Patents by Inventor Frederick M Riser

Frederick M Riser 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).

  • Orbital wastewater treatment system with combined surface aerator and submerged impeller
    Patent number: 7186332
    Abstract: An orbital wastewater treatment system includes a tank and a partition disposed in the tank to define a pair of channels in the tank. The tank has a turning wall bounding contiguous portions of the channels. The partition has an end spaced from the turning wall, whereby the channels communicate with one another. A driven shaft is disposed vertically in the tank between the end of the partition and the turning wall. The driven shaft is provided at an upper end with a surface aerator and at a lower end with a horizontal impeller. At least one baffle member is disposed in the tank partially about a lower end of the shaft including the impeller.
    Type: Grant
    Filed: April 30, 2004
    Date of Patent: March 6, 2007
    Assignee: GL&V Management, Hungary KFT
    Inventors: Betty Ann Curtis, Frederick M Riser, John Vorwaller