Patent ID: 8684230

Claim:
A collapsible container for dispensing materials in predetermined dosage amounts, comprising: a substantially cylindrical hollow bottle section having external screw threads and made of a material which allows the same to collapse along its length while preserving its integrity as a holder of said materials; a substantially hollow, collapsing element secured to said bottle section and relatively turnable with respect thereto, having at least one interior-directed screw-like thread mating with said external screw threads of said bottle section and also comprising a hollow, capturing section for the collapsed portion of said bottle section produced by relative turning of said bottle section with respect to said collapsing element; said external screw threads having two or more spaced discontinuities; said collapsing element having an inwardly projecting, resilient tab which glides on said external screw threads when said bottle section is turned with respect to said collapsing element until said tab is aligned with one of said discontinuities, said tab element and said discontinuities, when aligned, thus providing an audible and/or tactile indication that a predetermined angular relative rotation of said bottle section with respect to said collapsing element has been accomplished.