X-ray diagnostic apparatus for X-ray film photographs with an au

Details X-ray diagnostic apparatus for X-ray film photographs with an au X-ray diagnostic apparatus for X-ray film photographs with an au

1976-09-29

1978-05-02

Borchelt, Archie R.

Radiant energy

Automatic/serial detection of similar sources

250401, 250413, G03B 4116

Patent

active

040876861

ABSTRACT:
In the illustrated embodiments a logical switching member is energized from a common power supply at the time that a manual switch is actuated for initiating an x-ray exposure. If the logical switching member does not receive an inhibiting signal within a definite inhibition interval less than a minimum exposure time, the switching member reaches a normal operating state and supplies its logical output signal to turn off the x-ray source. The inhibiting signal is not generated if the radiation detector fails to receive radiation from the x-ray source, or if there is a circuit failure in the inhibiting signal generating circuitry connected to the input of the switching member, or if the dosage fails to increase at least at a selected minimum rate during the inhibition time interval.

REFERENCES:
patent: 3775669 (1973-11-01), Baker
patent: 3911273 (1975-10-01), Franke
patent: 3916251 (1975-10-01), Hernandez et al.
patent: 3991314 (1976-11-01), Schmitman et al.

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