Deflection monitoring system

Details Deflection monitoring system Deflection monitoring system

1994-03-14

1995-04-04

Swann, Glen

Communications: electrical

Condition responsive indicating system

Specific condition

527413, 2502221, 340540, 340666, G08B 13183

Patent

active

054041325

ABSTRACT:
Deflections in support structures, due to external stress factors, can be detected by a series of laser beams. A laser is positioned at the perimeter of the structure. The laser generates a laser beam along a path adjacent to the structure, and the beam strikes a receiver across from the laser. Solid target blocks are positioned along the support structure. When deflection occurs in the support structure, the targets are concurrently displaced into the path of the laser beam. The receiver registers the break in the laser beam and activates an alarm. Each beam is set to detect deflection in the structure within predefined zones, and the alarm indicates the zone in which the laser beam path was broken by the deflection.

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patent: 4429496 (1984-02-01), Masri
patent: 4843372 (1989-06-01), Savino
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patent: 4936060 (1990-06-01), Gelinas et al.
patent: 4956947 (1990-09-01), Middleton
patent: 4964246 (1990-10-01), Kobori et al.

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