US Patent 9725927 System for intelligent door knob (handle)

A door lock system includes a knob and an apparatus that controls transmission of displacement or rotational mechanical energy. A bolt is coupled to a door, an input rod and an output rod. At least one of an interior or exterior knob is coupled to the bolt and the apparatus that controls transmission of displacement or rotational mechanical energy. An energy source is coupled to the apparatus that controls transmission of displacement or rotational mechanical energy. The mobile device provides authorization to engage the apparatus that controls transmission of displacement or rotational mechanical energy and allows a door user to manually open the door.