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| Number | Title | Issue Date |
| 8146749 | Plan sifter and drive for a plan sifter A plan sifter for sifting or sieving, flour-like or granular products, includes at least one compartment. Each sifting compartment has a dedicated drive, so that the base surface available can be better utilized, and the sifting capacity can be better adjusted to ac... | 04/03/2012 |
| 8141714 | Linear motors for shaker motion control Embodiments relate to a vibratory screen separator and methods for using a vibratory screen separator. The vibratory screen separator may have a stationary base, a movable basket, and at least one linear motor for imparting motion to the movable basket, and methods ... | 03/27/2012 |
| 7802687 | Coating powder sieving device The invention relates to a coating powder sieving device, specifically for a powder paint coating installation, having a screen surface for sieving a coating powder. The screen surface is angular. An ultrasonic probe excites vibrations in the screen surface wherein ... | 09/28/2010 |
| 7182206 | Screen energizer A screening system including a vibratory screen separator having a resiliently mounted frame with a low frequency vibratory drive coupled to that frame. A taut screen is rigidly mounted in the frame and a vibration transmitter assembly is resiliently mounted to the ... | 02/27/2007 |
| 7104394 | Conveying apparatus with piezoelectric driver A conveying apparatus comprises an elongated conveying bed which includes a proximal end and a distal end. A support structure for the conveying bed accommodates vibratory motion of a portion of the conveying bed extending from the proximal end a substantial distanc... | 09/12/2006 |
| 6953122 | Smart screening machine A screening machine that includes a screen having a periphery and a central porous region is provided. A motion amplifier is substantially rigidly attached in direct contact with the periphery of the screen and not in direct contact with the central porous region. A... | 10/11/2005 |
| 6938778 | Smart screening machine A screening machine having a base is provided. A screen is coupled to the base to separate material by size. The screening machine includes a vibration motor having piezoelectric elements and a vibration amplifier located between the piezoelectric elements and the s... | 09/06/2005 |
| 6889845 | Jigging machine A jigger for the processing of minerals such as coal, consisting of two traveling troughs, the upper trough being equipped with a sieve and closed from below by a continuous flexible membrane, the lower trough interrelating with the diaphragm of the upper trough, ac... | 05/10/2005 |
| 6886972 | Food processor comprising a sifter device In a food processor (1) with a drivable apparatus part (17) provided for interacting with a material which is to be processed and with driving means (9) for driving the drivable apparatus part (17), said driving means (9) comprisin... | 05/03/2005 |
| 6845868 | Multifrequency vibratory separator system, a vibratory separator including same, and a method of vibratory separation of solids A vibratory separator for sorting solids including a housing (12) with an inlet (22) for feeding material, a first oulet (24) for discharging undersized particles, and a second oulet (26) for discharging oversized particles; and one or mo... | 01/25/2005 |
| 6814242 | Rotatively oscillating separator A rotatively oscillating separator comprising separating vessels 4 each having cone-shaped separating plate 5 disposed in the vessel, and drive means 6 for rotatively oscillating said separating vessels 4, mixed rice consisting of unhulle... | 11/09/2004 |
| 6763948 | Screening machine with acceleration modification A screening machine of the type used to separate or classify mixtures of solid particles of different sizes includes a fixed base and a perforate screen deck mounted for movement relative to the base during a screening operation. Leaf springs connect the tail end of... | 07/20/2004 |
| 6726024 | Apparatus for sieving particulate materials A sieving device having a mesh screen detachable from a frame body is capable of easily removing particulate material remained on the mesh screen and cleaning of the mesh screen and being installed even in a confined space requiring a sanitary condition. The particu... | 04/27/2004 |
| 6722504 | Vibratory separators and screens A vibratory separator with a base, vibrating apparatus, a screen container on the base, the screen container having a plurality of spaced-apart drain holes, a plurality of spaced-apart screens in the screen-container, said screens oriented vertically within the scre... | 04/20/2004 |
| 6679386 | Low-density particle sizing apparatus and method An apparatus and method for sizing and separating particles of generally low-density materials includes a stand, a frame movably suspended on the stand by a plurality of suspension assemblies, and an elongated screen box mounted on the frame. The screen b... | 01/20/2004 |
| 6575304 | Vibrating screen apparatus A vibrating screen apparatus for sizing materials is shown that has a minimum of moving parts therein. A vibrating motor is mounted below longitudinal vibrating bars. The vibrating bars are set on air mounts, which air mounts are between the vibrating bar... | 06/10/2003 |
| 6543620 | Smart screening machine A screening machine that uses electrically controlled transducers to vibrate a separating screen. The transducers can be piezoelectric patches, discrete piezoelectric components, or electromagnetic shakers. Further, the transducers can be coupled directly... | 04/08/2003 |
| 6508364 | Sieving device A sieving device and the operation of a sieving device are proposed. The sieving device has a supporting frame which can be made to vibrate and a vibration frame which is held so as to be able to vibrate freely in relation to said supporting frame. A simp... | 01/21/2003 |
| 6446813 | Sorting waste materials From one aspect the invention is a method of classifying waste materials comprising arranging two sieve screens, each having an inlet end and an outlet end, one above the other to define a space there between, arranging the upper screen, to be of coarser ... | 09/10/2002 |
| 6079569 | Efficiency ultrasonic sieving apparatus An ultrasonic sieving apparatus (10) is described which comprises a de-coupler (18) for enabling a combination of a transducer (T) and a first resonator (16) to be supported with respect to a sieve which includes a separation medium (14) provided in a fra... | 06/27/2000 |
| 6059119 | Rock screed bucket The present new, improved rock screed bucket has a solid rectangular back plate together with a framework having a rectangular bottom and a pair of generally triangular shaped sides. The solid rectangular back plate acts as a backstop. The rectangular bot... | 05/09/2000 |
| 6029823 | Recessed vibrator for an elliptical motion screen separator A structural mount for a vibrator of a screen separator is provided in which the vibrator mounting plate is secured at an angle directly to the basket side wall structure or to a load bearing structure which is parallel and fixed to the basket side wall s... | 02/29/2000 |
| 5915566 | Fine mesh screening A screening system having a resiliently mounted frame with a screen extending thereacross. The frame is vibrated by a low frequency vibratory drive using eccentric weights. About the peripheral frame of the screen, a high frequency drive or drives is empl... | 06/29/1999 |
| 5853583 | Multi-functional linear motion shaker for processing drilling mud A multi-functional linear motion shaker includes a rectangular outer support frame with a tank, often referred to as a "possum belly", for receiving the incoming drilling fluid flow. A set of adjustable louvers and a tray is positioned on the side of the ... | 12/29/1998 |
| 5836204 | Vibration generator and machine with such a generator A balanced vibration generator (1) for resonance-amplified operation of a machine or equipment (20) comprises at least one set of counter-oscillating masses (4, 16, 20) suspended in a spring system (3) in which the resonance springs are helical springs wh... | 11/17/1998 |
| 5829597 | Air density system with air recirculation and gyrating bar feeder A air density separation has a vertical air separation chamber that opens downwardly to allow rejected material to fall out the chamber through the open bottom. The air density separator is configured to recirculate the air and entrained fines, and so min... | 11/03/1998 |
| 5799799 | Ultrasonic screening system A device for screening cohesive material, and for eliminating screen blinding, is disclosed. The device includes a transducer for transmitting ultrasonic frequency throughout the screen surface, with the transducer supported independently of the screen in... | 09/01/1998 |
| 5732828 | Shale shaker apparatus The present invention provides an apparatus for retrofitting traditional derrick motor vibrators. In particular, an off-center shaft rotates, shaking a bed in an oscillatory manner. An apparatus of the present invention may be advantageously used to retro... | 03/31/1998 |
| 5653346 | Process and device for sifting, sorting, screening, filtering or sizing substances In an apparatus for sieving, grading, sifting, filtering or sorting dry solid substances or solid substances in liquids having a sieve surface provided in a sieve frame and an ultrasound transducer (10) which is associated with the sieve surface (18) and ... | 08/05/1997 |
| 5622266 | Garden sieve for wheelbarrow A garden sieve for a wheelbarrow has a collar frame adapted to conform to and fit loosely on the rim of a wheelbarrow. A sieve frame connected to the collar frame supports a wire screen adapted for sifting granular material. A motor can be connected betwe... | 04/22/1997 |
| 5542548 | Fine mesh screening A screening system having a resiliently mounted frame with a screen extending thereacross. The frame is vibrated by a low frequency vibratory drive using eccentric weights. About the peripheral frame of the screen, a high frequency drive or drives is empl... | 08/06/1996 |
| 5494173 | Vibrating screen apparatus for use in non-level operating conditions A vibrating screen apparatus capable of maintaining operation when in an out-of-level orientation is disclosed. The apparatus includes a generally rigid frame having first and second sidewalls and top and bottom screen decks extending therebetween. The fr... | 02/27/1996 |
| 5386169 | Device for causing an untuned structure to vibrate ultrasonically The present invention relates to the vibration of an untuned structure by means of an ultrasound converter. The main but not unique purpose is to cause a filtering cloth, a perforated metal sheet or a screening mesh to vibrate in order to improve the flow... | 01/31/1995 |
| 5343635 | Increased capacity disc dryer An improved disc dryer for aggregate material which operates by rotating and impacting a tilted pan which holds the material being dried. Increased capacity is attained by transverse stabilizers on the impactor assembly, adjustable pressure air shock moun... | 09/06/1994 |
| 5277318 | Apparatus for removing contamination from low density particulate materials An apparatus is provided for the removal of oversized contaminants from particulate material the is particularly suitable for the removal of contaminants from low density, high surface area particulate materials. The removal of contaminants is accomplishe... | 01/11/1994 |
| 5271165 | Increased capacity disc dryer An improved disc dryer for aggregate material which operates by rotating and impacting a tilted pan which holds the material being dried. Increased capacity is attained by transverse stabilizers on the impactor assembly, adjustable pressure air shock moun... | 12/21/1993 |
| 5199574 | Vibrating screen separator A vibrating screen separator comprising a tuned suspension system for controlling a sifting screen and a resiliently isolated vibrator drive system for efficiently vibrating the screen cloth. The separator may be configured with stacked decks and serially... | 04/06/1993 |
| 5143222 | Sieving apparatus Sieving apparatus has a piezoelectric transducer directly bonded to a grating (100), the transducer comprising a number of piezoelectric elements (1) sandwiched between first and second bodies (2,3 ). The first body (2) is in two parts (2A, 2B) which are ... | 09/01/1992 |
| 5131171 | Increased capacity disc dryer An improved disc dryer for aggregate material which operates by rotating and impacting a tilted pan which holds the material being dried. Increased capacity is attained by transverse stabilizers on the impactor assembly, adjustable pressure air shock moun... | 07/21/1992 |
| 5100539 | Dual-screen particle sizing apparatus and method An apparatus and method for sizing and separating particles of a material. The apparatus includes a stand, a frame having a pair of ends and an intermediate portion, and suspension assemblies attached to the stand and the frame for movably suspending the ... | 03/31/1992 |
