Patents by Inventor David B. Boswell

David B. Boswell 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).

  • Electrical energy storage type filter
    Patent number: 4328474
    Abstract: The invention is an electrical energy storage type filter which is useful for attenuating harmonic distortion, modulation at high frequencies, line voltage transient sags and surges. The invention structurally consists of a inductance capacitance tank circuit having resistive components and with a resistive element connected in series with the tank circuit. The circuit is tuned to include in its bandwidth the fundamental frequency of the power source and includes in its design consideration of the reactance of the source.
    Type: Grant
    Filed: January 28, 1980
    Date of Patent: May 4, 1982
    Assignee: The United States of America as represented by the Secretary of the Navy
    Inventors: James P. Goodman, David B. Boswell