Powder-containing sifter bottle

Abstract

A package has a bottle formed with an annular open and rigid neck centered on an axis, a mass of finely divided powder in the bottle, an inner part engaged over the open neck and formed with an array of throughgoing holes, an outer part engaged over the inner part, formed with a similar array of throughgoing holes, and rotatable about the axis between an open position with its holes aligned with the holes of the inner part and a closed position with its holes out of alignment with the holes of the inner part. A flexible annular lip formed unitarily with the neck projects axially outward therefrom and elastically engages the inner part around the array of holes thereof. The inner part has a radially inwardly directed surface and the neck has an outer surface formed offset from the lip with a radially outwardly directed surface confronting the surface of the inner part. One of the surfaces is formed with an axially extending and radially open groove and the other of the surfaces is formed with a generally complementary, axially extending and radially projecting ridge engaged in the groove so that the ridge and groove lock the inner part on the neck against rotation thereon.

Dependencies are inferred from the claim text.