Abstract: A combination of a lid knob and tool having interlocking capability provides an easily removed tool with a handle for applying an added prying, lifting or twisting force to a lid. The vertical cross-section of a sliding interlocking engagement is a dovetail shape. The knob is elongate and the slidable engagement between the tool assembly and the elongate knob positioned horizontally across the top of the lid allows for the selective positioning of the tool at different points on the knob.

Abstract: A hazardous materials containment bottle provides greater sealing against the environment by the combination of a funnel-like cone-shaped insert with a lid which includes a downward projecting stopper that mates with an aperture in the center of the insert. A second sealing point is provided by a circular rim at the top of the insert which is compressed between a ledge along the top of the bottle sidewall and the underside of the lid. A third sealing point is provided by a gasket between the outer circumference of the lid and a flange around the mouth of the bottle.

Abstract: A ballistic fuse, which converts mechanical energy derived from the initial firing to stored electrical energy used to energize a later detonation, having piezoelectric polymer film strip with oppositely polarized layers on opposite surfaces, is pre-folded end to end before pleating and stacking in order to place both halves of a surface layer of one polarity into mutually contacting relationship, thereby reducing the risk of short circuits, and furthermore to double the bend radius required for pleating, thereby decreasing the risk of hinge failure due to bending stress at the pleated folds, and the continuous pattern of circles joined side by side in each layer is printed with conductive silver ink on the polymer film to eliminate the necessity of joining surfaces of like polarity with individual leads.