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:
Dec. 07, 1993
Filed:
Dec. 23, 1991
Wilhelm Neubauer, Vienna, AT;
Werner Comanns, Korntal-Munchingen, DE;
Aichelin GmbH, , DE;
Abstract
A method and an apparatus for treating workpieces with a fluid, in particular for cleaning metallic workpieces prior to a subsequent heat treatment are disclosed. According to claimed method the workpieces are positioned in a washing vessel and are entirely overflowed with a pressureless swell of a treating fluid. After a certain period of time, a discharge opening in the vessel is closed so that an immersion bath is filled in. When the workpieces are entirely immersed in the treating fluid, the fluid is agitated by means of air bubbles. During subsequent bath discharge the workpieces are continuously overflowed by the treating fluid in order to avoid chemical reactions with the ambient atmosphere. Finally, the workpieces are dried by means of a vacuum dryer.