User-refilloable liquid dispensing container with vacuum actuated piston

摘要

A liquid dispensing container (10) capable of dispensing liquid in any orientation, the container (10) having a neck (17) and a body (11) defining a cavity (22), the cavity (22) having an inner wall and a rearwardly disposed opening. A removable liquid dispensing structure (20) is fluid-tightly disposed on the neck (17), and a piston (31) is disposed within the cavity (22) and has a peripheral edge disposed in sliding, fluid-tight engagement with the inner wall of the cavity (22) and capable of axial movement caused by negative pressure within the cavity (22) when liquid is dispensed via the dispensing structure.