Coating apparatus – Immersion or work-confined pool type – Running length work – longitudinally traveling
Patent
1989-05-26
1990-10-23
Nozick, Bernard
Coating apparatus
Immersion or work-confined pool type
Running length work, longitudinally traveling
118423, 118426, 118427, 118429, 118602, B05C 312
Patent
active
049643657
ABSTRACT:
An apparatus for immersing circuit boards in a liquid. The apparatus of the invention generally comprises (a) a conveyor for moving circuit boards along a predetermined path and (b) an immersion pan positionable about at least a portion of said conveyor and operative to hold a quantity of liquid therein such that circuit boards passing along the conveyor will become immersed in said liquid. The conveyor portion of the apparatus may comprise a "roller conveyor" having a series of vertically opposed roller pairs. The immersion pan portion of the apparatus will preferably fit beneath the conveyor and will be provided with an infusion of liquid such that liquid will rise within the pan, thereby submerging at least a portion of the conveyor. Circuit boards moving along the conveyor path will thus become immersed in and pass through the liquid. The liquid may be allowed to cascade over one or more edges of the immersion pan. Cascading or over-running liquid will be collected in an underlying sump and recirculated into the immersion pan. Such recirculation is effected in a manner that provides for complete turnover of solution within the pan, avoiding dead zones or stagnant areas of solution therewithin.
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File Wrapper for U.S. Patent Application Ser. No. 433,482 to D. L. Goffredo and Conrad D. Shakley filed 1/15/74.
General Processing Guide for TINBOND.TM. 600, E. I. Du Pont de Nemours Corps. Wilmington, Del.
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D.E.M. Controls of Canada
Nozick Bernard
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