LOW-CONTAMINATED DEVICE FOR DELIVERY OF FLUID MEDIUM AND METHOD OF APPLICATION Russian patent published in 2018 - IPC B01F13/00 B01F5/06 B01F15/00 

FIELD: container and packing.

SUBSTANCE: invention relates to nozzles and covers for dispensing flowable materials, including a plurality of flowable materials which are mixed to form the final product to be dispensed. Dispenser comprises a delivery tip that includes: a first fluid passage and a second fluid passageway, wherein each fluid passage has an open distal end; a vortex chamber containing a nozzle, the distal end of each fluid passage has a fluid communication with the vortex chamber; area for mixing inside the vortex chamber; expandable outer cover disposed around the vortex chamber, wherein, in the absence of the force applied to it, the expandable outer cover is configured to reduce the mixing region to zero volume; outlet opening in an expandable outer cover that is open when the force exerted on the expandable outer cover and which is configured to dispense through it one or more fluids from the mixing region; and optionally a rod, occupying the outlet opening in the absence of force acting on the expandable outer cover, with cleaning the outlet from any fluid or fluids contained therein.

EFFECT: invention provides for safe dosing of materials and subsequent sealing of one or more delivery openings upon completion of dosing.

10 cl, 15 dwg