Radiation monitor
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United States of America Patent
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Jul 25, 2017
Grant Date -
Dec 1, 2016
app pub date -
Oct 15, 2015
filing date -
May 29, 2015
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
The radiation monitor includes: a shutter; a calculation section; an AC solenoid; a temperature switch which is attached to the AC solenoid; a circuit protector which has a contact and is connected in series to the AC solenoid; and a mode selection switch connected in series to the AC solenoid. The shutter is maintained in a closed state when the mode selection switch is set to a normal mode; the mode selection switch is changed from the normal mode to a check radiation source mode, thereby flowing an AC current through the AC solenoid to change the shutter from the closed state to an opened state; and the contact of the temperature switch is reversed from the opened state to the closed state, thereby disconnecting the contact of the circuit protector to interrupt the AC current that flows through the AC solenoid.
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