초록 ▼

Liquid dispensing apparatus is disclosed having at least one liquid dispensing chamber and an associated prefill chamber with displacement mechanism for transferring liquid therefrom to the dispensing chamber. The dispensing chamber is in communication with the prefill chamber over a weir so that li

Liquid dispensing apparatus is disclosed having at least one liquid dispensing chamber and an associated prefill chamber with displacement mechanism for transferring liquid therefrom to the dispensing chamber. The dispensing chamber is in communication with the prefill chamber over a weir so that liquid in the dispensing chamber in excess of a predetermined measure flows back over the weir to the prefill chamber. The dispensing chamber has an outlet openable and closable by a seal to dispense the measure held in the dispensing chamber.

대표청구항 ▼

Liquid dispensing apparatus comprising: a first stationary liquid dispensing chamber defining therein a volume measure and having an outlet, first valve means for opening and closing the outlet, a prefill chamber, and filling means for filling the first dispensing chamber with liquid from the prefil

Liquid dispensing apparatus comprising: a first stationary liquid dispensing chamber defining therein a volume measure and having an outlet, first valve means for opening and closing the outlet, a prefill chamber, and filling means for filling the first dispensing chamber with liquid from the prefill chamber; a second stationary liquid dispensing chamber defining therein a volume measure and having an outlet, second valve means for opening and closing the outlet of the second dispensing chamber, said filling means filling the second dispensing chamber with liquid from the prefill chamber; and control means for independently operating the first and second valve means of each dispensing chamber, and for independently operating said filling means from the operation of said first and second valve means such that said control means selectively reciprocates said filling means relative to said first and second stationary liquid dispensing chambers to displace liquid from said prefill chamber into said dispensing chambers, and, selectively dispense contents from the respective outlet of either or both dispensing chambers by opening said valve means; said control means being coupled to a sensing means which disables said valve means in the event the filling means fails to displace a sufficient amount of liquid into said dispensing chambers during a cycle; the first and second dispensing chambers being in communication with the prefill chamber in such a way that liquid in excess of the measure overflows back to the prefill chamber.