Patents by Inventor William W. McWha

William W. McWha 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).

  • Inflatable weir fish passage systems and methods
    Patent number: 7670083
    Abstract: A fish passage system is provided that includes a first weir and a second weir upstream of the first weir. The first and second weirs are each moveable between a deflated condition and an inflated condition. The fish passage system further includes a controller to move the first and second weirs between the inflated and deflated conditions to create at least one pool between the first and second weirs so that fish can migrate upstream and/or downstream of the system without having to jump the first and second weirs.
    Type: Grant
    Filed: September 6, 2006
    Date of Patent: March 2, 2010
    Inventor: William W. McWha