Patents by Inventor Gerald P. Grill

Gerald P. Grill 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).

  • Double-tuned output circuit for high power devices using coaxial cavity resonators
    Patent number: 4184123
    Abstract: Coaxial, one-quarter wavelength resonant primary and secondary resonators are employed in conjunction with a tetrode tube to provide, for example, 55 Kw (kilowatts) of output power for VHF, high-band television broadcasting. Coupling between the two resonators is accomplished by connecting an inductance between the center conductors of the resonators. The effective inductance of this connection is varied (and thus the coupling of the resonator circuits is also varied) by the addition of a variable capacitor in series with the inductive connection.
    Type: Grant
    Filed: September 19, 1977
    Date of Patent: January 15, 1980
    Assignee: RCA Corporation
    Inventors: Gerald P. Grill, Claude E. Doner