Patents by Inventor Stuart A. Welsh

Stuart A. Welsh 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).

  • Patent number: 8651057
    Abstract: A movement monitoring device to monitor and record movement of animals through an aquatic animal passage system, regardless of water turbidity. A housing connected to the aquatic animal passage system has an entrance to receive an animal and an exit for the animal to leave the housing. A ramp within the housing has a lower end and an upper end, and the lower end is positioned at the entrance. A platform within the housing has one end connected to the upper end of the ramp and the other end positioned at the exit. The platform is elevated so that water from the aquatic animal passage system flows underneath the platform, and the animal climbs up the ramp, out of the water, and onto the platform. A photographic system focused on the platform records an image of the animal on the platform out the water.
    Type: Grant
    Filed: August 18, 2011
    Date of Patent: February 18, 2014
    Assignee: The United States of America, as represented by the Secretary of the Interior
    Inventor: Stuart A. Welsh
  • Patent number: 6823749
    Abstract: A sediment measuring device has a base that is fixed into the bottom of a body of water. A removable trap, having a retaining matrix, inserts into the fixed base to capture and retain moving sediment within the trap over a given period of time. The trap is removed from the base, and may be replaced with a second trap, after which the trapped sediment is measured.
    Type: Grant
    Filed: July 1, 2003
    Date of Patent: November 30, 2004
    Assignee: The United States of America as represented by the Secretary of the Department of the Interior
    Inventors: Stuart A. Welsh, Lara B. Hedrick, James D. Hedrick