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| Number | Title | Issue Date |
| 7413084 | Method and system for separating particulate matter The present invention is directed to a system and method for continuously or substantially continuously separating particulate matter based on particle size and/or density of the matter. The system includes a separation chamber having a bottom portion disposed withi... | 08/19/2008 |
| 6910585 | Dynamic centrifugal gas classifier and method of classifying performed therewith An apparatus and process for classifying fine particles from a particulate material, such as toner and pigment powders. The apparatus is generally a dynamic centrifugal gas (air) classifier that combines the operational advantages of centrifugal air classifiers with... | 06/28/2005 |
| 6568536 | Classifier and method for preparing toner A classifier is proposed which includes a dispersion chamber for dispersing a powder material therein, a classification chamber connected to the dispersion chamber, and a conical member disposed between the dispersion chamber and the classification chambe... | 05/27/2003 |
| 6527141 | Dispensing measured quantities of materials for mixing into a larger batch An apparatus for dispensing measured quantities of particulate material includes a tubular duct arranged so that an air stream in the duct carries material along the duct and a row of hoppers each for containing the material to be dispensed; the hoppers b... | 03/04/2003 |
| 6110242 | Apparatus for separating solids from a gas An apparatus for separating solids, such as scrap material, from a gas such as an air stream. The apparatus includes a horizontally mounted outer cylinder or drum and an inner perforated cylindrical member is mounted concentrically within the drum to prov... | 08/29/2000 |
| 6032804 | Cyclonic dust collector A method and apparatus for collecting and removing dust from dust laden air has a housing defining a chamber having an inlet for the dust laden air, a first outlet for dust free air and a second outlet for the collected dust, the inlet and second outlet b... | 03/07/2000 |
| 5934476 | Vacuum rotary filtration apparatus A rotor assembly includes a shaft and a plurality of radially outwardly extending vanes surrounded by a circular cylinder. A truncated conical segment screen is in each compartment formed by the vanes dividing each compartment into inner and outer subcomp... | 08/10/1999 |
| 5931305 | Powder classifier The present invention provides a powder classifier using a classification rotor capable of classifying powder with high efficiency and high accuracy. The classification rotor is attached to a rotating shaft as a body and rotatably supported in a casing. W... | 08/03/1999 |
| 5845782 | Separator for removing fine particulates from an air stream The invention provides a separator for removing small particulates from an air stream, the separator includes pneumatic separator with a relatively small filter element built inside the separator to remove particulates from the air stream down to as small... | 12/08/1998 |
| 5791490 | Separator for particulate materials The invention relates to a separator comprising a separator housing with an inlet spiral for separating air which opens tangentially into an annular separating chamber and is divided into a plurality of delivery channels which lie one above the other, as ... | 08/11/1998 |
| 5511668 | Pneumatic sifter A pneumatic sifter includes a feeder for supplying sift material, optionally with sifting air, to a rotationally symmetrical sifting chamber which surrounds a centrally disposed air outlet chamber, and a coarse particle discharge. In order to keep the flo... | 04/30/1996 |
| 5377843 | Classifying wheel for centrifugal-wheel air classifier A classifying wheel for a centrifugal-wheel air classifier, through which the classifying air flows from outside to the inside against its centrifugal action. The wheel has blades arranged in a ring extending parallel to the axis of rotation of the wheel.... | 01/03/1995 |
| 5305889 | Center feed cyclone The present invention is directed to an improved method and apparatus to separate solids particles from a liquid medium and/or classify suspensions of particles according to particle characteristics by centrifugal force, wherein the feed stream is introdu... | 04/26/1994 |
| 5292005 | Apparatus for roasting coffee beans or the like An apparatus for roasting coffee beans or the like includes a controlled spinning bed or fluid bed roaster in combination with a cyclone separator for removing chaff from the heating medium. The cyclone separator is disposed above and in coaxial and abutt... | 03/08/1994 |
| 5232096 | Material dispersion apparatus The invention relates to a material dispersion apparatus, particularly for spreading classifiers, with an upper material supply and a material feed surface. The material feed surface is constructed as a sieve-like surface, which is installed in an air cha... | 08/03/1993 |
| 5158182 | Sifter A rotary sifter for separating different fractions of particulate material having a cylindrical outer housing and three rotary cages with vertical bars through which material and air pass inwardly with the cages independently rotary mounted, and channels ... | 10/27/1992 |
| 5120431 | Pneumatic centrifugal separator A pneumatic centrifugal separator comprises guide vanes disposed along the generatrices of a fictitious cylinder having a vertical axis, the guide vanes being adapted to impart to a gas stream entering the fictitious cylinder a rotary motion about the ver... | 06/09/1992 |
| 5055182 | Separator The invention relates to a pneumatic separator for separating relatively coarse and relatively fine particles and in which a material distributor plate is arranged below the rotor and guide unit in such a way that the material thrown off by the rotor pass... | 10/08/1991 |
| 5024754 | Separator The invention relates to a separator with a rotor and a material distributor which are driven separately. Such a separator is particularly suitable for grinding plants which are equipped with a high-pressure grinding roll mill. The scabs discharged from s... | 06/18/1991 |
| 4939081 | Cell-separation A method and apparatus for separating particles by means of a contra-flow centrifuge, wherein a monitor system is used to analyze or control the separation process. The monitor system used impinges a monochromatic light beam on a sample of the separated p... | 07/03/1990 |
| 4869786 | Air classifying process and air classifier The invention relates to a process and to an air classifier for the separation of classifying material into coarse material and fine material. Known air classifiers suffer from considerable deficiencies with regards to the throughput and the separation ef... | 09/26/1989 |
| 4818376 | Leakage prevention apparatus for a classifier In a classifier including a rotary disc provided on a lower end of a vertical rotary shaft depending from the top of a hopper-type casing, a horizontal dispersing disc is provided directly below the top of the casing, a circular collision plate is spaced ... | 04/04/1989 |
| 4793917 | Centrifugal classifier for superfine powders A characteristic feature of the design are the rounded off peripheral portions of surfaces of discs which face each other and are spaced equidistantly apart, the discs being rigidly attached to a power-driven rotor.... | 12/27/1988 |
| 4792393 | Spiral air sifter having air regulation The invention relates to a sifter in which the spiral for delivery of the air for sifting is divided into a plurality of channels lying one above another in which elements for setting the quantity of sifting air delivered to the individual channels are pr... | 12/20/1988 |
| 4756428 | Method and turbo-separator for dispersion air separation, particularly of cement A method and mechanism for the separation of materials from a stream of pulverulent material such as cement including a rotatable plate onto which the material is fed with the material being centrifugally discharged in a bell shaped flow pattern, a radial... | 07/12/1988 |
| 4742919 | Rotating separator Fines are separated from pin chips and a system in which a mixture of fines and pin chips is introduced onto a rotating disk which imparts centrifugal forces thereto for separation. In a first embodiment, the fines and the pin chips are propelled over dif... | 05/10/1988 |
| 4743363 | Classifying cyclone A classifying cyclone efficient at removing very fine particles. In preferred embodiments, the cyclone employs an annular bevel ring positioned along the interior wall to redirect separated particles from the wall back into the path of classifying air. A ... | 05/10/1988 |
| 4713096 | Apparatus for separating granular solids from carrying gas An apparatus for separating granular solids from the carrying gas thereof by the use of a swirl stream of a mixture gas in a certain chamber, characterized in that: in addition to said mixture gas to be separated in its treatment, another gas is separatel... | 12/15/1987 |
| 4693811 | Sifter The invention relates to a sifter having a dispersing plate which has material passage openings therein. The dispersing plate carries guide elements and distributor elements adjacent such openings which are inclined with respect to the radius of the plate... | 09/15/1987 |
| 4689141 | Separator for sorting particulate material, with a plurality of separately adjustable guide vane sets A separator for sorting particulate material has a rotor (1) with vanes (3); static, separately adjustable guide vanes (8,9); a casing (14) defining an inlet duct for material suspended in a conveying gas; an outlet (7) for a suspended fine fraction; and ... | 08/25/1987 |
| 4689140 | Separator for sorting particulate material A separator has a rotor (1) with top and bottom plates (2,3). An annular collecting casing (10) is secured to the top plate and is positioned at a radial distance from the material inlets (13). The casing has a concave side which faces the top plate (2) f... | 08/25/1987 |
| 4680107 | Device for separation of the components of edible meals The separator device comprises a vertical, cylindrical container (4), provided at the bottom with a rotary discharge valve (9) and provided with a duct (5) which opens into its top portion and is connected to the feeding source of the meal. This duct (5) ... | 07/14/1987 |
| 4661244 | Rotary basket air classifier The invention relates to a rotary basket air classifier. A favorable predispersion of the material to be classified, particularly in the case of an upwardly directed spent classifying air line has always been problemmatical with such classifiers. Accordin... | 04/28/1987 |
| 4636302 | Separator A separator has a rotor (1) with radial vanes (12) between plates (8,11). Material to be sorted is supplied, entrained in a conveying gas, through an inlet duct (6) to some rotor vane interspaces through inlet openings (13). The flow is then radially outw... | 01/13/1987 |
| 4604192 | Powder classifier In a powder classifier of the kind having a turbine-like horizontally rotating classifying rotor which is arranged to have air diametrically flow into radial passages and to cause the coarse powder portion of a powder material supplied to the inside of th... | 08/05/1986 |
| 4599163 | Device for the separation of the components of edible meal Separator device for edible meal, comprising a vertical cylindrical container (4) provided at its the bottom with a discharge rotary valve (9). A feeding duct (5) extends axially into the top portion of the container, and swirling means are provided so th... | 07/08/1986 |
| 4560471 | Powder classifier A powder classifier having two stages of classification blades which are arranged to intersect the radial directions of the powder classifier.... | 12/24/1985 |
| 4526678 | Apparatus and method for separating large from small particles suspended in a gas stream The present invention is directed to apparatus and a process for separating large from small particles suspended in a moving stream of gas by centrifugal forces which in a preferred embodiment includes sifting of large particles in a stream of gas to stri... | 07/02/1985 |
| 4515686 | Method for the operation of an air separator, and an air separator for the practice of the method An air separator method and apparatus provides a second, preferably downward air stream about and rotating in the same sense as a first, upward air stream to carry away coarser feedstock material siezed from a supply and centrifugally separated from finer... | 05/07/1985 |
| 4432849 | Method and apparatus for separating macromolecules or particles in a liquid solution A solution of macromolecules or other particles suspended therein is subjected to a centrifugal force applied in one direction and simultaneously to a force imposed in a direction opposite to said one direction by an electric field applied, thereby separa... | 02/21/1984 |
