Self-adjusting return line and dip coating solution...

Details Self-adjusting return line and dip coating solution... Self-adjusting return line and dip coating solution...

2005-04-26

2005-04-26

Lamb, Brenda A. (Department: 1734)

Coating apparatus

With treatment of coating material

By agitation

C118S429000

Reexamination Certificate

active

06884293

ABSTRACT:
A diptank applies coating solution to devices that are dipped therein. A reservoir tank contains a reservoir of coating solution. The diptank forms a coating solution overflow return that flows to the reservoir by means of a conduit and a self-adjusting return line. The self-adjusting return line comprises a plastic tubing with an upper portion, a central portion and a lower portion. The upper portion is coupled to the conduit. The tubing central portion is flexible and corrugated and arranged to extend and compress in its length. The lower portion is supported by an attached buoy that floats on the surface of the reservoir. The lower portion defines an outlet that discharges the coating solution overflow return to the reservoir. As a result, the coating solution overflow return is discharged to the reservoir at a fixed vertical distance or level with respect to the surface of the reservoir.

REFERENCES:
patent: 1010562 (1911-12-01), Woodward
patent: 3351083 (1967-11-01), Sait
patent: 3421477 (1969-01-01), Gilbert et al.
patent: 4342328 (1982-08-01), Matta
patent: 57104041 (1982-06-01), None
2 pages of hard-copy print-out of NewAge Industries “home page”, whose web address is http://plastics.newageindustries.com, dated Sep. 18, 2002.
3 pages of hard-copy print-out of NewAge Industries “products”, “Corrugated FEP Tubing” section, whose web address is http://plastics.newageindustries.com/corrtef.asp, dated Sep. 18, 2002.

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