Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
209 words
A container comprising a flexible sheet material capable of being sealed for closing off the interior of the container from the outer atmosphere, and a one-way valve means carried by said flexible sheet material for preventIng outside air from flowing into the container, said one-way valve means including a base member carried by said sheet material, having a surface directed away from the interior of said container, and formed with a valve opening, yieldable means engaging said surface of said base member, extending across said valve opening, and normally assuming a position engaging the latter surface for maintaining said one-way valve means closed, said valve means further including a hollow member fixed to said surface of said base member and defining therewith an inner chamber in which said yieldable means is located, said hollow member being formed with a discharge opening through which said chamber communicates with the outer atmosphere, and said yieldable means responding to an excess of pressure in the interior of said container over the outer atmospheric pressure by yielding to place said valve opening in communication with said chamber until said excess pressure in the interior of said container diminishes to a value where said yieldable means again assumes said position closing said valve opening.
Claim 2
Dependent Claim
209 words
A container comprising a flexible sheet material capable of being sealed for closing off the interior of the container from the outer atmosphere, and a one-way valve means carried by said flexible sheet material for preventIng outside air from flowing into the container, said one-way valve means including a base member carried by said sheet material, having a surface directed away from the interior of said container, and formed with a valve opening, yieldable means engaging said surface of said base member, extending across said valve opening, and normally assuming a position engaging the latter surface for maintaining said one-way valve means closed, said valve means further including a hollow member fixed to said surface of said base member and defining therewith an inner chamber in which said yieldable means is located, said hollow member being formed with a discharge opening through which said chamber communicates with the outer atmosphere, and said yieldable means responding to an excess of pressure in the interior of said container over the outer atmospheric pressure by yielding to place said valve opening in communication with said chamber until said excess pressure in the interior of said container diminishes to a value where said yieldable means again assumes said position closing said valve opening.
Claim 3
Dependent Claim
29 words
The combination of claim 1 and wherein said hollow member of said valve means has an inner projection holding said yieldable means against said surface of said base member.
Claim 4
Dependent Claim
21 words
The combination of claim 1 and wherein said sheet material is formed with an opening with which said valve opening registers.
Claim 5
Dependent Claim
35 words
The combination of claim 3 and wherein said sheet material includes a thermoplastic sheet portion and said base member being made of a plastic and being welded to said sheet portion in a fluidtight manner.
Claim 6
Dependent Claim
51 words
The combination of claim 4 and wherein said thermoplastic sheet portion defines part of the interior of said container, and has an inner surface directed toward the interior of said container, said base member being welded to said thermoplastic sheet portion at said surface thereof in the interior of said container.
Claim 7
Dependent Claim
75 words
The combination of claim 1 and wherein said yieldable means is in the form of a flexible disc, said hollow member having an inner projection holding said disc against said inner surface of said base member, and said disc having a peripheral portion extending beyond said projection to be deflected by the excess pressure in the interior of said container when said yieldable means responds to place said valve opening in communication with said chamber.
Claim 8
Dependent Claim
27 words
The combination of claim 6 and wherein said chamber surrounds said projection and said disc has a periphery extending beyond said valve opening and beyond said projection.
Claim 9
Dependent Claim
16 words
The combination of claim 7 and wherein said disc is made of rubber and is elastic.
Claim 10
Dependent Claim
30 words
The combination of claim 7 and wherein said valve opening is situated centrally of said base member and said projection and disc are both coaxially aligned with said valve opening.