| 摘要 |
A one-piece filter for the distal end of a dip tube of a manually actuated liquid sprayer has an elongated tubular body open at one end with a perforate bottom wall at its other end. The body has a first inner diameter and a smaller second inner diameter established by a plurality of inner spacers for engaging the dip tube. The perforate bottom wall has an open mesh area defined by a plurality of filter openings, a first set of which occupies a central area of the bottom wall within the second diameter, and a second set of which openings occupies an annular area of the bottom wall between the first and second diameters.
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