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| Number | Title | Issue Date |
| 4464257 | Apparatus for the treatment of wastewater sludge According to an embodiment thereof, the apparatus comprises a pair of reaction vessels in which, sequentially, to treat the sludge. Both vessels are pressurized, and the first thereof has an aerator for aerating the sludge, and receives sulfuric acid and ... | 08/07/1984 |
| 4461703 | Swimming pool aeration cleaning system An aeration device for use in a swimming pool system wherein a pump draws water from a lower portion of a body of water through a filter and returns it to the body of water via a return conduit, and comprises a tubular aeration member positioned adjacent ... | 07/24/1984 |
| 4454034 | Filter apparatus A filter apparatus in which a generally horizontal bed of filter material is supported on a porous support and is divided by spaced partitions into individual filter cells above the support and individual filter compartments below the support, and a carri... | 06/12/1984 |
| 4427555 | Filter system A filter system wherein there is a first chamber containing fluid at a predetermined level, a shroud positioned in the first chamber immersed in the fluid, said shroud defining a downwardly-open second chamber, a quantity of discrete, buoyant bodies suppo... | 01/24/1984 |
| 4410339 | Apparatus for washing air in air-conditioning systems An air washing apparatus consisting essentially of two separate cyclic units. In the first cyclic unit, air is sprayed with a fluid consisting of water and a halogen. The spray removes impurities from the air, and brings the impurities into the fluid supp... | 10/18/1983 |
| 4396505 | Filtration system pump arrangement A filtering device including a tank partially located below floor level having a filtrate compartment and a filter means interposed therebetween. Reservoir means and an end suction centrifugal pump means both located substantially on floor level wherein c... | 08/02/1983 |
| 4381996 | Method and device for cleaning livestock dipping vat solution to be used in conjunction with a dipping vat A device for cleaning livestock dipping solution which includes means for pumping contaminated solution from a livestock dipping vat to a tank with settling compartments, the first of which has a deflector pan into which the entering solution is directed ... | 05/03/1983 |
| 4377476 | Tissue filtering bath for histology A multiplicity of filtering means used in manual and automatic modes are employed in combination intermittently with a temperature controlled water contaning vessel used in histo-pathological tissue processing. Tissue embedded in paraffin blocks is cut in... | 03/22/1983 |
| 4359789 | Sewerless disposal system A waste disposal system is disclosed which includes apparatus for treating water which has been used for cleaning, washing and for flushing toilets and for disposing of waste products by incineration. The total output of the system to the environment is t... | 11/23/1982 |
| 4342651 | Process and apparatus for producing sterilized and bacteria-free water In a process and apparatus for obtaining sterilized and bacteria-free water suitable for medicinal injections and other purposes, deionized water is supplied to a reverse osmosis filter, which is impervious to attack by bacteria and which is arranged such... | 08/03/1982 |
| 4313833 | Waste water treatment system and process An improved process and a system for waste water treatment are disclosed which are particularly suited for use in industrial plants (10) having existing drainage trench networks (108-128) through which normal plant effluents, component leakage and acciden... | 02/02/1982 |
| 4306967 | Cooling tower basin water treating apparatus A portable cleaning apparatus for removing solids and particulate material from water in the basin of a cooling tower and having a trailer with a frame supporting a platform and a plurality of wheels for enabling said trailer to be towed from place to pla... | 12/22/1981 |
| 4297213 | Apparatus for separating and contacting friable particulate organic matter from and with liquids The invention is concerned with the treatment of friable particulate organic matter such as cottage cheese curd or casein with liquids as by separation of the matter from the liquid in which it may be formed (e.g. whey) and further contacting with a liqui... | 10/27/1981 |
| 4292174 | Filter and cooling apparatus for dry-cleaning systems An improved combination filter-and-cooling apparatus incorporated within a dry-cleaning operation, wherein the cleaning fluid or solvent is filtered and cooled within substantially closed flow systems, the apparatus being defined by a dual-chambered housi... | 09/29/1981 |
| 4290883 | Classifying device for aggregates immersed in a fluid A device for separating into two or more components an aggregate of various species of particles immersed in and settled at the bottom of a body of fluid, one application being the removal of biological debris settled on and within the gravel bed of an aq... | 09/22/1981 |
| 4284501 | Control apparatus for purifying acumulated condensate Control apparatus for the purification of collected condensate, including condensers, at least two collecting chambers having open tops and at least two collecting chambers having covered tops for the condensers, a feed line having connections to the cove... | 08/18/1981 |
| 4277336 | Multiple by-pass filter system A filter system for filtering cleaning solvents includes a first filter unit having mechanical filters such as paper or the like, through which the fluid is first pumped, and a second filter unit having adsorption chemicals, such as clays and charcoal, th... | 07/07/1981 |
| 4267060 | Travelling sheet, flat-bed vacuum filter and method To seal the top cover of a vacuum travelling web filter, the top cover is lowered, by gravity, with a depending rim fitting against an upstanding rim of a filtrate chamber pan; the contaminant chamber above the filter web is closed off, and supply of filt... | 05/12/1981 |
| 4255260 | Waste disposal system A waste disposal system provides a mixing stage where waste matter is water-charged, the water charged mixture is then steam exploded by being sprayed onto a white hot surface in a chamber with only one outlet where the expansion on vaporization forces th... | 03/10/1981 |
| 4246665 | Non-polluting toilet system Apparatus for disposing of human waste comprising in combination a bowl, a treating chamber connected to the bowl for receiving the contents of the bowl together with a predetermined quantity of flush water, a macerator in the treating chamber for effecti... | 01/27/1981 |
| 4243532 | Blood treating system A blood-treating system in which apparatus for the purification of blood by purifying blood plasma, is provided. The system includes as principal elements, an apparatus for separating blood plasma by way of a membrane, an apparatus for purifying blood pla... | 01/06/1981 |
| 4227999 | Ultrafiltration process and apparatus In the ultrafiltration of liquids such as vinegar, wine, etc., the liquid to be filtered is fed from and back to a circulating tank through at least one filtration circuit including at least two serially connected, vertically spaced, non-horizontal filter... | 10/14/1980 |
| 4211654 | Apparatus for aerobic treatment of contaminated liquid A waste treatment apparatus operated either by gravity or by positive displacement pump in which a variable inflow of contaminated liquid is aerated, clarified, and filtered. The filtered liquid is used to backwash one of at least a pair of rapid sand fil... | 07/08/1980 |
| 4190538 | Pump seal flush An inertial filter is installed in the discharge of a pump which is used to transfer slurries, and the filtrate stream from the filter serves as the pump seal flush.... | 02/26/1980 |
| 4181612 | Apparatus for servicing a bird cage The apparatus and technique service the cage in the sense of removing the waste material generated in the cage by the bird's occupancy of the same. The apparatus and technique employ a bed of particle matter to filter elements of the waste material from a... | 01/01/1980 |
| 4180460 | Portable machine for regenerative dialysis A portable machine for regenerative dialysis comprises a dialyzing liquid reservoir in which is immersed a suction duct connected to a heating tube the temperature of which is controlled by a thermal probe pair piloting a temperature adjusting element. Th... | 12/25/1979 |
| 4179374 | Apparatus for the treatment of wastewater Apparatus for the treatment of wastewater has an enclosed unit providing a facultative zone wherein a mixture low in dissolved carbon comprising raw sewage and partially processed sewage undergoes denitrification brought about by faculative organisms cont... | 12/18/1979 |
| 4176064 | Mixture concentrator A concentrator or mixture separator usable, for example, for significantly increasing the amount of proppant in a formation-fracturing foam is disclosed. In a particular embodiment the concentrator or separator is comprised of a substantially horizontally... | 11/27/1979 |
| 4159948 | Beltless vacuum filter A liquid filter apparatus wherein an elongated sheet of filter media is movable along an inclined support at the bottom of a receiving tank for dirty liquid below which is a collection tank for filtered liquid. The periphery of the collection tank is seal... | 07/03/1979 |
| 4145280 | Method and device for separating a mixture Method of separating a mixture of a carrier medium and at least one substance insoluble therein, for example, water and oil or gas and soot, in which the mixture is separated in three steps, i.e. a first step in which the mixture is passed for coalescence... | 03/20/1979 |
| 4130485 | Novel filtration process and apparatus Process and apparatus for separating particulate material from fluids. Essentially, the process and apparatus involves passing a dispersion of particulate material in a fluid through a porous, solid tubular member, which can retain the particulate materia... | 12/19/1978 |
| 4126545 | Apparatus and method for treating waste-containing liquors Waste containing liquor is treated in a device containing a plurality of submerged, slowly rotating bacterial growth surfaces which are spaced apart from each other, extend in a horizontal plane and are mounted on a vertical, rotating shaft. The bacterial... | 11/21/1978 |
| 4122008 | Filtration process for separating particles from liquid coolants in lens grinding devices A process for separating fine particles entrained in the liquid coolant of lens generating or edging device comprising passing the contaminated coolant through a filter medium made of a non-woven fabric comprising synthetic filaments having a denier of fr... | 10/24/1978 |
| 4104128 | Apparatus and method for recovery of coal fines The specification discloses apparatus and methods for recovery of coal fines and for recycling thereof incidental to a self-contained system for charging preheated coal into coke ovens. The apparatus enables a system for charging preheated coal into coke ... | 08/01/1978 |
| 4104164 | Device for treating waste water A system for continuously treating waste water from laundries, car washers and like cleaning establishments to recover water soap, detergents, and other chemicals. The process of using the system is carried out by flowing the untreated water through sand ... | 08/01/1978 |
| 4094237 | Apparatus for the treatment of brine The invention relates to a method and apparatus for purifying bacterially-contaminated brine overflow from a bacon curing machine. The contaminated brine is collected in a collecting tank, passed through a filter and mixed with fresh brine which is direct... | 06/13/1978 |
| 4081376 | Emergency running apparatus in a filtering apparatus A settling layer filtration system having at least one settling layer arranged in a vertical direction with the liquid to be filtered being delivered thereto by means of an electric powered filter pump which is protected against the collapse of that settl... | 03/28/1978 |
| 4072612 | Aerator for bodies of water An aerator for bodies of water comprises a submerged water intake with a filter on it, that leads to the axial inlet of a centrifugal pump of the type that can handle substantial quantities of air. An air inlet to the axial pump inlet introduces the air c... | 02/07/1978 |
| 4037338 | Vacuum belt filters This invention relates to improvements in or relating to vacuum belt filters. It relates further to suction boxes for such filters and to a method of operation of the filters. More particularly, the invention relates to the supporting of the belt of the f... | 07/26/1977 |
| 4036754 | Sewage treatment apparatus An aerobic bacteria sewage treatment apparatus for treating waste water mixed with activated sludge by circulating the mixed liquor about a clarification compartment placed in a main treatment tank from which the clarification compartment withdraws water ... | 07/19/1977 |
