| 摘要 |
<p>A liquid dispenser having a liquid containment barrel with a slidable dispensing-effecting and sealing plunger, the plunger having a self-sealing slit formed therein to enable filling therethrough of the dispenser barrel, the slit being formed at the bottom forwardly facing end of a threaded handle-connecting recess in the exposed rear portion of the plunger. A male fill member is employed to be inserted into and releasably open the plunger slit and to selectively fill the barrel with liquid, while venting past the male fill member through a vent eye formed in the opened slit by insertion of the male fill member. The male fill member is assisted in opening the plunger slit by securing the member into the handle-receiving threaded recess, and subsequently a handle is screwed into this screw-threaded recess to enable selected manual dispensing of liquid from the dispenser. The preferred slitted plunger is molded as a single piece, and the slit therein is preferably formed by moving the plunger laterally past a knife edge to cut the self-sealing slit fully across the bottom of its generally cup-shaped extent.</p> |
