BOTTLE CAP Russian patent published in 2009 - IPC B65D41/04 A63H27/26 

FIELD: mechanics; packaging.

SUBSTANCE: invention considers caps for closing plastic bottles. The bottle's neck is threaded to give it properties of flying toy-like rocket with reactive thrust preventing water or air leaking. The bottle cap contains cylindrical threaded part, bottom with sealing element for leak-tight coupling with bottle, nozzle and aerodynamic stabiliser. The nozzle is expanding to the its exit at an area of critical cross section being no more than 80 mm² at bottle capacity from 0.25 to 0.6 l. Stabiliser is in the shape of skirt surrounding nozzle coaxially. The bottom and nozzle are implemented as a one-piece element.

EFFECT: simple design, safe and slow start and entertaining high flight of toy-like rocket avoiding injury of players and spectators.

8 cl, 2 dwg