| 摘要 |
Low height precompression pump. The pump comprises: a cylinder (1) comprising a pump chamber (3), and an inlet valve (5), a piston (7) with a lower outwardly flaring lip seal (9) and an inwardly flaring lip seal (19), which rims a central aperture (17) of the piston (7), a hollow pump plunger rod (21), which is in sliding engagement with the central aperture (17), and which has a passage for communication (23) between the pump chamber (3) and the exterior, a securement device (37), with an upper retention cover (39), which attaches the cylinder (1) to a container, a first elastic member (31) housed in the cylinder (1) and a second elastic member (47), which has an upper bearing point (49) applied directly on the plunger rod (21), and which is above the upper retention cover (39). <IMAGE> |
