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:
Sep. 13, 1988
Filed:
Feb. 21, 1986
Anthony J Prisco, Jr, Beverly, NJ (US);
Bruce R Sewter, Pernherton Township, Burlington County, NJ (US);
William E Briggs, Beverly, NJ (US);
Gary L Archer, Mount Holly, NJ (US);
Westinghouse Electric Corp., Pittsburgh, PA (US);
Abstract
A method for cleaning a solvent which may contain hazardous particulate material which comprises liquid and vapor portions which are being recirculated in a closed system. Suspended particulate material is filtered out of the liquid. Dissolved particulate material is removed by distilling the liquid. The vapor is condensed and combined with the clean liquid. A portion of the vapor is recirculated. The solvent may be cleaned and recirculated continuously. An apparatus for cleaning a solvent which comprises liquid and vapor portions which are being recirculated in a closed system. The apparatus comprises a cleaning chamber in which solvent may be used to remove hazardous particulate material from an article. Filters remove suspended particulate material from the liquid. A still removes dissolved particulate material. The clean liquid solvent is conveyed by a conduit to a holding chamber. Means are provided for removing the solvent vapor from the chamber and returning a portion of it to the holding chamber and recirculating a portion of it to the cleaning chamber. The apparatus operates continuously as the article is being cleaned.