Patents by Inventor Charles L. Nemnich

Charles L. Nemnich 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).

  • Apparatus and method for measuring movement
    Patent number: 4706498
    Abstract: An accelerometer comprising a ferrofluid coated permanent magnet as a proof mass mounted for substantially friction-free movement in a hollow vessel on which vessel are mounted three coils that are used with an electrical circuit to detect and measure movement of the proof mass in response to an outside force and to return the proof mass to a null position.
    Type: Grant
    Filed: September 23, 1985
    Date of Patent: November 17, 1987
    Assignee: Ferrotec, Inc.
    Inventors: Charles L. Nemnich, Charles D. Hoyt