Chemistry: electrical and wave energy – Processes and products
Patent
1981-11-06
1983-02-08
Tufariello, T.
Chemistry: electrical and wave energy
Processes and products
204273, 204275, C25D 508, C25D 2110
Patent
active
043728251
ABSTRACT:
Disclosed is a sparger in which there are a plurality of nozzles extending from a vertical sparger pipe, and alternating the vertical sparger pipes or sparger tubes have the nozzles at mid-stations between the adjacent sparger nozzles; with the entire sparger being directed to discharge the fluid to impinge upon the workpiece such as a printed circuit board at an acute angle preferably less than 90.degree.. The resulting pattern on the workpiece is a plurality of footprints, all overlapping a minimum amount on the target area. A further aspect of the invention is directed to having the spargers on one side of the workpiece direct fluid in a downstream direction, whereas the spargers on the opposite side of the workpiece direct the fluid in an upstream direction or contra to the movement of the workpiece such as a printed circuit board. With those spargers directed upstream, a deflector is desirably provided so that any workpieces such as printed circuit boards which cock along the path of motion will be deflected and not cause jamming. The method of the invention is directed to positioning a plurality of spargers in staggered relationship on opposite sides of workpieces, and further orienting the spargers on the opposite sides of the workpiece to discharge their fluids in the opposite direction.
REFERENCES:
patent: 1431022 (1922-10-01), Mumford
patent: 3503856 (1970-03-01), Blackmore
patent: 3933615 (1976-01-01), Levenson
patent: 4029564 (1977-06-01), Higuchi
patent: 4174261 (1979-11-01), Pellegrino
Dominik Jack E.
Micro-Plate Inc.
Tufariello T.
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