Patents by Inventor Nicholas V. Karas

Nicholas V. Karas 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).

  • Intrusion barrier and detection apparatus
    Patent number: 4588988
    Abstract: A ported coaxial cable is positioned atop or wound around a coil of barbed wire and is coextensive therewith. Radio frequency energy applied to the cable is randomly dispersed about the exterior of the coil. Variations in the reflected energy caused by intrusion of the area adjacent the coil, including the areas above or beneath the coil, are processed by detection system signal processing equipment to determine the incidence and location of intrusion events.
    Type: Grant
    Filed: June 6, 1984
    Date of Patent: May 13, 1986
    Assignee: The United States of America as represented by the Secretary of the Air Force
    Inventor: Nicholas V. Karas
  • Intrusion barrier and detection apparatus
    Patent number: 4571578
    Abstract: A ported coaxial cable is positioned within a coil of barbed wire and is coextensive therewith. Radio frequency energy applied to the cable is confined within the tubular volume of the coil. Variations in the reflected energy caused by physical disturbances of the coil are processed by detection system signal processing equipment to determine the incidence and location of intrusion events.
    Type: Grant
    Filed: April 19, 1983
    Date of Patent: February 18, 1986
    Assignee: The United States of America as represented by the Secretary of the Air Force
    Inventor: Nicholas V. Karas
  • Physical deterrent barrier with upward looking detection sensor for intruder detection system
    Patent number: 4327358
    Abstract: A physical deterrent barrier is utilized as an integral part of an intruder detection sensor that provides surveillance of intrusions in the air space over the barrier. The sensor is a corner reflecting antenna that is coextensive with and mounts on the top of the barrier and is integrated into a barbed wire topped chain link fence by arranging appropriately spaced parallel strands of barbed wire into a V configuration so as to effect an electrical corner reflector at the system operating frequency.
    Type: Grant
    Filed: February 29, 1980
    Date of Patent: April 27, 1982
    Assignee: The United States of America as represented by the Secretary of the Air Force
    Inventor: Nicholas V. Karas
  • Intrusion detection system
    Patent number: 4213122
    Abstract: An intrusion detection system utilizes a radio frequency radiative system whose near electromagnetic field is monitored by receiving devices which respond, in a measurable way, to any disturbance of the near electromagnetic field by physical intrusion.
    Type: Grant
    Filed: August 23, 1978
    Date of Patent: July 15, 1980
    Assignee: The United States of America as represented by the Secretary of the Air Force
    Inventors: Walter Rotman, Nicholas V. Karas, Ronald L. Fante, Peter R. Franchi
  • RF loop intruder detection system
    Patent number: 4135185
    Abstract: An RF intruder system utilizes two concentric loops of wire spaced apart for a predetermined magnitude, either of which can transmit and/or receive electromagnetic energy. This area within the loops are to be protected against intrusion. Without intrusion, the received signal is steady. Upon intrusion, there are signal changes which are instantly noted by signal detection and processing.
    Type: Grant
    Filed: October 7, 1977
    Date of Patent: January 16, 1979
    Assignee: The United States of America as represented by the Secretary of the Air Force
    Inventors: Walter Rotman, J. Leon Poirier, Nicholas V. Karas, Peter R. Franchi, Ronald L. Fante