Doser for portable liquids and fluent materials

Abstract

The present invention is a narrow neck dosage device for dispensing a predetermined quantity of product. An insert is installed in a narrow neck of a container with a bottom disk protruding into the body of the container and a top device within the neck of the container. The bottom disk initially hangs within the container body, while the top device rests on a divider that separates the neck from the container body. The top device can be upward angled blades, angled blades or a circular disc. A shaft connects the top devices and the bottom disk. The shaft also can have multiple configurations, such as spiral, flat helix, or random kinks. The shaft spins, rocks or oscillates and passes through a hole in the center of the divider. The divider has pre-sized holes that allow product to pass through. When the container is tipped into a dispensing position, fluid pressure moves the insert up the neck of the container until the bottom disk reaches the divider and seals the neck off from the body of the container. The container is returned to an upright position after dispensing and the weight of the insert spins, rocks or oscillates the insert downward into the starting position.