Safe transporation of hazardous materials
US4100860A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Nov 26, 1973 |
| Grant date | Jul 18, 1978 |
| Priority date | — |
| Expiry date | Nov 26, 1993 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S588/90
- WIPO fieldHandling
- WIPO sectorMechanical engineering
Abstract
A shipping container overpack for safe transportation of radioactive and other hazardous materials provides a leakproof receptacle for containing and protecting the material to be shipped against accidental release and dispersal into the surrounding environment. The receptacle is of conventional size and shape for shipping containers and has spaced inner and outer shells with a layer of foamed polyurethane occupying the space therebetween to provide sealing, insulation and reinforcement. The polyurethane foam is rigidly compressible and adheres to and reinforces the spaced inner and outer shells to provide a stress skin structure. Gusset plates are secured to the inner surface of the outer shell in covering relation to the corners and edges, defining a reinforcing framework of triangular cross-section tubular elements. Relatively rigid polyurethane foam is containd within the tubular elements to add further reinforcement and redundant sealing capacity. Penetration is resisted by making the outer shell of relatively ductile metal adapted to deform and absorb energy rather than permit penetration. Deformable slip plates back up large flat areas of the outer shell, providing increased…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.