Patents by Inventor Henry Peter Spradbury, deceased

Henry Peter Spradbury, deceased 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).

  • Liquid surface skimmer
    Patent number: 6027641
    Abstract: A liquid surface skimmer consisting of an open topped cylindrical housing securable in a body of liquid and having a first inlet by way of a buoyant open ended sleeve movable in the housing, a transverse second inlet into the housing adjacent the bottom of the housing and an outlet opposite to and in line with the second inlet such that flow forced through the second inlet and into the outlet will draw liquid through the sleeve and thence through the outlet. The outlet has attached to it a debris trap extending to the housing preferably in the form of a net bag.
    Type: Grant
    Filed: June 12, 1997
    Date of Patent: February 22, 2000
    Assignees: Cornelia Johanna Spradbury, Anne Sutton
    Inventors: Henry Peter Spradbury, deceased, George Danks