End closures for containers
AssigneeBritish Nuclear Fuels plc
InventorsDavid Minshall, Roy Randle
Life of this patent
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Abstract
An end closure for a nuclear fuel flask in which the gate, which is movable between open and closed positions across an end of the flask, has first and second portions which are urged apart, conveniently by spring-loaded means. A door has upper and lower wedge-shaped members mounted on and releasably connected to the respective gate portions. In use, a displacement of the gate into or out of its fully closed position effects movement of one only of the gate portions and its associated door member. As the door members are wedge-shaped the other door member is urged into or out of sealing engagement with the end of the fuel flask.
Claims5
An end closure for a container, in particular an end closure for a nuclear fuel transport flask, comprising means defining an end opening for a container, a gate movable laterally across said end opening between open and closed positions, the gate having first and second portions and means continuously urging said portions apart, a door, means releasably mounting the door on the gate, the door including means sealingly engageable with said opening, the door having upper and lower cooperable wedge-shaped members releasably mounted on the first and second gate portions respectively for movement therewith between the open and closed positions, the assembly including means arranged such that a lateral displacement of the gate into or out of its fully closed position effects movement of the second gate portion only and corresponding movement of the associated lower wedge-shaped door member, with the first gate portion and its associated upper wedge-shaped door member remaining laterally stationary whereby to effect a vertical displacement of the upper wedge-shaped door member into or out of sealing engagement with said opening.
Dependencies are inferred from the claim text.