Patents by Inventor Ernst T. Sack

Ernst T. Sack 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).

  • Measuring apparatus for measuring the roll gap in gauge-controlled roll stands
    Patent number: 4161885
    Abstract: Apparatus is provided for measuring the roll gap in roll stands with automatic gap control. The apparatus comprises two relatively movable components which may interfit telescopically. The two components have respective measuring surfaces at one of which is located a pulsed ultrasonic signal transmitter. A sound receiver is located either on the same measuring surface or on the other measuring surface. Measuring means are provided for measuring the time taken for the sound pulses to travel between the measuring surfaces.
    Type: Grant
    Filed: May 27, 1977
    Date of Patent: July 24, 1979
    Assignee: Sack GmbH
    Inventors: Ernst T. Sack, Friedrich Nordmeyer, Emil F. Kersting