Abstract: An improved device for forming a weather-tight seal to a vent pipe and over a roof flashing. The device utilizes a high durability elastomeric material with a truncated conical shape and thickened upper lip to form a rain shed over the roof flashing, thereby ensuring a tight, durable seal to the vent pipe that prevents intrusion of moisture between the vent pipe and roof flashing.

Abstract: A roof system which includes a generally moisture and gas impervious membrane connected to the roof structure at its perimeter. A suction device driven by the wind or electrical motors or a combination of both creates a suction between the membrane and the roof substrate which causes the membrane to be held closely to the roof substrate. The wind driven suction devices increase the suction between the membrane and roof substrate in direct proportion to the velocity of the wind crossing the roof area.

Abstract: A rainwater run-off enhancement system for flexible reservoir covers which have substantial portions which are horizontal and in two way tension forming large flat areas. Elongated weights are placed on the flat areas forming depressions which collect and channel rainwater which flows into sumps formed in the cover.

Abstract: A flexible cover for placement upon the fluid surface of an open reservoir. A plurality of elongated weights form elongated sumps in the cover for the collection of surface water. All horizontal portions of the cover and the sump walls are in biaxial tension. A perimeter gas manifold at the periphery of the reservoir receives gas generated beneath the cover. The flow of gas to the periphery is enhanced by varying the linear weight of the sump weights or by placing small weights on the horizontal cover portions. Floats may also be placed beneath the cover to collect the gas. Different weight cover portions are also used to enhance gas migration to gas manifolds. The cover may also be formed with floats adjacent the sumps to facilitate the removal of gas driven against the float by ambient winds.

Abstract: A flexible cover for an open reservoir covering the entire reservoir characterized by tensioned plates formed over substantially the entire surface area, a central sump and interconnecting pre-programmed positioned sumps. Lines of segmented weights are positioned with respect to the cover and form the sumps. The reservoirs may take a number of configurations; all of which can use the cover of the present invention where the weight placement parameters are met.

Abstract: A flexible impermeable cover for a reservoir which completely covers the fluid in the reservoir and facilitates the removal of surface rainwater to a defined peripheral sump immediately adjacent and completely surrounding a central floating cover portion. Float means are attached to at least substantially the entire border area of the central portion and weight means are affixed to the cover outwardly of the central portion and adjacent the float means in substantially all of the border area so as to tension all of the central portion. The weight means also create a defined peripheral sump outwardly and immediately adjacent the entire border area of the central portion which collects the surface rainwater from the central portion.

Abstract: A heat transfer system for the heating of water by solar energy. The apparatus is especially suitable for heating large quantities of water by small temperature increments by circulating the water in repeated cycles in a thin layer between two thin flexible sheets of a dark colored panel. The apparatus includes one or more large panels disposed on a sloping surface exposed to the sun. A pumping means supplies a continuous supply of water to be warmed to the upper edge of the panel. A distributor pipe, evenly distributes the water along the top edge of the panel where it flows over a member for spreading the water evenly over the entire surface area of the inside of the panel. A collector pipe collects the water at the bottom edge of the panel and a return piping system returns the warmed water to the pool of water.

Abstract: A flexible sheet of fluid impervious material of sufficient area to substantially cover the sidewalls and bottom of the reservoir when substantially empty and to cover and form laterally fixed positioned and well defined inter-connected surface water canals when the reservoir is filled at various levels. The surface water canals are adapted to receive, store and channel surface water which normally falls on the reservoir as rain or snow to the edge of the reservoir. The means for forming the fixed horizontally positioned canals also function to form taut, substantially horizontal portions of the cover. The depth of the canals vary as the level of the reservoir changes. The cover is supported by displacement of water rather than by separate float means.