ONE-WAY VALVE SYSTEM SEALED OVER ENTIRE SURFACE AND FLUID FEED SYSTEM Russian patent published in 2010 - IPC B65D5/72 

FIELD: transport, package.

SUBSTANCE: proposed valve system comprises fluid source with bore and valve system communicated with said bore. Note here that valve system consists of inner core, tubular flexible membrane and casing. Note also that said core has fluid substance inlet bore and at least one outlet bore. Tubular flexible membrane has first and second ends, the former being thicker than the latter. Besides, said tubular flexible membrane is arranged above the inner core outer surface. Pressure acts on fluid to force it out through outlet bore to expand membrane outward from inner core outer surface. Casing covers flexible membrane and has outlet bore to feed fluid from valve system when pressure acts to fluid. Note here that with pressure released, first end of tubular flexible membrane comes in close contact with inner core outer surface before tubular membrane remaining part returns to close contact with inner core outer surface.

EFFECT: preventing oxygen passage or other impurities from ambient air into container via valve.

42 cl, 11 dwg