Abstract: Louvered roof systems are provided with one or more louvers. Such louvers can be combined in an assembly that is movable between an open condition and a closed condition. In the closed condition, louvers in the assembly engage one another. In such engagement, a leg extending generally transversely from one louver may include a wing that extends generally transversely to the leg and that abuts a surface of an adjacent louver. Additionally or alternatively, in such engagement, a leg extending transversely from one louver may be received in a notch in an adjacent louver. An end cap can include a downwardly extending flange that directs liquid flow from a louver's top surface and past its bottom surface to form droplets or streams to fall from a lower part of the flange and prevent travel of the liquid flow along the bottom surface of the louver.

Abstract: A method and system for controlling a fluid valve are described that avoid the effects of hysteresis. In hysteresis, the power signals associated with a valve position are different on the upstroke and downstroke. As a result, predicting the valve position can be difficult if you only know the current power signal. Instead of using upstrokes and downstrokes, a valve can momentarily be set to zero power, or a rest position when receiving a new command signal. This way the command signal is applied from a zero power or rest position, making the valve position more predictable and accurate.

Abstract: Louvered roof systems are provided with one or more louvers. Such louvers can be combined in an assembly that is movable between an open condition and a closed condition. In the closed condition, louvers in the assembly engage one another. In such engagement, a leg extending generally transversely from one louver may include a wing that extends generally transversely to the leg and that abuts a surface of an adjacent louver. Additionally or alternatively, in such engagement, a leg extending transversely from one louver may be received in a notch in an adjacent louver. An end cap can include a downwardly extending flange that directs liquid flow from a louver's top surface and past its bottom surface to form droplets or streams to fall from a lower part of the flange and prevent travel of the liquid flow along the bottom surface of the louver.

Abstract: Louvered roof systems are provided with one or more louvers. Such louvers can be combined in an assembly that is movable between an open condition and a closed condition. In the closed condition, louvers in the assembly engage one another. In such engagement, a leg extending generally transversely from one louver may include a wing that extends generally transversely to the leg and that abuts a surface of an adjacent louver. Additionally or alternatively, in such engagement, a leg extending transversely from one louver may be received in a notch in an adjacent louver.

Abstract: Louvered roof systems are provided with one or more louvers. Such louvers can be combined in an assembly that is movable between an open condition and a closed condition. In the closed condition, louvers in the assembly engage one another. In such engagement, a leg extending generally transversely from one louver may include a wing that extends generally transversely to the leg and that abuts a surface of an adjacent louver. Additionally or alternatively, in such engagement, a leg extending transversely from one louver may be received in a notch in an adjacent louver.

Abstract: Louvered roof systems are provided with one or more louvers. Such louvers can be combined in an assembly that is movable between an open condition and a closed condition. In the closed condition, louvers in the assembly engage one another. In such engagement, a leg extending generally transversely from one louver may include a wing that extends generally transversely to the leg and that abuts a surface of an adjacent louver. Additionally or alternatively, in such engagement, a leg extending transversely from one louver may be received in a notch in an adjacent louver.

Abstract: Louvered roof systems are provided with one or more louvers. Such louvers can be combined in an assembly that is movable between an open condition and a closed condition. In the closed condition, louvers in the assembly engage one another. In such engagement, a leg extending generally transversely from one louver may include a wing that extends generally transversely to the leg and that abuts a surface of an adjacent louver. Additionally or alternatively, in such engagement, a leg extending transversely from one louver may be received in a notch in an adjacent louver.