Radiant energy – Invisible radiant energy responsive electric signalling – With means to inspect passive solid objects
Patent
1983-01-17
1986-04-01
Howell, Janice A.
Radiant energy
Invisible radiant energy responsive electric signalling
With means to inspect passive solid objects
2503591, 378 59, G01N 2300
Patent
active
045800537
ABSTRACT:
Disclosed is a device employing radiation emission and backscatter detection for inspection of tubular goods for defects. A shutter mechanism is interposed between the radiation source and the tubular goods during inspection operations to control the transmission of radiation. The shutter mechanism is electrically activated to an open position and resiliently biased to a closed position. When the shutter mechanism is deactivated, it is automatically closed to prevent undesired emission of harmful radiation.
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Howell Janice A.
William B. Wilson Mfg. Co.
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