| 摘要 |
<p>A hollow body (12) has a connected tubular discharge stem (16). The stem (16) has a tapered tip (18) formed with at least one discharge passage (20). An annular gasket (24) complementing the shape of the taper is normally seated on the tip (18) and valves off the passage (20). A hollow tubular shell (26) is over the stem (16) and carries the gasket (24) at its upper end. The shell (26) encloses a spring (36) working between the bottom (34) of the shell (26) and a fin (22) on the stem (16) spaced back from the tip (18). In operation, the shell (26) is moved away from the body (12) so liquid can discharge through the gasket (24).</p> |
