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| Number | Title | Issue Date |
| 7370766 | Filter cloth and replaceable filter module A filter cloth whose underside comprises substantially parallel, additional yarns 8 that are thicker than the rest of the yarns of the cloth, substantially parallel channels 9 being formed between the yarns, wherein filtered liquid passed through the c... | 05/13/2008 |
| 7370568 | Method and apparatus for angularly positioning a shaker separator bed An apparatus for angularly positioning a shaker bed, including a discharge end, includes an air source providing pressurized air, an hydraulic tank in selective communication with the air source and containing a quantity of fluid, at least one bellow in selective fl... | 05/13/2008 |
| 7216767 | Screen basket and shale shakers A screen mounting basket for a vibratory separator for separating components of material introduced into the basket, the vibratory separator including a collection receptacle beneath the basket, the basket including two opposed spaced-apart side walls having first e... | 05/15/2007 |
| 7198156 | Dam basket for vibratory separators A vibratory separator and a screen mounting basket for a vibratory separator for separating components of material introduced into the basket, the vibratory separator including a collection receptacle beneath the basket, at least one screen assembly mounted in the b... | 04/03/2007 |
| 7186347 | Vibratory apparatus for separating liquid from liquid laden solid material A vibratory apparatus for separating a liquid from a liquid-laden solid material. The apparatus includes an inclined trough having a base with a first end and a second elevated with respect to the first end. A deck is attached to the trough base, the deck defining s... | 03/06/2007 |
| 7182207 | System and process for break detection in porous elements for screening or filtering A detector for breaks in screens and filters employed in material separators includes a transmitter of RF signals and a receiver of RF signals located to either side of a screen. The separator includes a chamber having a barrier to RF signals with a path through the... | 02/27/2007 |
| 7108793 | Method of separating liquid from liquid laden solid material A method of separating a liquid from a liquid-laden solid material includes providing a trough having a deck defining a support surface with passages extending through the support surface. The liquid-laden solid material is deposited onto the support surface so that... | 09/19/2006 |
| 7093719 | Transportable, self-contained, recirculation, wash plant A combination of prospecting equipment and apparatus, for the purpose of collecting precious minerals from mineral bearing sand and gravel, located in regions that are arid in nature, have little water or limited water usage, due to environmental concerns. The Wash ... | 08/22/2006 |
| 7040488 | Screens and seals for vibratory separators A vibratory separator having a basket for supporting screen assembly apparatus, the basket having an interior surface, vibrator apparatus connected to the basket to vibrate it and the screen assembly apparatus releasably secured thereto, seal apparatus connected to ... | 05/09/2006 |
| 7040169 | Use of cuttings for real time attenuation prediction A method is disclosed for predicting attenuation in real time while drilling using a portable continuous wave technology (CWT) tool to obtain amplitude spectra as a function of frequency for the cuttings at the rig site. Attenuation is predicted, and plotted as a fu... | 05/09/2006 |
| 7018268 | Protection of work piece during surface processing The present invention provides an apparatus and method for protecting a work piece during surface processing. The apparatus employs a protective material to protect a wafer during backside grinding. The apparatus can further include a vacuum chuck that allows the pa... | 03/28/2006 |
| 6997325 | System and process for break detection in porous elements for screening or filtering A detector for breaks in screens and filters employed in material separators includes a transmitter of RF signals and a receiver of RF signals located to either side of a screen. The separator includes a chamber having a barrier to RF signals with a path through the... | 02/14/2006 |
| 6932883 | Screens for vibratory separators A method for making a screen assembly for a vibratory separator, the method including, in at least certain aspects, gluing together with glue at least two layers of fine screening material, allowing the glue to set, preheating the glued together at least two layers ... | 08/23/2005 |
| 6892888 | Screen with unibody structure A unibody structure for a screen assembly for a vibratory separator, the unibody structure, in certain aspects having an integral body member with a portion having a plurality of spaced-apart openings in a pattern of a plurality of spaced-apart screening openings an... | 05/17/2005 |
| 6838008 | Flow diverter and exhaust blower for vibrating screen separator assembly A flow diverter and a vacuum blower for vibrating screen separator assembly. The flow diverter decelerates and increases the exposed surface of materials. The exhaust blower removes vapors from the materials. ... | 01/04/2005 |
| 6746602 | Flow diverter and exhaust blower for vibrating screen separator assembly A flow diverter and a vacuum blower for vibrating screen separator assembly. The flow diverter decelerates and increases the exposed surface of materials. The exhaust blower removes vapors from the materials. ... | 06/08/2004 |
| 6543621 | Integrated gasket and screen frame An integrated gasket and screen frame for a screen assembly for use with a vibrating shaker. The screen assembly includes a tubular frame having a top side and an under side. At least one screen cloth is affixed to the top side of the frame. A slot in the... | 04/08/2003 |
| 6513665 | Screen mounting system A screen system employs a resiliently mounted housing, a vibration generator mounted to the housing, a mounting frame fixed to the resiliently mounted housing and a support surface. This system receives a screen including a screen frame and pre-tensioned ... | 02/04/2003 |
| 6485640 | Flow diverter and exhaust blower for vibrating screen separator assembly A flow diverter and a vacuum blower for vibrating screen separator assembly. The flow decelerates and increases the exposed surface of materials. The exhaust blower removes vapors from the materials.... | 11/26/2002 |
| 6484885 | Solids raised screens A new and unique design use of directional and re-directional raised ribs on a solids control filtering screen, such as those used in drilling wells for hydrocarbons and other substances, in conjunction with a coordinated system of hanging such screens an... | 11/26/2002 |
| 6401934 | Ramped screen & vibratory separator system A screen assembly has been invented which has a base, at least one layer of screening material on the base, and at least one ramp formed in the at least one layer of screening material.... | 06/11/2002 |
| 6352159 | Dual deck dewatering screen A vibrating dual deck dewatering unit which includes a lower screen deck and an upper screen deck. Material being processed by the unit is discharged from the upper screen deck onto the lower screen deck in such a manner that excess water is allowed to ba... | 03/05/2002 |
| 6186337 | Dual screen element having upper scalping screen adhered to crests of corrugated lower screen A new screen has been invented for use with vibratory screening apparatuses which has, in certain aspects, a base, a first screen on the base, and a scalping screen on the first screen, the first screen assembly including a corrugated screen having altern... | 02/13/2001 |
| 5896997 | Dynamic mining system comprising hydrated multiple recovery sites and related methods A mining system and related methods are disclosed by which gold and/or other heavy metals are recovered at multiple sites along a continuously hydrated ore processing route. The gold-bearing ore and primary or carrier water are dynamically and circuitousl... | 04/27/1999 |
| 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 |
| 5614094 | Vibrating screen unit A vibrating screen unit for dewatering dredged material. The vibrating screen unit includes a frame and a top screen deck, a middle screen deck and a bottom screen deck. The middle screen deck includes a splitter which extends across the width of the fram... | 03/25/1997 |
| 5385668 | Apparatus for separating particulate material from a liquid medium The invention relates to an apparatus in the form of a multi-cell installation, and a method for the recovery of metal values from a liquid medium 16 in the form of a pulp or leach solution in which a continuous supply of a liquid medium 16 is continuousl... | 01/31/1995 |
| 5221008 | Vibratory screening machine and non-clogging wear-reducing screen assembly therefor A vibratory screen for a vibratory screening machine consisting of a plate having a plurality of spaced openings therein, a coarse screen located in contiguous relationship to the plate, a fine screen on top of the coarse screen, a finer screen on top of ... | 06/22/1993 |
| 5108626 | Process for recovering course particles from tailings A process for the recovery of coal particles having a maximum dimension of less than 2 mm from coal tailings including the steps of forming a slurry (101) of tailings having a pulp density of from 10 to 30% by weight; feeding the slurry into a hydrocyclon... | 04/28/1992 |
| 5080807 | Continuous particle separation process A continuous process for the separation of small particles from larger particles in a biological preparation passes a liquid stream of the preparation through a first filter or screen, which retains larger particles, passing smaller particles in the liqui... | 01/14/1992 |
| 5076921 | Filtering screens A vibratory filtering screen assembly comprises an upwardly inclined member (12) on which is mounted the main filtering screen (14). At the exit (16) of the main screen is a secondary screen module (20) comprising a plurality of transverse supports (22) o... | 12/31/1991 |
| 5051166 | Soil rinsing apparatus A soil rinsing apparatus includes a rinsing and sieving element with two successive sieve regions for rinsing and sieving the soil. Water is supplied in order to reduce the soil to slime and to separate harmful substances from the soil. In order to reduce... | 09/24/1991 |
| 4981598 | Metal sorption method using interstage screening A method for sorbing metal values from a slurry containing the same is disclosed. The slurry is advanced through a plurality of vessels arranged in series while countercurrently directing a sorbent through the vessels. Metal values are sorbed from the slu... | 01/01/1991 |
| 4955482 | Screen cleaning in cil & cip systems In carbon-in-pulp (CIP) and carbon-in-leach (CIL) processes, especially those utilizing pure oxygen instead of normal air to increase the overall efficiency of the cyanide leaching-adsorption process in the recovery of gold and/or silver from ores, the sc... | 09/11/1990 |
| 4951805 | Feed hopper with distributor elements A hopper assembly for uniform distribution of sludge, in which distribution elements on the bottom of the hopper are rotatable about vertical axes to enhance uniformity of distribution of the sludge issuing from the hopper.... | 08/28/1990 |
| 4933078 | Sorption vessel with internal interstage screening vessel A sorption vessel including a tank for retaining a pulp of an aqueous slurry and a sorbent at a predetermined liquid pulp level therein; and an interstage screening system disposed within the tank and at least partially submerged beneath the predetermined... | 06/12/1990 |
| 4904394 | Method for selective filtering of a fluid using porous piezoelectric material A filter which is particularly useful with biological material is formed of porous piezoelectric material such as PZT or Polyvinylidene fluoride. By an application of a voltage to the piezoelectric material, the filter body is caused to vibrate so as to i... | 02/27/1990 |
| 4900430 | Screen cleaning in CIL and CIP systems In carbon-in-pulp (CIP) and carbon-in-leach (CIL) processes, especially those utilizing pure oxygen instead of normal air to increase the overall efficiency of the cyanide leaching-adsorption process in the recovery of gold and/or silver from ores, the sc... | 02/13/1990 |
| 4861462 | Method of forming sieve unit for screening machine A screen unit for a screening machine comprises a screen layer which is bonded to a screen frame spanning an opening thereof. The screen layer is uniformly heated before such bonding is effected so that cooling after bonding generates a tension in the scr... | 08/29/1989 |
| 4826017 | Vibrating screen A vibratory screening device for dressing, sizing, desliming, and dewatering feed streams of fine particulate material is comprised of a vibratory sieve bend screen and a vibratory planar screen deck. The sieve bend screen is positioned at the feed end of... | 05/02/1989 |
