| 摘要 |
<p>A cylinder lock for a key having a profiled back for the control of additional functions of the lock upon its withdrawal wherein the key includes a transversely directed projection and the lock-cylinder has a longitudinal groove. A cylinder plug, and a keyway, are provided. The projection of the key extends into the longitudinal groove upon insertion and withdrawal. The key projects from the keyway past the surface of the cylinder plug and penetrates into a space beyond the longitudinal groove for maintaining the key in its inserted position. A lock bolt, e.g., of a steering wheel lock, is released by the control member upon entrainment thereof by the key projection.</p> |
