Patents by Inventor Walter Dea McDonald

Walter Dea McDonald 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).

  • Automated warning system for waterski boats
    Patent number: 8368560
    Abstract: There is provided an automated warning system which includes a receiver/controller, an actuator, one or more relays electrically connected to both the receiver and the linear actuator, a flag holder and a mechanical linkage connecting the linear actuator to the flag holder such that movement of the linear actuator causes the flag holder to move between raised and lowered positions.
    Type: Grant
    Filed: December 11, 2009
    Date of Patent: February 5, 2013
    Inventor: Walter Dea McDonald
  • Automated warning system for waterski boats
    Publication number: 20110140925
    Abstract: There is provided an automated warning system which includes a receiver/controller, an actuator, one or more relays electrically connected to both the receiver and the linear actuator, a flag holder and a mechanical linkage connecting the linear actuator to the flag holder such that movement of the linear actuator causes the flag holder to move between raised and lowered positions.
    Type: Application
    Filed: December 11, 2009
    Publication date: June 16, 2011
    Inventor: Walter Dea McDonald