Patents by Inventor Ken Gehring

Ken Gehring 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: 4456536
    Abstract: Bitumen, floating on tailings pond water in the form of a cohesive blanket, is recovered from the surface by an apparatus that takes advantage of the cohesiveness of the bitumen. A drum with radially attached prongs is partly submerged in the water and is rotated around its longitudinal axis so that the prongs penetrate into the bitumen blanket and grip and pull it towards the drum. Upon being drawn by the prongs beneath the surface of the water, hydrostatic pressure causes the bitumen to adhere to the curved surface of the drum. During the upswing of the drum, the prongs and the adhesiveness of the metal surface of the drum hold the bitumen on the drum. A comb scraper then removes the greater portion of the bitumen, which falls into a receptacle.
    Type: Grant
    Filed: July 10, 1981
    Date of Patent: June 26, 1984
    Assignees: Petro-Canada Exploration Inc., Her Majesty the Queen in right of the Province of Alberta, Government of the Province of Alberta, Department of Energy and Natural Resources, PanCanadian Petroleum Limited, Esso Resources Canada Ltd., Canada-Cities Service, Ltd., Gulf Canada Resources Inc., Alberta Energy Company Ltd., Hudson's Bay Oil and Gas Company Limited, Petrofina Canada Inc.
    Inventors: Gordon Lorenz, Ken Gehring