| 摘要 |
<p>A double cylinder lock assembly includes a drive mechanism for extending and retracting a bolt, and exterior and interior key cylinder on opposite sides of said drive mechanism. The assembly further includes a torque blade extending from one of the key cylinders through the drive mechanism in operable engagement therewith toward the other key cylinder. An engagable clutch is disposed between the torque blade and the interior key cylinder. The clutch includes a pair of disengagable drive members, one of which is engagable by the torque blade and rotatable therewith and the second of which is rotatable with the interior key cylinder. The second engageable drive member includes a drive lug extending radially inward towards the horizontal axis of the interior key cylinder. The first drive member has a radially extending slot and is normally biased in an axially spaced position with respect to the second drive member and is axially movable theretowards in response to a key inserted into said interior cylinder to place the drive lug into driving engagement with the radially extending slot.</p> |
