Patents by Inventor Thaddeus A. Weber

Thaddeus A. Weber 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).

  • DC input circuit with controlled leakage current
    Patent number: 5111070
    Abstract: A DC input circuit provides a digital output dependent on an input voltage spanning a low range and a high range. A first transistor current source provides a bounded leakage current for a low range voltage. A parallel transistor current source in series with a voltage breakdown diode provides a second constant current path for high range voltages through a current sensitive switch. The total input current is thus limited, thereby reducing heat dissipation.
    Type: Grant
    Filed: January 18, 1991
    Date of Patent: May 5, 1992
    Assignee: Allen-Bradley Company, Inc.
    Inventors: Timothy J. Murphy, Thaddeus A. Weber