Patents by Inventor Keith E. Walker

Keith E. 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).

  • Automatic wastewater pipe cleaning system
    Publication number: 20030131886
    Abstract: An automatic wastewater pipe flushing, unclogging, and blockage removal system consisting of a source of compressed gas connected to and releasable into the pipe and release control apparatus including a sensor to detect water backup and a valve operated by the sensor to provide a burst of compressed gas into the pipe in the region of and upstream from the blockage. A timer may be included to regulate the duration of the burst.
    Type: Application
    Filed: January 14, 2002
    Publication date: July 17, 2003
    Inventor: Keith E. Walker