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).
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Patent number: 8176850Abstract: 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: GrantFiled: July 16, 2010Date of Patent: May 15, 2012Assignee: XTEK LimitedInventors: David Thompson, Alexander Krstic
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Publication number: 20110107937Abstract: 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: ApplicationFiled: July 16, 2010Publication date: May 12, 2011Inventors: David Thompson, Alexander Krstic
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Publication number: 20090114112Abstract: 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: ApplicationFiled: October 6, 2008Publication date: May 7, 2009Applicant: XTEK LimitedInventor: Alexander Krstic
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Patent number: 7455015Abstract: 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: GrantFiled: October 19, 2006Date of Patent: November 25, 2008Assignee: Xtek LimitedInventor: Alexander Krstic
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Publication number: 20080092768Abstract: 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: ApplicationFiled: October 19, 2006Publication date: April 24, 2008Inventor: Alexander Krstic
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Patent number: 6923081Abstract: 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: GrantFiled: July 24, 2001Date of Patent: August 2, 2005Assignee: The Commonwealth of AustraliaInventor: Alexander Krstic
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Patent number: 6725572Abstract: 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: GrantFiled: July 9, 2002Date of Patent: April 27, 2004Assignee: The Commonwealth of Australia, The Secretary of DefenceInventor: Alexander Krstic
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Publication number: 20030183025Abstract: 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: ApplicationFiled: January 24, 2003Publication date: October 2, 2003Inventor: Alexander Krstic