Patent ID: 9038317
Filing Date: 2015-05-26
Classification: E05F,E05Y

Abstract:
1. A power actuator for a window in a building, the power actuator comprising: a drive unit positioned within a sill of the window and including a motor; a cable system engagable with the drive unit for moving a pane of the window relative to a window frame between an opened position and a closed position; a controller electrically coupled to the drive unit and a power outlet located in the building; and a pulley positioned opposite of the sill of the window and the closed position of the pane of the window, wherein the cable system includes first and second cables driven by the motor, and two drums turnable in opposite directions and disposed next to one another in the sill of the window, wherein the first drum has a gear portion driven by a spur gear of the drive unit and directly engaged with a gear portion of the second drum, wherein the first cable winds about the first drum in a manner proportional to the second cable unwinding from the second drum, and wherein the first cable extends from the first drum in a direction opposite of the second cable extending from the second drum.