The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jul. 08, 1980
Filed:
Nov. 27, 1978
George W Parsons, Jr, North Reading, MA (US);
John J Munro, III, Westford, MA (US);
Technical Operations, Incorporated, Boston, MA (US);
Abstract
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.