Patents by Inventor Mehroujan Shirvanian

Mehroujan Shirvanian 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).

  • Aluminum cartridge casing for rifles
    Patent number: 8381655
    Abstract: A cartridge casing for rifles is made from a high strength aluminum alloy. A method for making such cartridge casing includes the steps of (a) forming a cylindrical blank from an aluminum alloy having a tensile strength greater than 80,000 psi, and (b) rotating the blank at a rate greater than 500 rpm and forcing the blank into a die, the die having a bore with progressively reduced interior diameters which are less than the external diameter of the blank. In the method, the forcing of the blank into the die results in the finished cartridge casing having a distal end with an external diameter which is less than the external diameter of its proximal end.
    Type: Grant
    Filed: March 28, 2012
    Date of Patent: February 26, 2013
    Assignee: Spears Manufacturing Co.
    Inventors: Douglas Swingley, Robert Wayne Spears, Scott Miller, Mehroujan Shirvanian
  • ALUMINUM CARTRIDGE CASING FOR RIFLES
    Publication number: 20120285345
    Abstract: A cartridge casing for rifles is made from a high strength aluminum alloy. A method for making such cartridge casing includes the steps of (a) forming a cylindrical blank from an aluminum alloy having a tensile strength greater than 80,000 psi, and (b) rotating the blank at a rate greater than 500 rpm and forcing the blank into a die, the die having a bore with progressively reduced interior diameters which are less than the external diameter of the blank. In the method, the forcing of the blank into the die results in the finished cartridge casing having a distal end with an external diameter which is less than the external diameter of its proximal end.
    Type: Application
    Filed: March 28, 2012
    Publication date: November 15, 2012
    Inventors: Douglas Swingley, Robert Wayne Spears, Scott Miller, Mehroujan Shirvanian