Unlocking device for supplemental door lock

Details Unlocking device for supplemental door lock Unlocking device for supplemental door lock

E - Fixed Constructions

05

C

E05C 17/14 (2006.01) E05B 17/20 (2006.01) E05B 19/20 (2006.01) E05C 17/16 (2006.01)

Patent

CA 2406145

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.

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