Patent ID: 6168581
Filing Date: 2001-01-02
Classification: B01L

Abstract:
A drop dispenser for use on a container for liquid products having a threaded open end neck portion, a nipple having a discharge opening mounted on the open end of the neck and a circumferentially extending radially outwardly projecting collar spaced downwardly from the threaded portion of the neck, of said drop dispenser comprising an elongated sleeve member having internal threads cooperatively engageable with the threaded portion of the container and a dosing valve overlying and conforming generally in shape to the nipple portion of the container and a dispensing tip having a discharge opening mounted over the dosing valve and spaced therefrom to define a reservoir chamber, said dosing valve having a protruberance engageable with the discharge port in the nipple in a closed position and having seal means engaging the nipple in the closed position and means for limiting axial displacement of the sleeve member and means at the lower end of the sleeve cooperatively engaging the collar to limit axial displacement of the sleeve member relative to the container, whereby the reservoir chamber is filled with fluid from the container by turning the sleeve in a direction to move the closure away from a closed position on the nipple to an open position relative thereto, to thereby establish fluid communication between the container and the reservoir chamber, the fluid being dispensed through the fitting outlet from the reservoir chamber by squeezing the resilient fitting after the sleeve has been turned in a direction to move the closure to the closed position on the nipple thereby preventing the fluid from flowing from the resilient fitting back into the container.