Technical Operations, Incorporated

John J Munro, Iii

George W Parsons

A storage unit for a quantity of radioactive material in a capsule attached to a leader by which the capsule can be moved, the unit having a straight passage through a body of radiation-shielding material within which the radioactive material can be stored, and a shutter for one end of the passage that is operable between two limits in one of which it closes the passage and in the other of which it locates a hole in register with the passage. A spring-biased tube in the passage fits in a recess around the hole for retaining the shutter in the 'open' position, and this tube can be pulled back from the shutter by a fitting attached to the capsule when the capsule is stored, releasing the shutter to return to the first limit. An interlock is provided to prevent accidental opening of the shutter.

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Westford, MA, United States of America

John J Munro, Iii