Patents by Inventor Dan R. Maxwell

Dan R. Maxwell 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).

  • Publication number: 20250305753
    Abstract: A condensate pan system is disclosed for evaporating a liquid therein by an electric heating element. The pan may include a reed float switch with sealed electrical contacts to detect the level of the liquid in the pan, a thermostat, and a relay with sealed electrical contacts. The relay is configured to close the circuit and provide electrical current to the electric heating element so long as the relay detects electrical continuity with the thermostat and with the reed float switch. If the electrical contacts of the reed float switch opens, which is indicative of a predetermined low liquid level, the relay is configured to open the electrical circuit to cease delivering electrical current to the electric heating element. Likewise, the relay is configured to open the electrical circuit to cease delivering electrical current to the electric heating element if the thermostat detects a temperature that exceeds a predetermined value.
    Type: Application
    Filed: March 31, 2025
    Publication date: October 2, 2025
    Inventors: Ronald R. Barnes, Dan R. Maxwell, Robert K. Cockrell
  • Patent number: D955168
    Type: Grant
    Filed: July 3, 2019
    Date of Patent: June 21, 2022
    Assignee: BACKER EHP INC.
    Inventors: Stacy V. Springer, Dan R. Maxwell, Ronald R. Barnes