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. 16, 1987
Filed:
Aug. 19, 1985
William G Urbani, Stockton, CA (US);
Industrial Innovations, Inc., Stockton, CA (US);
Abstract
A cleaning system includes a pressure vessel partially filled with a cleaning liquid which is pumped from the vessel, heated by a heat exchanger and sprayed onto a dirty surface to be cleaned. A vacuum pump creates a partial vacuum above the free surface of the cleaning liquid in the vessel. A vacuum line connects a low point at the dirty surface to the pressure vessel so that dislodged contaminants and cleaning liquid are sucked into the vessel. Liquid and solids are pumped from the pressure vessel into a solids separator to remove relatively large solids. Liquid passes from the solid separator into a centrifuge which removes very fine solid particles, which are combined with a bulk solidification medium in a blender/extruder to create disposal cake. Exhaust gases from the vacuum pump can be either recycled into a substantially sealed dirty tank or directed through a scrubber to remove condensate and other substances. The exhaust gas from the scrubber can be burned in the heat exchanger burner.