| 摘要 |
<p>In a spray pump with container connector, the actuation of a pump piston (5') displaceable in a case bore (17'), on the rod (51') of which there is provided a crown-shaped lip seal (53'), enables the release or closure of a venting to the atmosphere for the container connector (24'). Before actuating the piston (5'), said lip seal (53') is arranged tight against a flat segment (19') of the casing bore (17'). The displacement of the piston (5') in the pumping direction causes the opening of a slot between the lip seal (53') and the inner wall of the bore.</p> |
