| 摘要 |
<p>An unlocking device for a supplemental door lock of the ball hook and U-shaped catch type is disclosed. The unlocking device comprises a thin elongated resilient key. The resilient key is designed to engage the perpendicular corner formed by the standard door stop and associated door jamb. The key includes a resilient catch release portion that exerts force on the U-shaped catch as the door is closed. Upon closing the door, the key causes the U-shaped catch to release the ball hook.</p> |
