| 摘要 |
1. A gas generator for use with a submersible buoyancy system comprising a cup having a top, a bottom and side walls, said top containing an opening adapted to be attached to the buoyancy system, a vent tube extending through said bottom to the proximity of said top, and a chemical liberating a gas by reaction with water packed between said side walls, said vent tube and said bottom, whereby water reaching said chemical through said vent tube liberates gas to block further entrance of water until the reaction with said chemical declines.
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