Taper well meter dose pump

Details Taper well meter dose pump Taper well meter dose pump

2005-05-10

2005-05-10

Derakshani, Philippe (Department: 3754)

Dispensing

With discharge assistant

Plural

C222S321900

Reexamination Certificate

active

06889875

ABSTRACT:
A dispensing device includes a hollow body coupled to a pump mechanism having a dip tube, and to a follower piston. A well provided in the piston is generally larger in diameter than the dip tube to allow fluid in the chamber to flow down into the well as the dip tube enters the well to facilitate fluid removal after a significant portion of the fluid has been removed. In some aspects, the well walls and dip tube end are substantially conical shaped with the well walls substantially parallel to the dip tube end or having a greater angle relative to the axis of the dip tube

REFERENCES:
patent: 5921438 (1999-07-01), Kobayashi et al.
patent: 6375045 (2002-04-01), Ki
patent: 6418978 (2002-07-01), Bailly

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