Patents by Inventor Steven E. Havelka

Steven E. Havelka 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: 7868983
    Abstract: The invention relates generally to a modular display panel for enclosing Commercial-Off-The-Shelf (“COTS”) display technologies. More particularly, the invention relates to a modular display panel for housing COTS light emitting or transmitting display subassemblies such as Liquid Crystal Displays (LCD) for military and other severe environments. The modular display assembly can comprise a base plate, a first frame, a window, a second, a circuit located, and a plurality of light emitting diodes mounted on the circuit board. The COTS light emitting or transmitting display subassembly can be connected to the second frame.
    Type: Grant
    Filed: July 12, 2007
    Date of Patent: January 11, 2011
    Assignee: Litton Systems, Inc.
    Inventors: Steven E. Havelka, Ragini Saxena, Thomas Loo, Thomas McLean, Ban S. Bong
  • Publication number: 20090015998
    Abstract: The invention relates generally to a modular display panel for enclosing Commercial-Off-The-Shelf (“COTS”) display technologies. More particularly, the invention relates to a modular display panel for housing COTS light emitting or transmitting display subassemblies such as Liquid Crystal Displays (LCD) for military and other severe environments. The modular display assembly can comprise a base plate, a first frame, a window, a second, a circuit located, and a plurality of light emitting diodes mounted on the circuit board. The COTS light emitting or transmitting display subassembly can be connected to the second frame.
    Type: Application
    Filed: July 12, 2007
    Publication date: January 15, 2009
    Applicant: Litton Systems Inc.
    Inventors: Steven E. Havelka, Ragini Saxena, Thomas Loo, Thomas McLean, Ban S. Bong
  • Patent number: 7184363
    Abstract: An apparatus designed to float on or in a liquid has at least two buoyant members. The apparatus utilizes relative motion between the buoyant members to generate power, and the buoyant members are coupled to the apparatus in such a manner that surface movement of a fluid that the apparatus is floating in causes relative motion between the buoyant members. The apparatus may be a housing that includes an electrical apparatus within it, with the electrical apparatus being powered directly or indirectly by power generated by the floating apparatus. The apparatus may be a sonobuoy, and may include a sensor array hanging from a floating housing that includes the at least two buoyant members.
    Type: Grant
    Filed: January 10, 2005
    Date of Patent: February 27, 2007
    Assignee: Northrop Grumman Corporation
    Inventors: Nicholas J. Szegedi, Steven E. Havelka
  • Patent number: 7173678
    Abstract: A modular display assembly comprising a light emitting or transmitting display panel and a glass panel wherein: the display and glass panel are separated from each other by a frame assembly; and the display is coupled to the frame assembly by at least one elastic isolator.
    Type: Grant
    Filed: June 25, 2004
    Date of Patent: February 6, 2007
    Assignee: Northrop Grumman Corporation
    Inventors: Steven E. Havelka, Albert V. Scappaticci, Thomas Loo, Ban S. Bong, Ragini Saxena
  • Patent number: 7167309
    Abstract: Apparatus and methods relating to display stacks wherein one or more index matching layers are utilized to minimize reflectance at the boundaries of otherwise adjacent layers. More particularly, the present invention is directed to methods and apparatus relating to a multilayer display stack comprising a glass layer, a first index matching layer, a first intermediate layer, a second index matching layer, a second intermediate layer, and a light emitting display panel wherein: the glass layer, first index matching layer, first intermediate layer, second index matching layer, and second intermediate layer are each transparent or translucent, and comprise an index of refraction; the index of refraction of the first index matching layer is between the index of refraction of the glass layer and the first intermediate layer; and the index of refraction of the second index matching layer is between the index of refraction of the first intermediate layer and the second intermediate layer.
    Type: Grant
    Filed: June 25, 2004
    Date of Patent: January 23, 2007
    Assignee: Northrop Grumman Corporation
    Inventors: Ragini Saxena, Ban S. Bong, Steven E. Havelka, Thomas Loo, Albert V. Scappaticci
  • Patent number: 3971186
    Abstract: A wedge lock unit is disclosed for clamping a subsystem chassis with two outwardly extending spaced apart flanges to a system main frame, from which a single flange or tab extends outwardly. The wedge lock unit includes a stationary member which is fixedly attached to one of the flanges of the subsystem chassis. The stationary member has two opposite wedged or sloping sides along which two movable wedging members with mating sloping sides rest. A drive mechanism, in the form of a rotatable screw, is used to apply a force, resulting in a clamping force, which urges the movable wedging members toward the tab of the main frame, which is inserted between the wedge lock unit and the other flange of the subsystem chassis, until the tab becomes clamped between the movable wedging members of the wedge lock unit and the other flange of the subsystem chassis. Spring means are provided which produce a reaction force on the movable wedging members. The reaction force direction is opposite the clamping force direction.
    Type: Grant
    Filed: August 13, 1975
    Date of Patent: July 27, 1976
    Assignee: Electronic Memories and Magnetics Corporation
    Inventors: Steven E. Havelka, Paul L. Graham, Carl L. Matschke