초록 ▼

A dispenser mechanism is provided for capping squeeze-bottle type containers, wherein a dual valve arrangement provides for the dispensing of the contents of the container with automatic closure during periods of non-use. The contents of the container are not exposed to ambient until such time as it

A dispenser mechanism is provided for capping squeeze-bottle type containers, wherein a dual valve arrangement provides for the dispensing of the contents of the container with automatic closure during periods of non-use. The contents of the container are not exposed to ambient until such time as it is dispensed. The dual valves respond to differences in pressure, and cooperate to dispense the contents of the container, or seal the openings thereof during non-use. The cap may include a dispenser spout which is cleaned of material at the end of the dispensing period by the action of the dispenser mechanism herein.

대표청구항 ▼

A dispensing cap for dispensing materials contained in containers having flexible walls, comprising (a) a cap body; (b) an outlet passage in said body; (c) a feed tube in flow communication with said outlet passage for extending into a container connected to said body for engaging material therein;

A dispensing cap for dispensing materials contained in containers having flexible walls, comprising (a) a cap body; (b) an outlet passage in said body; (c) a feed tube in flow communication with said outlet passage for extending into a container connected to said body for engaging material therein; (d) container connection means on said body; (e) a return tube in flow communication with said outlet passage; the improvement characterized by (f) first valve means in said outlet passage positioned between said feed tube and said outlet passage; (g) first means biasing said first valve means against flow from said feed tube to said outlet passage; (h) whereby squeezing the flexible walls of a container attached to said body forces material therein up said feed tube overcoming said first biasing means; (i) second valve means in said outlet passage positioned between said outlet passage and said return tube; and (j) second means biasing said second valve means against flow from said outlet passage to said return tube; (k) whereby removing pressure from the flexible walls of a container attached to said body causes a reduction of pressure thereon so that ambient pressure forces open said second valve means against said second biasing means and closes said first valve means.