Hand-held pump type dispenser

Claim 1

An atomizer pump dispenser, comprising in combination: a. a container with a neck portion having a cylindrical inner wall that is provided with an annular groove adjacent the upper end of the neck portion; b. a resilient adaptor having i. a transverse wall portion having a central opening therein, ii. a cylindrical skirt portion integral with and depending from the transverse wall portion, the skirt portion being received in the neck portion of the container and being provided with a first annular bead on its exterior wall that is received in the groove, and the inner wall of the skirt portion being provided with a second annular bead adjacent its upper end, the lower end of the skirt having an arcuate bevel on its outer surface and an angular bevel on its inner surface; c. a dispensing pump assemblage including i. a stationary tubular member having an outwardly extending flange at its upper end, the flange being sealingly received between the second annular bead and the bottom of the transverse wall, ii. a reciprocable plunger member projecting through the opening in the transverse wall; and d. said second annular bead having i. a conical surface on its underside constituting a camming surface to facilitate by-pass of the bead and the flange when the adapter and dispensing pump assemblage are assembled together, and ii. a sharp undercut surface adapted to receive the edge of the flange to enable by-pass of the flange and bead in one direction but prevent by-pass in the opposite direction.