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US 4,049,156 AGranted
Thermally-responsive liquid dispenser
AssigneeChardon Laboratories, Inc.
InventorCharles B. Hood
Life of this patent
Estimating the term…
Abstract
A structurally simple device in the form of a closed container and vented outlet conduit operates in accordance with Charles' law to intermittently dispense quantities of a liquid reagent in response to an increase in ambient atmospheric temperatures. The present liquid dispensing device finds particular utility in supplying liquid reagents, such as scale inhibitors, biocides and the like to the water circulating systems of air conditioners.
Claims4
A liquid dispenser comprising:
- a. a fluid-tight container partially filed with a liquid and having an air space above the liquid;
- b. an open-ended conduit sealed to and extending outwardly through a side of said container a distance above the liquid in said container, said conduit having an inlet end submerged in the liquid in said container and a discharge outlet disposed exteriorly of said container and below the level of liquid therein;
- and
- c. a vent connected with said conduit exteriorly of said container and at a level above the liquid in said container for venting said conduit to the atmosphere surrounding said container.
1 more element
Dependencies are inferred from the claim text.