| 摘要 |
Device providing pressurised spraying of a liquid or pasty product, by prior activation obtained by rotation, comprising two chambers (9) and (10) formed in tandem in a cylinder (2) and a piston (1) which can move axially by means of a hollow threaded rod (13) formed at the centre of the said piston (1) in the said cylinder (2), intended for changing, on one side, the volume of the chamber (9) and, on the other side with respect to its opposite face (5), for increasing the tension in the spring (3) placed in a partially compressed state between the said face (5) and the bottom which blocks off the cylinder (2); a threaded element acting as a nut (6) connected by screwing to the rod (13), the said nut (6) made at the base of the wall (41), terminated at the upper end by a cap (23) intended to be fixed to the said wall (41) inside a container filled with a liquid or pasty product, and to guide the cylinder (2) axially inside the said wall (41), the cylinder (2), closed at its upper end by a valve (24), having a part whose diameter is sufficient to permit the user easily to drive the threaded rod (13) in rotation by means of the cylinder (2) with which it is rotationally integral. <IMAGE>
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