Did You Know...
...that to encourage use of his new invention, the shopping cart, market owner Sylvan Goldman hired fake shoppers to push the carts around his store in Oklahoma City? Seems his customers were reluctant to give up their hand-carried baskets.
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| Number | Title | Issue Date |
| 7465379 | Electrolysis cell and structural elements to be used therein An arrangement of one or more structural elements (3) in a cell lining, in particular for use as a side lining in aluminum electrolysis cells (5). The design of and choice of materials for side linings can be fitted in existing electrolysis cells, plus... | 12/16/2008 |
| 7316765 | Apparatus and method for molten salt electrolytic bath control An apparatus for controlling a molten salt electrolyzer in which an electrolytic bath in a solid form as contained in the electrolyzer is melted to automatically attain a state allowing electrolysis, which apparatus comprises detecting means for detecting the change... | 01/08/2008 |
| 7255783 | Use of infrared imaging to reduce energy consumption and fluoride consumption Operations in an electrolytic cell for producing aluminum are controlled by sensing infrared radiation on an outer surface of a cell chamber to determine an actual temperature. When the actual temperature is greater than a target temperature, a crust hole is repaire... | 08/14/2007 |
| 6977031 | Anode assembly An anode assembly for conducting electrical energy to an electrolytic smelting cell including an anode of high electrically conductive material connected to a yoke, the ends of the yoke being receivable within anodes, the yoke including a core of highly electrically... | 12/20/2005 |
| 6811677 | Electrolytic cell for the production of aluminum and a method for maintaining a crust on a sidewall and for recovering electricity The present invention relates to an electrolytic cell for the production of aluminum comprising an anode and an electrolytic tank where the electrolytic tank comprises an outer shell made from steel and carbon blocks in the bottom of the tank forming the cathode of ... | 11/02/2004 |
| 6540887 | Aluminum electrowinning cells with oxygen-evolving anodes A cell for the electrowinning of aluminium comprises at least one non-carbon metal-based anode (10) having an electrically conductive metallic structure (12, 13, 15) which is suspended substantially parallel to a facing cathode (20, 21, 22). Such metallic... | 04/01/2003 |
| 6447667 | Thermal shock protection for electrolysis cells A cermet anode of an electrolytic cell is protected from thermal shock during cell start-up by coating an outer surface portion of the anode with a coating composition comprising carbon or aluminum or a mixture thereof. A particularly preferred coating co... | 09/10/2002 |
| 6436270 | Method and device for controlling the movement of a feeding and breaking chisel in an aluminum production cell A method and a device for controlling the movement of a combined alumina feeding and crust breaking chisel in an aluminum production cell, wherein the chisel is moved downwards and upwards by means of a pneumatic cylinder which is alternatively fed with p... | 08/20/2002 |
| 6358393 | Aluminum production cell and cathode A cell for the production of aluminium by the electrolysis of an aluminium compound dissolved in a molten electrolyte, in which an outer mechanical structure forming an outer shell (21) houses therein one or more inner electrically-conductive cathode hold... | 03/19/2002 |
| 6251237 | Electrolytic pot for production of aluminum using the Hall-Heroult process comprising cooling means An electrolytic pot for the production of aluminum by the Hall-Heroult electrolysis process includes a cooling device for blowing air with localized jets, advantageously with variable flow, in order to evacuate and dissipate thermal energy from the pot. A... | 06/26/2001 |
| 5108572 | Electrolytic furnace An electrolytic furnace comprises refractory concrete elements (1) which are loosely mounted on rails (6) arranged in a tank (6) and which support carbon elements (2) and metal bars (3). The refractory concrete elements (1) on the one hand and the carbon ... | 04/28/1992 |
| 4683046 | Reduction pot for the production of aluminum An aluminum reduction cell having an outer steel shell, thermal and electrical insulation, and an inner lining comprising at least a floor and sidewalls, the improvement which comprises a gap sealant at least in the region of the transition between the fl... | 07/28/1987 |
| 4673481 | Reduction pot A reduction pot for the production of aluminum by fused salt electrolysis comprises an outer steel shell, thermal insulation and an inner lining essentially of carbon with iron cathode bars embedded in it. The floor insulation comprises at least in part o... | 06/16/1987 |
| 4647355 | Apparatus for molten salt electrolysis An apparatus for molten salt electrolysis, comprising: an electrolysis chamber which is capable of holding a molten salt of metallic chloride and is closed upwards with a top cover, a cathode placed in said chamber, a lead block of metallic material which... | 03/03/1987 |
| 4556468 | Electrolytic cell In an electrolytic cell having a floor and a boundary for the floor, the cell having a short side and a long side, the improvement including greater compressibility in the boundary on the short side of the cell, as compared to the long side of the cell, i... | 12/03/1985 |
| 4537671 | Cathode pot of an aluminum reduction cell A fused salt reduction cell for producing aluminum comprises a cathode pot having an outer steel shell supported on or by metal structural parts, a thermally insulating layer and an inner lining which is of carbon, is electrically conductive and is resist... | 08/27/1985 |
| 4488955 | Sub-cathodic shield with deformable zones for Hall-Heroult electrolysis cells A subcathodic shield for use with Hall-Heroult electrolysis cells. The shield, which is located below the carbonaceous blocks which make up the cathode, and above the cell housing, comprises at least one continuous steel sheet at least 5 mm thick extendin... | 12/18/1984 |
| 4436597 | Method and apparatus for producing aluminum in an electrolysis cell with tile lining In the electrolytic production of aluminum, in a cell having a side wall including a layer of carbon electrically insulated from a jacket of metal, the improvement including interposing a layer of tile (27) between the carbon layer (23,24) and the metal j... | 03/13/1984 |
| 4421625 | Lower part of a fused salt electrolytic cell A lower part of a fused salt reduction cell used in the production of aluminum, comprises an electrolyte tank supported by metal beams. The tank is made up of an outer steel tank, a thermally insulating layer and an inner electrically conductive carbon li... | 12/20/1983 |
| 4376690 | Cathode for a cell for fused salt electrolysis A solid cathode in a fused salt electrolytic cell for the production of aluminum is made up of individually exchangeable elements (10). These cathode elements are made up of two parts which are rigidly joined together and which are resistant to thermal sh... | 03/15/1983 |
| 4339316 | Intermediate layer for seating RHM tubes in cathode blocks A cathode for an electrolytic cell operated at elevated temperature, the cathode comprising a refractory hard metal (RHM) body embedded in a carbonaceous base. The cathode is provided with an intermediate layer of fibrous material between a side wall of a... | 07/13/1982 |
| 4322282 | Tank for an electrolytic cell During its continuous use, the carbon lining on cells used in the electrolysis of aluminum oxide frequently exhibits cracks which are formed by stresses due to the thermal dilation of the contents of the cell. The present invention prevents the formation ... | 03/30/1982 |
| 4287045 | Cooled electrode adapted to contact molten metal An electrode, especially for use in metallurgical furnaces or the like containing a bath of molten material which extends through and outwardly beyond the furnace wall while its inner end is in contact with the bath of molten material. A cooling device, i... | 09/01/1981 |
| 4124476 | Electrolytic cell for the production of aluminium The amount of bulging and cracking in the carbon floor of an electrolytic reduction cell for the production of aluminium is reduced by the provision of a recess in the steel container which accommodates the carbon floor as it expands. The recess is filled... | 11/07/1978 |
| 4087345 | Potshell for electrolytic aluminum reduction cell A potshell for an electrolytic cell for the electrolytic reduction of aluminum includes a bottom plate, side walls and end walls of steel plates, and also a reinforcing structure surrounding structure. Up against the side walls and end walls, on the outsi... | 05/02/1978 |
