Patents by Inventor Thomas G. Drennen

Thomas G. Drennen 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).

  • Force-displacement controller knob
    Patent number: 4050265
    Abstract: A force-displacement controller knob for use in isometric control devices provided. A controller knob component is mounted on existing control shafts and the knob itself contains a pair of compressible, resilient washers separated by and contacting a rigid washer in a chamber in the knob so that force appied in any direction on the knob will be transferred to the control shaft in a resistance ratio determined by the compressibility of the resilient washers.
    Type: Grant
    Filed: August 3, 1976
    Date of Patent: September 27, 1977
    Assignee: The United States of America as represented by the Secretary of the Navy
    Inventors: Thomas G. Drennen, Allen Neander