Did You Know...
...that power steering was invented by independent inventor Francis W. Davis? As chief engineer in the 1920s of the truck division of the Pierce Arrow Motor Car Company, he saw how hard it was to steer heavy vehicles. So that he would be able to keep the profits from his future invention, Davis left his job, rented a small engineering shop in Waltham, Mass., and developed a hydraulic power steering system that led to power steering.
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| Number | Title | Issue Date |
| 7288189 | Multi-faceted intake filter for an aquarium A multi-faceted intake filter for an aquarium includes a top surface portion, a bottom surface portion and a plurality of side surface portions that collectively define a filter body is formed from a compressible foam. The intake filter also includes a bore that ext... | 10/30/2007 |
| 7100669 | Aluminum-silicon casting alloy having refined primary silicon due to pressure Provided herein is a method for refining primary silicon present in a hypereutectic aluminum silicon alloy. The method contemplates the controlled application of pressure to refine the primary silicon during the casting of articles. The application of pressure decre... | 09/05/2006 |
| 6805723 | Method and reactor for production of aluminum by carbothermic reduction of alumina A hollow partition wall is employed to feed carbon material to an underflow of a carbothermic reduction furnace used to make aluminum. The partition wall divides a low temperature reaction zone where aluminum oxide is reacted with carbon to form aluminum carbide and... | 10/19/2004 |
| 6585797 | Recirculating molten metal supply system and method The melter furnace includes a heating chamber (16), a pump chamber (18), a degassing chamber (20), and a filter chamber (22). The pump chamber (18) is located adjacent the heating chamber (16) and houses a molten metal pump (30). The degassing chamber (20... | 07/01/2003 |
| 6521015 | Method and apparatus for treating molten aluminum using improved filter media A method for filtering molten aluminum containing suspended particles using an improved filtration media, the method comprising the steps of providing a source of molten aluminum and providing media having a coating thereon, the coating having a softening... | 02/18/2003 |
| 6468326 | Method for in-line filtering of a liquid metal and implementing device A device for an in-line filtering (10) of a liquid metal, by using only a single installation, to obtain a very good filtering of any liquid metal whatever its melting point. The device comprising a treating chamber (11) made of refractory material and ha... | 10/22/2002 |
| 6440193 | Method and reactor for production of aluminum by carbothermic reduction of alumina The present invention relates to a process for carbothermic production of aluminum where molten bath aluminum carbide and aluminum oxide are produced in a low temperature compartment (2), and continuously flow into a high temperature compartment (3) where... | 08/27/2002 |
| 6231639 | Modular filter for molten metal A filter cartridge for a molten metal filtering system is provided with a modular construction in which the filter elements are adapted to be removably mounted to an end plate. The filter elements may be removed separately from the filter and replaced wit... | 05/15/2001 |
| 6036743 | Method and apparatus for removing liquid salts from liquid metal There is provided a method and apparatus for removing liquid salts from liquid metal utilizing at least one porous substrate which is wettable by liquid salts and is not wettable by liquid metal. The porous substrate is inserted into a container having a ... | 03/14/2000 |
| 5914440 | Method and apparatus removal of solid particles from magnesium chloride electrolyte and molten magnesium by filtration The present invention is concerned with a system for the filtration of molten material. The system is particularly useful for removing MgO impurities present in molten magnesium chloride electrolyte. The invention also comprises a method for removing soli... | 06/22/1999 |
| 5741348 | Method for refining an aluminium scrap smelt A method of refining a melt of aluminum scrap material which comprises metallic aluminum and impurities including iron, in order to obtain a target iron level. The method includes the steps of determining the initial amounts in the melt of Mn, Fe and Si, ... | 04/21/1998 |
| 5676731 | Method for filtering molten metal An apparatus and method for filtering molten metal are disclosed. The apparatus utilizes a continuous filtering medium that is serially indexed into the metal filtering area. The apparatus may be used to filter ferrous and non-ferrous metals, and provides... | 10/14/1997 |
| 5556592 | Filter indexing apparatus for filtering molten metal An apparatus and method for filtering molten metal are disclosed. The apparatus utilizes a continuous filtering medium that is serially indexed into the metal filtering area. The apparatus may be used to filter ferrous and non-ferrous metals, and provides... | 09/17/1996 |
| 5427602 | Removal of suspended particles from molten metal Molten metal containing suspended liquid and solid particles is passed preferably generally upwardly through a porous media so constructed and arranged such that the movement of the molten metal therethrough renders the suspended liquid particles gravity ... | 06/27/1995 |
| 5366209 | Filter for molten metal A filter for molten metal comprises a series of at least two refractory material plates in contact with each other at their periphery and defining between them one or more cavities. Each plate comprises a series of holes through which the molten metal pas... | 11/22/1994 |
| 5336295 | Method for separation and removal of suspended liquid particles from molten metal and associated apparatus Molten metal containing suspended liquid particles is passed preferably generally upwardly through a porous media so constructed and arranged such that the movement of the molten metal therethrough renders the suspended liquid particles gravity separable.... | 08/09/1994 |
| 5336294 | Removal of contaminants from molten metals Particles or inclusions are removed from a molten alloy by contacting the molten alloy with a material selected from the group consisting of aluminium silicate, magnesium silicate, zirconium oxide or a mixture of alumina-calcia and alumina-magnesia.... | 08/09/1994 |
| 5322546 | Filtration of molten material An apparatus for filtering molten material, such as a molten metal-ceramic particle mixture, includes a porous cloth filter located so that the mixture must pass through the cloth filter, and a mechanical filter shaker that prevents the accumulation of fi... | 06/21/1994 |
| 5238571 | Arrangement for separating entrained particles from a stream of molten metal A method and a particle absorber for separating off entrained particles from a stream of molten metal are proposed. The particle absorber has a multiplicity of surfaces within the metal stream produced by means of mechanical separation. This separation le... | 08/24/1993 |
| 5169542 | Filters for light metals Filters for filtering molten light metals comprise a reticular foam having a composition comprising graphite, wollastonite, silica and an alkali phosphate glass. The filters have a low hardness and can readily be machined accurately from large pieces of t... | 12/08/1992 |
| 5168005 | Multiaxially reinforced membrane An ion exchange membrane reinforced with a multiaxial, preferably triaxial, yarn system and an electrolysis process using the membrane in its highly-fluorinated cation exchange form.... | 12/01/1992 |
| 5126047 | Molten metal filter A molten metal filter includes a refractory plate having an opening therethrough. A refractory filter element is attached to the refractory plate and projects therefrom, the exterior surfaces of the filter element generally defining a rectangular prism. T... | 06/30/1992 |
| 5122184 | Molten salt coalescence in molten aluminum A method of treating molten aluminum containing a suspension of finely divided salt particles remaining after filtering molten aluminum is disclosed. The method comprises providing a body of molten aluminum containing the suspension of molten salt particl... | 06/16/1992 |
| 5114472 | Multistage rigid media filter for molten metal and method of filtering A filter system for removing solid impurities from molten metal is described comprising a housing containing vertically disposed rigid coarse filter facing the incoming flow of molten metal and capable of removing solids having a particle size of at least... | 05/19/1992 |
| 5090998 | Purification of metal melts with halogen gas generated in an electrolysis cell The process for purifying a metal melt operates with an active gas introduced into the lower region thereof and consisting of an inert carrier gas and an active, gaseous halogen which are introduced under control into a vessel with the stagnant or flowing... | 02/25/1992 |
| 5045511 | Ceramic bodies formed from yttria stabilized zirconia-alumina Ceramic bodies suitable for use in the filtration of molten metal are formed by immersing a porous organic substrate material in an aqueous thixotropic slurry containing yttria, zirconia and alumina; expelling excess slurry; drying the impregnated materia... | 09/03/1991 |
| 5004545 | Ceramic foam filter apparatus A filter for use in the filtration of molten metals comprises a ceramic foam having a gasket made from fibrous material surrounding its peripheral surface and a metallic foil, such as aluminum foil, fixed to the gasket, for example by means of an adhesive... | 04/02/1991 |
| 4990059 | Method for filtering liquid-phase metals A method and apparatus is provided for filtering liquid-phase metal. The method comprises the steps of: (1) establishing a bath of liquid-phase metal; (2) providing a conduit connecting the bath to a filtering means; and (3) producing a magnetic field wit... | 02/05/1991 |
| 4872908 | Metal treatment A method of forming a filter cake for filtering liquid metal from particles stable within the liquid metal on an inert, liquid metal permeable substrate in the flow path of the liquid metal to be filtered characterized by depositing the particles in the f... | 10/10/1989 |
| 4790873 | Removing inclusions from molten metal The invention provides a method of removing inclusions from molten metal, particularly aluminum, by (a) contacting the molten metal with a medium which retains metal-non-wettable inclusions. The medium may be liquid such as a fused salt mixture; or solid ... | 12/13/1988 |
| 4765833 | Porous ceramic structure and method of filtering aluminum A porous ceramic structure suitable for use as a filter for molten metal, in which a porous ceramic body having pores capable of passing a fluid therethrough is covered with a metal layer over the wall surface of the pores such that a fluid may flow throu... | 08/23/1988 |
| 4761266 | Controlled addition of lithium to molten aluminum Lithium feed to an aluminum-lithium alloy production system is achieved at a highly controlled rate by advancing a plunger at a predetermined volumetric rate into a body of molten lithium retained in a holding vessel to displace the lithium toward an over... | 08/02/1988 |
| 4681152 | Continuous casting aluminum alloy A method is provided for continuously casting aluminum alloys particularly useful for computer memory disk stock by a combination of casting at thinner gauges and much higher speeds than usual. Sheet quality is vastly improved, surface ripples are avoided... | 07/21/1987 |
| 4604368 | Method of producing an aluminium boride A method of producing an aluminum boride (AlB2 or AlB12) in solid form comprises providing a body of molten aluminum containing suspended particles of an aluminum boride, and separating the particles e.g. by filtration from the bulk ... | 08/05/1986 |
| 4591383 | Apparatus and method of filtering molten metal using honeycomb structure of sintered alumina as filter element High purity alumina filters suitable for relatively high temperature molten metal filtering applications are prepared by providing a composition comprising fine grain reactive alumina and a burn out material in amounts sufficient to increase the porosity ... | 05/27/1986 |
| 4572818 | Process for purifying metal compositions Purified metal compositions and metal compositions free of secondary phase material are produced by heating a metal alloy from the nonequilibrium solidus temperature while subjecting the liquid-solid mixture to high pressure and forcing the liquid through... | 02/25/1986 |
| 4568430 | Process for refining scrap aluminum A salt melt of alkali and/or alkali earth chlorides and fluorides, heated to 50°-100° C. above the melting point is employed to purify heavily contaminated scrap aluminum. The scrap aluminum, preheated to 400°-500° C. is added to a melting or holding ... | 02/04/1986 |
| 4504392 | Apparatus for filtration of molten metal An apparatus and method for filtering molten metal is disclosed. The apparatus includes a filtering vessel, a portion of which is a porous filter material. Attached to the rim of the filtering vessel is a shock resistant ring. The filtering vessel is posi... | 03/12/1985 |
| 4494985 | Filtration of inclusions from molten metal alloy The invention provides a filter apparatus and method for removing inclusions from a molten metal alloy and includes a container having an inlet portion and an outlet portion. A filter bed is located within said container, interposed between said container... | 01/22/1985 |
| 4457496 | Filtration block for liquid metals and alloys, with a mechanical and physical-chemical effect The invention concerns a filtration block for liquid alloys and metals, with a mechanical and physical-chemical effect. Agglomerating, for example by sintering, elements of an active mineral compound based on fluorides, results in a porous structure with a hig... | 07/03/1984 |