Patents by Inventor Katherine R. MACMANNIS

Katherine R. MACMANNIS 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).

  • Detain H2O—detention pond retrofit device
    Patent number: 10316506
    Abstract: Aspects of a detention pond retrofit device for detention basin outlet control provide structures designed to throttle stormwater flow and maintain the rate at which water is discharged from the system below Qcritical, the flow rate at which erosion and down cutting of the receiving stream would begin, based on channel morphology and bed material resistance. The primary goal of the device is to induce increased flow detention during low to moderate rain events, while providing similar hydraulic performance during large events to that of the detention basin performance prior to the installation of the retrofit unit. This is achieved through a “T” or “Y” design with split flow paths, in which the lower path is hydraulically restricted through the installation of structures while the upper path is unrestricted.
    Type: Grant
    Filed: July 18, 2014
    Date of Patent: June 11, 2019
    Assignees: THE UNITED STATES OF AMERICA AS REPRESENTED BY THE ADMINISTRATOR OF U.S. ENVIRONMENTAL PROTECTION AGENCY, SUSTAINABLE STREAMS, LLC
    Inventors: Robert J. Hawley, James A. Goodrich, Katherine R. MacMannis
  • DETAIN H2O - DETENTION POND RETROFIT DEVICE
    Publication number: 20150020886
    Abstract: Aspects of a detention pond retrofit device for detention basin outlet control provide structures designed to throttle stormwater flow and maintain the rate at which water is discharged from the system below Qcritical, the flow rate at which erosion and down cutting of the receiving stream would begin, based on channel morphology and bed material resistance. The primary goal of the device is to induce increased flow detention during low to moderate rain events, while providing similar hydraulic performance during large events to that of the detention basin performance prior to the installation of the retrofit unit. This is achieved through a “T” or “Y” design with split flow paths, in which the lower path is hydraulically restricted through the installation of structures while the upper path is unrestricted.
    Type: Application
    Filed: July 18, 2014
    Publication date: January 22, 2015
    Applicants: SUSTAINABLE STREAMS, LLC, U.S. ENVIRONMENTAL PROTECTION AGENCY
    Inventors: Robert J. HAWLEY, James A. GOODRICH, Jake BEAULIEU, Katherine R. MACMANNIS