| 摘要 |
<p>The dosing pump assembly for pharmaceutical or cosmetic substances has the manually-operated pump installed in a variable volume container (2). The pump cylinder (4) has a non-return inlet valve (6) with a spring-loaded ball (6a). A spring (8) forcing a piston (5) with a central passage (9) upward toward a non-return outlet valve (7) with a spring-loaded (7b) ball (7a). There is a release channel (11) with a valve (12) for removal of air from the container. A suction cap (13), with a spring-loaded (14) stamp (16) inside it, is fitted over the valve.</p> |
