Foam dispensing nozzles and dispensers employing said nozzles
AssigneeThe Procter & Gamble Company
InventorsTatsuya Taniguchi, Dimitris I. Collias
Life of this patent
Estimating the term…
Abstract
Foam dispensing nozzles and manually actuable foam dispensers for producing and dispensing improved foams made from a foamable liquid and gas. The foam dispensing nozzles include a velocity decreasing structure so that the average foam velocity through the foam refining apparatus does not exceed a certain value.
Claims10
A foam dispensing nozzle for dispensing a final foam from an incoming intermediate foam, said nozzle comprising:
- (a) an inlet conduit for receiving the incoming intermediate foam from an initial foam refining means, the incoming intermediate foam consisting of a foamed mixture of a foamable liquid and a gas at an intermediate foam velocity;
- (b) a final foam refining means for converting the intermediate foam into a final foam located in fluid communication with the inlet conduit and having a plurality of substantially uniformly-sized and evenly distributed passageways therethrough, the passageways having a dimension from about 0.020 mm to about 0.120 mm;
- and
- (c) a velocity decreasing means for reducing the intermediate foam velocity to a velocity no greater than 300 cm/sec through the foam refining means, the velocity decreasing means being located between and in fluid communication with the inlet conduit and the foam refining means.
A pump foam dispenser for dispensing a final foam from an incoming intermediate foam, said dispenser comprising a reservoir to contain said foamable liquid, a manually-actuable means for generating a volume of a mixture of said foamable liquid and a gas, and a foam dispensing nozzle sealably attached in fluid communication with said manually-actuable means wherein the improvement comprises a nozzle comprising:
- (a) an inlet conduit for receiving the incoming intermediate foam from an initial foam refining means, the incoming intermediate foam consisting of a foamed mixture of a foamable liquid and a gas at an intermediate foam velocity;
- (b) a final foam refining means for converting the incoming intermediate foam into a final foam located in fluid communication with the inlet conduit and having a plurality of passageways therethrough, the passageways having a dimension from about 0.020 mm to about 0.120 mm;
- and
- (c) a velocity decreasing means for reducing the intermediate foam velocity to a velocity no greater than 300 cm/sec through the passageways of the foam refining means, the velocity decreasing means being located between and in fluid communication with the inlet conduit and the foam refining means.
Dependencies are inferred from the claim text.