lower lateral pipe 9 receives via an opening 10 a paper pulp feed diluted in water and is fed with air from an upper pipe 1... | 07/29/1997 |
| 5560818 | Adjustable orifice for gas-sparged hydrocyclone A conventional gas-sparged hydrocyclone, including a plug that cooperates with an interior surface of the hydrocyclone to adjust the size of an orifice defined adjacent the suspension outlet, is mechanically adjusted. The plug position is adjusted by a me... | 10/01/1996 |
| 5529190 | Gas sparged hydrocyclone with foam separating vessel A slurry of recycled cellulose fibers is deinked by introducing the slurry into the first end of a vortex, sparging gas radially inwardly into the slurry to cause gas bubbles to attach to contaminants and ink particles to form an aerated slurry, dischargi... | 06/25/1996 |
| 5518616 | Plant for the separation at high temperature of contaminants of various types from plastic material in small pieces or leaves A plant for the separation at high temperatures of contaminants from plastic material in small pieces or in leaves, including at least one stage (2) for the separation of contaminants, which in turn includes a centrifugal separator device designed to sepa... | 05/21/1996 |
| 5470465 | Vortex system for separating particles from a liquid stream A vortex system for separating particles of varied size and density from a liquid stream. A particle bearing liquid is introduced tangentially into one end of an elongated cylindrical chamber to form a rotating liquid vortex therein. An impeller at one en... | 11/28/1995 |
| 5458738 | Clarifying suspended solids from liquid process streams Liquid process streams--such as white water, pressate, or washer filtrate from a pulp and paper mill--are clarified in an efficient manner using a gas sparged hydrocyclone, which takes up a minimum of floor space. A liquid stream having a consistency of l... | 10/17/1995 |
| 5451318 | Solids separator boundary layer effect filtration system A filtration system for water or other selected liquids that includes an ozone mixing station, a primary solids and gas separator and, if desired, a second vortex particle separator and filter system. The ozone mixing station includes a high efficiency oz... | 09/19/1995 |
| 5280836 | Process for beneficiating particulate solids The present invention is further directed towards a method for determining the efficiency of separation of a dense media separation process. This method includes determining an apparent distance a particle must travel in a dense media cyclone to be correc... | 01/25/1994 |
| 5277368 | Coal cleaning process Fine particle coal is beneficiated in specially designed dense medium cyclones to improve particle acceleration and enhance separation efficiency. Raw coal feed is first sized to remove fine coal particles. The coarse fraction is then separated into clean... | 01/11/1994 |
| 5273647 | Negative pressure hydrocyclone separation method and apparatus The improved hydrocyclone separating method and apparatus provides negative pressure to feed the hydrocyclone and an artificial air core into hydrocyclone. Use of the negative feeding pressure allows reduction of the cyclone pressure drop and energy consu... | 12/28/1993 |
| 5173177 | Anti-plugging adjustable orifice for gas sparged hydrocyclone In a hydrocyclone, particularly for deinking of paper pulp, a movable generally cylindrical plug is utilized to define an annular space near the accepts withdrawal conduit to effect release of obstructions should the annular space become clogged. The plug... | 12/22/1992 |
| 5116488 | Gas sparged centrifugal device A hydrocyclone establishes a first vortex of fluent material at one end (e.g. in a top portion), and a second vortex at the other end (e.g. in a bottom portion). The first vortex is established within a porous surface of revolution to which gas or other f... | 05/26/1992 |
| 5108608 | Cyclone separator with multiple outlets and recycling line means A hydrocyclone separator for separating oil and water components of a fluid mixture to provide a more dense water component that is substantially free of oil, having three outlets at the end of the hydrocyclone opposite the inlet end. One of the outlets r... | 04/28/1992 |
| 4960525 | Hydrocyclone for washing particles in liquid suspension An apparatus and method for separating particulate solids from a liquid suspension relies upon a hydrocyclone having two radially and vertically spaced inlets in the upper portion thereof for establishing throughout the hydrocyclone concentric flow patter... | 10/02/1990 |
| 4927298 | Cyclone separating method and apparatus The improved cyclone separating method and apparatus provide an artificial air core into the cyclone to ensure the steady and high separation efficiency independent of increasing the feed flow rate or the feed solids concentration. Use of the artificial a... | 05/22/1990 |
| 4676809 | Hydrocyclone plant In a hydrocyclone plant for separating a fiber pulp suspension into a light phase and a heavy phase, comprising at least two hydrocyclones (1, 2) connected in series, there is provided a device (20) arranged both for degassing a first stream of separated ... | 06/30/1987 |
| 4406781 | Process for the separation of mineral substances Provided is a process and apparatus for the separation of solid mineral substances. Particular applicability is found in the separation of resins from resin-bearing coal material. The resins are effectively separated by treating the resin-bearing coal wit... | 09/27/1983 |
| 4399027 | Flotation apparatus and method for achieving flotation in a centrifugal field A gas-sparged hydrocyclone apparatus and method for achieving separation by flotation in a centrifugal field. The hydrocyclone apparatus is suitably modified so that a gas phase may be dispersed into the liquid vortex created in the hydrocyclone.... | 08/16/1983 |
| 4397741 | Apparatus and method for separating particles from a fluid suspension An apparatus and method for separating particles from a fluid, particulate suspension by flotation in a centrifugal field. The apparatus includes a vertically oriented, cylindrical vessel having a tangential inlet and a tangential outlet. The particulate ... | 08/09/1983 |
| 4301000 | Method and apparatus for fractionation and recovery of limestone grits in kraft pulping process The limestone grits, formerly considered a waste product of the lime slaking process, become economically salvageable after successful fractionation to separate them into three parts: (1) caustic chemicals useful in the kraft pulping process; (2) under-, ... | 11/17/1981 |
| 4279743 | Air-sparged hydrocyclone and method An air-sparged hydrocyclone apparatus and method, the apparatus including a substantially hollow, cyclone body having a cylindrical section and a downwardly oriented conical section. An inlet, an overflow and an underflow are also provided in the cyclone ... | 07/21/1981 |
| 4226726 | Desilter An improved desilter for drilling muds consists of one or more hydrocyclones with certain features providing for better separation of large particles from the mud. Drilling muds used in drilling oil wells and the like give substantially improved performan... | 10/07/1980 |
