Radiant energy – Invisible radiant energy responsive electric signalling
Patent
1986-02-26
1987-09-22
Howell, Janice A.
Radiant energy
Invisible radiant energy responsive electric signalling
2503581, 2505051, G01J 100, G01F 2300
Patent
active
046957286
ABSTRACT:
A radiation detector apparatus having a shielded container made from radiation-resisting material, the container having a cover clamped on a heavy base, the cover having a protruding section which is received in a corresponding receding section in the base. The opposed faces of the receding and protruding sections are spaced apart to define a curvilinear passage therebetween, the passage having disposed therein, a slide retainer having a curvilinear configuration and provided with a pair of opposed tracks for receiving a test sample. The test sample comprises a test slide provided with a swab for picking up contaminated dust. The test slide is inserted between folds of a retainer, an upper fold having a radiation transparent window for registering with the swab. The retainer is transported on a test slide carrier into the interior of the shielded container via the slide retainer. The top is provided with an interior chamber for housing a detector which is connected by a cable passing through a convoluted conduit passage to a connector on the exterior surface of the cover for a further connection by a cable to a radiation-reading instrument. The interengaging wall portions of the top and the base provide a minimum of 2-inch radiation protection to the chamber containing the detector.
REFERENCES:
patent: 3026414 (1962-03-01), Commins
patent: 3419720 (1968-12-01), Debye
patent: 3643096 (1972-02-01), Jeffries
patent: 3655983 (1972-04-01), Forrer
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