Locking device

Details Locking device Locking device

E - Fixed Constructions

05

C

292/20, 70/36

E05C 19/16 (2006.01) E05B 17/22 (2006.01) E05B 63/16 (2006.01) E05B 45/06 (2006.01) E05B 47/00 (2006.01)

Patent

CA 1136675

LOCKING DEVICE Abstract A locking device comprising driving members driven by a thumb turn from inside a room and by a key from outside the room, dead bolts brought into engagement with the driving members to advance or retreat to lock or unlock the room, and switches for detecting the advance and retreat of the dead bolts. Said dead bolts are formed by dividing the thickness of a dead bolt to two parts while said driving members by dividing the thickness of a driving member to two parts, said dead bolts are brought into engagement with said driving members to advance or retreat, and one of said driving members is driven by the thumb turn while the other by the key. An engaging means is provided between said two driving members or dead bolts in such a way that said driving member driven by the thumb turn is rotated integral with the other driving member driven by the key only when the latter is rotated to lock the room. Another engaging means is provided to rotate the driving member driven by the key integral with the other driving member driven by the thumb turn when the latter is rotated from outside to unlock the room. - 1 -

357823

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