초록 ▼

The present invention concerns a unitary flexible barrier for use in a plural-zoned, valved pressure container wherein the barrier has a shaped spatial form having sufficient rigidity to maintain its shape prior to insertion into and use in a plural-zoned, valved pressure container. The barrier comp

The present invention concerns a unitary flexible barrier for use in a plural-zoned, valved pressure container wherein the barrier has a shaped spatial form having sufficient rigidity to maintain its shape prior to insertion into and use in a plural-zoned, valved pressure container. The barrier comprises a flexible wall portion having an outer wall segment and an inner wall segment connected by an angled fold, the free terminal end of the outer wall segment forming a seal and the terminus of the inner wall segment distal to the fold extending into a central piston region that closes the barrier, and further wherein the outer wall segment is steeply frusto-conical in shape and terminates at its free end in a seal, and the inner wall segment is disposed in juxtaposed relation to the inner surface of the outer wall and in steeply frustoconical shape opposite to the frusto-conical shape of the outer wall segment so as to form a small acute angle between the outer wall segment and the inner wall segment; the terminus of the inner wall segment distal to the fold being closed by a central piston region to thereby complete the unitary barrier member.

대표청구항 ▼

1. A unitary flexible barrier for use in a plural-zoned, valved pressure container comprising:a shaped spatial form having a terminal sealing means, a flexible wall portion, and a central piston region, said sealing means, wall portion and piston region being formed as a unitary spatial form with su

1. A unitary flexible barrier for use in a plural-zoned, valved pressure container comprising:a shaped spatial form having a terminal sealing means, a flexible wall portion, and a central piston region, said sealing means, wall portion and piston region being formed as a unitary spatial form with sufficient rigidity to maintain its shape prior to insertion into and use in a plural-zoned pressure container; said terminal sealing means being adapted for sealing in a container to form a propellant zone and a product zone; said flexible wall portion having an inner wall segment and an outer wall segment connected by a fold; said outer wall segment being a steeply frusto-conical shape and extending upwardly from the terminal sealing means to the fold, said outer wall segment and fold being dimensioned for insertion into the bottom of a container to form an initial spaced relationship with the inner side container surface; said inner wall segment being an oppositelydirected, steeply frusto-conical, shape contained within the outer wall segment and extending downwardly from the fold; said central piston region being connected to and extending generally inwardly from the bottom of the inner wall segment to close and complete the unitary barrier member; said inner wall segment having sufficient flexibility to permit said inner wall segment and said central piston region to move in an axially upward direction under the influence of propellant pressure.