| 摘要 |
A storage device (10) comprising a receptacle (12) and a movable closure member (22), the closure member comprising a seal (30) about its periphery, for positioning against the inside of the receptacle, and a valve (32) within its periphery, wherein the closure member can be moved within the receptacle such that its periphery is substantially continually in contact with the internal surface of the receptacle, and wherein, when in an open position, the valve allows flow of fluid from within the receptacle through the valve, and when in a closed position, the valve prevents flow of liquid from within the receptacle, wherein the receptacle is substantially closed at its lower end. |
| 主权项 |
1. A storage device comprising:
a receptacle; and, a movable closure member, the closure member comprising a seal about its periphery for positioning the closure member against the inside of the receptacle, and comprising a valve within its periphery, wherein the closure member can be moved within the receptacle such that its periphery is substantially continually in contact with the internal surface of the receptacle, and wherein, when in an open position, the valve allows flow of fluid from within the receptacle through the valve, and when in a closed position, the valve prevents flow of liquid from within the receptacle; wherein the receptacle is substantially closed at its lower end; and, the device being characterized in that the movable closure member comprises an aperture and the valve comprises a blocking member that, in a closed position, is received within the aperture and closes the aperture to the passage of fluid and in that the blocking member comprises a float that, when it comes into contact with liquid contained within the receptacle, floats thereupon and blocks the aperture of the closure member. |
