US PATENT SUBCLASS 441 / 98
.~.~.~ By gas generation from chemical reaction

Current as of: June, 1999
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441 /   HD   BUOYS, RAFTS, AND AQUATIC DEVICES

80  DF  WATER RESCUE OR LIFE PROTECTING APPARATUS {8}
88  DF  .~ Personal flotation device {9}
90  DF  .~.~ With mechanical inflation means {3}
98.~.~.~ By gas generation from chemical reaction {2}
99  DF  .~.~.~.~> With manually operated valve
100  DF  .~.~.~.~> With soluble or deformable element {1}

DEFINITION

Classification: 441/98

By gas generation from chemical reaction:

(under subclass 90) Device wherein a gas is generated by the reaction of reagents to fill the expandable chamber.