Abstract: The present invention is a collapsible liner for use in a bulk container. The liner comprises a first flexible panel, a second flexible panel, a first seal, a second seal, and a tab. The first flexible panel includes a first longitudinal edge. The second flexible panel includes a second longitudinal edge. The first seal joins the first and second panels near the first and second longitudinal edges and runs generally parallel to the first and second edges. The second seal joins the first and second panels and is generally oblique to the first seal. At least one of the panels extends across at least one of the seals to form the tab, which includes an attachment feature. The attachment feature may be a piece of tape affixed to the tab. The attachment feature may be a strip of fabric or other reinforcement material melted into the tab, sealed within the tab or affixed to the tab via an adhesive. The attachment feature may be a hole with sealed or unsealed edges.

Abstract: The invention generally relates to ladders and indicators and specifically to safe inclination indicators for ladders. This invention is designed to indicate the optimal inclination of a ladder for stability and is read from both the front and side of the ladder, using a pendulum control arm that lines up with preset index markings at 75½ degrees from the horizontal. Another object of our invention is to provide a self-clamping device with a built-in safety release mechanism. A further object of our invention is that it can be used on ladders of any length and it does not affect the strength of the ladder.