Patents by Inventor David Daniel Walker

David Daniel Walker 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).

  • Clogged dust filter monitor
    Patent number: 10639577
    Abstract: A clogged filter detector is provided. In some embodiments, the clogged filter detector may comprise a transmitter, a sensor, and a transmitter resistor array configured to modify the output strength of the transmitter. In some embodiments, the clogged filter detector may comprise a transmitter, a sensor, and a sensor resistor array to configured to adjust the strength of the signal output by the sensor. The clogged filter detector may also include one or more processor configured to adjust the strength of a beam output by the transmitter based on a saturation level.
    Type: Grant
    Filed: January 17, 2019
    Date of Patent: May 5, 2020
    Assignee: Filtersmarts, Inc
    Inventors: David Joel Wilson, Jr., Douglas Morris, David Daniel Walker