Device for regulation of a concentration for a product in a...

Details Device for regulation of a concentration for a product in a... Device for regulation of a concentration for a product in a...

2011-08-16

2011-08-16

Rivell, John (Department: 3753)

Fluid handling

Liquid level responsive or maintaining systems

Barometric

C137S563000, C222S588000

Reexamination Certificate

active

07997298

ABSTRACT:
Device for the regulation of the concentration of a product in a liquid and, most specifically, of an alcohol used in the composition of a varnish contained in a varnishing vat for optical glasses or other substrates. The vat comprises an overflow tray and a sealed alcohol reservoir. The reservoir is installed higher than the overflow tray so that when level of the varnish in the overflow tray drops sufficiently low, an air bubble is created that rises to the alcohol reservoir, thus creating additional pressure in the alcohol reservoir and forcing a drop of alcohol into the overflow tray until the level of the varnish in the overflow tray recovers its normal level above the junction point between the second pipe and the overflow tray.

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