Abstract: A door lock for use with an overhead door having a plurality of rollers or a bar moving along a track, includes a movable latch and a release mechanism. The movable latch is associated with the track and biased toward a door-locking position. The latch is configured to allow at least one of the rollers or bar to pass the latch as the overhead door closes. The latch is also configured to engage a roller or bar to prevent movement past the latch as the overhead door attempts to open. The release mechanism is mechanically coupled to the latch for withdrawing the latch from the track to allow the roller or bar to pass by the latch and the overhead door to open. A door position sensor is also disclosed including a movable lever and an electronic means for sensing the position of the lever.

Abstract: A locking mechanism includes a frame having a movement obstruction arm movable into a track on which rollers of an overhead door will move. When any roller on the door abuts against the arm, it will obstruct any further opening movement of the overhead door. A camming means is associated with the movement obstruction arm to automatically shift the same to a position out of the trackway when the door is moving back to the closed position. A control module is operable with the locking mechanism and receives a signal from a locking mechanism indicative of whether or not the locking mechanism is opened or closed. The control module will thereupon provide an opening signal to an opener for the overhead door.

Abstract: A locking mechanism includes a frame having a movement obstruction arm movable into a track on which rollers of an overhead door will move. When any roller on the door abuts against the arm, it will obstruct any further opening movement of the overhead door. A camming means is associated with the movement obstruction arm to automatically shift the same to a position out of the trackway when the door is moving back to the closed position. A control module is operable with the locking mechanism and receives a signal from a locking mechanism indicative of whether or not the locking mechanism is opened or closed. The control module will thereupon provide an opening signal to an opener for the overhead door.