Single-leaf overhead gate and pre-tensioning device therefor

摘要

A movable door panel (12) can tip over between a vertical closing position and a horizontal opening position. A device (20) for balancing the door's weight pretensions the door panel in an opening direction. A guiding device (14) guides the movement of the movable door panel, which has a panel (32) and top (40) and bottom (50) locking devices for grasping the guiding device. The bottom locking device has a lever clearance between a locking point (52) on the guiding device and the panel. An independent claim is also included for a pretensioning device for a single-scarf overhead gateway.