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US 4,398,191 AGranted
Door interlock system for radioactive testing
AssigneeMobil Oil Corporation
InventorVictor L. Schoepf
Life of this patent
Estimating the term…
Abstract
An interlock system is provided wherein access to a test area containing radioactive material is prevented when testing is initiated and generation of harmful rays is prevented when access to the test area is gained during tests.
Claims3
An interlock system for a test area having an access door, test equipment contained therein, and means for supplying power to the test equipment, said system comprising:
- first switch means for connecting the test equipment to the means for supplying power;
- indicator means for determining whether the access door is open;
- first disabling means responsive to said indicator means for disconnecting the test equipment from the means for supplying power whenever the access door is open or whenever the access door is opened and closed after said first switch means is closed;
- alarm means responsive to said first switch means for providing an indication when the means for supplying power is connected to the test equipment;
- generator means for supplying activating pulses to the test equipment;
- and
- disabling means responsive to said generator means for disconnecting the means for supplying power from the test equipment whenever said activating pulses are absent.
4 more elements
Dependencies are inferred from the claim text.