US PATENT SUBCLASS 441 / 90
.~.~ With mechanical inflation means

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.~.~ With mechanical inflation means {3}
91  DF  .~.~.~> By pump
92  DF  .~.~.~> By compressed gas means {2}
98  DF  .~.~.~> By gas generation from chemical reaction {2}

DEFINITION

Classification: 441/90

With mechanical inflation means:

(under subclass 88) Device having a chamber adapted to be expanded or enlarged for use from a collapsed state, together with means for causing the expansion.

(1) Note. The means for causing expansion does not include oral expanding means.