Glass breakage detector with self-aligning housing
First Claim
1. A glass fracture detection system for use with a glass encased in a frame, said system comprisingcircuit means, including a sensor element for sensing a fracture of said glass, for providing an output signal when a glass fracture occurs;
- housing means containing said circuit means, the sensor element thereof being positioned within said housing means so that, when said housing means is mounted on the surface of said glass adjacent said frame, the sensor element is automatically positioned in communication with said glass surface at a specified distance from said frame, which distance is selected so as to reduce damping of said output signal by said frame and to reduce signals reflected from said frame to the sensor element.
1 Assignment
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Accused Products
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.
6 Citations
9 Claims
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1. A glass fracture detection system for use with a glass encased in a frame, said system comprising
circuit means, including a sensor element for sensing a fracture of said glass, for providing an output signal when a glass fracture occurs; housing means containing said circuit means, the sensor element thereof being positioned within said housing means so that, when said housing means is mounted on the surface of said glass adjacent said frame, the sensor element is automatically positioned in communication with said glass surface at a specified distance from said frame, which distance is selected so as to reduce damping of said output signal by said frame and to reduce signals reflected from said frame to the sensor element. - View Dependent Claims (2, 3, 4, 5, 6, 7, 9)
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8. A glass fracture detection system in accordance 7 wherein said flexible member is a semi-rigid plastic tab element.
Specification