Patents by Inventor Charles Grimm

Charles Grimm 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).

  • Magnetic pressure indicator with thermal lockout
    Patent number: 4172971
    Abstract: A magnetic differential pressure indicator is provided for detecting and indicating a pressure differential thereacross that is greater than a predetermined value in a fluid system. A thermal lockout effective even at high internal fluid pressures prevents false actuation of the magnetic indicating means at low temperatures due to increased viscosity of the system fluid.
    Type: Grant
    Filed: October 30, 1978
    Date of Patent: October 30, 1979
    Assignee: Pall Corporation
    Inventors: Bernard F. Silverwater, Charles Grimm