Endlessly clockwise/counterclockwise idly rotatable ...
1997-1-7 · An endlessly clockwise/counterclockwise idly rotatable burglarproof door lock in which a rotary switch of a rotary switch assembly is formed with a central projecting hub on a front surface thereof. The projecting hub has a recess frame, a notch and an engaging socket. A circular hole is formed on the rotary switch beside the projecting hub.