| 摘要 |
Accessories are provided for preventing the ingress of air into a dispensing pump (P) and to align a discharge aperture of the dispensing pump with a target, such as an eye (E). A dip tube ( 10 ) is disclosed that is sealed with a sealing plug ( 22 ) to serve as a liquid, reservoir for the dispensing pump. A pliant dip tube ( 100 ) is also disclosed to which is mounted an anchor ( 108 ) that causes the dip tube ( 100 ) to be responsive to gravitational orientation of a dispensing pump (P). In a third embodiment of the invention, a liquid reservoir ( 200 ) is formed with a recess ( 208 ) that is covered by a semi-permeable membrane ( 212 ). The semi-permeable membrane restricts flow in and out of the recess ( 208 ) to maintain a supply of liquid (L) about an end ( 210 ) of a dip tube ( 206 ). In a fourth embodiment, a safety is provided that comprises a safety ball ( 304 ), a blind aperture ( 306 ) defined in a nozzle cap ( 302 ), and a conical depression ( 308 ) defined in the dispensing pump (P). The safety ensures that the dispensing pump (P) is only actuated with the discharge aperture ( 300 ) of the dispensing pump (P) being oriented within a predetermined angular range of operation (alpha, beta). In a fifth embodiment, a dispensing pump (P) includes a pump cylinder ( 400 ) that has one end thereof in close proximity to a base ( 402 ) of a liquid reservoir ( 404 ). A capillary action is created to cause liquid (L) to be drawn into the inlet opening ( 406 ) of the pump cylinder ( 400 ). Alignment aids ( 502; 600 ) are also disclosed to allow for proper alignment of a discharge aperture ( 500; 602 ) of a dispensing pump (P) with the eye (E) of a user.
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