Patents by Inventor Alexander Krstic

Alexander Krstic 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: 8176850
    Abstract: A multi-piece projectile for a small arms cartridge includes a metal cup that has a bore, a plastic sheath having a through hole and a high-density core. The cup is a cylindrical metal structure having a bore. The sheath is a cylindrical end and a conical end and a through hole. The core is a cylindrical structure having conical end and a blunt end. The projectile is assembled by placing the core in the through hole of the sheath and then pressing the sheath into the bore of the cup. The assembled projectile is attached to the cartridge by crimping the cup to the orifice in the end of the cartridge casing after it is filled with the propellant. When the projectile is fired all of the components remain coupled together but break apart upon impact with a target. Because the core has a higher mass than the other components the components separate very easily, the majority of the kinetic energy remains in the core.
    Type: Grant
    Filed: July 16, 2010
    Date of Patent: May 15, 2012
    Assignee: XTEK Limited
    Inventors: David Thompson, Alexander Krstic
  • Publication number: 20110107937
    Abstract: A multi-piece projectile for a small arms cartridge includes a metal cup that has a bore, a plastic sheath having a through hole and a high-density core. The cup is a cylindrical metal structure having a bore. The sheath is a cylindrical end and a conical end and a through hole. The core is a cylindrical structure having conical end and a blunt end. The projectile is assembled by placing the core in the through hole of the sheath and then pressing the sheath into the bore of the cup. The assembled projectile is attached to the cartridge by crimping the cup to the orifice in the end of the cartridge casing after it is filled with the propellant. When the projectile is fired all of the components remain coupled together but break apart upon impact with a target. Because the core has a higher mass than the other components the components separate very easily, the majority of the kinetic energy remains in the core.
    Type: Application
    Filed: July 16, 2010
    Publication date: May 12, 2011
    Inventors: David Thompson, Alexander Krstic
  • Publication number: 20090114112
    Abstract: A multi-piece projectile for a small arms cartridge includes a metal cup that has a bore, a plastic sheath having a through hole and a high-density core. The cup is a cylindrical metal structure having a bore. The sheath is a cylindrical end and a conical end and a through hole. The core is a cylindrical structure having conical end and a blunt end. The projectile is assembled by placing the core in the through hole of the sheath and then pressing the sheath into the bore of the cup. The assembled projectile is attached to the cartridge by crimping the cup to the orifice in the end of the cartridge casing after it is filled with the propellant. When the projectile is fired all of the components remain coupled together but break apart upon impact with a target. Because the core has a higher mass than the other components the components separate very easily, the majority of the kinetic energy remains in the core.
    Type: Application
    Filed: October 6, 2008
    Publication date: May 7, 2009
    Applicant: XTEK Limited
    Inventor: Alexander Krstic
  • Patent number: 7455015
    Abstract: A multi-piece projectile for a small arms cartridge includes a metal cup that has a bore, a plastic sheath having a through hole and a high-density core. The cup is a cylindrical metal structure having a bore. The sheath is a cylindrical end and a conical end and a through hole. The core is a cylindrical structure having conical end and a blunt end. The projectile is assembled by placing the core in the through hole of the sheath and then pressing the sheath into the bore of the cup. The assembled projectile is attached to the cartridge by crimping the cup to the orifice in the end of the cartridge casing after it is filled with the propellant. When the projectile is fired all of the components remain coupled together but break apart upon impact with a target. Because the core has a higher mass than the other components the components separate very easily, the majority of the kinetic energy remains in the core.
    Type: Grant
    Filed: October 19, 2006
    Date of Patent: November 25, 2008
    Assignee: Xtek Limited
    Inventor: Alexander Krstic
  • Publication number: 20080092768
    Abstract: A multi-piece projectile for a small arms cartridge includes a metal cup that has a bore, a plastic sheath having a through hole and a high-density core. The cup is a cylindrical metal structure having a bore. The sheath is a cylindrical end and a conical end and a through hole. The core is a cylindrical structure having conical end and a blunt end. The projectile is assembled by placing the core in the through hole of the sheath and then pressing the sheath into the bore of the cup. The assembled projectile is attached to the cartridge by crimping the cup to the orifice in the end of the cartridge casing after it is filled with the propellant. When the projectile is fired all of the components remain coupled together but break apart upon impact with a target. Because the core has a higher mass than the other components the components separate very easily, the majority of the kinetic energy remains in the core.
    Type: Application
    Filed: October 19, 2006
    Publication date: April 24, 2008
    Inventor: Alexander Krstic
  • Patent number: 6923081
    Abstract: A surrogate for testing an effect of physical trauma on a whole or portion of a natural biological animal body where the surrogate has a surrogate bone or bones and material replicating the effect of flesh around such a bone or bones. Also disclosed are further parts of a natural body which are replicated with surrogate materials in a surrogate construction including skin, tendons, arteries, and joints between bones as well as sensors for measuring the effect of any trauma caused.
    Type: Grant
    Filed: July 24, 2001
    Date of Patent: August 2, 2005
    Assignee: The Commonwealth of Australia
    Inventor: Alexander Krstic
  • Patent number: 6725572
    Abstract: Footwear (1) to protect a wearer from landmines including a substantialy non-deformable metal sheet (5) below the foot of the wearer shaped and positioned to effect a redirection of any up-welling result of an exploding landmine to a side of the footwear (1) when being worn. The footwear (1) also including an outer hard shell (2) to deflect and direct any initial shock and pressure waves past the body elements of the wearer, the footwear (1) being pivotally connected to an upper protective surround (13).
    Type: Grant
    Filed: July 9, 2002
    Date of Patent: April 27, 2004
    Assignee: The Commonwealth of Australia, The Secretary of Defence
    Inventor: Alexander Krstic
  • Publication number: 20030183025
    Abstract: A surrogate for testing an effect of physical trauma on a whole or portion of a natural biological animal body where the surrogate has a surrogate bone or bones and material replicating the effect of flesh around such a bone or bones. Also disclosed are further parts of a natural body which are replicated with surrogate materials in a surrogate construction including skin, tendons, arteries, and joints between bones as well as sensors for measuring the effect of any trauma caused.
    Type: Application
    Filed: January 24, 2003
    Publication date: October 2, 2003
    Inventor: Alexander Krstic