Abstract: A universal, buoyant, lightweight, thermoplastic cover for a swimming pool and the like. The cover may be any color or shape and is adapted to continuously drain water that may otherwise accumulate on the exterior surface of the cover through an integral, longitudinally extending, woven mesh-like water drain apparatus. The drain apparatus may be centrally disposed, or otherwise suitably positioned on the cover, and laterally extends through the cover. A method to make the swimming pool cover is also disclosed.

Abstract: A lightweight multilayer heat reflective concrete cure blanket having a moisture-impervious top outer layer, a moisture impervious bottom outer layer, and the top and bottom layers sealingly connected to each other at the boundaries of the layers to form a moisture impervious chamber between the first and second layers. The chamber includes at least one insulative layer therein, and a heat reflective material is applied to an outer surface of the bottom layer to reflect heat emanating from the concrete when the blanket is placed over the concrete. A protective heat permeable layer is applied over the heat reflective material to protect the heat reflective material from chemicals and dirt in the concrete. In a further embodiment, a second heat reflective material is applied to an inner surface of the upper layer to reflect additional heat which radiates from the concrete through the insulative layer and back towards the concrete.

Abstract: A cover for protecting a pile or mound of particulate material in outside storage so that the material is not contaminated, eroded, dissolved or dispersed by the weather. The cover is provided by a plurality of elongated panels that are connected together along their side edges by seams so that the panels and seams extend perpendicularly from the perimeter of the base of the pile toward the top or apex thereof. Some of the panels of the cover are of a material that is porous to gas and nonporous to liquids, and other of the panels are of a material that is nonporous to both gas and liquids. The different porosity panels are arranged in alternating relation in the cover. The seams are reinforced by strips of reinforcing material sewn thereto. Supplemental lengths of weight retaining strips are secured to some of the perpendicularly extending seams at points spaced upwardly from the margin of the cover.