G - Physics – 08 – B
Patent
G - Physics
08
B
G08B 13/22 (2006.01) C08G 63/676 (2006.01) C09D 167/06 (2006.01) G08B 13/14 (2006.01)
Patent
CA 2138159
2138159 9325983 PCTABS00028 The invention concerns a method and device for protecting people or objects, an alarm signal being triggered when people or objects are approached or taken away without authorization. The aim of the invention is to provide a simple method of ensuring discrete, reliable protection for people or objects, while allowing the people or objects unrestricted mobility. To achieve this, the invention calls for an emitter (14) to emit a signal which prevents the alarm signal from being triggered until the distance between the emitter (14) and receiver (2) exceeds or falls below a pre-determined value or the transmission path between the emitter (14) and receiver (2) is interrupted. It is also possible to generate a range signal which is representative of the distance between two protection elements and which produces a variation in the pitch or loudness of the alarm signal, the variation depending on the magnitude of the range signal.
Kuhnert Eduard
Ridout & Maybee Llp
LandOfFree
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