Patents by Inventor Robert J. Brey

Robert J. Brey 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).

  • Thin walled steel cartridge case
    Patent number: 4041868
    Abstract: A thin walled steel cartridge case having a substantially larger internal volume than a conventional cartridge case. The cartridge case is fabricated from a high strength, heat treated carbon steel or boron steel and the wall contour in the head area is designed to avoid localized high stress. A low friction coating is applied to the outer surface of the cartridge case and serves to reduce stress concentrations in the head area and to reduce extraction force in the event of interference between the case and the chamber during extraction.
    Type: Grant
    Filed: February 5, 1976
    Date of Patent: August 16, 1977
    Assignee: Amron Corporation
    Inventors: Roy E. Rayle, Robert J. Brey, Wilbur John Woodruff