Patents by Inventor Edwin K. Ball

Edwin K. Ball 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).

  • Fresh air swimming snorkel
    Patent number: 7047965
    Abstract: A front-mounted swimming snorkel with separate air intake and exhaust tubes controlled by one-way valves to prevent re-breathing exhaled air, wherein the exhaust tube cross-sectional area is selected to regulate the amount of force needed to open the water purge valve so that a swimmer can open the purge valve by exhaling with more force than normal.
    Type: Grant
    Filed: February 24, 2005
    Date of Patent: May 23, 2006
    Inventor: Edwin K. Ball