Protective shield device

Details Protective shield device Protective shield device

1979-01-15

1980-09-09

Church, Craig E.

Radiant energy

Radiation controlling means

250511, 250520, G21F 504

Patent

active

042219710

ABSTRACT:
A protective shield device for mounting on an X-ray machine in the path of an X-ray beam characterized as including a first shield plate having a control aperture bounded by material opaque to X-rays, which is adapted to be disposed in alignment with the X-ray beam for limiting the size and configuration of such beam to that of the control aperture; and a second shield plate having first and second apertures, which are bounded by material opaque to X-rays and adapted to be selectively/alternately positioned in alignment with the control aperture upon relative movements of the first and second shield plates in order to selectively provide for three X-ray beam configurations varying in size and/or configuration one from another.

REFERENCES:
patent: 3631249 (1971-12-01), Friede
patent: 3784818 (1974-01-01), Stoeckel
patent: 4048498 (1977-09-01), Gerbach

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