Bizarre Patents
A forehead support apparatus for resting a standing users forehead against a wall above a bathroom commode or urinal or beneath a showerhead.
PatentStorm News
Make the Most of Our Site
See this month's Top Inventors and Most Cited Patents.
Stay on top of the latest innovations by subscribing to an RSS feed.
Registered users: Manage your profile.
| Number | Title | Issue Date |
| 7378009 | Method of controlling an aluminum cell with variable alumina dissolution rate A method of controlling an aluminum reduction cell including the following steps: maintaining alumina concentration within preset limits by alternating base, underfeed and overfeed modes; measuring cell voltage and potline amperage... | 05/27/2008 |
| 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 |
| 7288180 | Electric current control method and apparatus for use in gas generators The invention provides a method and apparatus for current control in gas generators capable of generating a fluorine or fluoride gas by and in which the electrolysis can be maintained in an optimum condition, stable operation is possible and no manpower is demanded.... | 10/30/2007 |
| 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 |
| 7208075 | Reduction of metal oxides in an electrolytic cell A method of reducing a metal oxide in a solid state, in an electrolytic cell, is provided, as is an electrolytic cell suitable for performing the method. The cathode of the electrolytic cell is formed at least in part from the metal oxide to be reduced, and the elec... | 04/24/2007 |
| 7192511 | Method for regulating an electrolytic cell The invention relates to a regulation method for an electrolytic cell for the production of aluminium by means of reduction of alumina dissolved in a molten cryolite bath, wherein a solidified bath ridge is formed on the internal walls of the pot, a quantity B, refe... | 03/20/2007 |
| 7175749 | Method and device for detecting anode effects of an electrolytic cell for aluminum production Process for early detection of an anode effect in an aluminum production cell based on molten salt electrolysis. The cell comprises at least one anode, at least one cathode and cathode connecting conductors and anode connecting conductors. The process comprises: | 02/13/2007 |
| 7135104 | Method for regulating an electrolysis cell The invention relates to a regulation method for an electrolytic cell for the production of aluminium by means of reduction of alumina dissolved in a molten cryolite bath and comprises the addition, in the electrolyte bath, during pre-determined time intervals p ref... | 11/14/2006 |
| 7124040 | Method of monitoring a fuel cell unit In a method of monitoring a fuel cell unit, at least one pair of measured values, including a measured current value and a measured voltage value (Iactual, Uactual) are determined at the outputs of the fuel cell unit. The measured voltage value... | 10/17/2006 |
| 7122109 | Method for the improvements of current efficiency in electrolysis The invention relates to a method for the improvement of current efficiency in electrolysis. According to the method, a theoretical cell voltage is first calculated, which is compared with the measured voltage. The cumulative difference between the theoretical and m... | 10/17/2006 |
| 7112269 | Measuring duct offgas temperatures to improve electrolytic cell energy efficiency Operations in a cell for electrolytic production of aluminum are controlled by establishing a standard rate of addition of aluminum fluoride to a molten electrolyte covered by a crust; establishing a target temperature for a duct carrying offgas from a chamber conta... | 09/26/2006 |
| 7036097 | Method for designing a cascade of digital filters for use in controling an electrolysis cell A method for designing a cascade of digital filters for use in the control of an electrolytic reduction cell by specifying the frequency and time response characteristics of the transfer function of the cascade of digital filters. The digital filters are exponential... | 04/25/2006 |
| 7001497 | Process and apparatus for positioning replacement anodes in electrolytic cells A spent anode is replaced with a new anode in an electrolysis cell having an anode bus bar and an anode rod contacting the bus bar. A desired distance (D4) from the bus bar to a reference point on or adjacent to an anode rod for the new anode is calculated, t... | 02/21/2006 |
| 6942381 | Molten cryolitic bath probe A method and apparatus for accurately measuring superheat, bath ratio and alumina concentration in an aluminum smelting bath. In one embodiment, a reusable probe determines the bath temperature and bath sample superheat. In other embodiments, the probe also determin... | 09/13/2005 |
| 6620309 | Method for monitoring aluminum electrolytic cells A measuring method is provided for monitoring of aluminum electrolysis cells, together with a corresponding measurement arrangement that includes an immersion sensor. In order to obtain reproducible measurements, the bath electrode of the immersion sensor... | 09/16/2003 |
| 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 |
| 6361678 | Method of detecting a short incident during electrochemical processing and a system therefor The present invention provides a method of detecting a short incident in an electrochemical cell (e.g., a Simons electrochemical fluorination cell or bipolar flow cell) using means for detecting vibration to detect vibration of an external piece on the ce... | 03/26/2002 |
| 6299742 | Apparatus for metal extraction An amperometric in situ apparatus and technique for measuring the concentrations and transport properties of easily dissociable oxides in slags is described. The technique consists of a combination of different measurements utilizing an electrolyte to sep... | 10/09/2001 |
| 6183620 | Process for controlling the A1F3 content in cryolite melts A process is provided for controlling the AlF3 content in cryolite melts for aluminum reduction, wherein the temperature of the melt is measured. In order to produce a very precise process which makes it possible to perform the aluminum reducti... | 02/06/2001 |
| 6136177 | Anode and cathode current monitoring The present invention provides a method and apparatus for determining the current densities in an alumina reduction cell by the measuring of magnetic fields without contact with the anodes or cathodes. The current density is modelled by determining the cu... | 10/24/2000 |
| 6126809 | Method for controlling the feed of alumina to electrolysis cells for production of aluminum A method is described for controlling the supply of aluminium oxide to electrolysis cells for the production of aluminium in which the control is based on measurement of the electrical resistance between the electrodes of the electrolytic furnace and in w... | 10/03/2000 |
| 6010611 | Measurement of alumina in reduction pots This invention provides apparatus and a method for measuring the concentration of alumina in a molten electrolyte in a smelter. A test anode (101) (a mimic of the actual cell anode) supplied from a computer-controlled voltage source (303) with several to ... | 01/04/2000 |
| 5976345 | Method and apparatus for metal extraction and sensor device related thereto An amperometric in situ apparatus and technique for measuring the concentrations and transport properties of easily dissociable oxides in slags is described. The technique consists of a combination of different measurements utilizing an electrolyte to sep... | 11/02/1999 |
| 5415742 | Process and apparatus for low temperature electrolysis of oxides A process for electrowinning metal in a low temperature melt is disclosed. The process utilizes an inert anode for the production of metal such as aluminum using low surface area anodes at high current densities.... | 05/16/1995 |
| 5394749 | Method and apparatus for detecting the position of fluid-fluid interfaces Precise information is obtainable concerning the position of a fluid-fluid interface (28, 33), such as between a gas and a liquid or between liquids. Such information is important for the control and automation of molten metal refining processes. Specific... | 03/07/1995 |
| 5294306 | Electrolytic removal of magnesium from molten aluminum Method and apparatus for controlling the temperature of a molten salt, electrolytic demagging cell wherein an operating condition of the cell (e.g., current, temperature, etc.) is measured and a cathode immersed in the cell's electrolyte is moved to and f... | 03/15/1994 |
| 5094728 | Regulation and stabilization of the AlF3 content in an aluminum electrolysis cell A method is used for regulating and stabilizing an AlF3 content (c), which is at least about 10% by weight, in the bath of an electrolysis cell for the production of aluminum from alumina dissolved in a cryolite melt. The individual state of an alum... | 03/10/1992 |
| 5089093 | Process for controlling aluminum smelting cells A process for controlling an aluminum smelting cell comprising monitoring the cell voltage and current, alumina dumps, additions, operations and anode to cathode distance movements, continuously calculating the cell resistance and the bath resistivity fro... | 02/18/1992 |
| 4992146 | Method for setting electrodes in aluminum electrolysis cells A method is proposed for the setting of electrodes in electrolysis cells, especially the setting of carbonaceous anodes (3) in cells (1) for producing aluminium according to the Hall-Heroult process, where the cathode of the cells contains a bath (13) of ... | 02/12/1991 |
| 4921584 | Anode film formation and control A protective film is created about the anode within a cryolite-based electrolyte during electrolytic production of aluminum from alumina. The film function to minimize corrosion of the anode by the cryolitic electrolyte and thereby extend the life of the ... | 05/01/1990 |
| 4867851 | Process for regulating the acidity of all-Heelectrolytic cells The invention relates to a process for regulating the acidity of the electrolytic bath by recycling fluorinated effluents emitted by the Hall-Heroult electrolytic cells for the production of aluminum, in which said fluorinated effluents are collected, by ... | 09/19/1989 |
| 4857157 | Process and apparatus for controlling solid electrolyte additions to electrolytic cells for aluminum production Process and apparatus for controlling solid electrolyte additions to electrolytic cells for aluminum production. The invention relates to a process for controlling solid electrolyte additions to a cell for producing aluminum by the electrolysis of alumina ... | 08/15/1989 |
| 4814050 | Estimation and control of alumina concentration in hall cells A method of estimating and controlling the concentration of alumina in the bath of a Hall cell. The method includes the use of an estimator that employs two sets of equations, namely, a time update algorithm that contains a dynamic model of the alumina ma... | 03/21/1989 |
| 4808283 | Method of producing a high purity aluminum-lithium mother alloy A method of producing high purity aluminum-lithium mother alloys essentially free from sodium, potassium and calcium, which comprises electrolyzing mixed molten salts consisting essentially of lithium chloride and potassium chloride preferably under a cat... | 02/28/1989 |
| 4786379 | Measuring current distribution in an alumina reduction cell A method and apparatus are disclosed for measuring the current distribution in an alumina reduction cell. The apparatus includes sensors attached to the anodes of the cell, a remote computer system for receiving and correlating data received from the sens... | 11/22/1988 |
| 4764257 | Aluminum reference electrode A stable reference electrode for use in monitoring and controlling the process of electrolytic reduction of a metal. In the case of Hall cell reduction of aluminum, the reference electrode comprises a pool of molten aluminum and a solution of molten cryol... | 08/16/1988 |
| 4752362 | Detecting and estimating shorting phenomena in hall cells and control of cell anodes in response thereto A method of controlling interelectrode distance when a short occurs between an anode and the cathode metal pad of an electrolytic cell. Anode current data is provided by sampling anode current at a relatively high frequency, and noting any substantial ins... | 06/21/1988 |
| 4675081 | Controlling aluminium reduction cell operation A method of determining the depth of the molten electrolyte layer in an aluminium electrolytic reduction cell, and using the measurement to control the operation of the cell, is based on the fact that when an anode is raised, the current passing through i... | 06/23/1987 |
| 4668350 | Controlling AlF3 addition to Al reduction cell electrolyte A method for controlling the rate of aluminum fluoride addition to a cryolite-based electrolyte of an aluminum electrolytic reduction cell makes use of the known ratio between cell temperature and bath (NaF:AlF3) ratio. A target temperature is ... | 05/26/1987 |
| 4668352 | Process and apparatus for automatic increased suction extraction on electrolysis tanks for the production of aluminum A process for automatically going into the mode for increased suction extraction of the gases emitted by the tanks of series for the production of aluminium by igneous electrolysis using the Hall-Heroult process, each tank being closed around its peripher... | 05/26/1987 |
