Back to results
US 8,986,777 B2Granted
Vapor sheath for liquid dispensing nozzle
AssigneeGlaxoSmithKline LLC
InventorsAllan J. Clarke, Frederick H. Fiesser, James A. McHugh
Life of this patent
Estimating the term…
Abstract
The present disclosure provides a device for preventing the fouling of a liquid dispensing nozzle. The end of the dispensing nozzle is placed in a hollow interior of a band carrying the same solvents that are dispensed by the nozzle. The solvent on the band evaporates into a gap between the ring and dispensing nozzle, thus providing a vapor sheath or environment that helps to prevent the fouling of the dispensing nozzle.
Claims11
A method of dispensing liquid onto a target, the liquid comprising a solvent, and the method comprising:
- supplying the liquid in a dispensing nozzle, the dispensing nozzle having an end through with the liquid is dispensed onto the target;
- placing the end of the dispensing nozzle into a hollow interior of a porous band having an inner surface and an outer surface to form a gap between the end of the dispensing nozzle and the inner surface of the porous band, wherein the porous band has solvent on at least a portion of the inner surface;
- allowing solvent on the inner surface of the porous band to evaporate into the gap;
- and
- supplying an additional amount of the solvent to the outer surface of the porous band so that the fluid migrates to said inner surface of said porous band, wherein the allowing and supplying are performed while the liquid is dispensed on to the target.
2 more elements
Dependencies are inferred from the claim text.