| 摘要 |
<p>A knobset comprising a latch mechanism including an extendable deadbolt, a lock housing, a first spindle, a slide actuator, a slide housing mounted on the first spindle for supporting the slide actuator for linear displacement, spring means interconnecting the lock housing and the slide housing for establishing a neutral first spindle orientation, key operated means for displacing the slide actuator from a retracted position to an advanced position, the slide actuator having a notch therein, a locking slide including a detent portion spring biased in a selected direction to an advanced position whereat the detent portion is located within the slide actuator notch when the slide actuator is at the advanced position, means for preventing the displacement of the detent portion transverse to the selected direction, a blocking piece, and means for displacing the blocking piece from a retracted position whereat the detent portion is displaceable in the selected direction to an advanced position whereat the blocking piece prevents displacement of the detent portion in the selected direction, and means for preventing the displacement of the blocking piece by the locking slide in the selected direction when the blocking piece is at the advanced position.</p> |
