ONE-STROKE VALVE BLOCK Russian patent published in 2011 - IPC B65D5/72 

FIELD: machine building.

SUBSTANCE: one-stroke valve block of continuous packing with system of supply for distribution of fluid substance consists of reservoir for storage of fluid substance with port and of valve block with cover. Also, the valve block connected to the port of the reservoir includes an internal core with an inlet orifice for reception of fluid substance into a pass channel and at least one outlet orifice from the pass channel, and a hollow elastic membrane with two ends, the first of which has thickness bigger, than the second end. Additionally, the hollow elastic membrane is located over external surface of the internal core; after supply of pressure fluid substance passes through at least one orifice and expands the above said membrane outward from external surface above the internal core. Notably, the cover consists of the flexible membrane and has the outlet orifice for distribution of fluid substance from the valve block at fluid substance pressure build-up. Upon termination of pressure build-up in fluid substance, the first end of the hollow elastic membrane comes back firmly adjoining external surface of the internal core, before the rest of the hollow elastic membrane returns onto external surface above the internal core. The reservoir is filled with medicine for eye or nasal cavity cure containing hyaluronic acid or its derivatives, but not containing preservatives.

EFFECT: valve block with inlet orifice preventing back flow of fluid substance into source upon ejection of separate doses.

54 cl, 11 dwg