Fault detecting apparatus

Details Fault detecting apparatus Fault detecting apparatus

1985-12-18

1987-12-01

Howell, Janice A.

Radiant energy

Invisible radiant energy responsive electric signalling

Infrared responsive

2503581, 2503591, 374 4, G01J 100, G01F 2300

Patent

active

047106280

ABSTRACT:
A probe for detecting structural faults in materials comprises a body (10) pivotally mounting therein a bell crank lever (38). The latter mounts at one end an external foot (48) for engaging with the material and at its other end presents an optical window (44,46) normally disposed in a gap between aligned ends within the body (10) of fibre optic cables (24,30). An infra-red beam is transmitted along the cables (24,30) and any slight movement of the foot (48) caused by a fault in the material will displace the optical window to interrupt the infra-red beam and thus give an indication of structural or component failure. Such a probe is isolated electrically and is free from sparking and fire hazards.

REFERENCES:
patent: 4141247 (1979-02-01), Schlick
patent: 4513507 (1985-04-01), Laskowski
patent: 4522147 (1985-06-01), Kroll et al.

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