Abstract: The present invention is a wall covering system comprising two or more sheet elements composed of a flexible, rigid, or semi-rigid material. Each sheet element has one or more sides with a smooth, non-linear profile. One non-linear side along each sheet element is arranged in a paired configuration so as to contact in a non-overlapping and interlocking fashion. The resultant non-linear seam minimizes color variations, avoids gaps, and overlapping between sheets thereby minimizing the visibility of the seam. An optional covering may be applied to one or both sides of the sheet element.

Abstract: A safety device suitable for escaping a building through a window thereof which includes a slide capable of lowering a building occupant along a cable in a controlled descent path. The slide comprises a plurality of pulleys through which the cable slidingly passes in a serpentine path. One of the pulleys includes a brake which is capable of closely controlling the rate of travel of the cable about the pulley. External controls permit the user to closely regulate the speed of descent by varying the braking pressure applied at the brake pulley.