Patents by Inventor Robert G. Nettles

Robert G. Nettles 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).

  • Analog signal comparator
    Patent number: 3978387
    Abstract: An analog signal comparator receives a variable potential signal at each of two input ports. The signal at each input port is provided to a gate of one programmable unijunction transistor (PUT) and an anode of another PUT to form mirror-image symmetrical connections to the two PUT's. An output signal from either of the PUT's then indicates the lesser of the potentials at a corresponding one of the input terminals. The comparator is preferably intended for use in a closed-loop motor positioning system.
    Type: Grant
    Filed: March 14, 1974
    Date of Patent: August 31, 1976
    Assignee: Johnson Service Company
    Inventor: Robert G. Nettles