Patents by Inventor Frederick D. Lind

Frederick D. Lind 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: 4268398
    Abstract: A sludge agitating method includes a support platform attached to pontoons for floating on a body of water, such as a waste water treatment facility lagoon, a paddle wheel, and a paddle wheel drive train for moving the platform across the surface of the water, an air distribution pipe, including a plurality of air outlets, movable in a vertical direction into and out of the lagoon, and an air compressor positioned atop the support platform and having an air outlet hose coupled to the air distribution pipe. The air distribution pipe is attached to the ends of two slide members which are attached to one end of the support platform. Initially, with the air distribution pipe positioned slightly below the top layer of sludge, as pressurized air is delivered to the air distribution pipe, the surrounding sludge is agitated and mixed with the surface water.
    Type: Grant
    Filed: February 21, 1979
    Date of Patent: May 19, 1981
    Inventors: William D. Shuck, Frederick D. Lind, John W. Cole
  • Patent number: 4191479
    Abstract: A sludge agitating apparatus includes a support platform attached to pontoons for floating on a body of water, such as a waste water treatment facility lagoon, a paddle wheel, and a paddle wheel drive train for moving the platform across the surface of the water, an air distribution pipe, including a plurality of air outlets, movable in a vertical direction into and out of the lagoon, and an air compressor positioned atop the support platform and having an air outlet hose coupled to the air distribution pipe. The air distribution pipe is attached to the ends of two slide members which are attached to one end of the support platform. Initially, with the air distribution pipe positioned slightly below the top layer of sludge, as pressurized air is delivered to the air distribution pipe, the surrounding sludge is agitated and mixed with the surface water.
    Type: Grant
    Filed: July 3, 1978
    Date of Patent: March 4, 1980
    Assignee: Tousley-Bixler Construction Co. Inc.
    Inventors: William D. Shuck, Frederick D. Lind, John W. Cole