Door lock with clutching mechanism

摘要

A door lock having a clutching mechanism for selectively engaging and disengaging the outer handle of the lock from a key spindle having latch scoops for operably engaging a latch slide. The key spindle contains a cam mechanism for moving a dogging arm from a clutched position where the outer handle through a keyed outer spindle is keyed to the key spindle to an unclutched position where the dogging arm is positioned within a circumferentially extending slot which permits about 60° rotation of the outer handle relative to the key spindle without movement of the key spindle. Hard stops are provided on an outer driver and outer hub which limit movement of the outer handle to less than the rotation permitted by the clutching mechanism.