Mark Twain (Samuel L. Clemens) received Patent No. 121,992 for "An Improvement in Adjustable and Detachable Straps for Garments." He later received two more patents: one for a self-pasting scrapbook and one for a game to help players remember important historical dates.
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| Number | Title | Issue Date |
| 7987992 | Coke separation process in paste plant The invention describes a process and apparatus producing a dense coke fraction from a first particulate coke fraction having a first average density and a first average particle size distribution, stratifying the coke fraction in a density separator into at least t... | 08/02/2011 |
| 7422114 | Vibratory material separator having an adjustable air knife and a separation tube A vibratory material separating apparatus has at least two plateau conveying surfaces interrupted by a drop out opening. A composite mixture is conveyed by a vibrating action beyond the first conveying plateau and over a foraminous section in the first conveying pla... | 09/09/2008 |
| 7275644 | Apparatus and method of separating and concentrating organic and/or non-organic material An apparatus for segregating particulate by density and/or size including a fluidizing bed having a particulate receiving inlet for receiving particulate to be fluidized. The fluidized bed also includes an opening for receiving a first fluidizing stream, an exit for... | 10/02/2007 |
| 7172143 | Method and plant for separating polymeric materials A method for recycling polymeric materials, including a mechanical separation step (B), a first density separation step (C), an intensive cleaning step (E), and a second density separation step (G, V) is described. Additional separation steps, such as a third densit... | 02/06/2007 |
| 7131538 | Material classifier having a scoop wheel A material classifier for classifying a liquid-solid mixture containing solid material to be separated. The material classifier includes a tank and an angularly mounted scoop wheel for scooping solid material which has settled on the bottom of the tank. ... | 11/07/2006 |
| 7014132 | Method and plant for separating polymeric materials A method for recycling polymeric materials, including a mechanical separation step (B), a first density separation step (C), an intensive cleaning step (E), and a second density separation step (G, V) is described. Additional separation steps, such as a third densit... | 03/21/2006 |
| 6907996 | Application of complex-mode vibration-fluidized beds to the separation of granular materials of different density Opposite ends of a dry vibration-fluidized separator are moved with complex vibrations, including linear, whirl, linear plus whirl, oscillation, linear plus oscillation, pitch and roll. Near zero to large amplitudes up to about ±0.050 inches and low frequencies of ... | 06/21/2005 |
| 6905715 | Cocoa solids having a high cocoa procyanidin content The present invention is directed to a method of processing a fat-containing bean, e.g., cocoa beans, for producing solids comprising active polyphenols and/or fat-containing products, comprising extracting the fat to produce solids and fat-containing products. Addi... | 06/14/2005 |
| 6889842 | Apparatus and method for dry beneficiation of coal A method of beneficiating coal in a dry process includes separating raw coal from a coal mine into coal fines and larger pieces of coal using pressurized air, separating the larger pieces of coal according to size, removing ash from the larger pieces of coal on an a... | 05/10/2005 |
| 6398035 | Maximizer for gravity separators A gravity separator with improved efficiency comprising a gravity table with pins at the feed area and a flow channeler. The pins create space in the bed of material to be separated which increases stratification of the weight fractions. The flow channele... | 06/04/2002 |
| 5887724 | Methods of treating bi-modal fly ash to remove carbon A method of reducing the carbon content of a dry bi-modal fly ash includes subjecting the bi-modal fly ash to dry vibrating screen separation into a carbon rich component and a carbon depleted fly ash component with the carbon depleted fly ash component b... | 03/30/1999 |
| 5437373 | Aeraulic separator, particularly for sorting waste An aeraulic separator for automatically separating materials into three batches of different weights or shapes having a chamber under a slight depression with an inlet opening, two perforated inclined planes with an inclination of angle and ³... | 08/01/1995 |
| 5280837 | Door for an improved separation device A door (20) for a separation table (10) is pivotably installed within discharge chute (12). The door is pivotable between a closed position and an open position. The door has a distal planar section (24) that lies horizontally against the floor wall (38) ... | 01/25/1994 |
| 5244099 | Apparatus and method for improving density uniformity of a fluidized bed medium, and/or for improved material fluidized bed sorting An apparatus for providing a fluidized bed to effect the separation of a mixture of articles having at least a first density and a second density that is greater than the first density into separate groups. The apparatus includes an inclined trough which ... | 09/14/1993 |
| 5148921 | Pneumatic separation of particulate material The invention relates to apparatus for the pneumatic separation of particulate material particularly but not solely for the separation of objectionable material such as stem from cut lamina or cut rolled stem tobacco (CRS). Apparatus for the pneumatic sep... | 09/22/1992 |
| 5035089 | Blast media recovery and cleaning system A blast media recovery system is provided that recycles reusable blasting media from spent blasting materials. The system includes several different separators which classify the recovered materials by either specific gravity or size. After the materials ... | 07/30/1991 |
| 4913804 | Device and process for separating granular material The device consists of two fluidized bed tables (2, 3) which can vibrate on their support, an can be inclined as desired, allowing a common airflow to pass through. Located over the top end of the upper fluidized bed (2) is an inlet (1) for the granular m... | 04/03/1990 |
| 4908124 | Method and apparatus for removing foreign objects from fluid bed systems A foreign object removal system is disclosed including a removal chamber projecting laterally from the combustion chamber of a fluid bed reactor and connected via a downwardly directed pipe to a material flow control plenum chamber, which includes means f... | 03/13/1990 |
| 4857177 | Dry separation of solids Mixed scrap metal pieces 6 are sorted in a fluidised hindered settler containing sand, through which the pieces settle at a differential rate. The sand is fluidised by air from 20 and vibration-driven around a circular trough 2. A depthwise partition 14a ... | 08/15/1989 |
| 4804463 | Gravity separator The present invention is a gravity separator for classifying particulate matter as to weight. The invention herein uses a screened vibrating deck having a flow of air therethrough for separating the particulate matter placed thereon. The air flow is provi... | 02/14/1989 |
| 4755284 | Elutriator An elutriator (1) for separating different grades of leaf vegetable material comprises an elutriation zone (17) disposed above a flow distributor, and gaseous supply means (13) for supplying a gaseous medium to the elutriation zone (17) through the flow d... | 07/05/1988 |
| 4673491 | Process and apparatus for the centrifugal separation of fine-grain mineral mixtures Separating elements (14) arranged about a central shaft (1a) rotate in common about the main axis (A) and individually about their longitudinal axes (B). A centrifugal distributor (6) distributes fine-grain mineral mixture mixed with fluid uniformly to th... | 06/16/1987 |
| 4652362 | Apparatus and method for separating heavy material, more particularly stones or the like, from cereals and other bulk materials In an apparatus for separating heavy material, more particularly stones, from cereals and other bulk goods, two superposed inclined vibrating tables (1, 2) are provided which have the same air flowing through them and a common drive (30), a product inlet ... | 03/24/1987 |
| 4636305 | Apparatus for cleaning grits In the case of an apparatus for cleaning grits, which has a plurality of superimposed screen layers, which can be vibrated by means of at least one unbalance exciter and with an inlet or outlet for the product inlet or screen discharge arranged at one end... | 01/13/1987 |
| 4615797 | Dry washer with hot air supply The electrostatic recovery of gold in the drywasher is improved by providing means to scavenge the waste heat from the internal combustion engine that powers the air blower. This preheats the intake air to the air blower, whereby the equilibrium temperatu... | 10/07/1986 |
| 4574046 | Centrifugal jig for ore beneficiation A centrifugal jig to beneficiate ore by separating a heavier particulate fraction from a lighter particulate pulp. The jig provides a rotor with a vertical cylindrical jig screen rotating in a fluid filled hutch to support a vertical jigging bed. The jigg... | 03/04/1986 |
| 4549698 | Method of reclaiming foundry sand A method and apparatus for reclaiming used foundry sands including organic resin-bonded sands and clay-bonded sands is shown. The method includes passing used sand downward through a series of vertical, fluid sand beds. Hot air is forced upward in counter... | 10/29/1985 |
| 4411038 | Pneumatic cleaning system A pneumatic cleaning system for particulate bulk material such as raisins, seeds, nuts, and the like, the system having a reciprocating screen onto which the material is delivered in a layer for travel across the screen; a top hood and a bottom hood mount... | 10/25/1983 |
| 4294693 | Air flotation ore enriching apparatus Virgin ore in granular form is enriched by air flotation classification separating at least a large part of the gangue. Suspension of the ore is effected immediately as supplied to the inlet section of the classification trough by copious upward flow of a... | 10/13/1981 |
| 4279740 | Light-material segregating method and apparatus An apparatus and method for separating light and heavy materials from one another. Materials to be separated are transported on a conveyer belt past a set of overhead rollers. Air is sucked through gaps between the rollers with covers surrounding groups o... | 07/21/1981 |
| 4169533 | Method of treating sponge iron A method of reducing the temperature of sponge iron to a safe level for storage and shipment including the steps of transferring freshly prepared sponge iron in particulate form to a separator vessel, such sponge iron being at dangerously high temperature... | 10/02/1979 |
| 4115256 | Apparatus and method for particle separation and grading Apparatus and method for separating fly ash into its major constituents; namely, metal, carbon black, cenospheres and dust. The metal is separated by passing the fly ash through a magnetic field at least a part of which has an alternating polarity. The no... | 09/19/1978 |
| 4035288 | Fluidized bed seed separator A bed of fluidized material is used to separate seeds on the basis of specific gravity. The bed may be a rotating annulus and it may have one or more layers of micro-balls at the bottom. Means for rotating the annulus and various discharge means are discl... | 07/12/1977 |