| Class / Patent application number | Description | Number of patent applications / Date published |
|---|
| 266227000 | By separating metal in a molten mass from undesired material, e.g., slag | 11 |
| 20090057965 | FURNACE FILTRATION SYSTEM FOR MOLTEN METAL - A furnace filtration system for improving the speed and efficiency of a molten metal centrifugal impeller pump contained within a non-ferrous molten metal furnace. The system includes a filtration well located upstream of the pump well. The filtration well includes a filter having a plurality of through filter passages that are sized to prevent any solid contaminants that are larger than the pump's impeller openings from passing therethrough. By preventing any contaminants that cannot pass through the pump, the pump can be run at a higher speed. A furnaces efficiency increases with the centrifugal pump's efficiency increases with its centrifugal pump's speed along with the flow and pressure. Increased flow and pressure increases a furnace's efficiency by a) increasing the melting rate; b) decreasing the energy lost by reducing the metal temperature stratification; and c) reducing the contaminants increases the quality of the metal produced while reducing the amount of nitrogen and chlorine needed to clean the metal. | 03-05-2009 |
| 20100007068 | APPARATUS FOR PRECIPITATION/SEPARATION OF EXCESS COPPER IN LEAD-FREE SOLDER - An apparatus for depositing and separating excess copper dissolved in molten lead-free solder containing tin as the main element is provided. An apparatus | 01-14-2010 |
| 20100176542 | FILTER DEVICE FOR MOLTEN METAL FILTRATION - A filter for molten metal, the filter comprising a perforated surface and the perforated surface retaining a filter media for contact with a molten metal passing in use across the perforated surface between perforations of the perforated surface. | 07-15-2010 |
| 20100187732 | SOLDER RECOVERY DEVICE - A solder recovery device includes a melter which melts solder dross stored in a melting crucible, an agitation unit which agitates the melted solder dross, so as to separate the melted solder dross up and down into an oxidized residue and a recycled solder in the melting crucible, and a suction unit which sucks the oxidized residue generated by the agitation, the suction unit sucking the oxidized residue in an upper portion of the melting crucible to be removed. | 07-29-2010 |
| 20100194007 | NOVEL FILTRATION SYSTEM FOR LARGE CAST IRON CASTINGS - An improved filter assembly for molten metal is described. The assembly has a canister with at least one port wherein the port allows filtered molten metal to flow from the canister. A plurality of filter elements is in the canister wherein the filter elements separate a volume of the canister into a primary chamber and a secondary chamber wherein the secondary chamber is in direct flow communication with the port. A ported cover is over the canister wherein the ported cover prohibits unfiltered molten metal from flowing directly into the secondary chamber. The molten metal flows from the primary chamber to the secondary chamber through a filter element. | 08-05-2010 |
| 20100244339 | FILTER HAVING MULTILAYERED STRUCTURE FOR FILTERING IMPURITY PARTICLES FROM MOLTEN METAL - A filter has a multi-layered structure for removing impurity particles from a molten metal. The filter includes: a plurality of filter layers sequentially disposed along the flow direction of the molten metal in a downward direction and comprising a plurality of pore channels, wherein the filter layers disposed upstream comprise larger pore channels than those of the filter layers disposed downstream. | 09-30-2010 |
| 20110084430 | Contoured Molten Metal Filter Cups - Contoured molten metal filter cups having an interstitial flow space that is maintained between the inner-wall of a molten metal pouring cone, riser sleeve or mold and the outer wall of the filter cup are disclosed. The interstitial space provided by the contoured filter cups results in significantly increased molten metal throughput during casting operations, while simultaneously providing an increased level of filtering efficiency. | 04-14-2011 |
| 20120025434 | METHOD FOR THE PRODUCTION OF A REFRACTORY FILTER - A method for the production of closed edge filters suitable for filtering molten metal and filters made by such a method. The method, comprises:
| 02-02-2012 |
| 20140284853 | METHOD FOR THE PRODUCTION OF A REFRACTORY FILTER - A method for the production of closed edge filters suitable for filtering molten metal and filters made by such a method. The method comprises: providing a reticulated foam substrate having at least one first surface for forming a side face of the filter and two opposed second surfaces for forming the through-flow faces of the filter; applying a liquid comprising an organic coating component to the first surface; solidifying the organic coating component to form a filter precursor having a volatilisable coating on the first surface; impregnating the filter precursor with a slurry comprising particles of a refractory material, a binder and a liquid carrier; and drying and firing the impregnated filter precursor to form the filter having a closed edge. | 09-25-2014 |
| 20150145186 | Higher Strength, Mullite-Based Iron Foundry Filter - A ceramic foam filter and method of making the filter is described. The filter comprises: a sintered reaction product of: 35-75 wt % aluminosilicate; 10-30 wt % colloidal silica; 0-2 wt % bentonite; and 0-35 wt % fused silica; wherein the ceramic foam filter has less than 0.15 wt % alkali metals measured as the oxide and a flexural strength of at least 60 psi measured at 4 minutes at 1428° C. | 05-28-2015 |
| 266229000 | By baffle means | 1 |
| 20100301528 | CERAMIC FILTER COMPRISING A CARBON COATING AND A METHOD FOR MANUFACTURING THE SAME - The present invention relates to a ceramic filter suitable for filtering molten metal, wherein said filter comprises a carbon coating and refractory materials bonded by ceramic binders, and said carbon coating is coated on the refractory materials which are bonded by ceramic binders. Furthermore, the present invention relates to the method for manufacturing said filter. The filter of the present invention has very high mechanical strength and stable quality, the preparation of which is more economic. | 12-02-2010 |
