Panic proof passage lock set

A lock set comprising:

• a lock housing for mounting on a door an inner operating handle and an outer operating handle mounted for rotation about said lock housing;
• a locking plug rotatably mounted in a bore within said housing for effecting a locking and unlocking function upon rotation;
• means for preventing rotation of said locking plug within said housing;
• first cam means for deploying said means for preventing rotation of said locking plug in response to rotation of said first cam means;
• a secondary driver means operatively associated with rotation of an inside spindle for operatively driving a secondary cam means;
• said secondary cam means being mounted for concentric rotation with said first cam means, and in driving relationship with said first cam means;
• said secondary driver means effecting rotation of said secondary cam means and thereby said first cam means upon rotation of said inside spindle to effect rotation of said locking and unlocking plug;
• said lock housing is further provided with and outside spindle independently mounted and separated from said inside spindle for rotation in the lock housing;
• said locking plug being in driving engagement with said outside spindle and said outer operating handle connected wherewith;
• and said means for preventing rotation of said locking plug within said housing comprises a lock bar having radial linear displacement in and out of engagement with said locking plug wherein in its radially inward position it interferes with rotation of said locking plug and in its radially outward position it allows rotation of said locking plug.