Patents by Inventor Mark A. Chamarro

Mark A. Chamarro has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Patent number: 5620043
    Abstract: A transfer system for delivering molten metal against gravity from a pressurized furnace to a mold, comprising: a ceramic lined refractory metal gatebox adapted to sit on or above the furnace, the gatebox having one or more openings at its top for communicating with the mold and having a plurality of metal transfer openings along its bottom; a stalk tube depending from each of the gatebox bottom openings, each stalk tube being effective to extend into at least the upper region of the molten metal within the furnace; a sealing gasket between the stalk tube and gatebox; imposing a first fluid pressure on the molten metal in the furnace to gradually force the molten metal up through the stalk tubes into the gatebox to substantially fill same, said stalk tubes promoting a convection circulation of metal between molten metal between the furnace and gatebox to retain the temperature of the molten metal in the gatebox at a difference of no greater than 15.degree.-15.degree. F.
    Type: Grant
    Filed: June 9, 1995
    Date of Patent: April 15, 1997
    Assignee: Ford Motor Company
    Inventors: Mark A. Chamarro, Kenneth D. Clark