Patents by Inventor David Leonard Irwin

David Leonard Irwin 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).

  • Autonomous sump pump system
    Patent number: 9052226
    Abstract: An autonomous sump (ASP) system is designed to remove water from a sump using a source of power other than commercial electrical power or battery power. The ASP system can be a stand-alone unit or, alternatively, can be used along with a preexisting sump pump system. In some embodiments, the ASP system can provide an alert to a building owner of the ASP system failure.
    Type: Grant
    Filed: March 23, 2012
    Date of Patent: June 9, 2015
    Inventors: David Leonard Irwin, IV, Fitz-William Byrd Taylor, III, William Spencer Irwin
  • Autonomous Sump Pump System
    Publication number: 20120251333
    Abstract: An autonomous sump (ASP) system is designed to remove water from a sump using a source of power other than commercial electrical power or battery power. The ASP system can be a stand-alone unit or, alternatively, can be used along with a preexisting sump pump system. In some embodiments, the ASP system can provide an alert to a building owner of the ASP system failure.
    Type: Application
    Filed: March 23, 2012
    Publication date: October 4, 2012
    Inventors: David Leonard Irwin, Fitz-William Byrd Taylor, III, William Spencer Irwin