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:
Mar. 09, 1993
Filed:
Dec. 16, 1991
Steven L Bard, Endwell, NY (US);
Jeffrey D Jones, Newark Valley, NY (US);
International Business Machines Corporation, Armonk, NY (US);
Abstract
A fluid treatment apparatus and method wherein uniform treatment of a substrate (e.g., a thin, metallic sheet) is treated (e.g., etched) during movement thereof. This treatment involves directing a plurality of fluid jets through a collected first fluid onto one of the substrate's surfaces in such a manner that the fluid of each fluid jet will engage (collide with) the fluid from the nearest fluid jet as a result of being maintained across the substrate's surface at a predetermined velocity prior to mixing of the jets with surrounding fluid. Prevention of such mixing prior to such engagement has proven to assure uniform treatment of the substrate. In one aspect of the invention, fluid is directed onto opposite surfaces of the substrate in this fashion, the fluid from the lower surface, however, being passed through air or similar ambient and thus prevented from mixing therewith prior to such engagement.