Did You Know...
...that in 1800 ether was first used by partyers as a fun diversion? Sniffing the gas led to hilarious and raucous laughter as people watched each other become more and more intoxicated and silly. Several doctors independently realized the value ether would have to anesthetize surgery patients. Of those who claimed rights to the "discovery," none had a happy ending. One had a seizure and died defending his rights. Another spent his life in an asylum because he had been denied acclaim. A third became addicted to chloroform and, in a New York City jail, he soaked a cloth in the drug, severed an artery and bled to death.
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| Number | Title | Issue Date |
| 7699179 | Retention device for filter screen A retention device for use with a filter apparatus having a main frame and an intermediate frame member, and a plurality of parallel filter elements in a filter zone being spaced one from another at a selected distance and forming a filter screen known as a harp scr... | 04/20/2010 |
| 7435343 | Vibration filter A vibration filter that eliminates the problems of polarization, blockage and fouling is disclosed to include a separation membrane for removing solid matter in a fluid, a base, a magnetic field generator controllable to provide a variable magnetic flux, and vibrato... | 10/14/2008 |
| 7335312 | Centrifuge with combinations of multiple features A centrifuge with combinations of multiple features is disclosed. In one aspect, a centrifuge for removing more dense material from a fluid medium includes a fluid separation wall placed within a sleeve. The fluid separation wall rotates around the axis of rotation.... | 02/26/2008 |
| 7320750 | Centrifuge with controlled discharge of dense material A centrifuge with controlled discharge of dense materials disclosed. A centrifuge includes a fluid separation wall placed within a sleeve to form a containment zone therebetween. The fluid separation wall aligns and rotates parallel to an axis of rotation. A recepta... | 01/22/2008 |
| 7294274 | Filtration system with enhanced cleaning and dynamic fluid separation A filtration system is provided with filter media operable to remove solids, particulate and colloidal matter from a process fluid. Acoustic, vibration and sonic energy may be used to clean associated filter media to allow substantially continuous filtration of proc... | 11/13/2007 |
| 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 |
| 7111739 | Wet fine particle sizing and separating apparatus A particle sizing and separating apparatus is disclosed. The apparatus includes a base and a frame that is movably connected to the base. A motor assembly is provided to vibrate the frame and at least two screens are connected to the frame. Means also are provided f... | 09/26/2006 |
| 7094297 | Methods for making screen assemblies A method for making a screen assembly for use in a vibratory separator, the method, in certain aspects, including producing a heated first screen assembly; cooling the first screen assembly while a second heated screen assembly is being made; and cooling the second ... | 08/22/2006 |
| 7056366 | Method and apparatus for increasing the operating lifetime of gas filters by an acoustic field A method for slowing down the increase in pressure drop across a gas filter caused by clogging as a result of a contaminant particles layer being formed on the filter. The method includes applying acoustic waves from an acoustic wave source to a gas to be filtered a... | 06/06/2006 |
| 6971525 | Centrifuge with combinations of multiple features A centrifuge with combinations of multiple features is disclosed. In one aspect, a centrifuge for removing more dense material from a fluid medium includes a fluid separation wall placed within a sleeve. The fluid separation wall rotates around the axis of rotation.... | 12/06/2005 |
| 6938779 | Screen assembly for a shale shaker A screen assembly for a shale shaker comprising a panel and a support structure, the panel having an area provided with a multiplicity of apertures and at least one layer of screening material arranged over the multiplicity of apertures, wherein said panel is remova... | 09/06/2005 |
| 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 |
| 6910587 | Gumbo separator methods and apparatuses A separator system for separating first material from second material, in one aspect for separating gumbo from drilling fluid, a combination of the first material and second material introducible to the separator system, the separator system having a screen conveyor... | 06/28/2005 |
| 6890442 | Automatic handling system for a bag system The invention relates to a method and apparatus for the automatic handling of bag systems in an installation. The method includes the steps of loading at least one bag system having a primary bag containing a body fluid such as blood and a secondary bag into a handl... | 05/10/2005 |
| 6797158 | Method and apparatus for acoustically driven media filtration A method and apparatus for acoustically enhanced particle separation uses a chamber through which flows a fluid containing particles to be separated. A porous medium is disposed within the chamber. A transducer mounted on one wall of the chamber is powered to impose... | 09/28/2004 |
| 6514381 | Method and apparatus for continuous mechanical thickening of slurry Methods and corresponding devices are set forth for the continuous mechanical dewatering of aqueous suspensions or elutriations, particularly of waste-paper suspensions or slurries, between an endless mesh band and an endless compression surface having a ... | 02/04/2003 |
| 6351895 | Method for making drying more effective The invention relates to a method for making the drying of materials, particularly finely divided materials, more effective, in which method, of a slurry containing liquid and solids there is made a filter cake (2,12,22) onto the surface of the filter med... | 03/05/2002 |
| 6267250 | Centrifuge with partial wear resistant basket An improved screen basket for use with a centrifuge includes two adjoining screen sections. The first screen section is formed from a wear resistant material and is located proximate to the point at which slurry is introduced into the basket. The length o... | 07/31/2001 |
| 6251294 | Ultrasonic filter regenerating apparatus and method A self-regenerating filter unit having a housing which carries an ultrasonic transducer periodically energizable to dislodge caked solids from a filter element in the housing. The removed solids collect in a storage zone where they are periodically remove... | 06/26/2001 |
| 6213311 | Filter having a device for countering the clogging of the filter A filter having a device for countering the clogging of the filter for a fluid, in particular a liquid, includes a filtering element arranged in a filter cavity bounded by an outer casing, an ultrasound emitter coupled into the cavity, in the direction of... | 04/10/2001 |
| 6079120 | Method for making drying more effective The invention relates to a method for making the drying finely divided materials, more effective in a suction drier provided with a fine porous suction surface, where the radii of the fine pores of the suction surface are essentially within the range of 0... | 06/27/2000 |
| 6070739 | Filtering device A filtering device includes a screen including support rods extending in the axial direction of the screen and arranged generally cylindrically with a predetermined interval, and a cylindrical filter member attached fixedly on the outside of the support r... | 06/06/2000 |
| 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 |
| 5814230 | Apparatus and method for separation of solids from liquid Method and apparatus are provided for separating coarse and ultrafine solids from a liquid stream to produce a substantially dry solids discharge and a clarified liquid. Apparatus is provided comprising a combination of a settling tank, a plurality of fil... | 09/29/1998 |
| 5690826 | Shaker screen assembly A new type of filter assembly which can be employed to retrofit an existing shaker or which can be built as an integral part of a new shaker. The assembly is comprised of a series of compartments arranged in cascading fashion within the shaker. Each compa... | 11/25/1997 |
| 5641070 | Shale shaker A shale shaker has been developed which, in one aspect, has one or more upper screens and one or more lower screens with an upper screen at a discharge end of the shale shaker and a lower screen disposed to receive material discharged from a discharge end... | 06/24/1997 |
| 5445738 | Vibrating filter A vibrating filter has a housing, a separation member, a filter, and a vibrator. The housing defines an outlet chamber and a filter chamber, and the separation member secures within the housing to separate the outlet chamber and the filter chamber. The fi... | 08/29/1995 |
| 5409618 | Fluid classifier A fluid classifier for separating particles from a lading for operation with a lading tank including a filter unit for mounting in the tank and having capillary passages for fluid flow from the tank externally of the filter unit to the interior of the fil... | 04/25/1995 |
| 5336408 | Apparatus for separating particles from a fluid stream An apparatus for separating coarse particles from a fluid or wet stream, optionally containing fine particles, includes a frame, a screen box, means attached to the frame and to the screen box for movably suspending the screen box on the frame for vibrato... | 08/09/1994 |
| 5085772 | Filter for filtration of fluids A filter for filtration of fluids includes a filter cloth arranged in a housing with an inlet and an outlet. An acoustic field produced by an acoustic transducer, can act on the filter cloth. The invention the filter cloth is arranged substantially in a p... | 02/04/1992 |
| 5084176 | Vibrating filter A vibrating filter has a housing, top and bottom plates spaced vertically in an upper portion of the housing and defining an outlet chamber therebetween, at least one filter element dependent from the bottom plate into a filter chamber defined in the hous... | 01/28/1992 |
| 5039347 | Method for cleaning the filter plates of a suction drier The invention relates to a method for cleaning the filter plates of a suction drier, which suction drier (20) comprises a tank (13) for the slurry to be suction dried, in connection to which tank there rotates one or several filter disks formed of the sai... | 08/13/1991 |
| 4946602 | Method of cleaning filter discs in a suction dryer using ultrasonic vibration Method in a suction dryer (10), which comprises a basin (12) for a suspension to be suction-dried, in connection with which basin one or several filter-plate discs (14a) revolve, onto whose faces a filtrate cake is gathered and dewatered by the effect of ... | 08/07/1990 |
| 4915850 | Method and apparatus for separating granulate from a viscous suspension Method and apparatus for separating and recovering a granulate from a viscous suspension containing the graulate. The suspension is placed in a layer on an endless sieve belt guided around return rollers and effecting a separation into a sieve residue of ... | 04/10/1990 |
| 4911834 | Drilling mud separation system A separation system for removing drilled solids from a drilling fluid being circulated in a well including a vibratory screen apparatus (10) and method for separating materials having a base (12) supporting a vibratory support frame (13) for relative vibr... | 03/27/1990 |
| 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 |
| 4872988 | Method and device for separation of colloidal suspensions Particulates are separated from colloidal suspensions by filtration where the filter is oscillated relative to the suspension in order to inhibit plugging of the filter. Plugging is substantially eliminated and filtration rates greatly enhanced by oscilla... | 10/10/1989 |
| 4804481 | Helical spring apparatus and process for detaching filter cake In the filter according to the invention (precoated filter), gap-type filter elements (11) designed in the manner of filter cartridges and consisting of a profile wire wound into a helical spring are used. In order to detach the adhering filter cake, the ... | 02/14/1989 |
