Did You Know...
...that the Eveready Battery began as an invention called the "electric flowerpot," which was a tube with a battery and light bulb inside? The idea was to fasten this gizmo to the side of a flowerpot so it would illuminate the flowers from the bottom. The idea died on the vine and the businessman who licensed the flower pot, Conrad Huber, was left with a pile of useless tubes -- until he found a way to market them as batteries to light the world!
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| Number | Title | Issue Date |
| 7320749 | Method and apparatus for control of a gas or chemical A system and method for control of a gas and/or chemical for treatment of a fluid, and for monitoring the operation of such a system. In one embodiment, the system comprises a reactor for receipt of the fluid and the gas and/or chemical for dissolving, mixing, diffu... | 01/22/2008 |
| 7229527 | Method for the controlled thickening of low consistency fiber suspensions The present invention relates to the thickening of pulp suspensions. A low consistency pulp suspension is fed to a pre-thickener (10) through an inlet conduit (18). A layer of thickened pulp, formed on a filter surface (22), is pushed along the ... | 06/12/2007 |
| 7135107 | Apparatus and system for concentrating slurry solids An apparatus to separate solids from drilling slurry, having an inlet positioned over an outlet of a concentration tank to displace water that would otherwise enter the down-stream centrifuges. Baffles are provided to direct solids to the outlet and minimize the tim... | 11/14/2006 |
| 7014752 | Water treatment control system for minimizing trihalomethane formation A water treatment control system for minimizing trihalomethane formation includes chlorine injection equipment having a plurality of chlorine injectors (11d, 12, 13), a fluorescence analyzer 7 provided on the upstream of the chlorine inje... | 03/21/2006 |
| 7011741 | Filtration apparatus operating features A pressure-filter apparatus includes at least one filtration chamber coupled with a source of slurry. The filtration chamber is also coupled with a source of fluid at an elevated pressure, which may be arranged in series or in parallel with a source of wash fluid. T... | 03/14/2006 |
| 7008530 | Water softener A water softener employs a vessel, a distributor with a manifold body associated to said vessel and a valve control device. A control unit programs operation of the softener. An actuator unit has a cylinder divided into a first chamber and a second chamber. The actu... | 03/07/2006 |
| 6982032 | Apparatus and method for biological treatment of environmental contaminants and waste The invention is directed to an apparatus for delivering activated microorganisms to an environment to be treated. The apparatus has a bioreactor containing microorganisms, a supply of organic and inorganic nutrients and a controller. The controller maintains the co... | 01/03/2006 |
| 6767432 | Apparatus for the thickening of fiber suspensions The present invention relates to the thickening of pulp suspensions. A low consistency pulp suspension is fed to a pre-thickener (10) through an inlet conduit (18). A layer of thickened pulp, formed on a filter surface (22), is pushed along the ... | 07/27/2004 |
| 6660168 | Feeder and method for preparing aqueous solutions containing high concentrations of solid oxidizers A continuous method is provided for dissolving a solid oxidizer into an aqueous solution which yields a stream of the aqueous solution having a constant or near constant concentration of solid oxidizer. The method of the present invention includes (a) dis... | 12/09/2003 |
| 6638433 | System and method for controlling water-only cyclones A system for controlling the operation and performance of water-only cyclones used in coal preparation plants for separating a fine raw coal slurry into fine coal and fine refuse slurries includes a variable speed pump for feeding the slurry from an under... | 10/28/2003 |
| 6599425 | Bioremediation of nitrate contaminated groundwater The invention disclosed relates to a method and apparatus for the denitrification of groundwater in situ in an aquifer under substantially anaerobic conditions, the method comprising (a) providing a network, including an extraction well for removal of gro... | 07/29/2003 |
| 6576140 | Commercial kitchen sink drain improvement A food disposal system for installation on a drain of a commercial kitchen sink enables segregation of oil/grease from effluent flows from the drain. A housing collects effluent flows containing water, oil/grease, and solids from the drain, and a macerati... | 06/10/2003 |
| 6527958 | Device for reducing water hardness (softener) having a resins exhaustion sensor, and washing machine having said device A water softener for reducing water hardness, suitable for use in a household washing machine, in particular a dishwasher, has a container within which ionic exchange resins are housed, which reduce the degree of hardness of water contacting them, and app... | 03/04/2003 |
| 6495031 | Enclosed belt filter apparatus A liquid filter apparatus includes a filter media belt enclosed by sealably mated cover pan and floor pan defining a vacuum chamber connected to a sealed clean liquid tank, with clean liquid pumped out continuously to draw liquid to be filtered into an up... | 12/17/2002 |
| 6488852 | Apparatus and method for biological treatment of environmental contaminants and waste The invention is directed to an apparatus for delivering activated microorganisms to an environment to be treated. The apparatus has a bioreactor containing microorganisms, a supply of organic and inorganic nutrients and a controller. The controller maint... | 12/03/2002 |
| 6402941 | Apparatus for biological treatment of environmental contaminants and waste The invention is directed to an apparatus for delivering activated microorganisms to an environment to be treated. The apparatus has a bioreactor containing microorganisms, a supply of organic and inorganic nutrients and a controller. The controller maint... | 06/11/2002 |
| 6379539 | Point of entry water treatment system A point of entry water treatment system. Components mounted on a base frame are interconnected and provide a system and method for treating freshwater, including from a lake, river, well or cistern, to provide potable water. A pre-filter removes sediment ... | 04/30/2002 |
| 6337023 | Flotation apparatus for clarifying produced water A dissolved gas flotation apparatus and process for removing oils and other contaminants from produced water generated in the production of crude petroleum and natural gas. The invention is particularly designed for offshore applications, where space is l... | 01/08/2002 |
| 6200466 | Decontamination of water by photolytic oxidation/reduction utilizing near blackbody radiation A reactor system for decontamination of water by photolytic oxidation utilizing near blackbody radiation, the system comprising (1) a reaction chamber defining an internal space with an inlet and an outlet; and (2) a broadband radiator for generating radi... | 03/13/2001 |
| 6099739 | Cleaning apparatus for a magnetic filter and cleaning method thereof A cleaning apparatus for a magnet filter and a method of cleaning a magnetic filter. The magnetic filter is disposed in a circular passage for processing a cleaning fluid. The cleaning apparatus includes sensors for determining when the magnetic filter sh... | 08/08/2000 |
| 6001243 | Heating and reaction system and method using recycle reactor Systems and methods for heating, reacting, and/or treating a stream containing oxidizable matter. Recycle reactor is used alone or in conjunction with plug-flow reactor. Density differences in the recycle reactor facilitate flow within the recycle reactor... | 12/14/1999 |
| 5938918 | Domestic water clarifier A domestic water clarifier comprising a storage tank and a batch tank having an annular inner wall is described. Raw water is pressurized and injected into the batch tank along with a quantity of a flocculent chemical such that the raw water and the flocc... | 08/17/1999 |
| 5804080 | Computer controlled method of operating a swimming pool filtration system A method of operating a filter system of a swimming pool in proportion to the degree of contamination of the water in said pool by processing a signal representative of the number of persons within the pool and other values characteristic of the pool and ... | 09/08/1998 |
| 5792343 | Brine supply system A brine supply system including a first brine tank to store diluted brine of a predetermined concentration to be supplied into an electrolytic brine treatment device and a second brine tank to store an amount of saturated brine at a predetermined concentr... | 08/11/1998 |
| 5725757 | Reactor for UV radiation for the treatment of liquids The invention relates to a reactor for UV radiation for the disinfection of liquids comprising at least one high or medium pressure UV emitter (1) arranged coaxially inside a protective sheath (2) transparent to UV, the assembly formed by the emitter and ... | 03/10/1998 |
| 5628896 | Apparatus for operating a filter arrangement A method and apparatus for operating a filter system of a swimming pool in proportion to the degree of contamination of the water in said pool by processing a signal representative of the number of persons within the pool and other values characteristic o... | 05/13/1997 |
| 5589058 | Apparatus for treatment of water The invention is directed to a water treatment system including a treatment tank having an ion-exchange mineral bed or filter bed therein, and a valve head assembly disposed on top of and in fluid communication with the treatment tank. The valve head asse... | 12/31/1996 |
| 5498347 | Reactor for the ozonization of water Reactor for the optimized ozonization of water intended for human consumption, in which the direct oxidizing action of the ozone is supplemented by the radical oxidizing action of the ozone, the latter being intensified by the introduction of hydrogen per... | 03/12/1996 |
| 5399260 | Field portable water purification system A mobile water filtration and chlorination system in modular form provides a universal water treatment, pump and distribution system.... | 03/21/1995 |
| 5374352 | Universal recycled wash water system A universal recycled wash water plant having a collector tank through which collected wash water and rinse water is channeled to a grease/oil/water separation tank which separates oil and grease from the water and which holds the oil-separated water in a ... | 12/20/1994 |
| 5133872 | Method and apparatus for controlling throughput in a beltpress A beltpress controller performs on-line measurements of output sludge cake thickness. A controller takes a product of the measured cake thickness with belt speed, moisture content and belt width to determine a rate of dry solid output per unit time. The c... | 07/28/1992 |
| 5112477 | Purified water and ice dispensing apparatus A vending machine that dispenses either purified ice or purified water in predetermined quantities in response to a fixed payment by a user. The machine consists of compartmentalized sections for each specific function, comprising a water purification and... | 05/12/1992 |
| 5059330 | Gray water reclamation method and apparatus An apparatus for cleansing gray water from showers and the like and reclaiming the cleansed water for reuse comprises a receptacle and a conduit for delivering gray water to the receptacle. A sensor detects flow of gray water into the receptacle and injec... | 10/22/1991 |
| 5015394 | Apparatus and method for the treatment of water with ozone A method for treating water with ozone in which a countercurrent flow of liquids is established within a treatment vessel to insure intimate contact and substantial contact time between ozone and water. The ozone and water are first pre-mixed by passing t... | 05/14/1991 |
| 4985141 | Liquid-liquid contactor columns A liquid-liquid contactor column 10 has a solvent input 16 and an aqueous phase input 22. Lighter phase liquid is discharged at 31 and heavier phase is moved by an air lift 26 to a receiver. The air supply line 28 to the air lift 26 includes valve 32 and ... | 01/15/1991 |
| 4889639 | Microwave emulsion treater with controlled feed water content A microwave-based emulsion treating method and system comprising a microwave energy source, a microwave applicator for treating an emulsion, a separator vessel for receiving and separating microwave-treated emulsion, an oil-water analyzer for determining ... | 12/26/1989 |
| 4865724 | Metal working machine liquid filtering device with coalescer, filter, and time delayer Versatile filtering apparatus is provided, particularly for processing liquid or coolant used with metal-working machines. The apparatus is adaptable for processing coolant in a wide variety of coolant systems to meet a variety of requirements of metal-wo... | 09/12/1989 |
| 4855061 | Method and apparatus for controlling the coagulant dosage for water treatment Apparatus for controlling the coagulant dosage rate includes a charge sensor located adjacent a coagulant pump for measuring the net electrical charge on coagulated water before water treatment and a turbidity meter for measuring the effluent turbidity af... | 08/08/1989 |
| 4767525 | Clean water system A clean water system that has a noval air system and a novel water system in which the dry air to the case of the ozone generator as well as to the ozone generator and has a primary drier, a sensor and reserve drier such that the reserve drier provides dr... | 08/30/1988 |
| 4731176 | Control system for froth flotation processes A method and apparatus for monitoring the operation of a froth flotation process comprises sensing variations in solids content of the input stream to the process, varying the dosage of flotation reagent employed in accordance with the input variations, s... | 03/15/1988 |
