Patents by Inventor Steven R. Zelenak

Steven R. Zelenak 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: 7059249
    Abstract: A plasma injector for use in munitions having a central axis. The plasma injector has a stub case, a tube, an anode, a cathode, and a conductive wire. The tube has a first end, a second end, and a central bore extending therethrough. The tube has at least one aperture that is operably connected to the central bore. The tube is attached to the stub case substantially transverse to the central axis. The anode is positioned proximate the first end. The cathode is positioned proximate the second end. The conductive wire extends through the central bore between the anode and the cathode and operably connects the anode and the cathode.
    Type: Grant
    Filed: January 23, 2001
    Date of Patent: June 13, 2006
    Assignee: United Defense LP
    Inventors: Amir Chaboki, Reed A. McPeak, Michael R. Triviski, Steven R. Zelenak
  • Publication number: 20040221760
    Abstract: A plasma injector for use in munitions having a central axis. The plasma injector has a stub case, a tube, an anode, a cathode, and a conductive wire. The tube has a first end, a second end, and a central bore extending therethrough. The tube has at least one aperture that is operably connected to the central bore. The tube is attached to the stub case substantially transverse to the central axis. The anode is positioned proximate the first end. The cathode is positioned proximate the second end. The conductive wire extends through the central bore between the anode and the cathode and operably connects the anode and the cathode.
    Type: Application
    Filed: January 23, 2001
    Publication date: November 11, 2004
    Inventors: Amir Chaboki, Reed A. McPeak, Michael R. Triviski, Steven R. Zelenak
  • Patent number: 6209460
    Abstract: The invention provides an improved propellant system for firing projectiles in large caliber guns. Strips of energetic propellant are placed in the cartridge case so that the lengths of the strips are parallel to the length of the cartridge. Preferably, the strips are placed in a radially symmetric pattern. The strips provide passageways that allow ignition gasses to flow radially in the cartridge case and along the length of the cartridge case.
    Type: Grant
    Filed: August 9, 2000
    Date of Patent: April 3, 2001
    Assignee: United Defense, L.P.
    Inventors: Brian J. Isle, Amir Chaboki, Steven R. Zelenak
  • Patent number: 6167810
    Abstract: The invention provides an improved propellant system for firing projectiles in large caliber guns. Strips of energetic propellant are placed in the cartridge case so that the lengths of the strips are parallel to the length of the cartridge. Preferably, the strips are placed in a radially symmetric pattern. The strips provide passageways that allow ignition gasses to flow radially in the cartridge case and along the length of the cartridge case.
    Type: Grant
    Filed: December 4, 1998
    Date of Patent: January 2, 2001
    Assignee: United Defense, L.P.
    Inventors: Brian J. Isle, Gerald L. Dittmann, Amir Chaboki, Steven R. Zelenak, Timothy W. Petersen
  • Patent number: 5886290
    Abstract: This disclosure relates to a plasma generation device particularly adapted to an electrothermal-chemical propulsion system. The device comprises a membranous conductive substance having structural compositions which enable the formation of a continuous and volumetrically distributed, segmentally varied plasma arc. The membranous substance is versatile and operates, inter alia, as a fuse wire, plasma incubator, plasma container, plasma distributor, plasma infusion and permeation media as well as a fuel container.
    Type: Grant
    Filed: July 25, 1997
    Date of Patent: March 23, 1999
    Assignee: United Defense, LP
    Inventors: John S. Lindblom, Steven R. Zelenak, Steven M. French, Mark E. Schneider
  • Patent number: 5767439
    Abstract: This disclosure relates to a plasma generation device particularly adapted to an electrothermal-chemical propulsion system. The device comprises a membranous conductive substance having structural compositions which enable the formation of a continuous and volumetrically distributed plasma arc. The membranous substance is versatile and operates, inter alia, as a fuse wire, plasma incubator, plasma container, plasma distributor, plasma infusion and permeation media as well as a fuel container.
    Type: Grant
    Filed: June 7, 1995
    Date of Patent: June 16, 1998
    Assignee: United Defense LP
    Inventors: John S. Lindblom, Steven R. Zelenak, Steven M. French, Mark E. Schneider
  • Patent number: 5503081
    Abstract: This disclosure relates to a plasma generation device particularly adapted to an electrothermal-chemical propulsion system. The device comprises a membranous conductive substance having structural compositions which enable the formation of a continuous and volumetrically distributed plasma arc. The membranous substance is versatile and operates, inter alia, as a fuse wire, plasma incubator, plasma container, plasma distributor, plasma infusion and permeation media as well as a fuel container.
    Type: Grant
    Filed: November 22, 1993
    Date of Patent: April 2, 1996
    Assignee: FMC Corp
    Inventors: John S. Lindblom, Steven R. Zelenak, Steven M. French, Mark E. Schneider
  • Patent number: 5220126
    Abstract: The apparatus and method disclosed herein relates to axially aligned electrical contacts which connect a high electrical power pulse forming network to an electrothermal ammunition integrated plasma injector in a combustion augmented plasma gun for launching projectiles thereof. The contacts transfer high energy, intermittent pulses without arcing because structure provides for axially preloading the contacts to reduce contact resistance, for axially stiffening the contacts to eliminate contact bounce and for providing complementary conical contact surfaces to facilitate a high current density transfer.
    Type: Grant
    Filed: August 23, 1991
    Date of Patent: June 15, 1993
    Assignee: FMC Corporation
    Inventors: Dennis Borgwarth, Mark E. Schneider, Steven R. Stricker, Steven R. Zelenak