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:
Sep. 23, 2003
Filed:
Sep. 08, 2000
Katsunari Ohsono, Hyogo, JP;
Kenji Najima, Hyogo, JP;
Masaru Ohsaki, Hyogo, JP;
Shinji Ohkame, Hyogo, JP;
Mitsubishi Heavy Industries, Ltd., Tokyo, JP;
Abstract
A lightweight cask comprises a barrel body which shields gamma rays. A resin which shields neutrons is provided on the periphery of the barrel body. A basket is made of a plurality of square pipes having neutron absorbing ability. There is a cavity inside the barrel body. This cavity is worked to have a shape corresponding to the outer shape of the basket. The square pipes are inserted in this cavity so as to abut against this inner surface. Furthermore, chamfered portions are provided on the outside surface of the barrel body at 90° intervals and space portions are formed between another resin and an outer casing.