초록 ▼

A tubular article, such as a plastic bottle, of optionally stepped cross-sections, with one section next to one of the steps incorporating near vertical tucks permits collapsing of the article. Under an axial force, the bottle or article will collapse in a telescoping manner by inverting inside for

A tubular article, such as a plastic bottle, of optionally stepped cross-sections, with one section next to one of the steps incorporating near vertical tucks permits collapsing of the article. Under an axial force, the bottle or article will collapse in a telescoping manner by inverting inside for outside of the section with the tucks. The invention of the tucks stretch or expand them which increases the area enclosed by the cross-section and thereby allows the telescoping in a pre-determined manner. Reversing the axial force will cause the collapsed container to extend or expand.

대표청구항 ▼

An improved collapsible container comprising: a first end, a second end, a sidewall integral therewith joining the first end and the second end, the sidewall defining an interior space from an exteroir space about a longitudinal axis, where the flexible sidewall is parallel to the longitudinal axis;

An improved collapsible container comprising: a first end, a second end, a sidewall integral therewith joining the first end and the second end, the sidewall defining an interior space from an exteroir space about a longitudinal axis, where the flexible sidewall is parallel to the longitudinal axis; a first section in the sidewall, and a second section in the sidewall, the improvement comprising a plurality of longitudinal tucks approximately parallel to the axis of the sidewall in the first section, wherein the tucks may unfold and add to the perimeter of the first section to expand the perimeter sufficiently to permit the first section of the container to be turned inside out along the longitudinal axis and over the second section to collapse the container, where the tucks are peripherally spaced apart from one another and where the peripheral distance between the tucks is greater than the width of the tucks, when expanded; and a third section not having tucks also adjacent the first section such that the first section having tucks has the second section and the third section on either end of the first section, and wherein the tucks add to the perimeter of the first section sufficiently to permit it to be turned inside out to cover at least partially the second section and be contained at least partially by the third section to collapse the container.