Patents Represented by Law Firm Kalow Springut & Bressler LLP
  • Patent number: 6074454
    Abstract: The invention relates to bullets having increased frangibility (or which can be easily fragmented) and to materials and processes for the manufacture of such bullets. The bullets of the present invention are typically made from copper or copper alloy powders (including brass, bronze and dispersion strengthened copper) which are pressed and then sintered under conditions so as to obtain bullets with the desired level of frangibility. In preferred embodiments of the invention, the bullets also contain several additives that increase or decrease their frangibility.
    Type: Grant
    Filed: July 11, 1996
    Date of Patent: June 13, 2000
    Assignee: Delta Frangible Ammunition, LLC
    Inventors: John T. Abrams, Anil V. Nadkarni, Roy Kelly
  • Patent number: 5976216
    Abstract: Powder metallurgically produced ferritic stainless steel articles are strengthened by alloying the ferritic material with a small amount of nickel (up to 3.0% by weight). Alloying is carried out by either admixing nickel powder to the ferritic alloy powder or by pre-alloying the stainless steel powder with nickel. Conventional sintering procedures, either in a hydrogen atmosphere or in a partial vacuum, are applicable. High strength stainless steel parts made in this manner are suitable for demanding applications, including automotive exhaust flanges and HEGO bosses.
    Type: Grant
    Filed: February 24, 1997
    Date of Patent: November 2, 1999
    Assignee: OMG Americas, Inc.
    Inventors: Prasan K. Samal, Erhard Klar