US Patent 8484899 Driving and driven sealing systems for single-hung door/window

A combination sealing system includes a driving sealing system, a driven sealing system, and a drive system. The driving sealing system includes a tongue attached to and extending away from a sash of a first panel, and a receiver attached to and within a frame. The driven sealing system includes a rotational member connected to a meeting rail of a second panel, and a first catch connected to a meeting rail of the first panel. The drive system is attached to the receiver and the rotational member. The first catch is configured to engage the rotational member. The receiver is configured to receive the tongue. The first panel is movable between an open position and a completely closed position. Prior to the first panel being in the completely closed position, the drive system transfer motion within the drive sealing system to the driven sealing system.