Alarm incorporated cylinder lock
AssigneeKale Kilit Ve Kalip Sanayii A.S.
InventorsFeramuz Karsil, Ahmet Bilgic, Kadir Icibal
Life of this patent
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Abstract
A cylinder lock having a first cylinder half, which in use, is mounted on the indoor side and a second cylinder half, which in use, is mounted on the outdoor side of a door, is disclosed. The cylinder lock further comprises a notch cut out on the outdoor end of the second cylinder half for forming a breakable tip portion on the second cylinder half. A rod extends along the second cylinder half and enters, partly at its first end, in the first cylinder half. The rod is secured, at its second end, to the tip portion of the second cylinder half. The cylinder lock further comprises a volume formed on the first cylinder half for accommodating an alarm circuitry including at least an electronic circuit board, a magnetic switch and a magnet.
Claims9
A cylinder lock (1) having a first cylinder half (21), which in use, is mounted on the indoor side and a second cylinder half (22), which in use, is mounted on the outdoor side of a door, said cylinder lock further comprising,
- a notch (10) cut out on the outdoor end of the second cylinder half (22) for forming a breakable tip portion (8) on said second cylinder half,
- a rod (2) which extends along the second cylinder half (22) and enters, partly at its first end, in said first cylinder half (21) and which is secured, at its second end, to said tip portion (8) of said second cylinder half,
- a volume formed on said first cylinder half (21) accommodating an alarm circuitry including at least an electronic circuit board (5), a magnetic switch (3) and a magnet (13),
- wherein
- said first end of the rod (2) is interposed between said magnetic switch (3) and said magnet (13) of the alarm circuitry such that when the tip portion (8) of said second cylinder half (22) breaks apart, said rod (2) slides out of the first cylinder half for detection of a break-in attempt.
Dependencies are inferred from the claim text.