The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jun. 26, 1984
Filed:
Jul. 10, 1981
Gordon Lorenz, Edmonton, CA;
Ken Gehring, Sherwood Park, CA;
Petro-Canada Exploration Inc., Calgary, CA;
Her Majesty the Queen in right of the Province of Alberta, Government of, , US;
PanCanadian Petroleum Limited, Calgary, CA;
Esso Resources Canada Ltd., Calgary, CA;
Canada-Cities Service, Ltd., Calgary, CA;
Gulf Canada Resources Inc., Calgary, CA;
Alberta Energy Company Ltd., Calgary, CA;
Hudson's Bay Oil and Gas Company Limited, Calgary, CA;
Petrofina Canada Inc., Calgary, CA;
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.