Importance

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Abstract

A pump dispenser comprises an actuator head (100) having a dispensing channel communicating with a nozzle outlet (122), a closure body (20) having a top facing (203), at least one engagement feature extending axially upward from the top facing, and a recess (210) formed in the top facing. The recess has a cylindrical sidewall (212) with a plurality of axially-aligned stoppers positioned along the cylindrical sidewall and an annular ledge (220) defining an inlet port at a bottom end of the recess, said ledge including a cylindrical abutment (240) extending axially upward within the recess (210). An internal plug (40) is positioned within the annular recess, and includes an annular disk (400) with at least one axially-aligned stopping flange (410) positioned at or around a periphery of said disk and a plurality of axially-aligned engagement flanges (420) positioned toward a center of said disk. A resilient bellows (30) has a cylindrical outlet (361) positioned in a deformable top wall (35) and a cylindrical enclosure (32) extending downward from the deformable top wall. The cylindrical outlet connects to a plurality of axial outlet flanges (362) extending below the deformable top wall and supporting a central engagement nub (364). The inlet port is selectively held sealed by the annular disk (400), which is secured by at least one of (i) the engagement flanges (420) coupling to the engagement nub (364) and (ii) the at least one stopping flange (410) abutting the terminal end of at least one of the axial outlet flanges.

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First Claim