Cavity-forming shaped part for an article, especially a hollow-charge mine

A cavity-forming shaped device for a hollow-charge mine or like article, that forms, in an operative position, a cavity tightly sealed all around, said shaped device comprising a flexible body portion for forming said cavity at least in part, at least one ventilating means, and means for effecting deployment of the body portion from a collapsed inoperative starting position to an extended operative position, said deployment means comprising at least one draw element located on the outside exposed part of the body portion to provide the deployment force required to extend the body portion into the operative position, said body portion being folded up, compressed, inverted or the like in the starting position, and being deployed and ventilated to provide the closed and sealed cavity, in order to place said device into the operative position.

A cavity-forming shaped device for a hollow-charge mine or like article, that forms, in an operative position, a cavity tightly sealed all around, said shaped device comprising a flexible body portion for forming said cavity at least in part, at least one ventilating means, and means for effecting deployment of the body portion from a collapsed inoperative starting position to an extended operative position, the ventilating means being associated with a drawing means for effecting the opening of the ventilating means during the deployment of the device into the operative position, said body portion folded up, compressed, inverted, or the like in the starting position and being deployed and ventilated to provide the closed and sealed cavity, in order to place said device in the operative position.

A cavity-forming shaped device for a hollow-charge mine or like article, that forms, in an operative position, a cavity tightly sealed all around, said shaped device comprising a flexible body portion for forming said cavity at least in part, at least one ventilating means and means for effecting deployment of the body portion from a collapsed inoperative starting position to an extended operative position, the ventilating means comprising an element forming at least one opening in the shaped device, which is provided with a sealing element, wherein the sealing element is in close contact with and/or within the opening by elastic doformation of the sealing element and/or of the shaped device in the opening and this close contact being temporarily eliminated by exertion of tensile stress on the sealing element or on the shaped device.