US Patent 11760604 Versatile elevator door interlock assembly

An illustrative example elevator door interlock includes at least one coupling roller supported on a base. A lock is configured to move relative to the base and the at least one coupling roller between a locking position and an unlocked position. An unlocking roller supported on the lock is situated to be moved by a vane of an elevator door coupler to move the lock into the unlocked position prior to the vane contacting the coupling roller. The elevator door interlock is compatible with a clamping type elevator door coupler and an expanding type elevator door coupler. The coupling roller is situated to be received between two vanes of the clamping type elevator door coupler or received against one of two vanes of the expanding type elevator door coupler.