US Patent 8109037 Active sealing system for single-hung door/window

A combined sealing system for connecting a first panel to a frame includes a first, second, and third active sealing systems. The first active sealing system engages a sill rail of the first panel with a sill of the frame. The second active sealing system engages a meeting rail of the first panel with a meeting rail of a second panel within the frame. The third active sealing system engages a stile rail of the sash with a jamb of the frame. Upon the first panel being in a closed position relative to the frame, each of the first, second, and third active sealing systems having a locked configuration and an unlocked configuration.