Glass breakage detector with self-aligning housing

Details Glass breakage detector with self-aligning housing Glass breakage detector with self-aligning housing

1989-01-10

1990-08-14

Swann, III., Glen R.

Communications: electrical

Condition responsive indicating system

Specific condition

310348, 340693, G08B 1304

Patent

active

049490737

ABSTRACT:
A glass fracture detection system includes a circuit having a sensor for providing an output signal when a glass fracture occurs. The sensor is positioned within a housing so that, when the housing is mounted on the surface of the glass adjacent the frame in which the glass is encased, the sensor is automatically positioned in communication with the glass surface at a specified distance from the frame, which distance is selected so as to reduce damping of the output signal due to the presence of the frame and to reduce signals reflected from the frame to the sensor.

REFERENCES:
patent: 3863250 (1975-01-01), McCluskey, Jr.
patent: 4054867 (1977-10-01), Owens
patent: 4112420 (1978-09-01), Mifune et al.

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