Abstract: An adjustable window awning/light shelf includes a canopy attached to supports on both sides of the window. The supports are engaged with vertical drive screws providing for the possibility of moving the canopy up and down. Each drive screw is connected with a common drive shaft. During the cooling season, the canopy is disposed at the top of the window, shading the window from the sun. During the heating season, the canopy is brought down to the bottom of the window by rotating the drive shaft, which in turn rotates the drive screws and moves the supports with the canopy down. Canopy's angle relative to the window increases. When in the bottom position, the awning performs as a light shelf, reflecting sunlight into the window and increasing the amount of sunlight and solar heat entering the building through the window.

Abstract: An adjustable window awning/light shelf includes a canopy attached to supports on both sides of the window. The supports are engaged with vertical drive screws providing for the possibility of moving the canopy up and down. Each drive screw is connected with a common drive shaft. During the cooling season, the canopy is disposed at the top of the window, shading the window from the sun. During the heating season, the canopy is brought down to the bottom of the window by rotating the drive shaft, which in turn rotates the drive screws and moves the supports with the canopy down. Canopy's angle relative to the window increases. When in the bottom position, the awning performs as a light shelf, reflecting sunlight into the window and increasing the amount of sunlight and solar heat entering the building through the window.

Abstract: A rigid retractable patio or window awning includes a number of rigid panels disposed in a tiered relationship with each other. Each lower panel is slidably connected with its respective upper panel via a set of slides. The top panel remains stationary. An awning operating mechanism includes arms connected via swivel joints with the bottom panel. Each arm also is connected via a threaded nut with a drive screw. The awning is extended by rotating the drive screw, which causes the nuts to travel along the drive screw causing the arms to push the bottom panel outwardly and the bottom panel to pull along any intermediate panels. The awning is retracted by rotating the drive screw in the opposite direction.

Abstract: An adjustable window awning/light shelf includes a canopy attached to support elements installed on both sides of the window. The support elements are engaged with vertical drive screws providing for the possibility of moving the canopy up and down. Each drive screw is connected with a common drive shaft. During the cooling season, when the window needs to be shaded, the canopy is disposed at the top of the window. When shade is not required, the canopy is brought down to the bottom of the window by rotating the drive shaft, which in turn rotates the drive screws and moves the support elements with the canopy down. When in the bottom position, the awning performs as a light shelf, reflecting sunlight from its top surface into the window and increasing the amount of sunlight and solar heat entering the building through the window.

Abstract: A retractable rigid window awning includes a number of U-shaped panels pivotally attached to a building on the sides of a window. In the retracted position, the panels are disposed above the window, in tiers. Each panel has a pair of actuators that enable its extension and retraction. Each actuator is attached to the panel at one end and to a movable nut at the other end via articulated joints. The nuts are installed on a driving screw attached to the building. The awning is extended by rotating the screw, which causes the nuts to travel along the screw. The actuators push their respective panels out and tilt them down. Depending on the length of actuators, panels travel different distances from the building creating a continuous shade over the window. The awning is retracted by rotating the screw in the opposite direction.