Drop dispenser with vent

Claim 1

An improved drop dispenser of the type including storage container having a spout member of flexible resilient material that provides thereon a restricted drop-defining tip, said improved dispenser comprising, in combination: the spout member being generally conical and elongated and having at its distal apex end the drop-defining tip, and two opposed portions of the spout member intermediate the ends of the spout being flattened and indented toward each other relative to the projected conical configuration of the spout to define opposed pinch-surfaces that are distinguishable by feel and converge in the direction toward the drop-defining tip and are adapted to be engaged by and between the thumb and opposed finger of one hand, so as to provide for pinching of the spout to controllably express a drop of liquid from the drop-defining tip of the spout, the walls of the dispenser adjacent the drop-defining tip providing an apex angle that tends to retain liquid therein, a vent hole in said spout member located closer to the other end of said spout member than to said apex end of the spout member, so as to relieve expansion of gas within the storage container without discharging liquid retained in the apex angle through the drop-dispensing tip.