| 摘要 |
<p>A dropping tube having a tubular body with a convergent outlet tip and an elastic squeeze bulb on the opposite end is provided with increased capacity by making part of the rigid body, adjacent to the bulb, longer in internal and external dia. The coaxial cylindrical sections, integrated end to end, are easier to fabricate than designs involving bulbous or other locally undercut profiles to increase the dropper capacity while retaining a standard, fine, tip profile. Opt. the larger part of the compound tube has an external annular rib at an intermediate level, for e.g. clamping to a container mouth.</p> |
