Apparatus for controlling a door

摘要

Door check mechanism including a rack adapted to be coupled to and extend outward from the frame, a gear adapted to be arranged on the door, the gear having teeth and being arranged in engagement with the rack and a detent mechanism arranged in engagement with the rack and the gear for enabling the door to be positioned in a plurality of fixed positions and for preventing movement of the door to a different fixed position when a force exerted upon the door is below a threshold. The detent mechanism may include a cam having a pawl in engagement with the rack and a detent and a spring for biasing the detent against the gear to press the gear against the rack. The gear is rotatable along the rack which each position in which the pawl engages one of the teeth being a possible position of the door.