Patent ID: 8074823

Claim:
A vacuum release device capable of constructing an air conduit on walls of a container, said device comprising: two longitudinal segments of an open channel; said open channel comprising an elongated base wall, said elongated base wall having a bendable portion between said two longitudinal segments; each of said two longitudinal segments comprising two elongated sidewalls connecting to respective longitudinal edges of said base wall and projecting upward, an open top defined by top edges of said sidewalls and substantially parallel to said base wall, and two elongated flanges longitudinally along respective said top edges of said two elongated sidewalls; said bendable portion devoid of said sidewalls; wherein said bendable portion is so bent that said two longitudinal segments are longitudinally angled to each other at a predetermined angle, said two longitudinal segments are installed inside said container, said open top of a first segment of said two longitudinal segments faces a container sidewall, said open top of a second segment of said two longitudinal segments faces a container bottom wall, said flanges of said first segment are attached on said container sidewall, said flanges of said second segment are attached on said container bottom wall, said bendable portion is situated at an inner corner between said container sidewall and said container bottom wall, such that said open channel forms said air conduit on both said container sidewall and said container bottom wall; wherein said bendable portion covers a void space at said inner corner and forms two openings of said air conduit at said inner corner, so as to provide air conduction at said inner corner; and wherein a first longitudinal open end of said air conduit is located inside said container and on said container bottom wall, and a second longitudinal open end of said air conduit is located inside said container and proximal to a container mouth.