Patents by Inventor Duncan P. Winzar

Duncan P. Winzar 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).

  • Water trap
    Patent number: 6662387
    Abstract: A water trap comprising a cylindrical outer casing having a flat top wall and a frustoconical bottom wall, an internal substantially semi-circular open topped water seal container within the outer casing, an inlet into the water seal container which passes through the top wall and abuts one side wall of the water seal container and extends thereinto, and an outlet from the bottom wall of the trap that is offset from, and co-linear with, the inlet. The cross-sectional areas within the trap progressively increase to promote water flow through the trap.
    Type: Grant
    Filed: June 26, 2002
    Date of Patent: December 16, 2003
    Inventor: Duncan P. Winzar
  • Water trap
    Publication number: 20030005516
    Abstract: A water trap comprising a cylindrical outer casing having a flat top wall and a frustoconical bottom wall, an internal substantially semi-circular open topped water seal container within the outer casing, an inlet into the water seal container which passes through the top wall and abuts one side wall of the water seal container and extends thereinto, and an outlet from the bottom wall of the trap that is offset from, and co-linear with, the inlet. The cross-sectional areas within the trap progressively increase to promote water flow through the trap.
    Type: Application
    Filed: June 26, 2002
    Publication date: January 9, 2003
    Inventor: Duncan P. Winzar