| 摘要 |
<p>A key-controlled locking device (10) suitable for hydraulic or pneumatic systems and provided with a blind channel (6) communicating with the inner hydraulic circuit of the device (10) is disclosed, said channel (6) extending for almost the whole height of the slot (2) of the key lock, such that a an attempted shear of said slot - intended for removal of the same key lock - leads to a leakage from the channel (6) of the working fluid and to a consequent pressure drop thus causing an irreversible stop condition of the machine said device (10) is applied to.</p> |
