| 摘要 |
<p>A detergent dispenser including a container having a bottom formed with a downwardly depending tubular portion provided with external threads thereon, a plug having a plurality of longitudinal grooves and an enlarged annular node at an intermediate portion, an upper packing ring mounted on a top of the enlarged annular node of the plug, a lower packing ring mounted on a bottom of the enlarged annular node of the plug, an internally threaded sleeve having an upper opening and a lower opening which is smaller than the upper opening and the enlarged annular node of the plug in diameter, and a buoy threadedly engaged with the lower end of the plug.</p> |
