Patents by Inventor Harry M. Cronson

Harry M. Cronson 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).

  • Short pulse receiver with anti-jam capability
    Patent number: 4688042
    Abstract: A short pulse radar receiver having a detector with a threshold automatically adjustable with the level of noise and interfering signals. Interfering signals at signal levels which exceed the maximum for which a threshold may be achieved to prevent a false alarm are attenuated prior to coupling to the variable threshold detector by an attenuator variable automatically in accordance with the received signal level.
    Type: Grant
    Filed: October 8, 1981
    Date of Patent: August 18, 1987
    Assignee: Sperry Corporation
    Inventors: Harry M. Cronson, Richard M. Mara
  • Baseband detector with anti-jam capability
    Patent number: 4688041
    Abstract: A method and apparatus for detecting a short pulse signal in the presence of an interfering jamming signal wherein the jamming signal is utilized as the local oscillator in a diode mixer when it is received at a sufficiently high level for efficiently mixing with a short pulse signal. When the received jamming level is insufficient to act as a local oscillator, an internal local oscillator signal is coupled to the diode to maintain an efficient mixing operation.
    Type: Grant
    Filed: October 8, 1981
    Date of Patent: August 18, 1987
    Assignee: Sperry Corporation
    Inventors: Harry M. Cronson, Gerald F. Ross
  • Shielded surface wave transmission line
    Patent number: 4291289
    Abstract: A surface wave transmission line enclosed in a dielectric shield and supported within the enclosure at a predetermined distance from the base of the enclosure. The enclosure being constructed such that the surface wave transmission line may be in close proximity to reflecting objects positioned along the enclosure and at a predetermined distance from a mounting structure.
    Type: Grant
    Filed: March 17, 1980
    Date of Patent: September 22, 1981
    Assignee: Sperry Corporation
    Inventors: Basrur R. Rao, Gerald F. Ross, Harry M. Cronson
  • Collision avoidance system using short pulse signal reflectometry
    Patent number: 4254418
    Abstract: A collision avoidance system for rapid transit vehicles employing baseband radar principles in which signals with duration in the order of nanoseconds are transmitted down track along a surface wave transmission line. Reflections from a passive target located on the preceding vehicle are processed to establish the distance between the vehicles to within an accuracy previously unachievable.
    Type: Grant
    Filed: August 23, 1978
    Date of Patent: March 3, 1981
    Assignee: Sperry Corporation
    Inventors: Harry M. Cronson, Gerald F. Ross, Basrur R. Rao, Werner Lerchenmueller, Prentis B. Drew
  • Transreflector scanning antenna
    Patent number: 4214248
    Abstract: A 360 degree fan beam scanning antenna which includes a transreflector created by a plurality of reflecting elements arranged on a surface of revolution formed about a generating axis and a feed antenna rotatable about the internal focal circle of the transreflector that provides an illumination beam for the transreflector which minimizes spillover and antenna pattern skewing.
    Type: Grant
    Filed: June 22, 1978
    Date of Patent: July 22, 1980
    Assignee: Sperry Corporation
    Inventors: Harry M. Cronson, David Lamensdorf, Gerald F. Ross
  • Shielded surface wave transmission line
    Patent number: 4188595
    Abstract: A continuous, self-supporting microwave transmission line along which ultra short pulses of microwave signals may propagate over distances of several hundred feet with minimum pulse distortion and signal attenuation. Propagation along the line is accomplished by an electromagnetic field thereabout that is sensitive to objects positioned in the proximity of the transmission line, a characteristic that may be utilized in short pulse reflectometer systems for monitoring and control of vehicles on a prescribed course.
    Type: Grant
    Filed: August 21, 1978
    Date of Patent: February 12, 1980
    Assignee: Sperry Corporation
    Inventors: Harry M. Cronson, Basrur R. Rao, Gerald F. Ross
  • Short pulse sequential waveform generator
    Patent number: 3983416
    Abstract: A sequence of short pulses are produced from a single input pulse of longer duration by use of a plurality of step recovery diodes connected in shunt across a transmission line. The number of individual pulses produced in response to each applied longer pulse is determined by the number of step recovery diodes shunting the transmission line and the distance between adjacent pulses in the sequence is determined by the spacing between the diodes producing the adjacent pulses.
    Type: Grant
    Filed: December 30, 1974
    Date of Patent: September 28, 1976
    Assignee: Sperry Rand Corporation
    Inventor: Harry M. Cronson