Patents by Inventor Doyle Ray Ledbetter

Doyle Ray Ledbetter 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).

  • Publication number: 20090218375
    Abstract: There is disclosed herein a Close Proximity Pouring Device to automatically pour molten metal into a mold. The pouring device consists of a pour box equipped with a stopper rod and nozzle to dispense molten metal into a mold. This is accomplished by lowering the pour box so that a truncated conical pour nozzle, which extends below the pour box, is lowered into a truncated conical cavity in the mold without making contact with the mold. Then, when the stopper rod is opened, molten metal flows from the pour box through the nozzle and into the mold. As the molten metal fills the conical void between the nozzle and the mold, a seal is established preventing air from entering the mold. Oxidation and/or gassing of the molten metal entering the mold is minimized reducing the chance of producing defective castings. Once the molten metal seal is achieved between the nozzle and the mold, the metal head in the pouring vessel adds head pressure to improve filling the mold.
    Type: Application
    Filed: March 3, 2008
    Publication date: September 3, 2009
    Inventor: Doyle Ray Ledbetter
  • Publication number: 20090001834
    Abstract: There is disclosed herein a Permanent Magnet powered motor that can be used in many applications. Larger units can be used to power automobiles based on rotor design and strength of magnets while smaller units can provide rotating power similar to any electric motor application. Electric power is not required to operate this motor thus removing the need for electrical power except for resistance components such as lighting.
    Type: Application
    Filed: August 11, 2008
    Publication date: January 1, 2009
    Inventors: Doyle Ray Ledbetter, Doyle Ray Ledbetter, JR.