| 摘要 |
<p>Pop-Up Indicator Lock Cylinder (1) with distinctive keys for the owner (600), an employee (700), and a third party (800) whose right to enter is legitimate only upon notice, or in an emergency. The pop-up indicators (750, 850) are brightly and differently colored. The lock cannot be circumvented by pressing a pop-up in and endeavoring to turn the key, because the pop-up's barrel (754, 854) blocks rotation of the lock's core (20) unless the barrel is fully shot forward. Once triggered, the pop-up remains visible and in a locked position until the owner resets it. Meanwhile, the employee and the third party enjoy unimpeded access. Since only the employee-key (700) and the third-party key (800) are capable of triggering their respective pop-up (750, 850), a poped-out pop-out furnishes immediate, primae facie proof of entry.</p> |
