B - Operations – Transporting – 01 – J
Patent
B - Operations, Transporting
01
J
48/13, 23/401, 1
B01J 7/02 (2006.01) B63C 9/18 (2006.01)
Patent
CA 1085141
ABSTRACT A device for generating lighter-than-air gas to inflate a marker buoy or like item, for example in a "man-overboard" situation. The device includes separate chambers for the chemicals and the ambient water used in the reaction. The transfer of a significant quantity of water from the water chamber to the chamber housing the chemicals is automatically delayed until such time as sufficient water to complete the whole of the desired gas-generating reaction has been accepted into the water chamber. The control means for achieving this delay may take various forms. For example it could comprise a wick initially providing substantially the only water path from the water chamber to the reaction chamber housing the chemicals. Alternatively where there is an unrestricted passageway for a free flow of water between the two chambers, the control means could comprise a mass arranged to move automatically to reorientate the device from an initial position, in which the water chamber is at a lower level than the reaction chamber, to a second position in which the reverse is the. In another version, control is achieved in a heavier-than-water device by so positioning the chemicals within the device that they will only be wetted when the correct amount of water has been taken in. Also described are a particularly suitable form of valve for use with the object to be inflated and a number of water-soluble connections which dissolve to trigger off various stages in the process.
243035
Gowling Lafleur Henderson Llp
National Research Development Corporation
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