| 摘要 |
<p>The device for administering controlled doses is comprised of an elongate hollow body (2) appropriate to be housed inside a refill of fluid product, actuated by pushing a pusher slidingly mounted within the body (2) on the upstream side of the refill, by means of a pushrod (40), limiter means (23, 29) to limit the authorized excursion of the pusher (4) towards the refill, and anti-return means (55) for the pusher. The push-rod (40) has a cylindrical or prismatic shape, and the anti-return means is comprised at least of a semi-rigid wing inclined to the axis (55) cooperating in a buttressing way with the side surface of said pushrod (40).</p> |
