Patents by Inventor Donald S. Blomquist

Donald S. Blomquist 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).

  • Patent number: 4471444
    Abstract: A system is provided for predicting when the failure of a rotating machine ool or part is imminent or when a tool is worn. The system includes a transducer for producing an output related to the workpiece vibrations caused by the machine tool and an analog comparator which compares this output with a threshold signal related to the normal operation of the tool and established by a microcomputer which determines whether further signals which exceed the threshold are produced during each of a predetermined number of subsequent time intervals related to the rotational speed of the tool. If so, a "failure" signal is produced which may be used, for example, to cause retraction of the tool.
    Type: Grant
    Filed: April 2, 1982
    Date of Patent: September 11, 1984
    Assignee: The United States of America as represented by the Secretary of Commerce
    Inventors: Kenneth W. Yee, Donald S. Blomquist