Abstract: A sliding window assembly includes a lower frame member forming a channel, a guide bracket within the channel and slideable along the length of the channel, and a sliding pane carried by the guide bracket between closed and open positions. A pull-pull cable drive assembly is operably secured to the guide bracket to move the sliding pane between the closed and open positions. The drive assembly includes a drive motor, a drive drum rotateable by the drive motor, and drive cable connecting ends of the guide bracket with the drive drum. The guide bracket and the transition blocks are each mechanically locked to limit vertical movement relative to the frame member in order to reduce inadvertent tilting of the sliding pane. In one embodiment, the guide bracket includes tabs which are adhered to faces of the sliding pane to form a mechanical lock therebetween.

Abstract: A sliding window assembly includes a lower frame member forming a channel, a guide bracket within the channel and slideable along the length of the channel, and a sliding pane carried by the guide bracket between closed and open positions. A pull-pull cable drive assembly is operably secured to the guide bracket to move the sliding pane between the closed and open positions. The drive assembly includes a drive motor, a drive drum rotateable by the drive motor, and drive cable connecting ends of the guide bracket with the drive drum. The guide bracket and the transition blocks are each mechanically locked to limit vertical movement relative to the frame member in order to reduce inadvertent tilting of the sliding pane. In one embodiment, the guide bracket includes tabs which are adhered to faces of the sliding pane to form a mechanical lock therebetween.