Patent ID: 8555685

Claim:
An electrically controlled door lock device, comprising: a lockset with an inside handle, an outside handle, a spring loaded continuous spindle defining a spindle axis disposed in a central plane and biased to maintain a lockset's latch in projected position and connecting said lockset and said outside handle; a first half and a second half of a clutch connecting said continuous spindle and said inside handle; a spring maintaining said second half of said clutch in predetermined position relative to said first half of said clutch; and a mechanical means blocking said first half of said clutch and an electromechanical means controlling a blocking means, said blocking means disposed on one side of said plane and being displaceable on a blocking axis perpendicular to and intersecting said spindle axis, said mechanical means disposed on said second half of said clutch, allowing said second half of said clutch some predetermined degree of free rotation before it engages with said first half of said clutch, said mechanical means built into second half of said clutch, mechanically inhibiting said blocking means, overriding said electromechanical means while said second half is freely rotating.