The present invention is a system and method for quickly securing a door to a door frame to protect the occupants of a room from an intruder while still allowing a user to open the door from within the secured room with a minimum of movements and time in the event of a dangerous situation in the room such as fire or other hazards. Embodiments of the invention are equally applicable to doors that open inwardly and outwardly relative to an area to be secured.

A locking member for locking a rod in a path for the rod to pass through, wherein the path is formed to have a substantially heart shape, wherein the locking member includes a speed regulation path portion for regulating entrance speed by causing the rod that enters the path to fluctuate, and a locking portion for locking the rod whose entering speed is regulated, wherein the speed regulation path portion extends in a vertical direction that is perpendicular to a width direction of the locking member, and the speed regulation path portion includes rod receiving portions that are disposed at a start edge and an end edge, wherein the rod receiving portions are for regulating the entering speed by receiving the fluctuation in a forward and backward direction of the rod that enters the speed regulation path portion.

A window or door limiting device is described having a striker assembly mounted on a window sash or door panel and a corresponding limiting assembly mounted on an adjacent window sash or door panel. The limiting assembly selectively engages the striker assembly with a rotary element to restrict movement of at least one of the first or second window sash or door panel relative to the other of the first or second window sash or door panel. The rotary element is rotatable to selectively engage or disengage the striker assembly to correspondingly restrict movement of one or more of the window sashes or door panels.

A device for restricting movement of a door includes a door member, a floor member, and a connecting member. The door member is fixedly mounted to a door and includes a first opening having a first predetermined shape. The floor member is fixedly mounted to a floor and includes a second opening having a second predetermined shape. The connecting member includes a first leg and a second leg. The first leg extends in a first direction and has a first end removeably engaging the first opening. The second leg extends in a second direction that is perpendicular to the first direction and has a second end removeably engaging the second opening simultaneously when the first end removeably engages the first opening thereby preventing rotation of the door.