| 摘要 |
<p>A mortise cylinder has a longitudinal axis and an exterior surface. A collar member has an internal dimension or diameter that is adapted to receive the mortise cylinder in close sliding relation. A locking member is adapted to surround the collar member about the exterior surface of the mortise cylinder, wherein the mortise cylinder is secured against axial movement relative to the collar. The collar is less rigid than the exterior surface of the mortise cylinder. According to the preferred embodiment of the present invention, the collar member is formed integrally with a cover that secures the lock assembly to a door.</p> |
