Patents by Inventor Reuben E. Nyswander

Reuben E. Nyswander 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).

  • Method and apparatus for magnetron coherence
    Patent number: 6914556
    Abstract: A pulsed magnetron is caused to emit a series of RF energy pulses which are phase coherent with an injection signal by supplying the magnetron with a pedestal pulse during low-power signal injection. The pedestal being of a magnitude and duration such that the slow-rise-time pedestal portion holds the magnetron in the Hartree region during the signal injection.
    Type: Grant
    Filed: May 31, 1977
    Date of Patent: July 5, 2005
    Assignee: The United States of America as represented by the Secretary of the Navy
    Inventor: Reuben E. Nyswander
  • Hydrogen thyratron modulator
    Patent number: 5585997
    Abstract: A single resonant DC charging circuit provides both the power and timing for the pedestal insertion is, likewise, controlled by a single trigger circuit input and by a saturable reactor which controls the firing of a thyratron switch.
    Type: Grant
    Filed: October 22, 1979
    Date of Patent: December 17, 1996
    Inventor: Reuben E. Nyswander
  • Sequentially triggering two or more hydrogen thyratrons with precision timing
    Patent number: 4119917
    Abstract: Two or more hydrogen thyratrons sequentially triggered with precision timing. The first tube is triggered and provides a long, low power, slowly rising pulse to a load. Approximately midway in said pulse the second tube is made to conduct, providing a short, high power pulse to the load. The second tube is triggered at a predetermined time delay after the first tube in response to the positive swing of the LC resonant circuit output.
    Type: Grant
    Filed: November 3, 1977
    Date of Patent: October 10, 1978
    Inventors: Reuben E. Nyswander, Cass R. Roquemore
  • Microwave generator
    Patent number: 4109216
    Abstract: An active radar transmitter is disclosed having both long pulse and short lse operational modes. The transmitter is configured to switch between the operational modes with a minimum of circuitry to permit a single radar system to be used for long-range search and short-range, high resolution search.
    Type: Grant
    Filed: May 31, 1977
    Date of Patent: August 22, 1978
    Assignee: The United States of America as represented by the Secretary of the Navy
    Inventor: Reuben E. Nyswander
  • Thin foil pulse transformer coil for reducing distributed and leakage inductance
    Patent number: 4092621
    Abstract: A method of winding pulse transformers with copper tape or foil and bring out the leads directly from the winding on strip transmission line. This technique minimizes distributed inductance and leakage inductance of the leads connecting the transformer to external circuitry. It is particularly useful in high step-up ratio pulse transformers and/or pulse transformers in which the output pulse must have a very short rise time and fall time.
    Type: Grant
    Filed: November 18, 1976
    Date of Patent: May 30, 1978
    Assignee: The United States of America as represented by the Secretary of the Navy
    Inventors: Reuben E. Nyswander, Paul E. Stewart
  • Short pulse magnetron transmitter
    Patent number: 4051439
    Abstract: A magnetron transmitter having a two-stage modulator, one stage generating long, slowly rising, low power pulse, and the other generating a short, high power pulse, whereby high resolution is obtainable without the use of pulse compression techniques.
    Type: Grant
    Filed: November 2, 1972
    Date of Patent: September 27, 1977
    Assignee: The United States of America as represented by the Secretary of the Navy
    Inventor: Reuben E. Nyswander
  • Short pulse solid state-magnetic modulator for magnetron transmitter
    Patent number: 4042837
    Abstract: A solid state, magnetic modulator for a magnetron transmitter having a poon of its storage circuit coupled to discharge through a series of SCR switching modules such that the charge on the remainder of the storage circuit and the discharge overshoot are additive to provide a high power pulse of extremely short duration to the magnetron.
    Type: Grant
    Filed: November 15, 1976
    Date of Patent: August 16, 1977
    Assignee: The United States of America as represented by the Secretary of the Navy
    Inventor: Reuben E. Nyswander