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:
Jul. 18, 2006
Filed:
Nov. 28, 2003
Adelbert Gorham, Burnsville, MN (US);
Denis J. Dudrey, Bloomington, MN (US);
James N. Gehrking, Burnsville, MN (US);
Ronald L. Jorgenson, Apple Valley, MN (US);
David S. Paulson, Elko, MN (US);
Rodger I. Spears, Bloomington, MN (US);
Lloyd E. Weisert, Bloomington, MN (US);
Adelbert Gorham, Burnsville, MN (US);
Denis J. Dudrey, Bloomington, MN (US);
James N. Gehrking, Burnsville, MN (US);
Ronald L. Jorgenson, Apple Valley, MN (US);
David S. Paulson, Elko, MN (US);
Rodger I. Spears, Bloomington, MN (US);
Lloyd E. Weisert, Bloomington, MN (US);
Advanced Products Laboratories, Inc., Burnsville, MN (US);
Abstract
A self-cleaning centrifuge for clarifying contaminated liquids has a rotor assembly comprising nested first and second sets of concentric cylinders supported for rotation about an axis. The sets of concentric cylinders are rotatably connected. A motor is connected to rotate one of the sets. Contaminated liquid is supplied to the nested cylinders, and the liquid provides coupling between both of the sets so that both sets rotate about the axis. Centrifugal force causes foreign matter to collect on the circumferential surfaces of the cylinders. The resultant clarified liquid is collected for reuse. A selectively utilized brake provides sudden braking of one of the rotating sets to purge collected foreign matter from the cylinders. The purged foreign matter is collected for disposal.