PYROTECHNICAL FIRECRACKER Russian patent published in 1998 - IPC

FIELD: pyrotechnical devices intended for entertainment, amusing, advertising and similar purposes. SUBSTANCE: firecracker has a casing accommodating an ejection charge with an initiating system, wad-diaphragm, flat ejected members, for instance, confetti, and a membrane-diaphragm. Flat ejected members have a diameter equal to the casing inside diameter and are placed close to one another forming a stack of a cylindrical shape. At actuation of the ejection charge the developed pressure pushes out the stack of ejected members from the casing. In the ascending branch of trajectory the ejected members move jointly with the cylindrical stack. The stack flies up to the moment until the linear velocity approaches zero. Then, under the action of wind, mass and aerodynamic forces the stack decomposes into separate members, which then, irrespective of one another, fall onto the ground. EFFECT: enhanced entertainment. 1 dwg