Patents by Inventor Willard C. Barnard

Willard C. Barnard 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).

  • Fan failure alert for electronic equipment
    Patent number: 5534854
    Abstract: A detection and alarm circuit for protection of electronic components includes a fan motor current sensing resistor for producing a pulse that is amplified and introduced to a frequency-to-voltage converter for generating a filtered and processed voltage level for application to a voltage comparator. A reference voltage circuit supplies a voltage level to the comparator for matching with the filtered and processed voltage level and depending on the mismatch, an output signal is introduced to a transistor switch for operating an alert alarm device.
    Type: Grant
    Filed: July 10, 1995
    Date of Patent: July 9, 1996
    Inventors: Rod J. Bradbury, Willard C. Barnard, Joel F. Wysong