Patents by Inventor Darrell A. Frohrib

Darrell A. Frohrib 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).

  • Intelligent insert with integral sensor
    Patent number: 4927300
    Abstract: A high speed steel, carbide or ceramic cutting insert or tool carrying an integrally mounted sensor to permit the sensor to sense and monitor machining phenomena on the cutting insert on a continuous basis to determine whether the cutting insert is operating efficiently and effectively.
    Type: Grant
    Filed: September 21, 1988
    Date of Patent: May 22, 1990
    Assignee: Regents of the University of Minnesota
    Inventors: Subbiah Ramalingam, Darrell A. Frohrib
  • Integral acoustic emission sensor for manufacturing processes and mechanical components
    Patent number: 4927299
    Abstract: An acoustic emission sensor comprising a piezoelectric material that is integral with a tooling or machine element in which acoustic emissions are to be sensed.
    Type: Grant
    Filed: April 24, 1989
    Date of Patent: May 22, 1990
    Assignee: Regents of the University of Minnesota
    Inventors: Subbiah Ramalingam, Darrell A. Frohrib