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:
May. 19, 1992
Filed:
Feb. 04, 1991
Applicant:
Inventor:
Eric L Mainz, Colwich, KS (US);
Assignee:
Vulcan Materials Company, Wichita, KS (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B08B / ; B08B / ;
U.S. Cl.
CPC ...
134 11 ; 134 31 ; 134 40 ; 252D / ;
Abstract
A vapor cleaning process for cleaning soil from solid articles comprising the use of an azeotropic vapor mixture of perchloroethylene and water as the cleaning agent which condenses on the articles and thus cleans them. Liquid perchloroethylene and water are placed in a lower portion of a degreasing chamber, the articles to be cleaned are introduced into an upper portion of the chamber, the perchloroethylene and water are heated and evaporated to form a minimum-boiling azeotropic vapor mixture, the vapor mixture is condensed on the articles whereby soil is removed from them, and the cleaned articles are then removed from the chamber.