Rigid container with a piston movable by a threaded rod allowing the expulsion of liquid or pasty products under pressure created before or during the expulsion

摘要

Device making it possible to expel a liquid or pasty substance under high pressure, this device comprising a rigid tubular container 1 open at one of its two ends and closed at the other by an obturating base 2 and a piston 3 which can be moved inside the container 1 by the rotational motion of a threaded rod 4 operated by an element 6 placed at one of the two ends of the container 1, the threaded rod 4 having at its upper end a shoulder 10 bearing directly or through a spring 12 on the upper face of the obturating base 2 provided with an outlet orifice 7. <IMAGE>